Operating instructions

43
Part Number 550-142-784/0812
GWA Series 2 Gas-Fired Water Boilers – Boiler Manual
Figure 21 Trim assembly
13 Replacement parts continued
Item
number
Description Manufacturer
Manufacturer’s
Part number
Part number
1
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.)
Watts M330 511-546-920WT
Watts 335 511-546-924WT
2
Combination pressure-temperature gauge, with 2½ short shank Amekai OS234JDTW003 510-218-099WT
3
Drain valve, ¾” NPT, 1-½ Shank
(Fittings shown are included with boiler.)
511-210-423WT
4
Circulator (Fittings shown are shipped loose with boiler.) Taco 007 511-405-113WT
5 Circulator gasket, universal (2 per boiler) 590-317-535WT
not
shown
Circulator hardware kit, includes:
2 anges, 4 nuts, 4 bolts, 2 pipe nipples —
1” NPT — GWA-052 through GWA-140
1¼” NPT — GWA-175 through GWA-245
381-354-525WT
381-354-526WT
6
Circulator wiring harness 591-391-976WT