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Water after-heating element - duct installation
The water heating element is for duct connection and it cannot be integrated into the ventilation unit.
The water heating element is supplied as an accessory consisting of:
1. Water heating element with T9 temperature sensor and frost thermostat B44
2. Actuator and regulation valve
Danfoss AME 140/24V 0-10V signal, 2-way valve VZ2 Kv 0.4 (Nilan supply) the Kvs value must
be checked against
the power supply.
Differential pressure: 0.1 - 0.6 bar.
With a flow temperature of 60°C and at maximum heat output, the temperature is estimated to fall with 20°C over the heating
element.
3. Bleed valve (not supplied by Nilan)
4. Sediment trap (not supplied by Nilan)
IMPORTANT regarding Danfoss actuator type AME 140:
Reinstallation of the actuator must
be done as follows:
1. Disconnect the power supply and remove the cover from the actuator
2. Release the gear by pressing and holding the button at the bottom of the casing, while turning the spindle fully (anticlockwise)
3. Install the actuator and connect up the power supply
4. Move DIP-switch no. 1 to ON, and then to OFF
5. It calibrates automatically for up to 6 minutes. (The diode flashes during calibration. After completion, it stays on)
6. Put the cover on the actuator
WARNING
The water after-heating element must be installed by a certified plumber.
WARNING
If you install the water after-heating element outside the climate screen of the building, it must be protected against
frost.
Supply flow
Return flow
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