Installation Instructions

Start-up 6
0020147164_04 aroTHERM Installation instructions 23
Heating water char-
acteristics
Unit Low-salt Saline
Oxygen mg/l < 0.1 < 0.02
6.8 Filling the heating installation
Caution.
Risk of material damage due to heating
water that is extremely calciferous or cor-
rosive or contaminated by chemicals.
Unsuitable tap water damages the seals
and diaphragms, blocks components in the
product and heating installation through
which the water flows and causes noise.
▶ Only fill the heating installation with suit-
able heating water.
Note
If a heat exchanger module is used, the heating
circuit must be topped up with heating water.
Conditions: System separation with a heat exchanger module
▶ Connect the filling cock with the heating water supply
using a cold water valve where possible.
▶ Open all radiator valves (thermostatic radiator valves) of
the heating installation.
▶ Open the cold water valve.
▶ Slowly open the filling cock.
▶ Fill it with water until the required filling pressure is
reached.
▶ Close the cold water valve.
▶ Purge all radiators.
▶ Then check the filling pressure on the display.
▶ Top up with more water if necessary.
▶ Close the filling cock.
6.9 Activating the heat pump
1. Ensure the maximum flow temperature setting matches
the heating installation.
2. To fully activate the heating installation, observe the
installation instructions for the system controller.
3. Switch on the line protection switch in the fuse box
which is connected to the heat pump.
6.10 Checking the product's operation
1. Ensure that the external control equipment (thermo-
stats, external sensors, etc.) are sending a heating
demand to the heat pump. When configuring several
areas, test heating circuit by heating circuit and ensure
that the appropriate heating circuit gets warmer.
2. Ensure that all heating circuit thermostatic radiator
valves are open.
3. If necessary, balance the heat generator.
6.11 Operating noises
"Hhmmm..." (*)
"Ttsheeh...!"
"Eeee..."
“Clink!"
"Chug, chug,
chug,..."
"Whirr..." (*)
1
2
3
4
5
6
* Permanent operating
noises
The noises listed do not constitute a fault with the heat
pump.
In various operating modes, the noises come from the heat
pump (Start, Thawing, Stop).
6.12 Adjusting the heating circuit
6.12.1 Purging the heating circuit
Conditions: SW14 open-end spanner
▶ Connect one end of the hose to the purging valve.
▶ In order to collect the residual glycol when purging the
heating circuit, insert the other end of the hose into the
mixing container.
▶ Close the stop valves on the back of the product.
▶ Increase the pressure in the heating circuit.
▶ Open the purging valve with an open-end spanner.
▶ Open the lower stop valve on the back of the product.
▶ If liquid escapes from the pipe, close the purging valve.
▶ Check the pressure in the heating circuit. If necessary,
increase it.