Do not install the heater kit in places such as the following:
Where there is mist of mineral oil, oil spray or vapour.
Plastic parts may deteriorate, and cause them to fall out or
water to leak.
Where corrosive gas, such as sulphurous acid gas, is
produced.
Corrosion of copper pipes or soldered parts may cause the
refrigerant to leak.
Where there is machinery which emits electromagnetic
waves.
Electromagnetic waves may disturb the control system, and
cause malfunction of the equipment.
Where flammable gases may leak, where carbon fibre or
ignitable dust is suspended in the air or where volatile
flammables, such as thinner or gasoline, are handled.
Such gases may cause a fire.
Where the air contains high levels of salt.
Where voltage fluctuates a lot, such as that in factories.
In vehicles or vessels.
Where acidic or alkaline vapour is present.
O
VERVIEW OF THE HEATER KIT
CAUTION
The total system (indoor and outdoor unit) is designed for
combination with a Rotex heater kit. In case another heater
kit is being used in combination with the Rotex indoor unit,
Rotex cannot guarantee neither good operation nor
reliability of the system. For those reasons Rotex cannot
give warranty of the system in such case.
Main components
3
4
2
6
1
Installation and operation manual
3
11
10
8
7
5
9
1
Water IN connection
2
Water OUT connection
3
Air purge
4
Flow switch
5
Electrical connections
6
Heater
7
Thermal protector - manual reset
8
Thermal protector - self reset
9
Overcurrent fuse
10
Contactors
11
Thermal fuse
Flow direction
Safety devices
CAUTION
The heater kit air purge connection may not be used for
other purposes.
Thermal protector — The heater in the heater kit is equipped
with a thermal protector. The thermal protector is activated when
the temperature becomes too high. When activated, the
protector has to be reset on the heater of the heater kit by
pressing the red button (for access, remove the cover of the kit).
CAUTION
The electrical box lid must only be opened by a
licensed electrician.
Switch off the power supply before opening the
electrical box lid.
Pressure relief valve — In case valves are installed between the
indoor unit and the heater kit and between the outlet and the
load, a pressure relief valve (field supply) in accordance with
relevant local laws and regulations, and with an opening
pressure of maximum 3 bar must be installed on the water inlet
of the heater kit.
Heater kit for air to water heat pump system
RKBUHAA6V3+W1
4PW58904-1