Buderus 500 - 24/S Installation And Maintenance Instructions Manual page 29

Buderus 500-24S with external 230V connection and two port zone valves (S-plan ; see fig. 37 and 38)
AV
Condensing gas boiler
500 – 24/S
PL
CB JB
ZV
CHF CHR
fig. 37
fig. 38 Wiring diagram S-plan with external 230V controls and two port zone valves
Subject to modifications resulting from technical improvements!
Installation and maintenance instructions for Buderus 500 - 24/S • 08/2006
Cylinder
CT
RT
Prog
WC
LSV
ZV
radiator
LSV
reference room / main living area
1 4
5
3
2
2
RT
8
1
C
Not used
2
6
CT
Brown
5
2
Blue
Grey 1
10
Orange
3
Gr/Yel
ZV
CH
Brown
8
Blue
2
Grey
1
Orange
10
Gr/Yel
3
ZV
DHW
TRV
LSV
other rooms
1
L
1
2
N
3
E
2
230vac
3
Not used HW OFF
4
6 HW ON
4 CH ON
5
1 L
6
2
N
3
E
7
Programmer
8
1
Brown
9
2
Blue
3
10 Gr/Yel
PL
Black lead
Boiler DBA
Installation
Key to abbreviations:
AV = Air Vent
CB = Connector Block
CHF = Central Heating Flow
CHR = Central Heating Return
CT = Cylinder thermostat
JB = Junction Box /
RTH Converter
LSV = Lockshield Valve
PL = Permanent Live
Prog= Programmer
RT = Room thermostat
TRV = Thermostatic Radiator
Valve
WC = Wiring Centre
ZV = Two port Zone Valve
radiator
PL
1
10
2
2
3
JB
230 vac
Buderus • http://www.buderus-domestic.co.uk
1
29