7
7.4 Electrical Connection
The following electrical connections must be
established on the heat pump:
-
Connection of the control wire to the control panel
of the heat pump via terminals X1: L/N/PE.
-
Connection of the load wire to the control panel of
the heat pump via terminals X6: L/N/PE.
-
Connection of the brine pump (to be provided by
the customer) to the control panel of the heat pump
via terminal X1: PE and pump contactor K5: 2/4.
All electrical components required for the operation
of the heat pump are located on the control panel.
For detailed instructions concerning the connection
and functioning of the heat pump controller refer to
the operating manual supplied with the controller.
A disconnecting device with a contact gap of at least
3 mm (e.g. utility company shut-off contactor or power
contactor) as well as a 1-pole circuit breaker have to
be provided. The required cross-sectional area of the
conductor is to be selected according to the
7.3 Connection on Heat Source Side
The following procedure must be observed when
making the connection:
Connect the brine line to the flow and return pipe
of the heat pump.
The supplied strainer must be fitted
in the heat source inlet of the heat pump in order
to protect the evaporator against the ingress
of impurities.
In addition, a powerful vent must be installed at
the highest point of the heat source system. The
hydraulic plumbing diagram must be observed
here.
The brine liquid must be produced prior to
charging the system. The brine concentration
must be at least 25 %. Freeze protection down to
-14
°
C can thus be ensured.
Only antifreeze products on the basis of mono-
ethylene glycol or propylene glycol may be used.
The heat source system must be vented and be
checked for leaks.
The brine solution must contain at
least 25 % of an antifreeze and corrosion
protection agent on a monoethylene glycol or
propylene glycol basis.
8
CAUTION!
MOUNTING
COMMISSIONING
CAUTION!
power consumption of the heat pump, the technical
connection requirements of the relevant electrical
utility company as well as all applicable regulations.
Details on the power consumption of the heat pump
are contained on the product information sheet and
the typeplate. The terminals are designed for a max.
conductor cross-section of 10 mm˝.
COMMISSIONING
8.1 General
To ensure proper commissioning it should be
carried out by an after-sales service authorized by
the manufacturer. Only then can an extended
warranty period of 3 years in total be granted (cf.
Warranty service). Commissioning must be carried
out in the heating mode.
8.2 Preparation
Prior to commissioning, the following items need to
be checked:
-
All connections of the heat pump must have been
made as described in Chapter 7.
-
The heat source system and the heating circuit
must have been filled and checked.
-
The strainer must have been fitted in the sole inlet
of the heat pump.
-
In the brine and heating circuits all valves that could
impair the proper heating water flow must be open.
-
The settings of the heat pump controller must be
adapted to the heating installation in accordance
with the instructions contained in the controller's
operating manual.
8.3 Commissioning Procedure
The start-up of the heat pump is effected via the heat
pump controller.
Commissioning of the heat pump
must be performed in accordance with the
mounting and operating manual of the heat
pump controller.
Where the minimum heating water flow rate is assured
by means of an overflow valve, the valve must be set
to meet the requirements of the heating installation.
An incorrect setting may result in various error
symptoms and an increased electrical power
CAUTION!
