Horstmann HRT4-B - Fully Pumped Heating System: 3 Port Valve Configuration; Fully Pumped Heating System: 2 Port Valve Configuration

6





























HRT4-B
ROOM
STAT
HRT4-B
ROOM
STAT








MAINS
SUPPLY
MAINS
SUPPLY








W
BL
O
GR
Fully Pumped Heating System using HRT4-B room stat, cylinder stat and Three Port Mid
Position Valve with a Horstmann ChannelPlus H21/H27 electronic programmer.
Fully Pumped Heating System using HRT4-B room stat, cylinder stat and Two (2 Port) Spring
Return Valves with auxiliary switches and a Horstmann ChannelPlus H21/H27 electronic
programmer.
INSTALLATION AND CONNECTION OF THE HRT4-B MUST BE CARRIED OUT BY A SUITABLY QUALIFIED
PERSON. WARNING: ISOLATE MAINS SUPPLY BEFORE COMMENCING INSTALLATION.
1
4
1
4
These diagrams are schematic and should be used for guidance only.