Domestic Hot Water Tank Installation Configuration; Initial Start-Up At Low Outdoor Ambient Temperatures; Pre-Operation Checks; Powering Up The Unit - Rotex RDLQ011AA6V3 Mode D'emploi

Domestic hot water tank installation configuration
When no domestic hot water tank is
installed, toggle switch SS2-2 should be set to
OFF (default).
When a domestic hot water tank is installed,
toggle switch SS2-2 should be set to ON.

Initial start-up at low outdoor ambient temperatures

During initial start-up and when water temperature is low, it is
important that the water is heated gradually. Failure to do so may
result in cracking of concrete floors due to rapid temperature change.
Please contact the responsible cast concrete building contractor for
further details.
To do so, the lowest leaving water set temperature can be decreased
to a value between 15°C and 25°C by adjusting the field setting
[9-01] (heating set point lower limit). Refer to "Field settings" on
page 21.
NOTE Heating between 15°C and 25°C is performed by the
backup heater only.

Pre-operation checks

Checks before initial start-up
Switch off the power supply before making any
connections.
After the installation of the unit, check the following before switching
on the circuit breaker:
1 Field wiring
Make sure that the field wiring between local supply panel and
unit and valves (when applicable), unit and room thermostat
(when applicable), and unit and domestic hot water tank has
been carried out according to the instructions described in the
chapter "Field wiring" on page 12, according to the wiring
diagrams and according to European and national regulations.
2 Fuses or protection devices
Check that the fuses or the locally installed protection devices
are of the size and type specified in the chapter "Technical
specifications" on page 33. Make sure that neither a fuse nor a
protection device has been bypassed.
3 Booster heater circuit breaker F2B
Do not forget to turn on the booster heater circuit breaker F2B in
the switch box (applies only to units with optional domestic hot
water tank installed).
4 Earth wiring
Make sure that the earth wires have been connected properly
and that the earth terminals are tightened.
5 Internal wiring
Visually check the switch box on loose connections or damaged
electrical components.
6 Fixation
Check that the unit is properly fixed, to avoid abnormal noises
and vibrations when starting up the unit.
7 Damaged equipment
Check the inside of the unit on damaged components or
squeezed pipes.
R(D/B)LQ011~016AA6V3+W1
Unit for air to water heat pump system
4PW53149-1
8 Refrigerant leak
Check the inside of the unit on refrigerant leakage. If there is a
refrigerant leak, call your local dealer.
1 2 3 4
9 Power supply voltage
Check the power supply voltage on the local supply panel. The
voltage must correspond to the voltage on the identification label
of the unit.
1 2 3 4
10 Air purge valve
Make sure the air purge valve is open (at least 2 turns).
11 Pressure relief valve
Check if the backup heater vessel is completely filled with water
by operating the pressure relief valve. It should purge water
instead of air.
Operating the system with the backup heater vessel not
completely filled with water will damage the backup heater!
12 Shut-off valves
Make sure that the shut-off valves are fully open.
Operating the system with closed valves will damage the
pump!

Powering up the unit

When power supply to the unit is turned on, "88" is displayed on the
user interface during its initialisation, which might take up to 30
seconds. During this process the user interface cannot be operated.

Setting the pump speed

The pump speed can be selected on the pump (see "Main
components" on page 8).
The default setting is high speed (I). If the water flow in the system is
too high (e.g., noise of running water in the installation) the speed
can be set to low speed (II).
NOTE The speed dial on the pump indicates 3 speed
settings. However, only 2 speed settings exist: low
speed and high speed. The indicated medium speed
setting on the speed dial is equal to low speed.
The available external static pressure (ESP, expressed in mH
function of the water flow (l/min) is shown in the graph below.
7
6
5
4
3
2
1
0
16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58
I I I I I I I I
[l/min]
Installation manual
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