Connection Details For Connection To; Any Uk Standard Boiler - Vaillant uniSTOR VIH GB 125 S Instructions For Installation And Use Manual

5.4.5.4 Connection details for connection to any UK standard boiler
Main Supply
3 Amp Fused
N
E 1/N 2/L
E 1/N
E BL BR
Spring Return Zone
Valve
Heating Zone
Fig. 13 2 x 2 port valve system
Boiler Terminal Designation:
L, 1: Mains Live
RS, 2: Room Thermostat
FS, 3: Frost Stat
N, 4: Mains Neutral
E, 5: Mains Earth
PE, 6: Pump Earth
PN, 7: Pump Neutral
PL, 8: Pump Live
CE: Chassis Earth
BR Brown
BL Blue
GR Grey
OR Orange
W White
DHW Domestic Hot Water
HTG Heating
uniSTOR GB
Boiler Terminal
8 7 6 5
L
PL PN PE E
External wiring box
(Do not use pre-wired printed circuit board type)
1 2
3 4
N
L
9 2/L RS 6 1/N
GR OR
COM N SW/L E
Room Thermostat
2 Channel Programmer
4 3 2 1
1/N FS RS 2/L CE E
5 6 7 8 9 10
not used
9 E E 1/N 10
E BL BR
Spring Return Zone
Valve
uniSTOR VIH GB ...
Important:
1-10 must go to the corresponding number in the wiring
box.
Installation 5
HW CH HW CH
N L
OFF OFF ON ON
N/U N/U
1/N 2/L 7 6
PL PN PE
L N
Pump
2/L E 7 10 E
N/U
GR OR
1 2 3
Cylinder Stat
19