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
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Item Description
Part Number
1 Ultra U-control module 383-500-627
2 Transformer, 120v/24v 383-500-628
3 Display board assembly (includes plastic and display screen) 383-500-629
4 On/off power switch 383-500-205
5 Pressure/temperature gauge assembly (Includes temperature and pressure sensor) 383-500-630
6 Flue temperature sensor replacement kit 383-500-600
7 System temperature sensors (2 required) 383-500-601
8 Outdoor temperature sensor 510-312-218
9 Display to U-control wire harness (not shown) 383-500-633
10 Upper line voltage wire harness (male) (not shown) 383-500-634
11 Lower line voltage wire harness (female) (not shown) 383-500-635
12 Upper low voltage wire harness (male) (not shown) 383-500-636
13 Lower low voltage wire harness (female) (not shown) 383-500-637
14 120 volt, 3-wire receptacle (not shown) 383-500-638
15 Ultra U-control module fuses (not shown) F1 - 3-amp, fast-blow ATO (5 fuses)
F2 - 12-amp, slow-blow AG (5 fuses)
383-500-603
383-500-604
16 Jumper for low voltage terminal blocks, (5 jumpers) (not shown) 383-500-641
17 Ultra U-Control terminal block kit, (includes 1 high voltage terminal block, 6 low voltage terminal
blocks, and U-control screwdriver) (not shown)
383-500-642
18 24-V LWCO kit with quick connect harness (not shown) 511-100-005
Replacement parts (continued)
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