Daikin Europe NV
17
Underfloor heating without pump
Connect the underfloor heating system (D) and set the maximum CH supply
temperature of the CH boiler to the design condition. Fit a clamp thermostat (A) onto
the supply tube underneath the CH boiler. The clamp thermostat with blind cap must
be set to a maximum supply temperature of 55°C.
Fit the on/off room thermostat (B) and connect in a series with the clamp thermostat.
The boiler must be connected to X4 - 6/7.
In this situation, the pump in the boiler is used to bridge the loss of pressure of the
underfloor heating system. Using the loss of pressure graph par. 7.4, the maximum
loss of pressure of the underfloor heating system can be determined.
Make sure there is a minimal water circulation. See par. 7.3.
In case of an underfloor heating system without pump, we recommend changing the
following parameter settings:
par. o from 0 to 3.
par. P from 5 to 2.
Parameter 3 must also be set to its minimum level, or the
Transmission loss of the property, see par. 7.3.
5.1.3
Dividing CH installation in groups in case of additional heat
sources
Operating principle
If the room thermostat switches off the boiler because another heat source, the other
rooms may cool down.
This can be resolved by splitting the CH installation into two groups. The group with the
external heat source (Z2) can be shut off from the main circuit by means of an
electrical shut-off valve. Both groups are fitted with their own room thermostat.
Please note: This "external heat source" regulation may only be applied if no extra
external boiler has to be heated up (installation type 1).
Installation instructions
1.
Install the valve in accordance with the connection diagram.
2.
Connect the room thermostat of group 1 to op X4
–
6/7.
3.
Connect the room thermostat of group 2 to op X4
–
11/12.
4.
Change parameter A (see Parameter settings via the service code par. 7.2).
Please note: The room thermostat in group
1 MUST
be an on/off thermostat. The room
thermostat in group 2 may be an OpenTherm thermostat or an on/off thermostat.
Connection diagram "external heat source" regulation
A.
CH boiler
B.
Electrical shut-off valve 230 V ~
C.
Radiators
T1. Room thermostat group 1
T2. Room thermostat group 2
Z1. Group 1
Z2. Group 2
Summary of Contents for EKOMBG22ABV1
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