Horstmann C-Stat ZW Installation Guide download pdf (Page 6)

C-Stat ASR Receiver replacing a conventional room thermostat on a fully pumped

system with existing programmer and two spring return valves with auxiliary switches

6

N L

ON

OFF

ON

OFF

HOT

WATER

CENTRAL

HEATING

Programmer

ASR Receiver

MAINS

SUPPLY

N

L

E

CALLSAT

CALL

CYL

STAT

C

SAT

2

3

4

PUMP

&

BOILER

N

L

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