1
2
3
4
5
6
7
8
8
9
9
9
10
11
12
13
14
15
16
17
18
19
20
21
071044
To boiler retur
n tapping
To boiler supply tapping
To boiler
relief valve
tapping
To drain
System supply connection
H
AB
A
B
B
B
A
A
AB
AB
Actuator
Connect
to system
return piping
3-way valve
connections
Connect
to circulator
as shown
Connect
to supply
piping as
shown
22
23
H
H
Replacement parts — trim
13
Figure 38 Trim assembly
64
Part Number
550-110-290/0219
CGt
GAS-FIRED WATER BOILER — Series 2 —
Boiler Manual
Item
Number
Description
Manufacturer
Manufacturer’s
part number
Weil-McLain
part number
1
Drain valve, ¾” NPT/Bibb
Conbraco
Hammond Vlv.
Matco-Norca
Watts
31-606-01
710
205F04
BD-2C
511-210-423
511-246-392
511-246-392
511-246-392
2
Tee, 1¼” x ¾” x 1¼”
561-541-245
3
Nipple, 1¼” x 2¾” NPT
561-326-601
4
Nipple, 1¼” x 2” NPT
561-326-598
5
Circulator, pre-piped
(Circulator hardware kit includes 2 flanges,
2 nuts, and 2 screws)
Taco
007e ECM
007
511-405-153
511-405-113
6
Circulator gasket, universal (2 per boiler)
Weil-McLain
590-317-535
7
Circulator wiring harness kit
(Molex for control end shipped loose)
Weil-McLain
591-391-904
8
Adapter, copper/NPT, 1" x 1"
562-302-533
9
Nipple, copper, 1” x cut to fit
560-742-939
10
3-Way valve actuator
3-Way valve body
Honeywell
Honeywell
635-100-023
635-100-022
11
Main wire harness controls to module
(see wiring diagram for connections)
591-391-950
12
Elbow, copper, 1"
561-115-303
13
Tee, 1" x 1" x 1" NPT
561-541-212
14
Bushing, 1” x ½” NPT
560-807-350
15
Combination pressure-temperature gauge, 3⅛”
diameter, short shank
380-000-000
16
Nipple, 1" closing
561-326-500
17
Tee, 1¼" x 1¼" x 1" NPT
Weil-McLain
561-541-248
18
Nipple, 1¼" x 6"
561-326-625
19
Pressure relief valve, ASME, 30 PSIG, ¾” male
inlet
Pressure relief valve, ASME, 30 PSIG, ¾” female
inlet
(Fittings shown are factory-installed on boiler.)
Conbraco
Watts
Conbraco
Watts
10-407-10
M330
10-408-05
335
511-546-950
511-546-924
20
Elbow, ¾" NPT, pre-piped
561-115-295
21
Nipple, ¾", pre-piped
561-326-395
22
Nipple, 1" x close NPT
561-326-500
23
Tee, 1” x 1” x ½” NPT
561-541-216
not
shown
Thermostatic Mixing Valve 3/4
Kit Service Valve 3 way Cartridge Replacement
Honeywell
AM 101 C-US-1
511-210-458
511-246-398