Instruction manual GWV 97
is
TERMINAL BLOCK CONNECTIONS:
Earth
N Neutral
L Phase input of controller
L1Phase input of system pump
L2Phase 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
GFan
H External ON mode switch
Jn/a
K Alarm signal
Ln/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