® Gas-fired water boilers – Series 3 Featuring ® Flexibility Boiler Manual • Installation • Maintenance • Startup • Parts Series 3 This manual must only be used by a qualified heating installer/service technician. Read all instructions, including this manual and all other information shipped with the boiler, before installing. Perform steps in the order given. Failure to comply could result in severe personal injury, death or substantial property damage.
gas-fired water boiler Contents Hazard definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Ultra at-a-glance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Please read before proceeding . . . . . . . . . . . . . . . . . . . . . . 4 Prepare boiler location . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Prepare boiler . . . . . . . . . . . . . .
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gas-fired water boiler — Boiler Manual Please read before proceeding Installer— Read all instructions, including this manual and all other information shipped with the boiler, before installing. Perform steps in the order given. User — This manual is for use only by a qualified heating installer/service technician. Refer to User’s Information Manual for your reference. User — Have this boiler serviced/ inspected by a qualified service technician, at least annually.
gas-fired water boiler — Boiler Manual Installations must comply with: • Local, state, provincial, and national codes, laws, regulations and ordinances. • National Fuel Gas Code, ANSI Z223.1 – latest edition. • Standard for Controls and Safety Devices for Automatically Fired Boilers, ANSI/ASME CSD-1, when required. • National Electrical Code. • For Canada only: B149.1 or B149.2 Installation Code, CSA C22.1 Canadian Electrical Code Part 1 and any local codes.
gas-fired water boiler — Boiler Manual Prepare boiler location (continued) Flooring and foundation Provide air openings to room Flooring Air openings — Ultra boiler alone in boiler room 1. The Ultra boiler is approved for installation on combustible flooring, but must never be installed on carpeting. Do not install boiler on carpeting even if foundation is used. Fire can result, causing severe personal injury, death or substantial property damage. Foundation 1.
gas-fired water boiler — Boiler Manual Vent and air piping (page 16) 1. The Ultra boiler requires a special vent system, designed for pressurized venting. Ultra boilers are rated ANSI Z21.13 Category IV (pressurized vent, likely to condense in the vent). See instructions beginning on page 16. 2. You must also install air piping from outside to the boiler air intake adapter. The resultant installation is categorized as direct vent (sealed combustion).
gas-fired water boiler — Boiler Manual Prepare boiler (continued) DO NOT install a relief valve with a pressure higher than 30 PSIG. This is the maximum allowable relief Figure 2 Hydrostatic test piping connections valve setting for the Ultra boiler. Perform hydrostatic pressure test Pressure test boiler before permanently attaching water or gas piping or electrical supply. Prepare boiler for test 1. See Figure 2 for reference in following steps. 2.
— Boiler Manual Install water piping Use two wrenches when tightening water piping at boiler, using one of the wrenches to prevent the boiler interior piping from turning. Failure to support the boiler piping connections to prevent them from turning could cause damage to boiler components. General piping information Additional controls, when required The U-Control module uses temperature sensors to provide both high limit protection and modulating temperature control.
gas-fired water boiler — Boiler Manual Install water piping (continued) System water piping methods Simplified pipe/circulator selection All piping methods shown in this manual use primary/ secondary connection to the boiler loop. These designs ensure proper flow through the Ultra boiler, for the most efficient and reliable operation of the boiler and the heating system. For other piping methods, consult your local Weil-McLain representative or see separate Ultra boiler piping guides.
gas-fired water boiler — Boiler Manual Expansion tank and make-up water Figure 4 BASIC INSTALLATION Install water piping (continued) Expansion tank piping 1. Ensure expansion tank size will handle boiler and system water volume and temperature. Allow 3 gallons for boiler and its piping. 2. 3. 4. 5. Undersized expansion tanks cause system water to be lost from relief valve and make-up water to be added through fill valve. Eventual boiler failure can result due to excessive make-up water addition.
gas-fired water boiler — Boiler Manual Install water piping — typical systems Zoning with zone valves Figure 5 Zone valve zoning plus optional DHW piping 1. Connect boiler to system as shown in Figure 5 when zone valve zoning. The primary/secondary piping shown ensures the boiler loop will have sufficient flow. It also avoids applying the high head of the boiler circulator to the zone valves. Also see the information on page 14 and page 15 for suggested piping and sizing.
gas-fired water boiler — Boiler Manual Zoning with circulators Figure 6 BASIC INSTALLATION Install water piping — typical systems (continued) Circulator zoning plus optional DHW piping 1. Connect boiler to system as shown in Figure 6 when circulator zoning. The boiler circulator cannot be used for a zone. It must supply only the boiler loop. Also see the information on page 14 and page 15 for suggested piping and sizing.
gas-fired water boiler — Boiler Manual Using with Weil-McLain PLUS water heaters See ADVANCED INSTALLATION section for additional piping information and applications. PLUS DHW installation — quick-selection Figure 8 The information in this section is for usage of Ultra boilers with Weil-McLain PLUS indirect water heaters.
— Boiler Manual Using with Weil-McLain PLUS water heaters (continued) Figure 9 Ultra boiler with Ultra PLUS or PLUS-40, -60 or -80 water heater, zone valve zoning, typical piping System/zone pipe sizing Boiler loop pipe size Ultra-80, 105 Ultra-155, 230 Ultra-299, 399 (Baseboard, convector or cast iron radiators ONLY) 1” or larger 1¼” or larger 1½ or larger For residential space heating applications (other than radiant heating or unit heaters) ONLY, you can use: 9 7 10 23 20 10 12 27 Ultra Model
gas-fired water boiler — Boiler Manual Venting/air piping — general Do not install the Ultra boiler into a common vent with any other appliance. This will cause flue gas spillage or appliance malfunction, resulting in possible severe personal injury, death or substantial property damage. Existing common vent systems may be too large for the appliances remaining connected after the existing boiler is removed.
— Boiler Manual Venting/air piping — general (continued) Ultra Boilers must be vented and supplied with combustion and ventilation air using piping and methods described in this manual. Every boiler must have its own vent. DO NOT common vent with any other appliance. See page 16. Inspect finished vent and air piping thoroughly to ensure all are airtight and comply with the instructions provided and with all requirements of applicable codes.
gas-fired water boiler — Boiler Manual Sidewall vent/air termination: Weil-McLain cap Vent and air pipe termination options Vent and air pipe installation sequence Step 1 Install the boiler. 1. This section covers sidewall termination using the Weil-McLain sidewall vent cap kit supplied with each boiler. a. Models 80, 105 and 155 are shipped with a 3-inch pipe size kit. b. Models 230, 299 and 399 are shipped with a 4-inch pipe size kit. c.
— Boiler Manual Sidewall vent/air termination: Weil-McLain cap (continued) Provide pipe adapters as needed where pipe size is different from termination connections or boiler connections, and for all AL29-4C vent pipe connections at the boiler and the termination. 1. Use only the materials listed in Figure 12, page 17. Maximum piping length 1. Locate the termination such that the total air piping and vent piping from the boiler to the termination will not exceed the maximum length given in Figure 15. 2.
gas-fired water boiler — Boiler Manual Sidewall vent/air termination: Weil-McLain plate (cont.) d. Avoid possibility of accidental contact of flue products with people or pets. e. Do not locate the terminations where wind eddies could affect performance or cause recirculation, such as inside building corners, near adjacent buildings or surfaces, window wells, stairwells, alcoves, courtyards or other recessed areas. f. Do not terminate above any door or window or under a deck.
— Boiler Manual Sidewall vent/air termination: Weil-McLain plate (cont.) Install terminations — Weil-McLain vent/air cap Figure 20 Hole preparation in wall — Weil-McLain vent/ air plate The inside and outside cover plates are stamped to identify the exhaust (vent) and intake (air) openings. Make sure to orient the plates correctly. 1. Locate termination opening and avoid obstructions: a. Use the template supplied with the termination kit. b.
gas-fired water boiler — Boiler Manual Install vent/air piping — boiler to W-M termination Complete termination preparation Figure 23 Boiler vent and air connections 1. Install vent and air terminations before proceeding. See previous pages for instructions. Installing vent and air piping 1. For reference in the following, see previous pages. 2. Work from the boiler to vent or air termination. Do not exceed the lengths given in the previous pages for either the air or vent piping. a.
gas-fired water boiler — Boiler Manual Prepare condensate fittings BASIC INSTALLATION Install condensate line Figure 24 Condensate trap assembly 1. Remove PVC fittings and gasket from the accessories bag. 2. Deburr and chamfer outside and inside of ½” x 1¼” PVC nipple to ensure even cement distribution when joining. 3. Clean nipple ends and all fittings. Dry thoroughly. 4. For each joint in the condensate line, apply the following. Assemble parts ONLY in the order given. a.
gas-fired water boiler — Boiler Manual Install condensate line (continued) Condensate drain tubing Figure 28 Condensate drain — Ultra-155 & -230 (PVC 1. Connect condensate drain tubing to the ½” PVC tee and run to floor drain or condensate pump (see Figure 30). Use ½” PVC or CPVC pipe; or 5/8” I.D. tubing. tee installation shown applies to all models)) Use materials approved by the authority having jurisdiction.
— Boiler Manual Gas piping Connecting gas supply piping 1. Remove jacket front panel and refer to Figure 31 to pipe gas to boiler. a. Install ground joint union for servicing, when required. b. Install manual shutoff valve in gas supply piping outside boiler jacket when required by local codes or utility requirements. c. In Canada — When using manual main shutoff valve, it must be identified by the installer. 2. Wall-mounted boilers a. Refer to separate Ultra Boiler Wall-mounting instructions. b.
gas-fired water boiler — Boiler Manual Field wiring — basic system ELECTRICAL SHOCK HAZARD — For your safety, turn off electrical power supply at service entrance panel before making any electrical connections to avoid possible electric shock hazard. Failure to do so can cause severe personal injury or death. Wiring must be N.E.C. Class 1. If original wiring as supplied with boiler must be replaced, use only type 105 °C wire or equivalent.
gas-fired water boiler — Boiler Manual BASIC INSTALLATION Field wiring — basic system (continued) Figure 32 Simplified wiring — basic system with DHW and space heating (see ADVANCED section for more information) Locate the sensors on the system piping as shown in Figure 4, page 11 and other piping drawings throughout this manual. Wire the DHW tank aquastat to the U-Control “heat demand 1” input, terminals P11 #4 and #5.
gas-fired water boiler — Boiler Manual U-Control operation and setup Temperature settings — You must ensure that the U- Control is set for the proper water temperatures for the system. Excessive water temperature can cause significant property damage in some applications. Multi-temperature systems — If the heating system includes circuits that require lower temperature water (radiant slab circuits, for example) as well as higher temperature circuits (DHW, finned tube baseboard, etc.
gas-fired water boiler — Boiler Manual BASIC INSTALLATION U-Control operation and setup (continued) Figure 34 U-Control display and navigation (see Figure 101, page 85) (see Figure 101, page 85) Part number 550-100-090/0809 29
gas-fired water boiler — Boiler Manual U-Control operation and setup (continued) For detailed control information and additional wiring, see the AD- VANCED INSTALLATION section of this manual. Low-temperature systems (radiant slab, etc.) — DO NOT use the Ultra boiler control as the only means of water temperature regulation for low-temperature systems if higher-temperature systems are also supplied. EXPRESS SETUP — using default settings 1.
— Boiler Manual Startup — fill the system Clean system to remove sediment Antifreeze 1. You must thoroughly flush the system (without boiler connected) to remove sediment. The high-efficiency heat exchanger can be damaged by buildup or corrosion due to sediment. 2. For zoned systems, flush each zone separately through a purge valve. (If purge valves and isolation valves are not already installed, install them to properly clean the system.) 3.
gas-fired water boiler — Boiler Manual Startup — fill the system (continued) Freeze protection (when used) Follow these guidelines to prevent possibility of severe personal injury, death or substantial property damage: NEVER use automotive or standard glycol antifreeze, even glycol made for hydronic systems . Use only freeze-prevention fluids recommended by Weil-McLain for application in Ultra Boiler systems. Thoroughly flush any system that has used glycol before installing the new Ultra boiler.
— Boiler Manual Startup — final checks Check for gas leaks Before starting the boiler, and during initial operation, use a leak detector or smell near the floor and around the boiler for gas odorant or any unusual odor. Remove boiler front door and smell interior of boiler enclosure. Do not proceed with startup if there is any indication of a gas leak. Repair any leak at once. DO NOT adjust or attempt to measure gas valve outlet pressure. The gas valve is factory-set for the correct outlet pressure.
gas-fired water boiler — Boiler Manual Startup — final checks (continued) To start the boiler 1. Turn OFF the boiler ON/OFF switch. 2. Read and follow the Operating Instructions, Figure 36, page 35. 3. The U-Control display will show installed sensors when first powered. Make sure the right sensors are detected. If not, determine the cause and correct before proceeding. If boiler does not start correctly 1. Check for loose connections, blown fuse or service switch off? 2.
gas-fired water boiler — Boiler Manual BASIC INSTALLATION Startup — final checks (continued) Figure 36 Operating instructions (WARNING — Verify that the U-Control is set for the correct boiler model before proceeding.
gas-fired water boiler — Boiler Manual Startup — final checks (continued) ❏ 1. 2. 3. 4. 5. 6. Check flame & combustion with instruments For Ultra-399 propane boilers, special start-up is required. See page 37 for procedure. See DANGER on page 45 before proceeding. Initiate a call for heat on one of the heat demand inputs. Access the U-Control installer menus by pressing and holding the UP and DOWN arrow keys for five seconds.
— Boiler Manual Startup — final checks (continued) grommet into the flue pipe, then insert the probe into the rubber grommet. Figure 39 Model 399 — Throttle screw location (ONLY for use by a qualified technician, using calibrated combustion test instruments) You must replace the flue gas temperature sensor to prevent flue gas spillage into the boiler enclosure. Failure to comply could result in severe personal injury, death or substantial property damage.
gas-fired water boiler — Boiler Manual Check-out/startup verification ❏❏ Verified that the U-Control is set for the correct boiler model? ❏❏ Entered installation date and installer contact information into U-Control? ❏❏ Boiler and heat distribution units filled with water? ❏❏ Water chemistry verified per page 31? ❏❏ Sentinel X100 corrosion inhibitor added and water tested to be within range? tested for operation as outlined by manufacturer? (Boiler should be operating and should go off when controls ar
gas-fired water boiler (Pages 39–91) READ AND FOLLOW INSTRUCTIONS IN THE BASIC INSTALLATION SECTION FIRST. This section is supplemental information only. This section covers multiple boiler systems and system types not covered under the BASIC section. It also includes alternative vent/air piping methods, water and gas pipe sizing guidelines and advanced, detailed information on the U-Control and boiler wiring. Part number 550-100-090/0809 ADVANCED INSTALLATION Quick view . . .
gas-fired water boiler The — Boiler Manual Gas-fired water boiler, Featuring Models 80, 105, 155 and 230 1. Cast aluminum heat exchanger 2. Heat exchanger access cover 3. Blower The advanced blower design and air inlet silencer on Ultra boilers result in very quiet operation. Models Ultra-80 & 105 — Air enters the boiler enclosure through the air intake adapter (18), flows through the enclosure, enters the air inlet silencer (5), then enters the blower.
gas-fired water boiler Gas-fired water boiler, Featuring Flexibility ADVANCED INSTALLATION The — Boiler Manual Part number 550-100-090/0809 41
gas-fired water boiler The — Boiler Manual Gas-fired water boiler, Featuring Models 299 and 399 1. Cast aluminum heat exchanger 2. Heat exchanger access cover 3. Blower The advanced blower design and air inlet silencer on Ultra boilers result in very quiet operation. Air enters the boiler enclosure through the air intake adapter (18), flows through the enclosure, enters the air inlet silencer (5), then enters the venturi (6).
gas-fired water boiler Gas-fired water boiler, Featuring Flexibility ADVANCED INSTALLATION The — Boiler Manual Part number 550-100-090/0809 43
gas-fired water boiler — Boiler Manual Prepare boiler — convert for propane Prepare boiler for propane (when required) Figure 41 Orifice identification Propane operation Ultra boilers must be converted for propane operation unless specifically manufactured for propane. Propane-ready boilers have suffix “LP” after the model number. All other boilers require conversion for propane operation. Ultra-80 natural gas boilers require installation of a burner in addition to an orifice change.
gas-fired water boiler — Boiler Manual Prepare boiler — convert for propane (continued) 4. Lift the door away from boiler. 5. Remove the air inlet silencer from the adapter: a. Models 80 and 105: See Figure 121, page 117. b. Models 155 and 230: See Figure 122, page 118. c. Models 299 and 399: See Figure 123, page 119. Figure 43 Installing propane orifice (Ultra-155, -230, and -299) 6. Disconnect the gas valve electrical plug. 7. See Figure 42, page 44 or Figure 43.
gas-fired water boiler — Boiler Manual Placing boiler — wall-mounting option Wall-mounted boilers (Ultra-80 through -399) 1. The wall-mounting kit is NOT supplied as standard equipment with the boiler, and must be purchased separately. See WARNING below. Figure 44 Ultra-80 through Ultra-230 only — Install bottom-piping grommets if required Wall mount Ultra boilers only using the WeilMcLain Ultra boiler wall-mounting kit and accompanying instructions.
gas-fired water boiler — Boiler Manual Placing boiler — wall-mounting option (continued) Prepare boiler for wall mounting 1. Remove the jacket front panel. This will simplify lifting and handling the boiler when mounting. 2. When piping will be routed out the top of the boiler, no special preparation is needed other than that given in this manual. 3. Ultra-80 to -230 only: To route the piping through the bottom of the boiler enclosure: a.
gas-fired water boiler — Boiler Manual Install water piping — advanced Zoning with zone valves Figure 48 Zone valve zoning plus optional DHW piping (alternate to piping shown in Figure 5, page 12) High-flow-rate/high-head-loss DHW circuits 1. For applications requiring DHW circuit flow rates higher than allowable for the boiler, or for high pressure-drop coil-type DHW tanks, connect the piping as in Figure 48. The DHW water only flows through the secondary circuit connector piping.
gas-fired water boiler — Boiler Manual Install water piping — advanced (continued) Example system with DHW as a zone, zoning with circulators Figure 49 Circulator zoning plus optional DHW piping 1. Connect boiler to system as shown in Figure 49 when circulator zoning. The boiler circulator cannot be used for a zone. It must supply only the boiler loop. Also see the information on page 10 for suggested piping and sizing.
gas-fired water boiler — Boiler Manual Install water piping — advanced (continued) Radiant heating applications Figure 50 Typical radiant heating system piping plus optional DHW 1. The Ultra boiler is ideal for use in radiant heating. The Ultra boiler’s unique heat exchanger design allows it to work well even in condensing mode. So there is no need to regulate boiler return water temperature in radiant heating applications. 2.
gas-fired water boiler — Boiler Manual Install water piping — advanced (continued) Chilled water systems Figure 51 Chilled water system plus optional DHW piping 1. Install boiler so that chilled medium is piped in parallel with the heating boiler. Use appropriate valves to prevent chilled medium from entering boiler. See Figure 51 for typical installation of balancing valve and check valve.
gas-fired water boiler — Boiler Manual Sizing direct-connected DHW piping Direct-connected DHW piping For Weil-McLain PLUS water heaters, refer to the PLUS water heater manual for application information. Also see quick-select information on page 14. The information here is for other water heater designs.
gas-fired water boiler — Boiler Manual Sizing direct-connected DHW piping (continued) Figure 54 Pipe sizing and head losses for DHW applications (H1=Ultra boiler head loss; Figure 55 Pump curves for typical circulators suggested for DHW loop H2=piping head loss) Flow rate GPM Temp rise °F Pipe size H1 H2 Inches Boiler head loss Feet w.c. Piping head loss Feet w.c. Ultra-80 (71,000 Btuh output) 7 20 1 6.6 2.7 9 16 1 11.6 4.2 14 1¼ 14.6 2.
gas-fired water boiler — Boiler Manual Multiple boiler installations Placing multiple boilers Figure 56 Side-to-side mounting of multiple Ultra boilers 1. Locate multiple boilers in boiler room according to: a. Figure 56 (side-to-side), or b. Figure 57 (back-to-back). c. Figure 58 (wall mounting). 2. Provide indicated clearances around boilers for access and servicing. If recommended dimensions are not possible, provide at least the minimum clearances given on page 5. Also follow local codes. 3.
gas-fired water boiler — Boiler Manual Prepare boiler location — multiple boilers Manifolded combustion air option 1. Multiple Ultra boilers can use a common combustion air manifold. a. See Figure 126, page 122 for minimum cross sectional area of combined air ducts. b. Provide minimum clearance to adjacent vents and grade/snow line as shown in Figure 59. c. Provide minimum free area in duct (adjusted for louver restriction) of 1 square inch per 2,000 Btuh total boiler input. d.
gas-fired water boiler — Boiler Manual Multiple boiler water piping Easy-Fit® piping installation 1. Main header and Easy-Fit® Manifold pipe sizing. a. New system — See page 10. b. Replacing boilers in an existing system — Without reducing size, connect system supply and return lines. Install tees or crosses for Easy-Fit® manifolds as shown in Figure 60 or Figure 61. Size manifolds to handle total connected boiler output as shown. 2.
gas-fired water boiler — Boiler Manual Multiple boiler water piping (continued) ADVANCED INSTALLATION Figure 62 Piping schematic — typical piping for multiple Ultra boilers, using Weil-McLain Easy-Fit manifolds Legend — Figure 62 1 Flow/check valve (each boiler) 2 Isolation valves (when used) 11 Check valve or backflow preventer, as required by applicable codes 12 Isolation valve 13 Cold water supply 3 Cap 14 Supply water temperature control (when used) 4 Easy-Fit® Manifold (supply) — layout and size
gas-fired water boiler — Boiler Manual Multiple boiler water piping (continued) Figure 63 Piping layout — typical piping for multiple Ultra boilers, using Weil-McLain Easy-Fit manifolds (2-boiler system) Legend — Figure 63 1 2 3 4 5 6 7 8 9 13 17 58 Flow/check valve (each boiler) Isolation valves (when used) Caps Easy-Fit® Manifold (supply) — layout and size per page 56 Easy-Fit® Manifold (return) — layout and size per page 56 Primary circulator Expansion tank (diaphragm type) System air eliminator Sys
gas-fired water boiler — Boiler Manual Multiple boiler water piping (continued) Suggested DHW boiler-side pipe sizing (for max 0.04 feet head loss per foot of total equivalent length, TEL) Flow rate Size Flow rate Size 1 – 3.9 gpm ¾” 24 – 45 gpm 2” 3.9 – 7.1 gpm 1” 45 – 75 gpm 2½” 7.
gas-fired water boiler — Boiler Manual Multiple boiler water piping (continued) Figure 65 Piping layout — typical piping for multiple Ultra boilers, using isolation exchanger Use isolation heat exchanger for: 1. Large volume systems with high mineral content in water. 2. Systems exposed to untreated quantities of makeup water. 3. Old systems severely contaminated with scale and rust buildup inside piping and heat distribution units. 4. Process applications. 5. Commercial service water applications. 6.
gas-fired water boiler — Boiler Manual Venting/air piping — Massachusetts installations Instructions for the Commonwealth of Massachusetts 1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time of installation of the side wall horizontal vented gas fueled equipment, the installing plumber or gas fitter shall observe that a hard wired carbon monoxide detector with an alarm and battery back-up is installed on the floor level where the gas equipment is to be installed.
gas-fired water boiler — Boiler Manual Vent/air piping — options Vent and air pipe termination options Figure 67 Vent and air termination options 1. Vent and air piping must terminate out the sidewall or through the roof of the building, using only one of the methods described in this manual. 2. Sidewall options (see Figure 67, left side): a. TOP: Weil-McLain termination cap (kit included with boiler) — see page 18 for instructions. b. MIDDLE: Concentric PVC pipe (requires special kit, page 113). c.
gas-fired water boiler — Boiler Manual Sidewall vent/air termination: 3” PVC concentric 1. The Weil-McLain 3” PVC concentric termination kit must be purchased separately. See Figure 117, page 113 for part number. Use only the Weil-McLain 3” PVC concentric termination kit for concentric venting. Provide pipe adapters as needed for 2” or 4” plastic piping or for AL29-4C vent pipe.
gas-fired water boiler — Boiler Manual Sidewall vent/air termination: 3” PVC concentric (cont.) 1. Locate the vent/air terminations using the following guidelines. 2. You must consider the surroundings when terminating the vent and air: a. Position the vent termination where vapors will not damage nearby shrubs, plants or air conditioning equipment or be objectionable. b. The flue products will form a noticeable plume as they condense in cold air. Avoid areas where the plume could obstruct window views.
gas-fired water boiler — Boiler Manual Sidewall vent/air termination: 3” PVC concentric (cont.) Install terminations — concentric pipes 1. Assemble the vent termination as described for vertical concentric terminations, beginning on page 70. Figure 73 Installing and supporting the concentric sidewall vent assembly The vent and air piping must be securely supported, and must not rest its weight on the boiler fittings.
gas-fired water boiler — Boiler Manual Sidewall vent/air termination: Separate pipes Allowable vent/air pipe materials Figure 74 Maximum piping lengths for separate vent and air pipe sidewall termination 1. Use only the materials listed in Figure 12, page 17. 2. Purchase termination plates and bird screens separately. See the parts list at the end of this manual.
gas-fired water boiler — Boiler Manual Sidewall vent/air termination: Separate pipes (continued) 5. Maintain clearances as shown in the illustrations in this manual section. Also maintain the following: a. Vent must terminate: • At least 6 feet from adjacent walls. • No closer than 5 feet below roof overhang. • At least 7 feet above any public walkway. • At lease 3 feet above any forced air intake within 10 feet.
gas-fired water boiler — Boiler Manual Sidewall vent/air termination: Separate pipes (continued) 2. Place wall penetrations to obtain minimum clearance of 12 inches between vent pipe and adjacent air inlet elbow, as shown in Figure 78, page 67 for U. S. installations. 3. For Canadian installations, provide clearances required by CSA B149.1 or B149.2 Installation Code. 4. The air inlet of an Ultra boiler is part of a direct vent connection.
gas-fired water boiler — Boiler Manual Vertical vent/air termination: 3” PVC concentric 1. The Weil-McLain 3” PVC concentric termination kit must be purchased separately. See Figure 117, page 113 for part number. Use only the Weil-McLain 3” PVC concentric termination kit for concentric venting. Provide pipe adapters as needed for 2” or 4” plastic piping or for AL29-4C vent pipe. Allowable vent/air pipe materials 1. Use only the materials listed in Figure 12, page 17. Maximum piping length 1.
gas-fired water boiler — Boiler Manual Vertical vent/air termination: 3” PVC concentric (continued) 4. Maintain clearances to termination as given below: a. Vent outlet must be located: • At least 6 feet from adjacent walls. • No closer than 5 feet below roof overhang. • At least 7 feet above any public walkway. • At lease 3 feet above any forced air intake within 10 feet. • No closer than 12 inches below or horizontally from any door or window or any other gravity air inlet. b.
gas-fired water boiler — Boiler Manual Vertical vent/air termination: 3” PVC concentric (continued) Figure 84 Weil-McLain 3” PVC concentric termination Figure 85 Weil-McLain 3” PVC concentric termination assembly ADVANCED INSTALLATION assembly — DO NOT attach the rain cap until the termination has been inserted through the roof and all supports have been installed.
gas-fired water boiler — Boiler Manual Vertical vent/air termination: 3” PVC concentric (continued) 10. For each joint: a. Handle fittings and pipes carefully to prevent contamination of surfaces. b. Apply primer liberally to both joint surfaces — pipe end and fitting socket. c. While primer is still damp, lightly apply approved cement to both surfaces in a uniform coating. d. Apply a second coat to both surfaces. Avoid using too much cement on sockets to prevent cement buildup inside. e.
gas-fired water boiler — Boiler Manual Vertical vent/air termination: Separate pipes Figure 88 Maximum piping lengths for separate vent and air pipe vertical termination 1. Use only the materials listed in Figure 12, page 17. 2. Purchase bird screens for vent and air terminations separately. See the parts list at the end of this manual.
gas-fired water boiler — Boiler Manual Vertical vent/air termination: Separate pipes (continued) 5. Maintain clearances to vent termination as given below: a. Vent must terminate: • At least 6 feet from adjacent walls. • No closer than 5 feet below roof overhang. • At least 7 feet above any public walkway. • At least 3 feet above any forced air intake within 10 feet. • No closer than 12 inches below or horizontally from any door or window or any other gravity air inlet. b.
gas-fired water boiler — Boiler Manual Install vent/air piping — boiler to termination Complete termination preparation Figure 91 Boiler vent and air connections 1. Install vent and air terminations before proceeding. See previous pages for instructions. Installing vent and air piping 1. For reference in the following see: a. Sidewall terminations: see Figure 92, page 76. b. Vertical terminations: see Figure 93, page 76. 2. Work from the boiler to vent or air termination.
gas-fired water boiler — Boiler Manual Install vent/air piping — boiler to terminations (cont.) Figure 92 Sidewall termination methods and installation requirements Weil-McLain sidewall termination plate (install termination — page 19) Figure 93 Vertical termination methods and installation requirements Weil-McLain 3” PVC concentric termination (install termination — page 69) • Install pipe supports every 5 feet on both the horizontal and vertical runs.
gas-fired water boiler — Boiler Manual Gas piping — sizing gas lines Natural Gas: Figure 94 Common gas line for multiple boilers Pipe sizing for natural gas 1. Size gas piping from meter outlet to entrance of boiler in accordance with Figure 95 and Figure 96. 2. Use total input of all boilers. Divide total input in Btuh by 1,000 to obtain cubic feet per hour of natural gas. a. Pipe lengths in Figure 95 are equivalent length of straight pipe.
gas-fired water boiler — Boiler Manual Field wiring — advanced ondary heat source when another heat source, such as a heat pump or another boiler is available. ELECTRICAL SHOCK HAZARD — For your safety, turn off electrical power supply at service entrance panel before making any electrical connections to avoid possible electric shock hazard. Failure to do so can cause severe personal injury or death. Wiring must be N.E.C. Class 1.
gas-fired water boiler — Boiler Manual Field wiring — advanced Figure 97 Wiring to circulators (see Figure 98 & Figure 99) (continued) The U-Control module provides internal low water protection 1. The U-Control and internal sensors in the Ultra boiler provide both temperature control and low water protection (using temperature senors), as explained below: The U-Control module uses temperature sensors to provide both high limit protection and modulating temperature control.
gas-fired water boiler — Boiler Manual Field wiring — advanced (see Figure 98 & Figure 99) (continued) Figure 98 Schematic wiring diagram — Ultra-80 through Ultra-299 80 Part number 550-100-090/0809
gas-fired water boiler — Boiler Manual Field wiring — advanced (see Figure 98 & Figure 99) (continued) ADVANCED INSTALLATION Figure 99 Ladder wiring diagram — Ultra-80 through Ultra-299 Part number 550-100-090/0809 81
gas-fired water boiler — Boiler Manual Field wiring — advanced (see Figure 98 & Figure 99) (continued) Additional limits Outdoor temperature sensor 1. The U-Control allows connection of external limit controls, both for manual reset and for automatic reset operation of the U-Control. 2. Manual reset of the U-Control on limit action — Connect external limits across P13, terminals 1 and 2 if the U-Control is to require manual reset when a limit opens, even if the limit re-closes.
gas-fired water boiler — Boiler Manual U-Control operation and setup — advanced 4. The outdoor sensor must be installed to use this function. ADJUST OUTDOOR 1. Use this setting to adjust the outdoor sensor temperature to account for solar or other effects that would cause the sensor to read incorrectly. ADVANCED SETUP – OVERVIEW ADDITIONAL HEAT DEMAND 1. Access contractor menus by pressing and holding the UP and DOWN arrow keys at the same time for 5 seconds. 2. The contractor screen will show: a.
gas-fired water boiler — Boiler Manual U-Control operation and setup — advanced (continued) e. Connect these output terminals to the SHADOW boilers’ 0–10 VDC input terminals, P15 #5 and #6. The SHADOW boilers will start and modulate based on the signal strength. The SHADOW boilers must be set up as Type 4 (see below). They do not need their additional heat timers to be setup. f. An alternate method is to daisy chain the other boilers. That is, connect the output of each to the input of the next.
gas-fired water boiler — Boiler Manual U-Control operation and setup — advanced (continued) Figure 101 U-Control system types and preset parameters Display Preset temperatures Note 8-character 3-char Max Target Temp Outdoor Temp for Max Target Min Target Temp Outdoor Temp for Min Target Fan-coil FAN-COIL FCL 190 0 140 70 Finned tube baseboard FIN BASE FTB 180 0 130 70 Cast iron baseboard IRN BASE CIB 180 0 120 70 Cast iron radiators RADIATOR CIR 180 0 120 70 Radiant –
gas-fired water boiler — Boiler Manual U-Control operation and setup — advanced (continued) Figure 102 U-Control menus (press and hold the UP and DOWN arrow keys for 5 seconds to enter contractor menus) Menus Next screen Next screen Next screen Next screen Follow information at the bottom of each screen to navigate to next/previous screen or enter/save data BOILER SETTINGS BOILER MODEL ##### 80 105 155 230 HIGH ALTITUDE ### NO YES HIGH TEMP LIMIT ### WWSD SETTING °F ADJUST OUTDOOR °F SYSTEM S
gas-fired water boiler — Boiler Manual U-Control operation and setup — advanced (continued) Figure 102 U-Control menus, continued (press and hold the UP and DOWN arrow keys for 5 seconds to enter contractor menus) Menus Next screen Next screen Next screen Next screen SET YR/MN/DAY/HR/MIN DIAGNOSTICS TEMPERATURES STATUS: ########## SYSTEM SUPPLY: ###°F SYSTEM RETURN: ###°F BOILER OUT1: ###°F BOILER OUT2: ###°F BOILER IN1: ###°F FLUE 1: ###°F FLUE 2: ###°F OUTDOOR: ###°F INPUTS STATUS: ##########
gas-fired water boiler — Boiler Manual U-Control operation and setup — advanced (continued) Figure 103 U-Control setup options (see Figure 102, page 86 for location in menu sequence) Menu/Item Units Low Value High Value Default Comment Boiler Settings Boiler Model 80, 105, 155, 230, 299, 310, 399, 550, 750 High Altitude yes or no no Adjusts ignition and low fire fan speed (for altitudes above 5, 500 feet only) High Limit °F 50 200 200 If boiler out temperature reaches this temperature boi
gas-fired water boiler — Boiler Manual U-Control operation and setup — advanced (continued) Figure 103 U-Control setup options (see Figure 102, page 86 for location in menu sequence), continued Menu/Item Max On Time Units minutes Low Value off High Value 240 Default 30 Comment Longest time boiler will satisfy this system before switching to an active lower priority Min On Time minutes off 240 15 Time boiler will satisfy this system before switching to the next active priority Boost Interval m
gas-fired water boiler — Boiler Manual U-Control operation and setup — advanced (continued) Figure 104 U-Control diagnostic information (see Figure 102, page 86 for location in menu sequence Menu/Item Units Low Value High Value Default Comment Diagnostics Temperatures Status Text data System Supply System Return Boiler Out1 Boiler Out2 Boiler In1 Flue1 Flue2 Outdoor °F °F °F °F °F °F °F °F data data data data data data data data Inputs Status Text data Priority 1 Priority 2 Priority 3 Analo
gas-fired water boiler — Boiler Manual U-Control operation and setup — advanced (continued) Figure 104 U-Control diagnostic information (see Figure 102, page 86 for location in menu sequence), continued Manual Reset Auto Reset Inputs Outputs Temperatures Lockout History 3 Time & Date Status Manual Reset Auto Reset Inputs Outputs Temperatures Software Versions Display Main Micro Second Micro Manual Test Mode Status Target Modulation System Supply System Return Boiler Out Boiler In Flame Signal Blower Sign
gas-fired water boiler — Boiler Manual Annual startup and general maintenance Follow the service and maintenance procedures given throughout this manual and in component literature shipped with the boiler. Failure to perform the service and maintenance could result in damage to the boiler or system. Failure to follow the directions in this manual and component literature could result in severe personal injury, death or substantial property damage.
gas-fired water boiler — Boiler Manual Annual startup REMOVING BURNER GASKET or COVER PLATE INSULATION First-year special inspection It is recommended that you obtain a Weil-McLain Ultra Boiler Maintenance kit before attempting the first-year inspection, to ensure all parts that may be needed are available. This kit includes a heat exchanger cover plate gasket, burner gasket (80 and 105 only), new ignitor, and ignitor gasket. See listing in Replacement parts section of this manual.
gas-fired water boiler — Boiler Manual Annual startup (continued) Clean condensate trap The boiler should be inspected and started annually, at the beginning of the heating season, only by a qualified service technician. In addition, the maintenance and care of the boiler designated in Figure 105, page 92 and explained on the following pages must be performed to assure maximum boiler efficiency and reliability. Failure to service and maintain the boiler and system could result in equipment failure.
gas-fired water boiler — Boiler Manual Annual startup (continued) 5. Check system water chemistry (pH, hardness and inhibitor level). See page 31. Check expansion tank 1. Expansion tanks provide space for water to move in and out as the heating system water expands due to temperature increase or contracts as the water cools. Tanks may be open, closed or diaphragm or bladder type. See page 11 of this manual for suggested location of expansion tanks and air eliminators.
gas-fired water boiler — Boiler Manual Annual startup (continued) Check burner flame The boiler contains ceramic fiber materials. Use care when handling these materials per instructions on page 93 of this manual. Failure to comply could result in severe personal injury. 1. Inspect flame through observation window using the procedure on page 36. 2. If flame is unsatisfactory at either high fire or low fire, turn off boiler and allow boiler to cool down.
gas-fired water boiler — Boiler Manual Annual startup (continued) 4. If flame signal still remains low, inspect the vent and air piping. Then inspect the heat exchanger, following the procedures given in this manual for removal and reinstallation of the head exchanger cover plate and other boiler components. Clean the exchanger as described in this manual if necessary. 6. Set the firing rate to MEDIUM (ignition rate). 7. Write down the blower RPM value.
gas-fired water boiler — Boiler Manual Annual startup (continued) Check boiler relief valve 1. Inspect the relief valve and lift the lever to verify flow as in the following warnings, excerpted from a relief valve manufacturer’s warning label. Before operating any relief valve, ensure that it is piped with its discharge in a safe area to avoid severe scald potential. Read page 9 before proceeding further.
gas-fired water boiler — Boiler Manual Troubleshooting VERIFY PROPER OPERATION AFTER SERVICING. Reinstall boiler jacket front door Before servicing and making connections . . . Reinstall boiler jacket front door after servicing. The boiler front door must be securely fastened to the boiler to prevent boiler from drawing air from inside the boiler room. This is particularly important if the boiler is located in the same room as other appliances.
gas-fired water boiler — Boiler Manual Troubleshooting (continued) Check the following: 1. Make sure thermostat is calling for heat and contacts (including appropriate zone controls) are closed. Check for 24 VAC between thermostat wire nuts and ground. 2. Make sure all external limit controls are either installed (and closed) or temporarily jumpered for testing. 3. Make sure that connectors to control module are securely plugged in at module and originating control. 4. Gas pressures: • Maximum: 13” w.c.
gas-fired water boiler — Boiler Manual Troubleshooting (continued) Make sure to determine the causes of outages. Do not leave the boiler operating without a complete diagnosis. U-Control fault indications 1. The U-Control provides diagnostic information for both automatic reset conditions and manual reset conditions. See Figure 104, page 90 for information available on the U-Control display. 2. Figure 111 shows the screen behavior during an automatic or manual reset condition.
gas-fired water boiler — Boiler Manual Troubleshooting (continued) Figure 112 Troubleshooting suggestions for Ultra boilers U-Control Error Condition Log The U-control is able to record information about the boiler’s condition at the time of the three previous faults or errors. This information is available to view in Contractor Menus under “DIAGNOSTICS” by selecting “ERRORS.
gas-fired water boiler — Boiler Manual Troubleshooting (continued) Figure 112 Troubleshooting suggestions for Ultra boilers (continued) Display Nothing is shown in display screen and no other boiler components are operating Nothing is shown on display screen, but boiler is operating TEMP RISE TOO QUICKLY Condition Control is not receiving 120V power Occurs when the communication is lost from the U-control to the display.
gas-fired water boiler — Boiler Manual Troubleshooting (continued) Figure 112 Troubleshooting suggestions for Ultra boilers (continued) Display RETURN > SUPPLY TEMPERATURE SENSOR Condition Occurs when a return water temperature is greater than the corresponding supply temperature by 10ºF or more. Diagnostics Automatically resets when condition no longer exists. Corrective Action(s) Verify proper flow direction of the boiler circulator.
gas-fired water boiler — Boiler Manual Troubleshooting (continued) Figure 112 Troubleshooting suggestions for Ultra boilers (continued) Display Condition Diagnostics Corrective Action(s) DISPLAY COMM Occurs when display communications out for 30 seconds Automatically resets when communication is reestablished. Check for a loose connection at the molex plug on the control and connection on the back of the display. LIMIT OPEN Occurs when manual or automatic reset limit opens.
gas-fired water boiler — Boiler Manual Troubleshooting (continued) Figure 112 Troubleshooting suggestions for Ultra boilers (continued) Display Condition Diagnostics Corrective Action(s) BLOWER FAULT Blower unable to reach required speed or does not reach 0 RPM when turned off. Reset using manual reset screen on display Check wire harness for loose connections and pin engagement at blower connections, chassis mount connection through sheet metal cabinet, and U-Control module.
gas-fired water boiler — Boiler Manual Troubleshooting (continued) Figure 112 Troubleshooting suggestions for Ultra boilers (continued) Display GAS VALVE FAULT Condition The U-Control has detected a problem with it gas valve output circuit Diagnostics Reset using manual reset screen on display Corrective Action(s) Check wire harness connections between gas valve and U-Control. Check resistance between If lockout reoccurs replace U-Control.
gas-fired water boiler — Boiler Manual Ultra Gas Boiler Data Collection Sheet Customer Info: Maintenance Info: Name: Phone: Model: CP#: Installed: Contact: Contractor: Job name: City, state: Distributor: System Components: Near boiler pipe size: Boiler circulator model: DHW tank (yes/no): DHW direct/system: Dhw model: Dhw pipe size: DHW circulator model: Is there air in system?: Boiler/System Piping Details (Please Sketch) Please note the placement of system sensors Diagnostic Errors: Control fault: I
gas-fired water boiler — Boiler Manual Maintenance Disconnect power Electrical shock hazard — Disconnect all electrical power to the boiler before attempting maintenance procedures. Failure to complete could result in severe personal injury, death or substantial property damage. Cleaning the heat exchanger — pin side when required The boiler contains ceramic fiber materials. Use care when handling these materials per instructions on page 93 of this manual.
gas-fired water boiler — Boiler Manual Maintenance (continued) Accessing & cleaning exchanger: Ultra-80 and Ultra-105 Only 1. Close the external manual gas valve. 2. Disconnect the flexible gas line at its flare fitting. 3. Remove the air silencer by separating it from the air adapter on the blower inlet. 4. Disconnect wiring: • gas valve plug • blower power supply plug • blower control connector • ignition cable • ground wire. 5.
gas-fired water boiler — Boiler Manual Maintenance (continued) Accessing & cleaning exchanger: Ultra-155, -230, 299 and -399 Only 1. Close the external manual gas valve. 2. Disconnect wiring: • gas valve electrical plug • two electrical Molex plugs from the blower assembly • ignition cable • ground wire. 3. Disconnect the flexible gas line at its flare fitting. 4. Remove the air silencer by lifting the plastic clamp off of the gas line and then gently sliding the air silencer down and off the valve. 5.
gas-fired water boiler — Boiler Manual Replacement parts Replacement parts must be purchased through a local Weil-McLain distributor. When ordering, specify boiler model and size and include description and part number of replacement part. Results from using modified or other manufactured parts will not be covered by warranty and may damage boiler or impair operation. Weil-McLain part numbers are found in Weil-McLain Boilers and Controls Repair Parts Lists. The boiler contains ceramic fiber materials.
gas-fired water boiler — Boiler Manual Replacement parts (continued) Figure 117 Miscellaneous parts and kits Item 1 Description Part Number CHEMICALS Antifreeze, aluminum-safe, Sentinel X500 . . . . . . . . . . . . . . . . . . . . . . . . . . Corrosion inhibitor, Sentinel X100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inhibitor quick-test kit . . . . . . . . . . . . . . . . . . . . . . . . . . . .
gas-fired water boiler — Boiler Manual Replacement parts (continued) 1 2 3 4 5 Description Jacket front door Boiler leg kit (4 required) Knurled head screw for jacket front door (2 required) Knurled head screw clip-on receptacle (not shown) (2 required) Air adapter kit (Includes adapter, 3” gasket and mounting bracket) 3” 4” Boiler models Part number Item Item Figure 118 Jacket parts All All All 383-500-135 383-500-065 383-500-320 6 Flue outlet pipe adapter All 383-500-180 7 8 Top cover,
gas-fired water boiler — Boiler Manual Replacement parts (continued) Part Number Description 1 Ultra U-Control module 383-500-658 2 Transformer, 120v/24v 383-500-628 3 Display board assembly (includes plastic and display screen) 383-500-659 4 On/off power switch 383-500-205 5 Pressure/temperature gauge assembly (Includes temperature and pressure sensor) 383-500-630 6 Flue temperature sensor replacement kit 383-500-600 7 System temperature sensors (2 required) 383-500-601 8 Outdoor
gas-fired water boiler — Boiler Manual Replacement parts (continued) Figure 120 Heat exchanger and piping — Ultra-80 and -105 Description Boiler Models Part Number 1 Heat exchanger replacement kit - Heat exchanger, cover plate, burner, electrode, water sensors, compression fittings, condensate fitting, gaskets, and hardware 80NG 80LP 105 383-500-612 383-500-613 383-500-614 2 Cover plate replacement kit - Cover plate, cover plate gasket, burner gasket, and hardware 80/105 383-501-022 3 Cover
gas-fired water boiler — Boiler Manual Replacement parts (continued) MAINTENANCE & SPECIFICATIONS Figure 121 Heat exchanger and piping — Ultra-80 and -105 Go to www.weil-mclain.
gas-fired water boiler — Boiler Manual Replacement parts (continued) Figure 122 Heat exchanger and piping 1 2 3 4 5 6 7 8 9 10 11 12 13 16 17 Description Heat exchanger replacement kit - Heat exchanger, cover plate, burner, electrode, water sensors, compression fittings, condensate fitting, gaskets, and hardware Cover plate replacement kit - Cover plate, cover plate gasket, burner gasket, and hardware Cover plate insulation Cover plate gasket Cover plate studs, M6, 1 pitch Cover plate nuts, M6, 1 pit
gas-fired water boiler — Boiler Manual Replacement parts (continued) Figure 123 Heat exchanger and piping 2 3 4 5 6 8 10 11 13 14 15 16 17 18 19 Heat exchanger replacement kit - Heat exchanger, cover plate, burner, electrode, water sensors, compression fittings, condensate fitting, gaskets, and hardware Cover plate replacement kit - Cover plate, cover plate gasket, burner gasket, and hardware Cover plate insulation Cover plate gasket Cover plate studs, M6, 1 pitch Cover plate nuts, M6, 1 pitch Supply
gas-fired water boiler — Boiler Manual Dimensions Figure 124 Dimensional data Notes 120 1 Boiler supply and return tappings are both 1” NPT (Ultra-80/105/155/230) or 1¼” NPT (Ultra-299). See page 10 for recommended piping sizes. Wall-hung boiler option — water piping and gas pipe can be routed through bottom of enclosure using wall-mounting kit. See page 5 for mounting instructions. 2 Boiler circulator is shipped loose. Circulator must be mounted in the return piping.
gas-fired water boiler — Boiler Manual Ratings — Ultra boilers Figure 125 Ratings and engineering data DOE Boiler Model Number DOE Heating Capacity CSA Input CSA Output Net I=B=R Ratings Boiler Water Content DOE Seasonal Efficiency Vent/Air Pipe Size Btuh (Note 2) Btuh (Note 7) Btuh (Note 7) Btuh (Note 3) Gallons AFUE, % (Note 1) (Note 4) Ultra-80 71,000 80,000 71,000 62,000 0.69 95.2 2” or 3” Ultra-105 94,000 105,000 94,000 81,000 0.82 95.
gas-fired water boiler — Boiler Manual Ratings — multiple Ultra boilers Figure 126 Ratings and engineering data (see Figure 128 for notes) DOE Boilers in system Model Ultra – 80 105 155 230 299 399 2 2 2 2 2 2 3 3 3 3 3 3 4 4 4 4 4 4 5 5 5 5 5 5 6 6 6 6 6 6 7 7 7 7 7 7 8 8 8 8 8 8 122 Manifolded Net combustion water air duct ratings size Total CSA input DOE Heating capacity Boiler H.P.
gas-fired water boiler — Boiler Manual Ratings — multiple Ultra boilers (continued) Figure 127 Engineering data (see Figure 128 for notes) Boiler Model Ultra – Shipping weight Pounds per boiler Operating weight Pounds per boiler Note 4 Water content Water flow rate per boiler Gallons per boiler GPM @ 20°F rise GPM @ 40°F rise Vent/air pipe size — Provide a separate vent for each boiler Electrical service required Note 5 Note 6 Amps per boiler 80 199 139 0.7 7.1 3.6 2” or 3” 15.
gas-fired water boiler — Boiler Manual Installation and Service Certificate Boiler Model Series BTU Input CP Number Date Installed ❏ Installation instructions have been followed. ❏ Check-out sequence has been performed. ❏ Above information is certified to be correct. ❏ Information received and left with owner/maintenance person.
