Instruction manual

Part number 550-142-056/0411
GWC gas-fired water boiler — Boiler Manual
94
Figure 99 Trim assembly
Item
number
Description Williamson-
Thermoflo
part number
1 System circulator, Taco 007 511-405-113WT
2 Bypass circulator, Taco 007 511-405-113WT
3 Circulator gasket, Taco 110-339 590-317-543WT
4
Manifold, casting/circulator kit, includes water manifold, circulator gasket (Taco
110-339) (2), square cut seal (manifold to casting)
382-200-720WT
5
Return manifold, recuperator/circulator kit, includes water manifold, circulator
gasket (Taco 110-339) (1), diamond gasket
382-200-721WT
6 Square cut seal gaskets, casting, 2.31" 572-800-011WT
7 Diamond flange gasket 590-317-535WT
8
Supply manifold kit, includes water manifold, circulator gasket (Taco 110-339) (1),
square cut seal (manifold to casting)
382-200-722WT
9 Coin-operated air vent, 1/8” NPT 570-148-565WT
10 Wiring harness, circulators to IBC 591-391-824WT
11 Return water temperature sensor and clip 511-330-089WT
12 Tee, 1” x 1” x ¾” Obtain locally
13 Bushing ¾” x ¼” Obtain locally
14 Temperature and Pressure Gauge, 1/4" NPT 380-000-000
15 30 PSIG Relief Valve 511-546-920WT
16 Nipple, NPT — ¾” x 3” Obtain locally
17 Block temperature limit switch 382-200-375WT
18 Limit control without well, 200 °F maximum setpoint 382-200-719WT
19 Limit control well, ½” NPT 592-300-017WT
20 Drain valve, ¾” NPT 511-546-392WT
Replacement parts (continued)