Installation; General Information; Heating System Connection; Heat Source Connection - Dimplex WI 9 ME Instructions D'installation Et D'utilisation

7
7

Installation

7.1 General Information

The following connections need to be established on the heat
pump:
Flow and return flow of the well system
Flow and return flow of the heating system

Temperature sensor

Power supply

7.2 Heating System Connection

ATTENTION!
Flush the heating system prior to connecting the heat pump.
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.
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):
Total alkaline earths
Total heat
in mol/m³ and/or
output in [kW]
mmol/l
≤
up to 200
≤
200 to 600
> 600 < 0.02
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.
EN-6
Total
hardness in °dH
≤
2.0 11.2
≤
1.5 8.4
< 0.11
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).

7.3 Heat Source Connection

The following procedure must be observed when connecting the
heat source:
Connect the well pipes to the heat pump flow heat source and re-
turn flow.
ATTENTION!
The well water must comply with the required water quality standards.
The hydraulic plumbing diagram must be adhered to.
7.4 Temperature sensor
The following temperature sensors are already installed or must
be installed additionally:
External temperature sensor (R1) supplied
Return temperature (R2) installed
Flow temperature secondary (R9) installed
Flow temperature primary circuit (R6) installed
7.4.1 Sensor characteristic curves
-20 -15
Temperature in °C
Standard NTC-2 in 14.6 11.4
kΩ
NTC-10 in kΩ 67.7 53.4
15 20 25 30 35
2.9 2.4 2.0 1.7 1.4
14.9 12.1 10.0 8.4 7.0
The temperature sensors to be connected to the heat pump
manager must correspond to the sensor characteristic curve
illustrated in Fig.7.1. The only exception is the external
temperature sensor included in the scope of supply of the heat
pump (see Fig.7.2)
Fig. 7.1:Sensor characteristic curve NTC-10
-10 -5 0 5 10
8.9 7.1 5.6 4.5 3.7
42.3 33.9 27.3 22.1 18.0
40 45 50 55 60
1.1 1.0 0.8 0.7 0.6
5.9 5.0 4.2 3.6 3.1