Weil-McLain EGH-105 Control Supplement page 35

Table 6 Steam boiler replacement parts
Before replacing any parts on the boiler — Turn off power to boiler and shut off gas supply. Failure to comply could
result in severe personal injury, death or substantial property damage.
Item Part description
1 Main burner
2 Main burner with pilot bracket
3 Pilot burner bracket (not shown)
4 Pilot burner (not shown)
5 Main gas valve
6 Manual gas valve, 1" NPT
7 Leak test valve
8 Pilot gas valve
8a Pilot gas pressure regulator
9 Pilot shutoff valve
10 Pilot tubing, alum. 1/8" O.D. x 34" long
11 Ignition control
12 Impulse relay
13 Push-button switch
14 Lens cover
15 Light bulb
Wiring harness, pumped return steam
16
Wiring harness, gravity return steam
Vent damper assembly — optional
17
(not for use in Canada)
18 Vent damper actuator
19 Vent damper harness
20 Limit control, automatic reset
21 Limit control, manual reset
22 Probe LWCO, manual reset
23a Float LWCO, automatic reset
23b Float LWCO/pump control, auto reset
24 Pressure gauge
25 Transformer/relay
Note 1 — Johnson damper assembly consists of M35BC actuator and Y15 vent pipe.
Replacement parts must be purchased through a local Weil-McLain distributor. When ordering, specify boiler model and series and
include description and number of replacement part. Results from using modified or other manufactured parts will not be covered
by warranty and may damage boiler or impair operation.
Part Number 550-110-677/0299
CSD-1 control system — Natural gas
Boiler models
EGH-105 – 125 Weil-McLain
EGH-105 – 125 Weil-McLain
EGH-105 – 125 Weil-McLain
EGH-105 – 125
EGH-105 – 125 Robertshaw
EGH-105 – 125 Watts
EGH-105 – 125 Key Gas
EGH-105 – 125
EGH-105 – 125 Maxitrol
EGH-105 – 125 Conbraco
EGH-105 – 125 Available at local supply house
EGH-105 – 125 United Technologies
EGH-105 – 125 Potter-Brumfield
EGH-105 – 125
EGH-105 – 125
EGH-105 – 125 TI-¾ (available at local supply house)
EGH-105 – 125 Weil-McLain
EGH-105 – 125 Weil-McLain
EGH-105
EGH-115 – 125
EGH-105 – 125
EGH-105 – 125 Weil-McLain
EGH-105 – 125
EGH-105 – 125 Honeywell
EGH-105 – 125 McDonnell & Miller
EGH-105 – 125 McDonnell & Miller
EGH-105 – 125 McDonnell & Miller
EGH-105 – 125
EGH-105 – 125 Honeywell
Refer to boiler manual for parts not listed above.
Vendor Vendor part number
Beckett Gas
Johnson Controls
7000DERHC-S7C
Honeywell
Johnson Controls
S89R-11ABD1-24
Honeywell
Eaton Controls
Honeywell
Eaton Controls
Effikal
Johnson Controls Q35GP-2 (note 1)
Effikal
Johnson Controls Q35GR-2 (note 1)
Effikal only
Johnson only
Honeywell
White-Rodgers
Ametek
Winter
Weil-McLain
part number
— See EGH Manual —
— See EGH Manual —
— See EGH Manual —
E48A-1
511-330-166
Q90GE-1
511-044-287
FBV3-06 511-246-290
511-246-339
V8046C-1014
511-044-039
H91ABG
RV20VL 510-933-195
53-300-01 511-246-345
1003-615 511-330-086
510-350-226
AML21CBA2AA
511-624-580
221K11810
AML51-C10R
511-624-581
220PM02A
591-391-888
591-391-887
RVGP-KS-10BF
381-800-446
RVGP-KS-12BF
381-800-447
RVGP 510-512-337
M35BE-1C 510-312-255
10C321 591-391-795
PA-404-A 510-312-135
P47EA-3 510-311-023
L404C-1147 510-312-060
PS852M-24 511-114-530
67W-1 511-114-494
42-A 511-114-531
P505K
510-218-045
E1437
R8285D-5001 510-312-169
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