Calorex VARIHEAT VH3 AA600 Manuel D'installation page 22

ELECTRICAL CONTROL CIRCUIT 'AA+LPHW' VERSION
See pages AW circuit for power circuits
PHASE ROTATION
FOR AW1200 & 1500
L3
SEE BELOW
L2
L1
9
R12
6
7
16
MAINS
RCU
LAMP
15
57 TB:L
58 TB:N
TO REMOTE
DAMPER IF
FITTED.
N
NOTES
'R' LETTER RELAY'S ARE 12V
'RE' LETTER RELAY'S ARE 230V
'P' LETTERS ARE CONNECTOR BLOCK PIN NUMBERS
15 = DIN RAIL MOUNTED TERMINAL BLOCK NUMBERS
D25 = 25 WAY 'D' PLUG PIN NUMBERS
D = DELAY TIMER
2 IF REMOTE OCC/UNOCC FEATURE USED
a) FORCE TIME CLOCK TO 'UNOCCUPIED'
b) 10/11 N/O = 'UNOCCUPIED
c) 10/11 N/C = 'OCCUPIED'
VH3 MK II AA + LPHW CONTROL CIRCUIT
D459851 ISS 21
REMOTE ON/OFF 12
CONTROL MCB
P7 P6
111
N/C
12v 12v
FUSE 1A
112
REMOTE DA MPER RELAY
FOR USE WITH FROST
PROTECTION KIT
(IF FI TTED)
FKR1
B
A
4
D3
TO BOILER DEMAND
TERMINALS
6
LPHW MICRO SWI TCHES
(IF FITTED)
LINK FOR NORMAL RUN (BREAK TO STOP M/C)
13
ON/OFF
SWITCH
F1 2.5A
D 1
F2 1A
D 2
CONTROL
POW ER LAMP R14
11
7
10
4
H G
VOLT FREE
M/C ON
28 D4
10
7
R1
11
4
7
Page 20
PROBE
D8 P3 P4 D9
13 14 1 3
AIR STAT'
OUT2 OUT1 OUT3
17
19 22
F ALLING FALLING RISING
D17
21 20 24 23 18
D15
D14
7
R4
4
10
7
R2
4
11
13
14
46
D
A2
A1
47
SD437350 ISSUE 22
01
02
03
04
05
06
07
08
09
N