page no. 21 of 40
VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.
Controlling circuitry is via a numbered terminal strip wired
back to the in-built MC200/CAB controller. If an external
control panel is to be used, then these terminals must be
used. Connection terminals are:
terminal 1
230V Heat Low Demand
terminal 3
230V Main Fan Only
terminal 4 & 5 Heat High Circuit
terminal 6
Lockout indication - 230V Output
terminal 7
Burner reset - Neutral Switch
terminal 8
0-10V d.c. Modulation
terminal 9
0V Modulation
terminal 10
Live to Controller
terminal 11
Neutral to Controller
terminal E
Earth to Controller
3
4
5
6
7
8
2
1
1
1
9
1
0
N
L
E
N
230v Supply
for Controller
L
Modulating (-)
Modulating (+) 0-10v
Lockout Reset
!
Lockout Indication
- N.O. Thermostat or Relay
- 230v in. ( Delay on, Delay Off)
- Accessory Terminal. 4A Fuse Protected
- 230v in. Not used on modulating heaters
High Fire
Call for Fan Only
230v Out
Call for Heat
MAINS SUPPLY
230V AC 50HZ
- Momentary switch to neutral
- 230v out
He
at O
n Si
gn
al 2
30V
Out
put 2
30V
In
put 2
30V
Fa
n O
nl
y Si
gn
al 2
30V
Li
ve O
ut
put
N
eu
tra
l
Ear
th
230V Supply
for Controller
High Fire
Circuit
Lo
ck
out Si
gn
al 2
30V
2
1
3
4
5
6
7
8
9
10
11
12
t1
t3
t4
t5
t6
t11 t
t10
t7
t8
t9
*L
oc
ko
ut R
es
et
(S
w
itc
he
d N
eu
tra
l)
*M
od
ul
at
in
g s
ign
al
0-1
0V
dc
*M
od
ul
at
in
g s
ign
al
0Vd
c
Wiring terminal strip for External Controller
* when used
