andrews FASTflo WH42 Installation Manual, Operation And Maintenance Manual page 27

Wiring Diagram ( WH42, LWH42, WH56, LWH56)
AIRFLOW CHANGE
2 2
O
-OVER CONNECTOR O 1 1 O
1
(VACANT CONNECTOR)
2
3
4
5
6
R
7 R
INLET WATER
3
W W
2
THERMISTOR
W 1 W
HEAT EXCHANGER W
W 4 W
THERMISTOR 3
2
W 1 W
OUTLET WATER
W
W 2 W
THERMISTOR
1
W W
OPERATING LED
BK 2 BK
1
W W
8
BK BK
7
V V
MAIN WATER
SM (VCC) W 6 W
5
FLOW CONTROL G G
4
O O
VALVE
(VCC) R 3 R
(Fully open) 2
Y Y
LS
(GND) BL 1 BL
8
BK BK
7 V
V
SM (VCC) W 6 W
BYPASS WATER
5
G G
FLOW CONTROL O 4 O
(VCC) 3
R R
VALVE
(Fully open) 2
Y Y
LS
(GND) BL 1 BL
BL
1 R
BL
THERMAL FUSE
BL 1 BL
REMOTE CONTROLLER
BL 2 BL
BL 1 BL
RC TERMINAL
1 R
SYSTEM CONTROLLER B5
2 BK
(OPTIONAL)
FLAME ROD
W (Vs) W W
6
5
BL(GND) BL BL
4
FAN MOTOR FM
R (Vcc) R 3 R
Y (FG) Y 2 Y
O (Vsp)
O 1 O
IGNITER
W
ELECTRODE IG
BK
HIGH-LIMIT SWITCH
W BK
2
W 1 W
1 BR
(VACANT CONNECTOR)
2
BR
BR
1 1 GY
(UN-USED)
2 2 BR
CURRENT LEAKAGE
SAFETY DEVICE
(GFCI)
<AC230V>
BR
BR BR
1
BL
BL 2
W
BL
Y/G Y/G Y/G BL
EARTH EARTH EARTH
BL
FREEZE PROTECTION
THERMOSTAT
W
FREEZE PROTECTION BL
THERMOSTAT
BL
BR
BR
W 1
R
(UN-USED)
2
3
BL
(VACANT CONNECTOR) 2 R
1 BL
<CN102>
<CN89>
1 2 3 4
3 BL
2
1 BL
<CN38>
2 1
4 3
6 5
8 7
10 9
12 11
14 13
16 15
18 17
20 19
22 21
24 23 R
26 25 R
28 27
30 29
BL
32 31
1
<CN78>
1 3 5 <CN1>
2 4 6
<CN160>
BL R
<CN102>
3 2
4 3 2 1
BK R
G G
EARTH
TRANSFORMER
(VACANT CONNECTOR)
BR BR
1 3
GY
2 GY BL 2 BL
BL BL
3 W 1 W
BL/W W W W W W W W W W
1 2 2 1 2 1 2 1 2 1
W W W W W W W W W W
FREEZE PREVENTION HEATER
Page 23
BL
15
<CN63>
14
5 6 5 6 8 9 13
1 2 3 4 7
12
11
MAIN CIRCUIT
10
BOARD
9
8
7
6
5
4
Manifold Gas Pressure
3
2 Increase Button
1 R
Manifold Gas Pressure
<CN75>
Decrease Button
Minimum Manifold Pressure Set Button
Maximum Manifold Pressure Set Button
(For Quick Connect Multi System Only)
BL BL 6
6 6
5
BL BL
5 5
G G 4 G(BK)
4 4
W W 3 W(R)
3 3
2
BK BK BK(G)
2 2
R R 1 R(W)
1 1
<CN184>
BL 8
7
R
O 6
BL 5
BR 4
GY 3
1 2 3 4 <CN10>
W 2
5 6 7 8
BK 1
O Y W
<CN27>
5 4 3 2 1 9 7 6 5 4 3 2 1
1 7
<CN
<CN104>
6
5
89A>
4
3
2
1
BK
W
2 1
<CN101>
LIVE
<CN92>
1
POWER CIRCUIT
2
BOARD
3
DC140V
W W
6
5
BL BL
4
R 3 R
Y 2 Y
O 1 O
DC15V(1)
BK BK W
15V POWER CIRCUIT
2 1
GND
COLOR CODING
W : White
R : Red
BK : Black
V : Violet
O : Orange
BL : Blue
GY : Gray
G : Green
BR : Brown
Y : Yellow
05.9.26, 7:41 PM
1
R R
2
BURNER THERMISTOR
W 3 W
Y 3 Y (Pulse)
MAIN WATER
2
R R (VCC)
QS
1 (GND)
BL BL FLOW SENSOR
R
3 (Pulse)
Y Y
BYPASS WATER FLOW
R 2 R (VCC)
QS
BL 1 BL (GND) SENSOR
BL
Other Unit in Quick Connect Multi System
MAIN CIRCUIT
BOARD
BL BL
6 6
BL BL
5 5
G G
4 4
184
W W
3 3
BK BK
2 2
R R
1 1
<CN184>
Quick Connect Cord(Optional)
BL BL 6
BL BL 5
(G)BK 4
(W)R 3
2
(BK)G
(R)W 1
BL
BL
DU
GAS VALVE UNIT
R
R
O
BL
BR
W
SV
GY 10
0
W W
BK
BK
SV
11
Q1 GAS MANIFOLD
BK
GY
SV
12
Q2
GY
O
SV
13
Q3
O
BR
SV
14
Q4
BR
NEUTRAL
VARISTOR
VARISTOR ARRESTER
CURRENT LEAKAGE SAFETY DEVICE
FREEZE PROTECTION FREEZE PREVENTION
THERMOSTAT HEATER
AC230V
PRIMARY
SECONDARY
10A(FUSE)
AC100V
RELAY 9 IGNITER
IG
RELAY 3 SOLENOID VALVE 0
SV0
HIGH LIMIT
RELAY 1 SOLENOID VALVE Q1
SV1
SWITCH
RELAY 10
RELAY 4 SOLENOID VALVE Q2
DC90V SV2 DC90V
RELAY 5 SOLENOID VALVE Q3
SV3
RELAY 2 SOLENOID VALVE Q4
SV4
DC140V
POWER
FAN FAN MOTOR
CONTROLLER
A
B
DC15V(2)
PRIMARY
FAN CONTROL FAN
OUTPUT PULSE
SECONDARY A
CONTROL
CIRCUIT
FAN ROTATION
SPEED INPUT
B
MAIN WATER FLOW SENSOR
BYPASS WATER FLOW SENSOR
Sub-CPU
SUB
CONTROL
MAIN WATER FLOW CONTROL VALVE
UNIT
BYPASS WATER FLOW CONTROL VALVE
CPU C D
CENTRAL
PROCESSING OUTLET WATER THERMISTOR
THERMAL FUSE RELAY 1
UNIT
INLET WATER THERMISTOR
RELAY 2
HEAT EXCHANGER
THERMISTOR
RELAY
FREEZE PROTECTION
RELAY 5
DRIVING
THERMISTOR
CIRCUIT
RELAY 7
BURNER THERMISTOR
RELAY 9
RELAY 10
DU D
GAS PROPORTION VALVE
POWER CONTROL CIRCUIT
FLAME DETECTING CIRCUIT
EARTH
FR FLAME ROD C
5V POWER CIRCUIT
EARTH
GND
23