Dimplex SIKH 9 ME, Installation And Operating Instructions Manual

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SIKH 9ME
7 Installation
7.1 General Information
The following connections need to be established on the heat
pump:
 Flow and return flow of the brine system
 Flow for heating and domestic hot water preparation
 Joint return flow for the heating and domestic hot water
preparation
 Return flow of the overflow valve
 Connection for an additional expansion vessel (according to
need)
 Outflows for the pressure relief valves
 Condensate outflow
 Power supply
7.2 Heating System Connection
The heat pump is equipped with separate outputs for the heating
circuit and the hot water circuit.
If the heat pump is not intended to be used to heat up the hot wa-
ter, the hot water output must be permanently sealed.
Before connecting the heating water system to the heat pump,
the heating system must be flushed to remove any impurities,
residue from sealants, etc. Any accumulation of deposits in the
liquifier could cause the heat pump to completely break down.
An overflow valve is installed in the device for systems in which
the heating water flow can be shut off via the radiator or thermo-
stat valves. This ensures a minimum heating water flow rate
through the heat pump and helps to avoid faults.
Once the heating system has been installed, it must be filled, de-
aerated and pressure-tested.
Consideration must be given to the following when filling the sys-
tem:
 Untreated filling water and make-up water must be of drink-
ing water quality (colourless, clear, free from sediments)
 Filling water and make-up water must be pre-filtered (pore
size max. 5µm).
Scale formation in hot water heating systems cannot be com-
pletely avoided, but in systems with flow temperatures below
60°C the problem can be disregarded.
With medium and high-temperature heat pumps, temperatures
above 60°C can be reached.
The following standard values should therefore be adhered to
concerning the filling water and make-up water (according to VDI
2035 Sheet 1):
Minimum heating water flow rate
The minimum heating water flow rate through the heat pump
must be assured in all operating states of the heating sys-
tem. This can be accomplished, for example, by installing either
a dual differential pressureless manifold or an overflow valve.
The procedure for adjusting an overflow valve is described in the
Chapter Start-Up.
NOTE
The use of an overflow valve is only recommended for panel heating and
a max. heating water flow of 1.3 m³/h. System faults may result if this is
not observed.
Antifreeze protection for installation locations
prone to frost
The antifreeze function of the heat pump manager is active
whenever the heat pump manager and the heat circulating
pumps are ready for operation. If the heat pump is taken out of
service or in the event of a power failure, the system has to be
drained. The heating circuit should be operated with a suitable
antifreeze if heat pump systems are implemented in buildings
where a power failure can not be detected (holiday home).
The integrated expansion vessel has a volume of 24 litres. This
volume is suitable for buildings with a living space area to be
heated of maximum 200 m².
The volume should be checked by the heating system techni-
cian. If necessary, an additional expansion vessel must be in-
stalled (according to DIN 4751, Part 1). The tables listed in the
manufacturers’ catalogues simplify dimensioning the system on
the basis of the water content.
ATTENTION!
In the case of large-volume heating circuits, an additional expansion
vessel must be used to supplement the installed expansion vessel (24
litres, 1.0 bar admission pressure).
7.3 Heat Source Connection
The following procedure must be observed when connecting the
heat source:
Connect the brine pipe to the heat pump flow and return.
The hydraulic plumbing diagram must be adhered to.
The dirt traps and micro bubble air separator included in the
scope of supply must be inserted in the brine inlet of the heat
pump by the customer.
The brine liquid must be produced prior to charging the system.
The liquid must have an antifreeze concentration of at least 25 %
to ensure frost protection down to -14 °C.
Only monoethylene glycol or propylene glycol-based antifreeze
may be used.
The heat source system must be de-aerated and checked for
leaks.
ATTENTION!
The brine solution must contain at least a 25 % concentration of a
monoethylene glycol or propylene glycol-based antifreeze, which must
be mixed before filling.
Total heat
output in [kW]
Total alkaline earths
in mol/m³ and/or
mmol/l
Total
hardness in °dH
up to 200

2.0

11.2
200 to 600

1.5

8.4
> 600 < 0.02 < 0.11