Installation Guide

Part number 550-100-066/0608
g a s -f i r e d w at e r b o i l e r — Boiler Manual
100
Heat exchanger and piping — Ultra-310
Item Description
Boiler
Models
Part
Number
1 Heat exchanger replacement kit - Heat exchanger, cover plate, burner,
electrode, water sensors, compression fittings, condensate fitting, gaskets,
and hardware
Ultra-310 383-500-623
2 Cover plate replacement kit - Cover plate, cover plate gasket, burner gasket,
and hardware
Ultra-310 383-500-395
3 Cover plate insulation Ultra-310 383-500-250
4 Cover plate gasket Ultra-310 383-500-255
5 Cover plate studs, M6, 1 pitch All 560-340-598
6 Cover plate nuts, M6, 1 pitch All 561-928-449
8 Supply water pipe assembly - Pipe, temperature well, check valve, cap
(assembled) & compression fitting
Ultra-310 383-500-380
10 1/2” NPT well for temperature gauge All 383-500-270
11 Pressure/temperature gauge check valve All 383-500-275
13 Return water pipe assembly - Pipe, drain valve, cap (assembled) &
compression fitting
Ultra-310 383-500-385
14 Supply/Return water piping square cut EPDM gasket (Ultra-310 only) Ultra-310 562-248-743
15 Fitting, double nipple for Ultra-310 supply/return Ultra-310 561-326-828
16 Boiler drain valve, 3/4” NPT All 511-246-392
17 Blower assembly kit - Blower, gasket, and hardware Ultra-310 383-500-360
18 Gas pipe Ultra-310 560-907-679
19 Flexible gas line section and shut-off valve Ultra-310 560-900-016
20 Gas pipe lower clamp and hardware Ultra-310 383-500-625
21 Gas valve/venturi kit - Gas valve, venturi, adapter block, O-ring and hardware
(assembled) (For LP boilers, make sure to reinstall the existing propane orifice)
Ultra-310 383-500-390
22 Gasket cork, for in between gas valve venturi & burner inlet All 590-317-310
23 Air silencer kit - Air silencer and gasket Ultra-310 383-500-355
24 Condensate trap kit - Condensate trap, hose clamps, pvc fittings, and gasket Ultra-310 383-500-626
25 Ignition electrode kit - Ignition electrode, suppressor, gasket, and hardware All 383-500-045
26 Ignition cable kit (not shown) - Ignition cable, suppressor, and wire tie All 383-500-619
27 Inspection glass kit - Bracket, glass, gasket and hardware All 383-500-020
28 Burner replacement kit - Burner, gaskets and hardware Ultra-310 383-500-407
29 Return/supply sensor kit - (1) sensor All 383-500-602
Replacement parts (continued)
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