Heat Pump" Switch; Heating Element" Switch; Start-Up - Dimplex LI 2M Instructions D'installation Et D'utilisation

6.3

6.3 "Heat pump" switch

The heat pump is ready for operation when the switch is in the "I"
(ON) position. If the water temperature measured on the sensor
R2 drops by 3 K below the preset setpoint, the heat pump is ac-
tivated until the desired water temperature (setpoint) is reached.
The positioning of the R2 sensor depends on whether the heat
pump is used for heating or as hot water heat pump. (Refer to the
integration diagram in the appendix, page A-III)
The function of the heat circulation pump (M3) also changes with
the intended purpose. This pump only operates for the hot water
heat pump if a request is present, i.e. if the actual water temper-
ature has dropped below the preset setpoint.
In its function as heat pump for heating purposes, the "M3" is
also activated by an existing request but is switched off again
only 30 minutes after the request has been exited. Furthermore,
as long as no request is pending, "M3" is switched on for 5 min.
at an interval of 40 minutes to detect the current temperature of
the heating water. The heat circulating pump is also switched on
when the lower operating limit has been undershot.
The heat pump is coded as a heat pump for heating purposes or
a hot water heat pump by using the bridge A10 on terminals
X1[1/2]. Refer to chapter 5.3.

6.4 "Heating element" switch

Optionally, a heating element to be connected externally (not in-
cluded in scope of delivery) can be selected by the heat pump
control.
The heating element is selected permanently if the switch is in
the "I" (ON) position. The process is cut off by the heating ele-
ment control (external) after the temperature set on it has been
reached.
ATTENTION!
An external electrical heating support must be equipped with a safety
temperature limiter.
In switch position " " (automatic operation), the heating ele-
ment is only activated if the requested heating power can no
longer be produced by the heat pump alone after it has run for 4
hours. In this case, the water is heated with heating element sup-
port only up to the preset setpoint temperature (on the rotary con-
troller) of the heat pump.
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The heat pump may only be started up as part of the integrated and filled
water circulation!
To ensure that start-up is performed correctly, it should only be
carried out by an after-sales service technician authorised by the
manufacturer. This may be a condition for extending the guaran-
tee (see Warranty Service).
The following must be verified or ensured at start-up:
When using the heat pump for heating purposes, make sure that
the minimum heating water flow by the heat pump remains en-
sured while the heating valves are closed. For example, an over-
flow valve installed in the heating circuit must be set accordingly.
If these requirements are met, the supply voltage can be estab-
lished and the operation of the heat pump can be started with the
"heat pump" switch. Set the desired setpoint temperature on the
temperature controller.

Start-Up

ATTENTION!
All installations for the water circuit, the air circuit as well as
all electrical installations must have been carried out cor-
rectly and fully.
The hot water system must be filled via an external connec-
tion.
De-aerate the hot water system.
Check the entire hot water system for leaks.
Condensate drain has been installed.