Weil-McLain Series 2 manual Chart 2 Tstat Circ & Power lights flashing

Page 52

GOLD CGi Gas-Fired Water Boiler — Boiler Manual

11c Troubleshooting — control module lights (cont.)

CHART 2 — 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.

•Disconnect the two external wires connected to the boiler thermostat leads (two black low voltage leads in J-box).

•Connect a voltmeter across these two incoming wires. Close each thermostat, zone valve and relay in the external circuit one at a time and check the voltmeter reading across the wires.

•There should NEVER be a voltage reading.

•If a voltage does occur under any condition, check and correct the external wiring. (This is a common problem when using 3-wire zone valves.)

•Once the external thermostat circuit wiring is checked and corrected if necessary, reconnect the external thermostat circuit wires to the boiler thermostat wires and allow the boiler to cycle.

Did you find a voltage across the two external thermostat circuit wires?

Yes

No

•Leave external boiler thermostat connection wires disconnected from boiler.

•Troubleshoot the external thermostat circuit until you find the source of the stray voltage. (Pay close attention to the wiring connections to 3-wire zone valves.)

•Correct the problem and repeat the voltmeter test above, verifying there is no longer a voltage reading under any condition in the external thermostat circuit.

•An isolating relay may be required.

•If no voltage is found under any condition of the external thermostat circuit, connect the two boiler thermostat connection leads together (or jumper the boiler aquastat T-T terminals).

• Turn off power to the boiler for 1 minute.

• Turn on power and allow boiler to cycle.

Do the TSTAT and POWER lights still flash?

No

 

Yes

 

 

 

 

•Boiler should now operate per the normal sequence of operation shown in Figure 30, page 37.

•Replace control module.

•Retest.

52

Part Number 550-110-710/0107

 

Page 51 Page 53
Image 52
Page 51 Page 53
Contents Gold CGi How it works Gold CGi Gas-Fired Induced-Draft Water Boiler Contents Please read before proceeding Installations must follow these codes 1a Prepare boiler location codes & checklistBefore locating the boiler, check the following 1b Prepare boiler location clearances 1c Prepare boiler location vent system When removing boiler from an existing common vent systemChimney or vent require- ments 1d Prepare boiler location air contamination Products to avoid1e Prepare boiler location air openings Air openings must be providedAir opening options Two openings Air supply from inside the buildingExhaust fans and air movers Motorized air dampersSingle air opening option Exception for large spaces2a Prepare boiler placement & setup Orifice replacement procedurePlace boiler/crate near position Inspect orifices and burners2b Prepare boiler pressure test Hydrostatic pressure testDrain and remove fittings Prepare boiler for test3a Venting general information Venting chimney draft ventingCGi venting methods Chimney draft or Direct exhaust Chimney draft venting3c Venting Direct exhaust components Obtain vent system components3d Venting direct exhaust vent starter 3e Venting direct exhaust termination Vent termination minimum clearances3f Venting direct exhaust installation Direct exhaust vertical ventingUsing any termination other than one of those shown 4a Water piping general information Diaphragm-type or bladder- type expansion tank Figure 4b Water piping single-zone systemClosed-type expansion tank 4c Water piping multiple zones Piping multiple zonesZoning with circulators 4d Piping low temperature systems Temperature gaugesValve adjustment Primary/secondary preferred bypass piping methodPrimary/secondary piping Valve adjustment BOILER-bypass piping methodBoiler-bypass piping Zoning with SYSTEM-bypass piping method 4e Water piping refrigeration system Prevent chilled water from entering boilerConnecting gas supply piping to boiler Gas pipingNatural Gas Propane GasField wiring Electrical installation must comply withWiring connections ThermostatFreeze protection when used 7a Start-up preparationCheck for gas leaks Determine if water treatment is neededInspect system water piping Fill the system with waterInspect base insulation Start the boiler 7b Start-up operate boilerCheck system and boiler 7c Start-up if boiler doesn’t start Check burner flamesCheck for Pilot burner flame FigureCheck-out procedure checklist Installation and service certificate9a Operation sequence 9b Operation wiring diagrams Schematic wiring diagramLadder wiring diagram 9c Operating instructions CGi-25 to CGi-6 9c Operating instructions CGi-25 to CGi-6 9c Operating instructions CGi-25 to CGi-8 10a Service and maintenance schedule Verify Proper Operation After Servicing10b Service and maintenance annual start-up 10b Service & maintenance annual start-up Burners and baseCondensate drain system Inducer motorGas piping Cold fill and operating pressuresAir vents and air elimination Limit controls and cutoffsReview with owner Boiler relief valve11a Troubleshooting procedure 11b Troubleshooting componentsBefore troubleshooting Air pressure switchControl indicator lights Troubleshooting the control moduleControl indicator lights Lockout modes Control moduleControl module connections 11c Troubleshooting control module lights Chart 1- Troubleshooting Power light statusChart 2 Tstat Circ & Power lights flashing Chart 3 Press Switch & Power lights flashing Chart 4 Flame & Power lights flashing Does blower motor operate? Item 8 , Verify Sequence 12a Replacement parts Section assembly Base Jacket Trim Controls12b Replacement parts section assembly Section assembly12c Replacement parts base Base assemblyDescription Weil-McLain Part number 12d Replacement parts jacket Jacket assemblyBoiler 12e Replacement parts trim Fittings shown are included with boiler12f Replacement parts controls Propane gas components13a Dimensions Dimensional drawing13b Ratings DOEHandling ceramic fiber and fiberglass materials Removal of Combustion Chamber Lining or Base Panels
Related manuals
Manual 12 pages 22.83 Kb

Series 2 specifications

The Weil-McLain Series 2 is a highly regarded boiler system known for its robustness, efficiency, and ease of installation. Designed primarily for residential and light commercial applications, the Series 2 boasts a variety of features that cater to diverse heating needs.

One of the standout characteristics of the Series 2 is its cast iron construction, which provides durability and longevity. Cast iron is well-suited for heat retention, allowing the boiler to operate more efficiently and deliver consistent warmth. The Series 2 is available in multi-fuel options, accommodating both natural gas and propane, making it versatile for various installations.

Efficiency is a key feature of the Weil-McLain Series 2, with annual fuel utilization efficiency (AFUE) ratings that meet or exceed industry standards. This ensures that homeowners can enjoy not only a comfortable living environment but also reduced energy bills. The Series 2 is designed to provide optimal performance, minimizing fuel consumption while maximizing heat output.

Another innovative aspect of the Series 2 is its user-friendly control system. Equipped with advanced controls, the boiler allows for precise temperature management and can easily be integrated with existing heating systems. This adaptability is crucial for ensuring that the boiler matches the specific heating demands of any space, increasing overall comfort levels.

Installation is straightforward, thanks to the boiler's thoughtful design. The Series 2 features a compact footprint, allowing for flexible placement in various settings. Additionally, Weil-McLain provides comprehensive documentation and customer support, making it easier for technicians to install and maintain the system.

The Series 2 also includes features aimed at ease of maintenance. Its clean-out ports facilitate quick access for servicing, ensuring that the boiler remains in peak operating condition throughout its lifespan. Weil-McLain’s commitment to quality means users can expect reliable performance year after year.

Overall, the Weil-McLain Series 2 stands out as an excellent choice for those seeking a dependable, efficient, and straightforward heating solution. Its combination of durable construction, high efficiency, and user-centric design makes it a leading option in the boiler market, appealing to both homeowners and professionals alike. Whether for a new installation or a replacement, the Series 2 is poised to deliver exceptional heating performance.
Top Page Image Contents