Commissioning; Maintenance - Rotex RKHWE300A3V3 Manuel D'installation

Note: only relevant field wiring is shown.
K1M
TR1
K1M
TR1
X9A
A1P
X13A
A1P
A4P
X4M
1 2
thermostat
1 2
X4M
X3M
L1 L2
L N
X3M (230V)
>50 mm
X4M
L N
V3
230 V AC
3 kW
C
OMMISSIONING
Before putting power to the unit, make sure:
the unit is filled with water,
the sensor of the thermistor cable is mounted correctly in the
thermistor socket,
a pressure relief valve is installed.
Check the operation of the 3-way valve: make sure that when the
indoor unit is in domestic water mode it sends hot water to the tank;
when it is in room heating mode, it sends water to the room (feel the
tubes by hand).
RKHWE300A3V3
Domestic hot water tank for air to water heat pump system
4PW50208-1
K5M
K2M
K5M
K2M
K3M
K7M
3M
F2B F1B
K4M
K6M
X2M
3 4 4a 5 6 7 8 9 10 11 12 13 14 15 15a 16 17 18 19 20 21
Q2L SOLAR PUMP
thermal
2-way valve 3-way valve
fuse OPTIONAL
X2M
1 2 3 L1 L2 L3 N
X1M
X2M
2
1 2 4 3
M
AINTENANCE
In order to ensure optimal availability of the unit, a number of checks
and inspections on the unit and the field wiring have to be carried out
at regular intervals.
Before carrying out any maintenance or repair activity,
always switch off the circuit breaker on the supply
panel, remove the fuses or open the protection
devices of the unit.
Make sure that before starting any maintenance or
repair activity, also the power supply to the outdoor
unit is switched off.
1 The pressure relief device valve is to be operated regularly as to
remove lime deposits and to verify that it is not blocked.
2 Once a year: Descaling
Depending on the water and set temperature, scale will deposit
on the heat exchanger and booster heater inside the domestic
hot water tank.
This will restrict heat transfer and can cause burn out of the
booster heater. For this reason, descale the booster heater and
the heat exchanger.
Do not use sharp metal tools or strong acid to remove the
scaling. Only use commercially available cleaning and
scale removal agents for copper and enamelled surfaces.
After removing the scale, rinse the domestic hot water tank
by water jet.
3 Once every 2 year: Anode.
Check if the anode is not deteriorated. If the diameter of the
anode has decreased with 10 mm or more, make sure to
replace it (original diameter is 33 mm).
It is of the utmost importance that the anode is in good
contact with the domestic hot water tank. For this reason,
after replacing the anode or other servicing, make sure
that the anode is connected with the earthing screw.
Installation manual
5