63
Page
Components Diagram
Owner's Guide
711
713
103
709
402
708
701
714
721
402
407
408
061
716
707
for
Indoor model
for
Outdoor model
140H
Computer board assembly
9
8
7
6
5
4
3
2
1
10
OFF
Remote controller
Flow
adjust
valve
R
BK
R W
BK
Flow
sensor
Ground
G
O
W
Y
BL
O
R
FM
PCB
W
120 VAC
G
Ground
SW
Ground
W
BK
G
W
R
BK
BK
BK
BK
Outlet thermistor
Inlet thermistor
Surge
box
BK
W
BK
DIP switches
Y
Y
Flame rod
BK
W
Thermostat
Heater
Heaters
Indoor only
Gas
Valve
W
BK
W
BK
controller
Indoor only
W
Y
Y
Y
(for the secondary
heat exchanger)
(for the heat exchanger
and water pipes)
(for the drain hose)
(for the water pipes)
(for the water inlet)
(for the water outlet)
Built-in
Green LED
O
R
G
LB
BL
SV3
SV2
SV1
MV
O.H.C.F
BL
Hi-
limit
BL
BL
BL
BL
BL
73
53
9
3
708
IG
Igniter rod
P
P
713
713
713
709
704
725
707
707
714
Hi-limit switch
for exhaust
Exhaust
thermistor
W
W
W
W
W
W
Indoor only
G
G
G
Drain plug
detector
Outdoor only
G
G
G
Drain plug
detector
G
721
721
140H
Wiring diagram
140H
Surge box assembly
701
713
703
121
053
706
726
726
Summary of Contents for 140H
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