Dampers; Frost Thermostat; Filter Pressure Transmitter - Dantherm DanX XWPRS Series User Manual

4. COMMISSIONING

4.3.2 Dampers

You will find the following 5 dampers installed in a XWPRS unit:
1. Dehumidification damper
2. By-pass damper
3. Recirculation damper
4. Outdoor air damper
5. Exhaust air damper
Before commissioning the unit make sure that the dampers are opening/closing in the right
direction.
To check this set the controls to night time (no outdoor air) and the dampers should be in the
following positions:
•
Dehumidification damper (1) and recirculation damper (3) fully open.
•
Outdoor damper (4) and exhaust air damper (5) fully closed.
Now change the program to daytime and see if damper 4 and 5 are starting to open and if
damper 1 and 3 are starting to close. Now set the outside air to 100%, wait a few minutes and
check if the dampers have taken the following positions:
•
Dehumidification damper (1) and recirculation damper (3) fully closed.
•
Outdoor damper (4) and exhaust air damper (5) fully open.
Now check (only on XWPRS) the operation of the by-pass damper (2). Make sure that there
is a temperature difference between the swimming pool hall temperature set point and the
outdoor air temperature of at least 10°C, so that the unit runs in heat recovery mode. Now the
larger damper over the heat exchanger should be fully open.

4.4 Frost thermostat

Check if the frost thermostat is set to the correct temperature. The factory setting is +8°C.

4.5 Filter pressure transmitter

Check if the pressure transmitters are set to the correct maximum pressure loss. The factory
setting for the different filter classes are shown in the table below.
Filter type
G4 panel
G3 bag
F5 bag
F7 bag
F7 compact
23
Recommended
pressure loose
200 Pa
250 Pa
250 Pa
250 Pa
250 Pa
Max
pressure loose
200 Pa
250 Pa
400 Pa
400 Pa
400 Pa