13
Subject to change without notice | 83059100fUK – Translation of the original operating manual | ait-deutschland GmbH
Connect the heat pump module with hydraulic
module, hydraulic station or wall-mounted
controller
The connection is established using the EVS 8 or EVS
accessory.
●
EVS 8 load and bus connector with 8 m cable.
A maximum of 3 EVS 8 connections are possible.
EVS 8 installation instructions
●
EVS: Load and bus connector.
Cable on site, maximum cable length of 30 m.
The bus cable must be a shielded cable of at least
4 x 0.5 mm².
As load line:
●
For the 12 kW unit a 5 x 2.5 mm² cable with
protective conductor
●
For the 8 kW unit a 3 x 2.5 mm² cable with pro-
tective conductor
EVS installation instructions
1. Route the two plug-in connections of the load and
bus cable to the plug-in points on the heat pump
module.
2. Couple the connectors together.
3. Fit cover for plug-in connections-
8
Flushing, filling and venting
8.1 Heating water quality
NOTE
●
For detailed information refer, among
other things, to the VDI Guidelines
2035 "Vermeidung von Schäden in
Warmwasserheizanlagen" (preventing
damage in hot water heating systems)
●
Required pH value: 8.2 … 10
●
for aluminium materials:
pH value: 8.2 … 8.5
►
Fill the system with deionised heating water
(VE water) or with water corresponding to VDI
2035 only (low-salt operation of the system).
Advantages of low-salt operation:
●
Low corrosion-promoting properties
●
No formation of mineral scale
●
Ideal for closed heating circuits
● Ideal pH value due to self-alkalisation after filling
the system
●
If necessary, simple alkalisation to pH value 8.2
by adding chemicals
8.2
Flush, fill and vent the heating
circuit
Outlet pipe of the safety valve is connected.
►
Ensure that the set pressure of the safety valve is
not exceeded.
NOTE
The venting program on the controller can
also be used to support the flushing and
venting process. It is possible to control
individual recirculating pumps and even the
switching valve through the venting program.
The valve motor then does not have to be
removed.
1.
Pull the U-clip off the floor of the valve motor.
2.
Pull the valve motor carefully off the 3-way switch
-
ing valve.
3. Vent system at the respective highest point.
4. Vent heat pump.
