User Guide

ManualsBrandsWeil-McLain ManualsBoilersCGI-7 - 140,000 BTU Output Cast Iron Boiler, Spark Ignition - Series 4 (Nat Gas)

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Part Number 550-142-301/0420

CGa, CGi, EG, PEG, & LGB Gas-Fired Boilers

1 Gas valve

2 Pilot burner

3 Main burner

4 Gas manifold/orices

5 Control module

7 Vent damper

9 Transformer

10 Spill switch

12 Rollout thermal fuse element

13 Low water cutoff (steam boilers)

14 Limit control(s)

15 Draft hood

16 Circulator

18 Gauge (pressure or pressure/temperature)

19 Gauge glass (steam only)

20 Water temperature/LWCO sensor

(For EG/PEG water boilers - not shown)

Boiler components

EG/PEG

LGB

1 Gas valve

2 Pilot burner

3 Main burner

4 Gas manifold/orices

5 Control module

7 Vent damper

9 Transformer

10 Spill switch

12 Rollout thermal fuse element

13 Low water cutoff (steam boilers)

14 Limit control(s)

15 Draft hood

16 Circulator

18 Gauge (pressure or pressure/temperature)

19 Gauge glass (steam only)