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S
4
®
ERIES
GAS
Replacement parts
Controls
Description
Ultra U-Control module
Transformer, 120V/24V
Display board assembly (includes plastic and display screen) 383-500-756
On/off power switch
Flue temperature sensor replacement kit
System temperature sensors (2 required)
Outdoor temperature sensor
8
Display to U-Control wire harness (not shown)
Line voltage wire harness (male) (not shown)
Low voltage wire harness (male) (not shown)
120 volt, 3-wire receptacle (not shown)
Ultra U-Control module fuses (not shown)
F1 - 3-amp, fast-blow ATO (5 fuses)
F2 - 12-amp, fast-blow AG (5 fuses)
Jumper for low voltage terminal blocks, (5 jumpers)
(not shown)
Ultra U-Control terminal block kit, (includes 1 high voltage
terminal block, 6 low voltage terminal blocks, and U-Control
screwdriver) (not shown)
24V LWCO kit with quick connect harness (not shown)
Part number 550-100-400/0717
-
FIRED WATER BOILER
(continued)
Part
Number
383-500-658
383-500-628
383-500-205
383-500-600
383-500-601
510-312-218
383-500-633
383-500-639
383-500-640
383-500-638
383-500-603
383-500-604
383-500-641
383-500-642
511-100-005
— Boiler Manual
131
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