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