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Installation
• Length of the circulation pipe max. 20 m
• The temperature drop must not exceed 5 K
For easy compliance with these specifications:
▶ Install regulation valve with thermometer.
In order to save electrical and thermal energy, do not run the circulation
pump in continuous operation.
4.4
Installation of accessories
Placement of the Connect-Key K30RF
You can find information on the Connect-Key K30RF, the WIFI
connection, establishing the connection with the Internet and
integration of accessories in the corresponding app and in the packaging
of the Connect-Key K30RF.
On the side of the holder there is a lever that locks the module in place
when it has been mounted. The lever is closed at delivery.
1. Open the lever ([2], figure 9).
2. Place the module in the holder ([1], figure 9).
3. Close the lever.
1
Fig. 9
Connect-Key K30RF placement
[1]
Holder
[2]
Lever
4.4.1
External connections
Maximum load at relay outputs: 5A, 400W, cos At a higher load
an intermediate relay must be installed.
• Relay output PK2 is active in cooling mode. Possible application
areas:
– Changing between cooling/heating for fan coils. This requires that
the fan convector's control unit has this feature.
– Pump control in a separate circuit which is exclusively intended
for cooling mode.
– Underfloor heating system control in damp rooms.
10
2
0010049173-001
4.4.2
Safety thermostat
In some countries, a safety thermostat is required to be installed in under
floor heating circuits. The safety temperature limiter is connected to
external input 3. Set the operation for external input ( control unit
manual).
It is recommended to use a safety thermostat with automatic reset.
If the switching temperature of the safety thermostat is set too low or the
thermostat is placed too close to the indoor unit, this may lead to a
temporary blockage of the heating circuit pump PC1 and the heat
sources after DHW charging.
▶ Set a temperature that is suited for the floor.
▶ Place the thermostat at least >1m from the indoor unit.
4.4.3
Several heating circuits (with heating circuit module)
In the default setting, a heating circuit without mixer can be controlled
via the controller. If other circuits are installed, a heating circuit module
is required for each one.
▶ Install the heating circuit module, mixer, pump and other
components according to the selected system solution.
▶ Before commissioning the system, make the setting for the heating
circuit at the heating circuit module, if required ( manual for
heating circuit module).
▶ Make the settings for several heating circuits as described in the
controller manual.
4.4.4
Summary alarm (with accessory module)
The appliance has no output for summary alarm. If there is a need for a
summary alarm this has to be accomplished by installing of an accessory
module MU100.
▶ Install the accessory module and do the settings for summary alarm
before commissioning of the system ( manual for accessory
module).
4.5
Installation with cooling mode
4.5.1
Condensing cooling mode with fan convectors
It is required to install a non-return valve if the buffer cylinder is installed
in a parallel setup and the cooling mode is active.( see required
accessories chapter in 2.9.1).
NOTICE
Material damage due to moisture!
Without full insulation against condensation, moisture can attack
neighbouring materials.
▶ Provide all pipes and connections up to the fan convector with
condensation insulation.
▶ Use an insulating material designed for cooling systems with
condensate formation.
▶ Connect condensate pipes to the drain.
▶ Do not use a condensation sensor when in cooling mode below the
dew point.
▶ Do not use a room temperature-dependent control unit with
integrated condensation sensor when in cooling mode below the dew
point.
When exclusively fan convectors with a drain and insulated pipes are
used, the flow temperature can be reduced to 7 °C.
Compress 5800i AW – 6721862724 (2023/06)
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