Bedienungsanleitung Dimplex LAW 9IMR (Seite 34 von 100) (Deutsch, Englisch, Französisch)

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English LAW 9IMR - LAW 14ITR

It is also recommended to install a shut-off device in the return

before integration into the indoor unit is carried out.

Where necessary, heating connection pipes for the heat pump

can also be laid underneath the cylinder, at its rear.

To integrate a second (external) heat generator in the heating

water circuit, it is necessary to cut out the thinned material area

underneath the unit cover.

The copper pipe link cable (in the flow direction) before the

electric heating must also be removed. If the electric heating is

to remain in the heating water circuit, the radiator must be

turned approximately 18° - 20° towards the cylinder. This is

necessary to ensure that connection can take place without ob-

struction (with pipe bend 28 and cap nut).

If the electric heating is to be removed from the heating circuit,

the heating pipes are connected directly to the thread connec-

tions 1 1/4" with a flat sealing connection. In this case, the con-

nected flow pipe should be fixed in the area where the radiator

mounting used to be (weld-free and secure).

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 system.

When the minimum heating water flow rate is undershot, the

plate heat exchanger in the refrigeration circuit can freeze,

which can lead to total loss of the heat pump.

The nominal flow rate is specified depending on the max. flow

temperature in the device information and must be taken into

account during planning. With design temperatures below

30 °C in the flow, the design must be based on the max. volume

flow with 5 K spread for A7/W35.

The specified nominal flow rate (See “Device information” on

page 19.) must be guaranteed in every operating status. An in-

stalled flow rate switch is used only for switching off the heat

pump in the event of an unusual and abrupt drop in the heating

water flow rate and not to monitor and safeguard the nominal

flow rate.

Frost protection

A method of manual drainage must be provided for heat pump

internal components which are exposed to frost. The frost pro-

tection function of the heat pump manager is active whenever

the heat pump manager and the heat circulating pump are

ready for operation. The system has to be drained if the heat

pump is taken out of service or if a power failure occurs. The hy-

draulic network should be operated with suitable frost protec-

tion if heat pump systems are implemented in buildings where

a power failure cannot be detected (vacation homes etc.).

NOTE

Chemical treatment to protect from rust should be carried out

by the installer.

** ca. 18° -20 °

Copper pipe link cable

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