Mod Con VWH INSTALLATION START-UP MAINTENANCE PARTS VWH Models 300 / 500 / 850 LP / HL / LPHL Heat Exchanger Bears the ASME “H” Stamp This manual must only be used by a qualified heating installer/service technician. Read all instructions in this manual before installing. Perform steps in the order given. Failure to comply could result in substantial property damage, severe personal injury, or death.
IF THE INFORMATION IN THIS MANUAL IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT, CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR LOSS OF LIFE. DO NOT STORE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE. WHAT TO DO IF YOU SMELL GAS • • • • • Do not try to light any appliance. Do not touch any electrical switch. Do not use any phone in your building. Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels, or to important product information. DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
The latest version of the National Electrical Code, NFPA No. 70. NOTE: The gas manifold and controls met safe lighting and other performance criteria when the boiler underwent tests specified in ANSI Z21.13 – latest edition. The hydronic supply and return connections of these products are for installation in closed loop systems ONLY! Use of this product in any manner other than described in this manual may result in premature product failure, substantial property damage, severe personal injury, or death.
C. SYSTEM WATER PIPING METHODS ..................................................................................................................................... 16 D. CIRCULATOR PUMPS ............................................................................................................................................................. 16 E. INSTALLATION OF THE FLOW SWITCH ..............................................................................................................................
B. CHECK FOR GAS LEAKS ........................................................................................................................................................ 51 C. CONDENSATE REMOVAL ...................................................................................................................................................... 51 D. FINAL CHECKS BEFORE STARTING BOILER ....................................................................................................................
DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN SUBMERGED IN WATER. Immediately call a qualified service technician. The appliance MUST BE replaced if it has been submerged. Attempting to operate an appliance that has been submerged could create numerous harmful conditions, such as a potential gas leakage causing a fire and/or explosion, or the release of mold, bacteria, or other harmful particulates into the air.
o VWH Recovery Ratings with Storage Tanks and 40 F Inlet Temperature Mod Con 300 VWH Outlet Recovery Gallons Per First Hour Rating With 80 First Hour Rating With 119 Temperature Hour Gallon Gallon o 80 846 906 935 o 90 677 737 766 o 100 564 624 653 o 110 483 543 572 o 120 423 483 512 o 130 376 436 465 o 140 338 398 427 o 150 308 368 397 o 160 282 342 371 o 170 260 320 349 o 180 242 302 331 o Table 1 – Mod Con 300 VWH Recovery Ratings with Storage Tanks and 40 F Inlet Temperature First Hour Rating With 1
Mixing factor → Mf = 140 – 40 = 1.43 70 First Hour Rating = [1,000,000 x .94 + .75 x 160 ] x 1.43 (140 – 40) x 8.31 First Hour Rating = [940,000 + 120] x 1.43 831 [1,131 + 120] x 1.43 First Hour Rating = [1,251] x 1.43 First Hour Rating = First Hour Rating = 1789 Gallons A.
Supply Water Temperature Sensor – This sensor monitors the boiler outlet water temperature (System Supply). The control adjusts the boiler firing rate so the supply temperature will match the boiler set point. Return Water Temperature Sensor – This sensor monitors the boiler return water temperature (System Return). Temperature and Pressure Gauge – Allows the user to monitor system temperature and pressure.
The service life of the boiler’s exposed metallic surfaces, such as the casing, as well as internal surfaces, such as the heat exchanger, are directly influenced by proximity to damp and salty marine environments. In such areas, higher concentration levels of chlorides from sea spray coupled with relative humidity can lead to degradation of the heat exchanger and other boiler components. In these environments, boilers must not be installed using direct vent systems which draw outdoor air for combustion.
Figure 2 – Dimensions and Specifications LP- 276 REV. 9.4.
C. CLEARANCES FOR SERVICE ACCESS See Figure 3 for recommended service clearances. If you do not provide the minimum clearances shown, it might not be possible to service the boiler without removing it from the space. Space must be provided with combustion/ventilation air openings correctly sized for all appliances located in the same space as the boiler. The boiler venting cover must be securely fastened to prevent it from drawing air from the boiler room.
PRODUCTS TO AVOID Spray cans containing fluorocarbons Permanent wave solutions Chlorinated waxes/cleaners Chlorine-based swimming pool chemicals Calcium chloride used for thawing Sodium chloride used for water softening Refrigerant leaks Paint or varnish removers Hydrochloric or Muriatic acid Cements and glues Antistatic fabric softeners used in clothes dryers Chlorine-type bleaches, laundry detergents, and cleaning solvents Adhesives used to fasten building products Table 4 – Contaminants AREAS LIKELY
H. UNCRATING AND MOVING BOILER Uncrating Boiler – Any claims for damage in shipment must be filed immediately against the transportation company by the consignee. o Cold Weather Handling – If boiler has been stored in a very cold location (below 0 F) before installation, handle with care until the plastic components come to room temperature. Remove all sides of the shipping crate in order to allow the boiler to be lifted into its installation location.
B. RELIEF VALVE Connect discharge piping to a safe disposal location according to the following guidelines. To avoid water damage or scalding due to relief valve operation: • Discharge line must be connected to relief valve outlet and run to a safe place of disposal. • Terminate the discharge line in a manner that will prevent possibility of severe burns or property damage should the relief valve discharge.
The boiler is designed to be connected to a storage tank to supply domestic hot water. HTP offers storage tanks that are 80/119/175 gallon size storage tanks constructed in either stainless steel or glass-lined construction. These storage tanks connect directly to the boiler supply and return connections. Connect the cold water supply to both the storage bottom port and the supply side of the Mod Con VWH (shown in Piping details, this section).
5. Feed green ground wire into boiler through the wire access. 6. From the front of the boiler, feed the ground wire up into the control box. 7. Once into the control box, attach the green ground to the ground bus connection. 8. Connect red wire from flow switch to boiler wire harness. 9. When installation is complete, power up the boiler and use the control to access installer parameter #20 and change the default value to 2 (see Part 11 in this manual).
F. SCALDING When raising tank temperature, you increase the risk of scalding. Please use a water tempering or mixing valve and extreme caution when raising tank temperature to lessen the chance of scalds. Consult codes for conformance.
Table 8 – Mod Con Heat Exchanger Pressure Drop G. HIGH VELOCITY CIRCULATOR PUMP Every VWH system requires special attention to pump size in order to overcome the pressure drop through the boiler and its related piping. All circulators installed on the VWH system must be designed for a potable water system. o Water temperature above 140 F requires the circulator pump to run continuously and water hardness between 5 and 7 grains.
pH of Water pH is a measure of relative acidity, neutrality or alkalinity. Dissolved minerals and gases affect water pH. The pH scale ranges from 0 to 14. Water with a pH of 7.0 is considered neutral. Water with a pH lower than 7 is considered acidic. Water pH higher than 7 is considered alkaline. A neutral pH (around 7) is desirable for most potable water applications. Corrosion damage and heater failures resulting from water pH levels of lower than 6 or higher than 8 ARE NOT covered by the warranty.
I. PIPING DIAGRAMS Figure 6 LP- 276 REV. 9.4.
Figure 7 NOTES: 1. This drawing is meant to demonstrate system piping concept only. Installer is responsible for all equipment and detailing required by local codes. 2. Boiler circulator(s) must be rated for open loop applications. Do not use cast-iron circulators. 3. Boiler circulator(s) operate continuously. 4. The minimum pipe size for connecting to a water storage tank is 1 ½”. 5. The minimum pipe size for connecting the boiler is 1 ½” for the Mod Con 300 VWH and 2” for the 500 and 850 models. 6.
Figure 8 NOTES: 1. This drawing is meant to demonstrate system piping concept only. Installer is responsible for all equipment and detailing required by local codes. 2. Boiler circulator(s) must be rated for open loop applications. Do not use cast-iron circulators. 3. Boiler circulator(s) operate continuously. 4. The minimum pipe size for connecting to a water storage tank is 1 ½”. 5. The minimum pipe size for connecting the boiler is 1 ½” for the Mod Con 300 VWH and 2” for the 500 and 850 models. 6.
Figure 9 NOTES: 1. This drawing is meant to demonstrate system piping concept only. Installer is responsible for all equipment and detailing required by local codes. 2. Boiler circulator(s) must be rated for open loop applications. Do not use cast-iron circulators. 3. Boiler circulator(s) operate continuously. 4. The minimum pipe size for connecting to a water storage tank is 1 ½”. 5. The minimum pipe size for connecting the boiler is 1 ½” for the Mod Con 300 VWH and 2” for the 500 and 850 models. 6.
Figure 10 NOTES: 1. This drawing is meant to demonstrate system piping concept only. Installer is responsible for all equipment and detailing required by local codes. 2. Boiler circulator(s) must be rated for open loop applications. Do not use cast-iron circulators. 3. Boiler circulator(s) operate continuously. 4. The minimum pipe size for connecting to a water storage tank is 1 ½”. 5. The minimum pipe size for connecting the boiler is 1 ½” for the Mod Con 300 VWH and 2” for the 500 and 850 models. 6.
Figure 11 NOTES: 1. This drawing is meant to demonstrate system piping concept only. Installer is responsible for all equipment and detailing required by local codes. 2. Boiler circulator(s) must be rated for open loop applications. Do not use cast-iron circulators. 3. Boiler circulator(s) operate continuously. 4. The minimum pipe size for connecting to a water storage tank is 1 ½”. 5. The minimum pipe size for connecting the boiler is 1 ½” for the Mod Con 300 VWH and 2” for the 500 and 850 models. 6.
Figure 12 NOTES: 1. This drawing is meant to demonstrate system piping concept only. Installer is responsible for all equipment and detailing required by local codes. 2. Boiler circulator(s) must be rated for open loop applications. Do not use cast-iron circulators. 3. Boiler circulator(s) operate continuously. 4. The minimum pipe size for connecting to a water storage tank is 1 ½”. 5. The minimum pipe size for connecting the boiler is 1 ½” for the Mod Con 300 VWH and 2” for the 500 and 850 models. 6.
1. Installation should be made in accordance with the regulations of the Authority Having Jurisdiction, local code authorities, and utility companies which pertain to this type of water heating equipment. 2. Install the venting system in accordance with these instructions and with the National Fuel Gas Code, ANSI Z223.1/NFPA 54, CAN/CGA B149, and/or applicable provisions of local building codes. 3.
• • • • • • The air inlet and exhaust components installed with this boiler must be used for near boiler piping BEFORE transitioning to the approved materials listed above. DO NOT REMOVE these installed components. Doing so WILL VOID boiler warranty. PVC/CPVC pipe and fittings of the same diameter are considered interchangeable. Do NOT use Foam Core Pipe in any portion of the exhaust piping from this boiler. DO NOT connect PVC/CPVC to PP without an approved vent connector.
Figure 13 D. EXHAUST VENT AND INTAKE AIR VENT PIPE LOCATION You must insert the provided intake and exhaust screen at your vent termination to prevent blockage caused by debris or birds. NOTE: SEE ADDITIONAL REQUIREMENTS FOR MASSACHUSETTS IN THE BACK OF THIS MANUAL. 1. Determine exhaust vent location: • Total length of vent may not exceed the limits specified in the Venting Section, Part 6. • The vent piping for this boiler is approved for zero clearance to combustible construction.
NOTE: In Canada, follow CAN/CGA B149.1-M95 where natural gas fired appliances are used, and CAN/CGA B149.2-M95 where propane fired appliances are used. 2. Determine air intake vent location: • Provide 1 foot of clearance from the bottom of the intake vent and the level of maximum snow accumulation. Snow removal may be necessary to maintain clearances. • Do not locate the intake air vent in a parking area where machinery may damage the vent. • Follow required minimum clearances located in Figure 13.
Figure 14 – Condensate Piping NOTE: Blow water into the condensate collector to remove any foreign matter that may block the line. NOTES: 1. Condensate line must be pitched at least 1/4" per foot to properly drain. If this cannot be done, or a very long length of condensate hose is used, you must increase the condensate line to a minimum of 1” ID and place a tee in the line after the condensate neutralizer to properly reduce vacuum lock in the drain line. 2.
2. The total combined equivalent length of exhaust vent and intake air pipe should not exceed 200 feet. a. The equivalent length of friction loss in elbows, tees, and other fittings are listed in Table 11.
6. To prevent water leakage, install adequate roof flashing where the pipe enters the roof. 7. Do not locate vent over public walkways, driveways, or parking lots. Condensate could drip and freeze, resulting in a slip hazard or damage to vehicles and machinery. 8. Due to potential moisture build-up, sidewall venting may not be the preferred venting option. To save time and cost, carefully consider venting installation and location. 9.
I. SIDEWALL VENTING DIAGRAMS Figure 16 – Sidewall Venting Diagrams All vent pipes must be glued, properly supported, and the exhaust must be pitched a minimum of ¼” per foot back to the boiler to allow drainage of condensate. Exhaust connection insertion depth should be a minimum of 2 ½” for models 300/500 and 3” for 850. When placing support brackets on vent piping, the first bracket must be within 1’ of the appliance and the balance at 4’ intervals on the vent pipe.
Figure 17 – Sidewall Venting with Tee and Coupling All vent pipes must be glued, properly supported, and the exhaust must be pitched a minimum of ¼” per foot back to the boiler to allow drainage of condensate. Exhaust connection insertion depth should be a minimum of 2 ½” for models 300/500 and 3” for 850. When placing support brackets on vent piping, the first bracket must be within 1’ of the appliance and the balance at 4’ intervals on the vent pipe.
J. VERTICAL VENTING DIAGRAMS Figure 18 – Two Pipe Roof Venting with Tee and Coupling All vent pipes must be glued, properly supported, and the exhaust must be pitched a minimum of ¼” per foot back to the boiler to allow drainage of condensate. Exhaust connection insertion depth should be a minimum of 2 ½” for models 300/500 and 3” for 850. When placing support brackets on vent piping, the first bracket must be within 1’ of the appliance and the balance at 4’ intervals on the vent pipe.
Figure 19 – Roof and Sidewall Venting with Stainless Steel All vent pipes must be glued, properly supported, and the exhaust must be pitched a minimum of ¼” per foot back to the boiler to allow drainage of condensate. Exhaust connection insertion depth should be a minimum of 2 ½” for models 300/500 and 3” for 850. When placing support brackets on vent piping, the first bracket must be within 1’ of the appliance and the balance at 4’ intervals on the vent pipe.
PART 6 – GAS PIPING FAILURE TO FOLLOW ALL PRECAUTIONS IN THIS SECTION COULD RESULT IN FIRE, EXPLOSION, OR DEATH! A. GAS CONNECTION The gas supply shall have a maximum inlet pressure of less than 14" w.c. (3.5 kPa), and a minimum of 3.5" w.c. (.87 kPa). The entire piping system, gas meter and regulator must be sized properly to prevent pressure drop greater than 0.5" (.12 kPa) as stated in the National Fuel Gas Code. This information is listed on the rating label.
Never use an open flame (match or lighter) to check for gas leaks. Use a soapy solution to test connection. Failure to use a soapy solution test or check gas connection for leaks could result in substantial property damage, severe personal injury, or death. Use a two-wrench method when tightening gas piping near the boiler and its piping connection: One wrench to prevent the boiler gas line connection from turning; the second to tighten the adjacent piping.
The gas piping must be sized for the proper flow and length of pipe to avoid pressure drop. The gas meter and regulator must be properly sized for the total gas load. If you experience a pressure drop greater than 1" w.c. (.87 kPa), the meter, regulator or gas line may be undersized or in need of service. You can attach a manometer to the incoming gas drip leg after removing the cap. The gas pressure must remain between 3.5" (.87 kPa) and 14" (3.
Figure 22 – Mod Con 850 Gas Valve Do not do a gas conversion on this boiler without an officially approved conversion kit and instructions supplied by HTP. Failure to use a conversion kit when converting the boiler to fire on Natural or LP gas will result in extremely dangerous burner operation, leading to fire, explosion, severe injury or death.
PART 7 – FIELD WIRING To avoid electrical shock, turn off all power to the appliance prior to opening an electrical box within the unit. Ensure the power remains off while any wiring connections are being made. Failure to follow these instructions could result in component or product failure, serious injury, or death. Such product failure IS NOT covered by warranty. ELECTRICAL SHOCK HAZARD - Turn off electrical power supply at service entrance panel before making any electrical connections.
use of a pipe sensor will be somewhat less accurate than using a sensor in the tank, and has the disadvantage of requiring the boiler pump(s) to run continuously so the sensor is always measuring the tank water temperature. In a multiple Mod Con VWH installation, where the boilers are connected for cascade operation, a system sensor is needed in addition to the tank or pipe sensor described above.
F. LOW VOLTAGE CONNECTIONS FOR STANDARD BOILER All low voltage cables should enter the electrical junction box through the provided knock out holes shown in Figure 23. Connect all low voltage field devices in the low voltage terminal strip located in the electrical junction box (shown in Figure 24). G. TANK SENSOR OR MECHANICAL CONTROL Connect the tank sensor or mechanical controls to the TANK SENSOR terminals of the low voltage terminal strip show in Figure 24.
Figure 25 – LP-205-JJ Figure 26 – Cascade Resistor Plug Installation Detail M. VWH CASCADE MASTER PUMP AND SENSOR WIRING 1. Place the cascade master overlay sticker onto the field connection board on the boiler designated as the cascade master. 2. If it is desired to have the boiler control the boiler pump, connect the boiler pump to the BOILER HOT, BOILER NEUT, and BOILER GND terminals. 3. Connect the system sensor to the terminals marked SYS SENSOR. 4.
Figure 27 – Mod Con VWH Cascade Master and Follower N. VWH CASCADE FOLLOWER PUMP AND SENSOR WIRING 1. If it is desired to have the boiler control the boiler pump, connect the boiler pump to the BOILER HOT, BOILER NEUT, and BOILER GND terminals. 2. Connect the tank sensor(s) or return sensor to the terminals marked TANK SENSOR on the follower boiler addressed as 1. There are no connections to these terminals on other follower boilers in the system. 3.
Figure 28 – Mod Con Internal Connection Diagram – LP-255 LP- 276 REV. 9.4.
PART 8 – START-UP PREPARATION A. CHECK / CONTROL WATER CHEMISTRY It is recommended that you test your water quality prior to installation. Listed below are some guidelines. Do not use petroleum-based cleaning or sealing compounds in the boiler system. Damage to elastomer seals and gaskets in the system could occur, resulting in substantial property damage. Chemical imbalance of your water can cause severe damage to your water heater and associated equipment, and may also affect efficiency.
Sodium: 20 mGL B. CHECK FOR GAS LEAKS Before starting the boiler, and during initial operation, 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 leaks at once. PROPANE BOILERS ONLY – Your propane supplier mixes an odorant with the propane to make its presence detectable.
When a demand for hot water is received, the control begins the following demand sequence. The boiler first turns on the pump (if it is not wired to run continuously). Once the pump is running, the control will display FL and wait for the water flow in the system to increase to an acceptable level determined by the flow switch on the outside of the boiler. (NOTE: This step may happen very rapidly. If flow is adequate, FL may never display.
d. Verify that parameter 15 is set to 0. This makes the master boiler address 0. NOTE: The Master Boiler MUST be addressed as 0. e. Change parameter 23 from 0 to 1. f. Exit the installer menu. NOTE: The temperature set point of the master must match the follower boiler set point in order for the system to operate properly. 3. Programming Follower Boilers: • • • • NOTE: READ THE NOTES BELOW BEFORE PROGRAMMING FOLLOWER BOILERS The boiler addressed as 1 will share its alarm output with the master boiler.
pressing on top of the plastic cover over the red reset button. You will note that the yellow LED has gone out. Press and hold the {S4} key on the control panel for 4 seconds to begin normal operation. 4. If the tank water temperature is below the tank set point temperature (tank differential temperature) the boiler will ignite. 5. If the appliance fails to start, refer to Troubleshooting, Part 11. B.
|d4| — Not used. |d5| — Not used. |d6| — Actual fan speed multiplied by 10 (Example: If fan speed displayed is |410| RPM x 10 = 4100 actual fan speed) |d7| — Actual ionization current read from flame rectification probe |d8| — 0 (not used). |d9| — Circulator pump - Off = |0|, On = |1|. |d10| — Actual status of bus communication |co| = connected, |nc| = not connected |d11| — Storage tank set point |d12| — Power on hours in thousands (display will not read until 100 hrs).
MODEL 300 500 850 Table 16 – Fan Speeds IGNITION 3000 3000 3000 MOD CON FAN SPEEDS MIN 1250 1250 1500 MAX 5500 6930 5400 PART 10 – START-UP PROCEDURES FOR THE INSTALLER A. PROGRAMMING FOR THE INSTALLER This section describes each parameter the installer can access to customize the settings of the VWH boiler for a particular installation. These system limits should not be changed by the user.
20 2 21 0 22 100% 23 0 24 24 25 26 0 --- 27 0 28 0 29 0 30 0 31 Table 17 FUNCTION 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Table 18 0 Flow switch. Do not change. 0 = none, 1 = water pressure switch, 2 = flow switch, 3 = low water cut-off N/A (no change required) This parameter can be adjusted to lower the maximum boiler output. Default = 100%. Ex: 500 boiler setting at 80% will go to 400,000 BTU/hr max rather than 500,000 BTU/hr. Range: 50 – 100%. Cascade configuration (Default 0).
C. BOILER FAULT 1. When a fault condition occurs, the controller will illuminate the red “fault” indication light and display a fault code. The alarm output will also be activated. Most fault conditions will also cause the CH pump to run in an attempt to cool the boiler. 2. Note the fault code and refer to Table 20 for an explanation of the fault code along with several suggestions for corrective actions. 3. Press the reset key to clear the fault and resume operation.
E03 System sensor failure (Cascade Master only) FL Low water flow (Users with optional flow switch only). 1. Check wiring to system sensor. Repair as necessary. 2. Check sensor resistance. Compare to the resistance table in this manual. Replace if not correct. 1. Check to see if boiler circulator is functioning. Repair as necessary. 2. Be sure water is flowing in the system. Check for valves that should be open, plugged filter screens, etc. 3. Check flow switch and wiring. Repair as necessary.
F20 Condensate cup is full pp Parameters programmed F31 Program parameter error 1. Check condensate lines for obstructions. 2. Check float switch in condensate reservoir. 3. Check wiring from condensate reservoir to 926 control and repair as necessary. Press {S4} reset for at least 1 second. Control must be re-programmed. If programming does not solve problem, control must be replaced.
The combustion chamber insulation in this product contains ceramic fiber material. Ceramic fibers can be converted to cristobalite in very high temperature applications. The International Agency for Research on Cancer (IARC) has concluded, “Crystalline silica inhaled in the form of quartz or cristobalite from occupational sources is carcinogenic to humans (Group 1).” • Avoid breathing dust and contact with skin and eyes. • Use NIOSH certified dust respirator (N95).
f. Replace the (4) screws on the aluminum connector on the gas valve. Turn the gas back on. (IMPORTANT: CHECK FOR GAS LEAKS BEFORE TURNING THE APPLIANCE ON!) g. Turn the boiler power back on and create a demand on the boiler. When boiler is lit, observe condensate flow from the boiler. Be sure the boiler is operating properly. h. Re-connect the condensate piping to the outside condensate connection. C. CLEANING WATER SIDE OF HEAT EXCHANGER 1. Make sure power is turned off to the boiler.
Figure 31 LP- 276 REV. 9.4.
Figure 32 LP- 276 REV. 9.4.
Figure 33 – NOTE: Ceramic Refractory Part # 7250P-162 LP- 276 REV. 9.4.
Figure 34 LP- 276 REV. 9.4.
Figure 35 LP- 276 REV. 9.4.
BOILER START-UP REPORT LIGHT OFF ACTIVITIES 1) Fill the heating system 2) Check gas pipe 3) Check combustion 4) Verify system operation 5) Record ionization current 6) Indirect water heater 7) Convert the heater 8) System Setting Notes: Table 21 Check all piping and gas connections, verify all are tight Pressurize system Add water to prime condensate cup Verify near heater piping is properly supported Leak test using locally approved methods (consult jurisdictional code book) Check incoming gas pre
INSPECTION ACTIVITIES PIPING Near heater piping Vent Gas SYSTEM Visual Functional Temperatures Temperatures ELECTRICAL Connections Smoke and CO detector Circuit Breakers Switch and Plug CHAMBER/BURNER Combustion Chamber Spark Electrode Flame Probe CONDENSATE Neutralizer Condensate hose GAS Pressure Pressure Drop Check gas pipe for leaks COMBUSTION CO/CO2 Levels SAFETIES ECO (Energy Cut Out) Flow Switch Thermistors FINAL INSPECTION Check list Homeowner DATE LAST COMPLETED 1st YEAR 2nd YEAR 3rd YEA
LP- 276 REV. 9.4.
LP- 276 REV. 9.4.
MAINTENANCE NOTES LP- 276 REV. 9.4.
HTP CUSTOMER INSTALLATION RECORD FORM The following form should be completed by the installer for you to keep as a record of the installation in case of a warranty claim. After reading the important notes at the bottom of the page, please also sign this document.
