Intergas Heating Ltd 20
6.1.4 Appliance with zone control.
If there is, next to the CH system an other heating source (as for example a stove
or a fireplace) in the living room often the problem occurs that the other rooms cool
down.
This can be solved by splitting up the CH system into two separate zones.
The zone regulation can only be used when there is no external DHW tank present
(in case of a system boiler)
Schedule zone-regulation
1. A. Appliance
B. Electrical Shut-off valve 230 V ~
C. Radiators
2. T1. Room thermostat zone 1
T2. Room thermostat zone 2
Z1. Zone 1
Z2. Zone 2
Operating principle
The zone regulation contains 2 room thermostats and a shut off valve. When the
room thermostat of zone 2 generates a heat demand, the shut off valve opens and
the complete CH system heats up (zone 1 and 2). When the heat demand of zone
2 is not or no longer present, room thermostat 1 controls the room temperature in
zone 1.
Installation
1. Place the shut-off valve into the heating system according to the schedule.
2. Connect the room thermostat of zone 1 on to connector X4 – 6/7.
3. Connect the room thermostat of zone 1 on to connector X4 – 11/12.
4. Modify parameter A in the parameter list. (See § 8.3)
Note : The room thermostat for zone 1 must be an on/off type. The room thermostat
for zone 2 can be either on/off or “Open Therm”.
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