GOLD CGi Gas-Fired Water Boiler — Boiler Manual

11c Troubleshooting — control module lights (cont.)

CHART 7 — Insufficient heat or no heat to system (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. Is system heating?

Is thermostat set to call for heat? Remove thermostat wires at boiler and check continuity across the two wires. If circuit isn't closed, check external thermostat (zone valve, relay, etc.) wiring. Correct problems and retry.

Reconnect external thermostat wiring at boiler.

Is thermostat circuit closed (continuity across wires)?

 

 

No

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Boiler is in standby.

 

 

 

 

 

 

Are all red lights off?

 

Set thermostat to call for

 

 

 

 

 

 

 

heat and recheck

No

 

Yes

 

 

 

 

 

 

 

operation.

 

 

 

 

 

 

 

 

 

Verify Sequence of

 

 

 

 

 

 

Wait 30 seconds.

 

 

 

operation, Figure 30,

 

 

page 37.

Are all red lights off?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace control module. Retest.

If you have sufficient heat — boiler should be in normal operating sequence. (See normal sequence of operation, Figure 30, page 37.)

If you have less than sufficient heat —

Is vent piping free of blockage?

 

No

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Correct conditions and

 

Check heat loss

 

recheck operation.

 

 

calculation versus boiler

See Figure 30, page 37

 

 

size.

 

for normal sequence of

 

Clock gas input.

 

operation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Wait for boiler water to cool to temperature 20 to 30 °F lower than temperature set on limit switch.

Are limit switch contacts closed?

 

No

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Boiler water temperature exceeded

 

 

 

 

setting on limit switch with thermostat

 

 

 

 

Replace

 

calling for heat. Boiler is OK. (See normal

 

sequence of operation, Figure 30, p. 37.)

 

limit switch.

 

 

 

• Also check setting on limit switch (should

Retest.

 

 

be above 140°F.).

 

 

 

 

 

 

 

 

 

 

 

 

Is boiler System circulator operating?

No

Yes

 

 

Remove CIRCULATOR harness plug from CIRCULATOR plug receptacle (Figure 38,

Item 7, page 50). Check with voltmeter across pins of control module receptacle.

Does voltmeter show 120 VAC across pins?

 

 

 

 

No

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace control

 

Repair/replace

 

 

 

 

 

 

module.

 

 

 

 

 

 

circulator. Retest.

 

 

 

 

 

Retest.

 

 

 

Repair/replace

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

wiring. Retest.

 

 

 

 

Wait 5 minutes.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is FLAME light on?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

No

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is LIMIT light on?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check limit switch

 

 

 

 

Replace control module.

 

 

contacts with continuity

 

 

 

 

Retest.

 

 

checker.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Are limit switch contacts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

closed?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check rollout switch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

continuity — is switch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

closed?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace rollout switch.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check any other

If rollout thermal fuse element has

 

 

 

 

 

 

limit controls wired

opened, determine cause and

 

 

 

 

 

 

 

into the limit

correct condition. Failure to do so

 

 

 

 

circuit. If all are

will cause severe personal injury,

 

 

 

 

OK, then replace

death or substantial property

 

 

 

 

 

 

 

control module.

damage.

 

 

 

 

 

 

 

 

 

 

 

Retest.

Part Number 550-110-710/0107

57

 

Page 57
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Weil-McLain Series 2 manual Verify Sequence

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.