Instruction manual GWV
97
is
TERMINAL BLOCK CONNECTIONS:
Earth
N
Neutral
L
Phase input of controller
L
1
Phase input of system pump
L
2
Phase input of program-controlled pump
COMPONENTS:
A
Controller
B
Flame probe
C
Hot surface igniter
D
Gas control 1
E
Gas control 2
F
Display
G
Fan
H
External ON mode switch
J
n/a
K
Alarm signal
L
n/a
M
Program-controlled pump
N
System pump
P
Double-pole isolator
Q
0/1 switch of controller
R
Temperature sensor (T1 - heat exchanger inlet)
S
Dummy
T
Temperature sensor (T3 -Tank)
U
Temperature sensor (T2 - heat exchanger outlet)
V
Selection resistor
W
Air pressure switch
X
Flow-through switch
CONTROLLER CONNECTIONS:
J2
Connection for controller power
J19
Connection for system pump and alarm signal
J20
Connection for gas controls
J21
Program-controlled pump connection
J29
n/a
J33
Fan connection
J36
Connection of display to controller
JP2
Flame probe and hot surface igniter connection
JP3
Temperature sensor T1 connection
JP4
Dummy connection
JP5
Connection for temperature sensors T2 and T3
JP6
Selection resistor and air pressure switch connection
JP8
Extra ON mode switch connection
JP12 Connection for flow-through switch
F1
Fuse
F3
Fuse
Summary of Contents for GWV - 120
Page 2: ...www aosmithinternational com your installer ...
Page 4: ...4 Instruction manual GWV gis ...
Page 8: ...Table of contents 8 Instruction manual GWV ...
Page 12: ...Introduction 12 Instruction manual GWV 1 gis ...
Page 40: ...Installation 40 Instruction manual GWV 3 is ...
Page 42: ...Conversion to a different gas category 42 Instruction manual GWV 4 is ...
Page 46: ...Filling 46 Instruction manual GWV 5 gis ...
Page 58: ...Starting and running 58 Instruction manual GWV 9 gis ...
Page 60: ...Shutting down 60 Instruction manual GWV 10 gis ...
Page 72: ...Service program 72 Instruction manual GWV 12 is ...
Page 86: ...Troubleshooting 86 Instruction manual GWV 13 gis ...
Page 88: ...Maintenance frequency 88 Instruction manual GWV 14 is ...
Page 98: ...Appendices 98 Instruction manual GWV 17 is ...
Page 100: ...Instruction manual GWV 100 ...
Page 102: ...0307 971 4 0 UK Index Instruction manual GWV ...