A.O. Smith T-KJr2-OS User Manual

110 Indoor / 110 Outdoor Service Manual
Ver. 1.01
13
CONFIDENTIAL
Check-
point
Part and Description Color of wires Normal range
H1 Gas proportional valve White - red
1 to 15 VDC (during operation)
and
20 to 40 Ω
H2 Flow sensor
Red - Black 4 to 5.5 VDC
White - Black
1 to 4 VDC (pulse)
1,080 pulse / min
(more than 18 Hz)
I
Air-fuel ratio rod
Yellow - AFR rod
(Between AFR rod and
the computer board)
More than 0.5 μA
(during operation)
Flame rod
Orange - Flame rod
(Between flame rod and
the computer board)
More than 1 μA
(during operation)
J Flow adjustment valve Red - Black 7 to 16 VDC and 0.09 to 0.2 kΩ

A.O. Smith T-KJr2-OS Specifications

General

Brand	A.O. Smith
Model	T-KJr2-OS
Category	Water Heater
Language	English