® ™ GOLD CGa Gas-Fired Water Boilers Boiler Manual s )NSTALLATION s -AINTENANCE s 3TARTUP s 0ARTS This manual must only be used by a qualified heating installer/service technician. Before installing, read all instructions, including this manual, the burner manual and any related supplements. Perform steps in the order given. Failure to comply could result in severe personal injury, death or substantial property damage. Part No.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual How it works . . . x y z { | } ~ Control module The control module (used on SPARK IGNITED PILOT BOILERS) responds to signals from the room thermostat and boiler limit circuit to operate the boiler circulator, pilot burner, gas valve and vent damper. When room thermostat calls for heat, the control module starts the system circulator and activates the vent damper (causing it to drive open).
GOLD CGa Gas-Fired Water Boiler — Boiler Manual GOLD CGa Gas-Fired Water Boiler Part Number 550-101-009/0107 3
GOLD CGa Gas-Fired Water Boiler — Boiler Manual Contents How is works .................................................... 2-3 Hazard definitions ............................................... 4 Please read before proceeding ............................ 5 1 Prepare boiler location ...................................6–11 2 Prepare boiler............................................... 12-15 3 Water pi ping ................................................. 16-25 4 Gas pi ping ..........................
GOLD CGa Gas-Fired Water Boiler — Boiler Manual Please read before proceeding Installer User 2EAD ALL INSTRUCTIONS BEFORE IN stalling. Follow all instructions in s s proper order to prevent personal injury or death. #ONSIDER PIPING AND INSTALLATION when determining boiler location. !NY CLAIMS FOR DAMAGE OR SHORTAGE IN SHIPMENT must be filed immediately against the transportation company by the consignee.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 1a Prepare boiler location — codes & checklist Installations must follow these codes: s s s s s ,OCAL STATE PROVINCIAL AND NATIONAL CODES LAws, regulations and ordinances. .ATIONAL &UEL 'AS #ODE !.3) : nLATEST EDITION 3TANDARD FOR #ONTROLS AND 3AFETY $EVICES FOR !UTOMATICALLY &IRED "OILERS !.3) !3-% #3$ WHEN REQUIRED .
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 1b Prepare boiler location — clearances &IGURE B Required MINIMUM clearances $O NOT INSTALL BOILER ON CARPETING EVEN if foundation is used. Fire can result, causing severe personal injury, death or substantial property damage. )F ANY CLEARANCE IS LESS THAN IN &IGURE 1a PROVIDE OPENINGS FOR COMBUSTION AND VENTILATION AIR located on the wall or door opposite the boiler FRONT (see Figure 1b).
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 1c Prepare boiler location — vent system Failure to follow all instructions can result in flue gas spillage and carbon monoxide emissions, causing severe personal injury or death. Inspect existing chimney before installing boiler. Failure to clean or replace perforated pipe or tile lining will cause severe personal injury or death.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 1d Prepare boiler location — air contamination Please review the following information on potential combustion air contamination problems. Refer to 4ABLE for products and areas which may cause contaminated combustion air. To prevent potential of severe personal injury or death, check for products or areas listed below before installing boiler.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 1e Prepare boiler location — air openings #OMBUSTION AIR OPENING LOCATION AND SIZING REQUIREMENTS DEPEND ON THE CLEARANCES AROUND THE BOILER #HECK THE BOILER PLACEMENT COMPARED to Figure 1a, page 7. )F ALL CLEARANCES ARE AT LEAST EQUAL TO &IGURE A PAGE , apply the sizing and placement of openings given on pages 10 and 11. )F !.9 CLEARANCE IS LESS THAN &IGURE A PAGE , you must provide air openings sized and located as shown in Figure 1b, page 7. $/ .
GOLD CGa Gas-Fired Water Boiler — Boiler Manual FREE AREA of openings — the minimum areas given in this manual are free area (equals the area, length times width of opening, after deduction for louver obstruction). Use the free area information provided by the louver manufacturer. When this information is not available, assume: s 7OOD LOUVERS ASSUME FREE AREA IS OF TOTAL SO THE ACTUAL AREA of each opening with wood louvers would be 5 times the required free area.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 2a Prepare boiler — placement and setup #ORRECTLY SIZED MANIFOLD ORIFICES must be used. Failure to do so will result in severe personal injury, death or substantial property damage. Place boiler/crate near position 1. ,EAVE BOILER IN CRATE AND ON PALLET until installation site is ready. 2. Move entire crate and pallet next to selected location. 3. Level and straighten burners.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 2b Prepare boiler — pressure test Hydrostatic pressure test Pressure test boiler BEFORE attaching water or gas piping or electrical supply (except as noted below). Prepare boiler for test 2EMOVE THE SHIPPING NIPPLE FROM #'A SUPPLY tapping) and remove the boiler relief valve. 4EMPO RARILY PLUG THE RELIEF VALVE TAPPING WITH A Ðv .04 pipe plug. 2EMOVE v NIPPLE REDUCING TEE AND DRAIN VALVE from accessory bag.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual Prepare boiler — draft hood & spill switch Draft hood installation Spill switch installation 1. Orient draft hood with spill switch mounting holes to front of boiler as shown in Figure 7. 2. Secure draft hood to outlet at top of boiler with sheet metal screws. "OTTOM OF DRAFT HOOD OR hSKIRTv MUST HAVE CLEARANCE DIMENSION ABOVE jacket top panel as indicated on draft hood.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 2e Prepare boiler — vent damper installation These systems are used on gas-fired boilers with vent DAMPERS AS SHIPPED FROM FACTORY "OILER WILL NOT OPERATE without vent damper installed. Only vent dampers listed in the Replacement parts list ON PAGE ARE CERTIlED FOR USE WITH #'A BOILERS !NY other vent damper installed could cause severe personal injury or death.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 3a Water piping — general information General piping information Circulator )F INSTALLATION IS TO COMPLY WITH !3-% OR #ANADIAN REQUIREMENTS AN ADditional HIGH TEMPERATURE LIMIT is needed. Install control in supply piping between boiler and isolation valve. Set second control to minimum 20°F above setpoint of first control. Maximum allowable setpoint is 240°F. See page 34 or 38, for wiring.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 3b Water piping — single-zone system Undersized expansion tanks cause system water to be lost from relief valve and makeup water to be added through fill valve. Eventual section failure can result. Diaphragm-type or bladdertype expansion tank (Figure 9) Closed-type expansion tank 1. Ensure expansion tank size will handle boiler and system water volume and temperature.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 3c Water piping — multiple zones Piping multiple zones Follow instructions on pages 16 and 17 to install nearboiler or single-zone piping. (Also refer to 0IPING FOR RADIANT HEATING SYSTEMS OR CONVERTED GRAVITY SYS TEMS below, if applicable.) See &IGURE or &IGURE PAGE TO COMPLETE IN- stallation. Zoning with circulators (Figure 11) (return temp over 130°F) 1. Size each circulator to individual circuit requirements.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 3c Water piping — multiple zones (continued) For systems with possible low return-water temperature (such as converted gravity systems, radiant heating systems and heat pump systems), refer to the special piping suggestions of &IGURES n , as applies. Failure to prevent sustained low return water temperature to the boiler could cause corrosion of the boiler sections, resulting in severe personal injury, death or substantial property damage.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 3d Piping — low temperature systems Primary/secondary (preferred) Bypass piping method 0RIMARY SECONDARY bypass piping is preferred because the flow rate and temperature drop in the heating circuit(s) is determined only by the heating circuit circulator(s). So adjustment of the bypass valves in the boiler circuit will not cause a change in the heating circuit rate and temperature distribution.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 3d Piping — low temperature systems (continued) 10 Automatic air vent (with diaphragm-type expansion 1 "OILER ISOLATION BALANCING VALVES 2 Flow/check valve 3 System or zone circulator (circulator should cycle with zone valve and switches, using circulator valve or zone control panel) 4 System temperature gauges 11 Fill valve 5 :ONE VALVE 12 $IAPHRAGM TYPE OR BLADDER TYPE EXPANSION TANK 6 $RAIN VALVE 7 System temperature valves (see instruc
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 3d Piping — low temperature systems BOILER-bypass piping method This piping method (&IGURE or , page 23) is called a BOILER BYPASS because part of the circulator flow is bypassed around the boiler (through valve A).
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 3d Piping — low temperature systems 1 "OILER ISOLATION BALANCING VALVES 2 Flow/check valve 3 System or zone circulator 4 System temperature gauges 5 :ONE VALVE 6 $RAIN VALVE 7 System temperature valves (see instructions to the left for adjusting valves) 8 "LEND TEMPERATURE GAUGE 9 Relief valve Part Number 550-101-009/0107 (continued) 10 Automatic air vent (with diaphragm-type expansion tank), or connect to tank fitting (closed-type expa
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 3d Piping — low temperature systems SYSTEM-bypass piping method This piping method (&IGURE , page 25) is called a SYS TEM BYPASS because part of the circulator flow bypasses the system (through valve A).
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 3d Piping — low temperature systems 3e Water piping — refrigeration systems (continued) 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 18 for typical installation of balancing valve and check valve.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 4 Gas piping Connect gas supply piping to boiler Natural Gas: 1. Remove jacket front panel and refer to &IGURE to pipe gas to boiler. 1. Refer to 4ABLE FOR PIPE LENGTH AND DIAMETER "ASE on rated boiler input (divide by 1,000 to obtain cubic feet per hour). 4ABLE is only for gas with SPECIlC a. )NSTALL DRIP LEG at inlet of gas connection to boiler.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual Field wiring 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. 7IRING MUST BE . % # #LASS If rollout thermal fuse element wire as supplied with boiler must be replaced, type # wire or equivalent must be used.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 6a Start-up — preparation Check for gas leaks "EFORE STARTING THE BOILER AND DURing initial operation, smell near the floor and around the boiler for gas ODORANT OR ANY UNUSUAL ODOR $O not proceed with start-up if there is any indication of a gas leak. Repair any leak at once. 0ROPANE BOILERS ONLY 9OUR PROpane supplier mixes an odorant with the propane to make its presence detectable.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 6a Start-up — preparation (continued) Fill the system with water Inspect system water piping #LOSE MANUAL AND AUTOMATIC AIR VENTS and boiler drain cock. After filling the boiler and system with water, INSPECT ALL PIPING throughout the system for leaks. If found, repair immediately. Repeat this inspection after the boiler has been started and the system has heated up. 2.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 6b Start-up — operate boiler $/ ./4 proceed with boiler operation unless boiler and system have been filled with water and all instructions and procedures of previous manual sections have been completed. Failure to do so could result in severe personal injury, death or substantial property damage. "EFORE STARTING THE BOILER DO THE FOLLOWING s 2EAD MANUAL 3ECTION and the ,IGHTING /PERATING INSTRUCTION procedure (see 4ABLE , below).
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 6b Start-up — operate boiler (continued) Start the boiler s s &OLLOW THE ,IGHTING /PERATING )NSTRUCTIONS from 3ECTION OR to start the boiler. Remove boiler jacket door and note the gas valve manufacturer and model number. Use only the lighting/operating instruction which applies to this gas valve (see 4ABLE , page 30). (The lighting instruction label on the boiler provides the same information.) 3EE 3ECTION C if boiler fails to start.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 6d Start-up — verify operation 4HE BOILER MODEL SUFlX WILL BE h30$v &OR SPARK IGNITED PILOT BOILERS SUFlX h0)$v SEE 3ECTION or for operation and lighting/operating information. Check burner flames &IGURE Typical pilot burner flame Pilot burner flame (&IGURE ) PROPER pilot flame "LUE mAME 2. Inner cone engulfing thermocouple (standing pilot) or pilot flame sensor (spark-ignited pilot). 3. Thermocouple or pilot flame sensor glowing cherry red.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 7 O O O O O O O O O O O O Check-out procedure — checklist "OILER AND HEAT DISTRIBUTION UNITS lLLED WITH WATER !UTOMATIC AIR VENT IF USED OPEN ONE FULL TURN !IR PURGED FROM SYSTEM !IR PURGED FROM GAS PIPING 0IPING CHECKED FOR LEAKS #ORRECTLY SIZED MANIFOLD ORIlCES INSTALLED 2EFER TO 4ABLE , page 12 to check size and fuel type.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 8a Operation — standing pilot boilers Follow all procedures given in this manual and lighting instructions when operating the boiler. Failure to do so could result in severe personal injury, death or substantial property damage. 1. 3TANDBY MODE After pilot is manually lit, the gas valve provides pilot gas and maintains pilot as long as the thermocouple is satisfied.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 8b Lighting instructions CGa-25 to CGa-8 Part Number 550-101-009/0107 s 3TANDING PILOT s .
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 8b Lighting instructions CGa-25 to CGa-8 36 s 3TANDING PILOT s .
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 9a Operation — spark-ignited pilot boilers Follow all procedures given in this manual and operating instructions when operating the boiler. Failure to do so could result in severe personal injury, death or substantial property damage. 1. 3TANDBY With no call for heat, the vent damper and circulator are de-energized. .O GAS mOWS TO PILOT OR MAIN GAS VALVE 2.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 9a Figure 25a 38 Operation — spark-ignited pilot system (continued) Schematic wiring diagram — Spark-ignited pilot system Part Number 550-101-009/0107
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 9a Operation — spark-ignited pilot system (continued) Figure 25b Ladder wiring diagram — Spark-ignited pilot system Part Number 550-101-009/0107
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 9b Operating instructions CGa-25 to CGa-8 40 s 3PARK PILOT s .
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 9b Operating instructions CGa-25 to CGa-6 Part Number 550-101-009/0107 s 3PARK PILOT s .
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 9b Operating instructions CGa-25 to CGa-6 42 s 3PARK PILOT s .
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 9b Operating instructions CGa-7 to CGa-8 Part Number 550-101-009/0107 s 3PARK PILOT s .
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 10a Service and maintenance — schedule VERIFY PROPER OPERATION AFTER SERVICING 4ABLE Service and maintenance schedules (service technician and user) Service technician Owner maintenance (see following pages for instructions) (see CGa User’s Information Manual for instructions) s #HECK BOILER AREA Inspect: s 2EPORTED PROBLEMS Daily s #HECK AIR OPENINGS s #HECK BOILER PRESSURE TEMPERATURE GAUGE s "OILER AREA s !IR OPENINGS s &LUE GAS VENT SYSTEM
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 10b Service & maintenance — annual start-up 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 Table 6, page 44, 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.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 10b Service & maintenance – annual start-up O Inspect . . . Boiler heating surfaces $ISCONNECT THE VENT PIPE AT THE BOILER DRAFT HOOD and remove draft hood after turning off power to the boiler. 2. Use a bright light to inspect the boiler flue collector and heating surfaces. 3. If the vent pipe or boiler interior surfaces show evidence of soot, follow #LEANING BOILER HEATING SURFACES in this manual section.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 10b Service & maintenance – annual start-up O Check/test Gas piping 1. Sniff near floor and around boiler area for any indication of a GAS LEAK. 2. 4EST GAS PIPING USING BUBBLE TEST per Section of this manual, if there is any indication of a leak. Cold fill and operating pressures 1. While the system is cold, note the PRESSURE READING ON THE BOILER PRESSURE TEMPERATURE GAUGE 6ERIFY THAT cold fill pressure is correct. 2.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 10b Service & maintenance – annual start-up O Check/test (cont.) (continued) Safety relief valves should be REINSPECTED !4 ,%!34 /.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 10b Service & maintenance – annual start-up O Cleaning boiler heating surfaces The boiler contains ceramic fiber and fiberglass materials. Use care when handling these materials per instructions on PAGE of this manual. Failure to comply could result in severe personal injury. 1. Shut down boiler: s &OLLOW h4O 4URN /FF 'AS TO !PPLIANCEv INstructions on boiler and ,IGHTING OR /PERATING INSTRUCTIONS.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 11a Troubleshooting — procedure (continued) Check the following: 1. Wire connectors to control module are securely plugged in at module and originating control. 'AS PRESSURES A 7ITH BOILER OFF v W C MAXIMUM NATURAL or propane gas pressure upstream of gas valve. b. With boiler on: s v W C MINIMUM NATURAL GAS PRESSURE OR v W C PROPANE GAS PRESSURE UPSTREAM OF gas valve.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 11b Troubleshooting — standing pilot boilers CHART 1 — Standing pilot — Boiler will not fire Is damper harness securely plugged in at both ends? Secure connections. No Check for loose wire connections or bad relay on transformer. Yes Is 24VAC present across transformer terminals C & Y? No Check for open thermostat, LWCO, high limit, spill switch or rollout thermal fuse element contacts or check for loose wire connections.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 11c Troubleshooting — spark-pilot boilers The information on this page and PAGES THROUGH APPLY ONLY TO SPARK IGNITED PILOT #'A BOILERS These boilers are equipped with an ignition control module that has indicator lights to show control status. #HARTS 2 through PAGES help you identify problems based on indicator light conditions.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 11c Troubleshooting — spark-pilot boilers Part Number 550-101-009/0107 (continued) 53
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 11c Troubleshooting — spark-pilot boilers (continued) CHART 2 — Spark-ignited pilot — Troubleshooting POWER light status — Usually indicates reversed 120 VAC polarity if POWER light flashes by itself — Electrical shock hazard — Wherever you see TURN OFF POWER , follow the instructions. Failure to follow instructions could result in severe personal injury, death or substantial property damage. Is POWER light off? No • Yes • • Is POWER light...
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 11c Troubleshooting — spark-pilot boilers (continued) CHART 3 — Spark-ignited pilot — TSTAT CIRC & POWER lights flashing — Usually indicates 48 VAC on thermostat circuit (stray voltage) — Electrical shock hazard — Wherever you see TURN OFF POWER , follow the instructions. Failure to follow instructions could result in severe personal injury, death or substantial property damage.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 11c Troubleshooting — spark-pilot boilers (continued) CHART 4 — Spark-ignited pilot — DAMPER light flashing — If POWER light is flashing: Usually indicates vent damper failed to prove open within 5 minutes — — If POWER light is steady: Usually indicates vent damper closed during run cycle — Electrical shock hazard — Wherever you see TURN OFF POWER , follow the instructions.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 11c Troubleshooting — spark-pilot boilers (continued) CHART 5 — Spark-ignited pilot — FLAME & POWER lights flashing — Usually indicates flame sensed when it shouldn't be there — Electrical shock hazard — Wherever you see TURN OFF POWER , follow the instructions. Failure to follow instructions could result in severe personal injury, death or substantial property damage.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 11c Troubleshooting — spark-pilot boilers (continued) CHART 6 — Spark-ignited pilot — FLAME light flashing and POWER light on steady ALSO — Troubleshooting failure to establish main flame Electrical shock hazard — Wherever you see TURN OFF POWER , follow the instructions. Failure to follow instructions could result in severe personal injury, death or substantial property damage.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 11c Troubleshooting — spark-pilot boilers (continued) CHART 7 — Spark-ignited pilot — Insufficient heat or no heat (POWER light on steady) Electrical shock hazard — Wherever you see TURN OFF POWER , follow the instructions. Failure to follow instructions could result in severe personal injury, death or substantial property damage. • Has it been at least 5 minutes since setting thermostat to call for heat? If not, wait 5 minutes.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 12a Replacement parts Section assembly .............................................. 61 Base .................................................................. 62 Jacket ............................................................... 63 Trim ................................................................... 64 Controls ............................................................
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 12b Replacement parts — section assembly Item Description number 1 2 3 not shown Weil-McLain part number 5 6 7 End section, left hand, 51124 End section, right hand, 51128 Intermediate section, 51125 Replacement section CGa-25 & CGa-3 assembly CGa-4 CGa-5 CGa-6 CGa-7 CGa-8 Section replacement kit, includes seals and sealant for 1 joint Tie rod, " without nut CGa-25 & CGa-3 (3 per boiler): CGa-4 CGa-5 CGa-6 CGa-7 & CGa-8 Nut, " (2 per tie rod) Was
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 12c Replacement parts — base &IGURE Base assembly, manifold, orifices and burners Item Description Weil-McLain number part number Base assembly kit (includes base panels items 1, 2, 3, 4, 5, 6, and 7, plus insulation, air box gaskets, and hardware) 62 CGa-25 CGa-3 CGa-4 CGa-5 CGa-6 CGa-7 CGa-8 381-354-355 381-354-356 381-354-357 381-354-358 381-354-359 381-354-360 381-354-361 1 Base side panel (in Base assembly) 2 Base front cross-tie assembly
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 12d &IGURE Replacement parts — jacket Jacket assembly 1 2 3 4 Junction box, 2 x 4 Jacket panel, left side, with insulation Jacket panel, right side, with insulation Jacket panel, top front Natural Gas Standing Pilot Boiler Model CGa-25 CGa-3 CGa-4 CGa-5 CGa-6 CGa-7 CGa-8 Boiler Model CGa-25/3 CGa-4 CGa-5 CGa-6 CGa-7 CGa-8 Propane Gas Standing Pilot Natural Gas Spark Pilot Boiler Model Weil-McLain part number (Available at local supply hous
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 12e Replacement parts — trim &IGURE Item number 1 Trim assembly Description Manufacturer Manufacturer’s part number Weil-McLain part number Conbraco Watts Conbraco Watts 10-407-10 M330 10-408-05 335 511-546-920 Pressure relief valve, ASME, 30 PSIG, ¾" male inlet Pressure relief valve, ASME, 30 PSIG, ¾" female inlet (Fittings shown are factory-installed on boiler.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 12f Replacement parts — controls &IGURE Gas control assembly Item number Description Standing pilot — Natural gas components 1 Gas valve, 1/2" x 1/2", CGa-25 through CGa-6 2 3 4 1 2 3 4 5 not shown Gas valve, 3/4" x 3/4", CGa-7 and CGa-8 Pilot assembly kit with orifice Tubing, pilot, aluminum Tubing, thermocouple Propane gas components Gas valve, 1/2" x 1/2", CGa-25 through CGa-6 Gas valve, 3/4" x 3/4", CGa-7 and CGa-8 Pilot assembly kit with orific
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 13a Figure 36 Boiler model number CGa-25 CGa-3 CGa-4 CGa-5 CGa-6 CGa-7 CGa-8 Note 3: 66 Dimensions Dimensional drawing — ALL DIMENSIONS IN INCHES Supply tapping Return tapping Gas connection & manifold size (inches NPT) (inches NPT) (Note 3) (inches NPT) 11/4 11/4 11/4 11/4 11/4 11/4 11/4 11/4 11/4 11/4 11/4 11/4 11/4 11/4 / / 1/2 1/2 1/2 3/4 3/4 12 12 “A” Vent location “D” Vent diameter “W” Jacket width “H” Damper height (inches) (inches)
GOLD CGa Gas-Fired Water Boiler — Boiler Manual 13b Ratings DOE Boiler model number Input (Btuh) (Note 1) DOE Heating capacity (Btuh) 0–2,000 feet altitude Input (Btuh) Output (Btuh) 2,000–4,500 feet altitude Input (Btuh) Output (Btuh) (Note 2) Net Boiler I=B=R water ratings content (Btuh) (gallons) DOE Seasonal efficiency (% A.F.U.E) SPDN SPDL PIDN Chimney and breeching size (Note 3) CGa-25 52,000 44,000 52,000 44,000 46,800 39,000 38,000 1.5 81.5 83.3 84.0 4"I.D.
GOLD CGa Gas-Fired Water Boiler — Boiler Manual Handling ceramic fiber and fiberglass materials REMOVAL OF COMBUSTION CHAMBER LINING OR BASE PANELS The combustion chamber lining or base insulation panels in this product contain ceramic fiber materials. #ERAMIC FIBERS CAN BE CONVERTED TO cristobalite in very high temperature applications.