37
- Installation & Servicing
INSTALLATION
50
MAINS VOLTAGE CH AND DHW CONTROLS WITH DHW VALVE OUTPUT
Alternatives: Try our programmable room thermostat, outside sensor and tank sensor kit for enhanced user comfort. Full
instructions provided with kits.
PUSH
Programmer Room stat
ima5456
Motorised
valve
Cylinder
thermostat
ima5455
MOTORISED POSITIONAL VALVE
(NOT MID POSITION VALVE)
SYSTEM
PUMP
(MAXIMUM LOAD 1 AMP)
CONNECT VIA A RELAY
FOR GREATER CURRENTS)
ROOM
CYLINDER
sys
Parameter modifications see Frames
38, 39 and 40.
Parameter 35 = 03 If a live output is
required from terminal 12 for
positioning of the valve to satisfy CH
demand.
Parameter 35 = 23 If a live output is
required from terminal 12 for
positioning of the valve to satisfy DHW
demand.
Note.
This system will provide heating to one zone only at a time with
DHW priority. To heat more than one zone simultaneously, use
zone thermostat to energise individual zone valves with all
calls for CH applying live to terminal 5 and a call for DHW
applying live to terminal 7.
If all zones are fitted with individual zone valves a hydraulic
bypass will be required to allow pump overrun. See page 6
for details.
INSTALLATION
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