CSD-1 control system — Natural gas
Part Number 550-110-677/0299
33
Table 5
Water 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
Boiler models
Vendor
Vendor part number
Weil-McLain
part number
1
Main burner
EGH-105 – 125 Weil-McLain
— See EGH Manual —
2
Main burner with pilot bracket
EGH-105 – 125 Weil-McLain
— See EGH Manual —
3
Pilot burner bracket (not shown)
EGH-105 – 125 Weil-McLain
— See EGH Manual —
4
Pilot burner (not shown)
EGH-105 – 125
Beckett Gas
E48A-1
511-330-166
Johnson Controls
Q90GE-1
5
Main gas valve
EGH-105 – 125 Robertshaw
7000DERHC-S7C
511-044-287
6
Manual gas valve, 1" NPT
EGH-105 – 125 Watts
FBV3-06
511-246-290
7
Leak test valve
EGH-105 – 125 Key Gas
511-246-339
8
Pilot gas valve
EGH-105 – 125
Honeywell
V8046C-1014
511-044-039
Johnson Controls
H91ABG
8a
Pilot gas pressure regulator
EGH-105 – 125 Maxitrol
RV20VL
510-933-195
9
Pilot shutoff valve
EGH-105 – 125 Conbraco
53-300-01
511-246-345
10
Pilot tubing, alum. 1/8" O.D. x 34" long
EGH-105 – 125 Available at local supply house
11
Ignition control
EGH-105 – 125 United Technologies
1003-615
511-330-086
12
Impulse relay
EGH-105 – 125 Potter-Brumfield
S89R-11ABD1-24
510-350-226
13
Push-button switch
EGH-105 – 125
Honeywell
AML21CBA2AA
511-624-580
Eaton Controls
221K11810
14
Lens cover
EGH-105 – 125
Honeywell
AML51-C10R
511-624-581
Eaton Controls
220PM02A
15
Light bulb
EGH-105 – 125 TI-¾ (available at local supply house)
16
Wiring harness, water boilers
EGH-105 – 125 Weil-McLain
591-391-886
17
Vent damper assembly — optional
(not for use in Canada)
EGH-105
Effikal
RVGP-KS-10BF
381-800-446
Johnson Controls
Q35GP-2 (note 1)
EGH-115 – 125
Effikal
RVGP-KS-12BF
381-800-447
Johnson Controls
Q35GR-2 (note 1)
18
Vent damper actuator
EGH-105 – 125
Effikal only
RVGP
510-512-337
Johnson only
M35BE-1C
510-312-255
19
Vent damper harness
EGH-105 – 125 Weil-McLain
10C321
591-391-795
20
Limit control, automatic reset
EGH-105 – 125
Honeywell
L4080B-1311
510-312-209
White-Rodgers
11B83-16
21
Limit control, manual reset
EGH-105 – 125 Honeywell
L4006E-1000
510-312-041
22
Probe LWCO, manual reset
EGH-105 – 125 McDonnell & Miller
PS852M-24
511-114-530
23
Pressure/temperature gauge
EGH-105 – 125
Ametek
19998
510-218-097
ENFM-USA
4104-2-1/2-1/4CBM
24
Transformer/relay
EGH-105 – 125 Honeywell
R8285D-5001
510-312-169
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.
Refer to boiler manual for parts not listed above.