Weil-McLain Standing Pilot Cast Iron Gas Boiler CGA25SPDN User Manual

GOLD CGa Gas-Fired Water Boiler — Boiler Manual

Part Number 550-101-009/0107

Contents

Hazard deﬁnitions

The following deﬁned terms are used throughout this manual to bring attention to the presence of hazards of
various risk levels or to important information concerning the life of the product.

Indicates presence of hazards that

WILL

personal injury, death or substantial

property damage.

Indicates presence of hazards that

CAN

personal injury, death or substantial

property damage.

Indicates presence of hazards that

WILL

personal injury or property dam-

age.

Indicates special instructions on installation, operation or maintenance that are important but
not related to personal injury or property damage.

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 ......................................................... 26

5 Field wiring ....................................................... 27

6 Start-up ........................................................ 28-32

7 Check-out pr ocedure ......................................... 33

8 Operation – standing pilot boilers ................. 34-36

9 Operation – spark-ignited pilot boilers .......... 37-43

10 Service and maintenance ............................. 44-49

11 Troubleshooting:

Standing pilot boilers ............................. 49-50, 51

Spark-ignited pilot boilers .................49-50, 51-59

12 Replacement parts ....................................... 60-65

13 Dimensions and ratings ................................ 66-67