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3.4. Installation of the Control Unit and Sensors
The control unit includes detailed instructions
•
for fastening the unit on the wall and installing
the humidity sensor.
Install the sensor (WX248), which comes with
•
the heater, as shown in figure 6.
Do not place the supply air vent so that the air
flow cools the temperature sensor. Figure 5.
3.4.1. Suitable control units
Harvia CX30C-U1
•
Harvia CX30C-U3
•
See more detailed information from table 3.
Heater grade setting of the control unit: See table 4.
Please read the instructions of the control unit.
3.5. Electrical Connections
The heater may only be connected to the electrical
network in accordance with the current regulations
by an authorised, licensed professional electrician.
The wiring diagrams are included in the control
unit's installation instruction.
Further instructions concerning exceptional installa-
tions can be obtained from local electrical authorities.
1. Remove heater from carton and place in
proper location in sauna room. Observe proper
clearances as per figures 4 and 6.
2. See applicable wiring diagram for heater model
(figure 8, see control unit manual for detailed
instructions how to connect the heater and
the control unit). Heater must be permanently
installed by using seal tight conduit between
the heater and the wall of the sauna room
(pigtails or plugs are not allowed in the sauna
room). Wiring must be done by a licensed
electrician, who must follow wiring diagram
provided and adhere to local codes. Use proper
AWG rated wire size and use copper wire
suitable for 194 °F (90 °C) within sauna walls.
Use grounding terminals provided in sauna
heater and control unit to properly ground the
equipment as per NEC and local codes.
3. Inside the heater box there are two signs.
Please place the metal "CAUTION" sign on
the interior wall of the sauna room directly
above the heater in a visible place (screws and
nails included). Place the metal "WARNING"
sign outside, on the door of the sauna room.
"MAINTENANCE INSTRUCTIONS" are at the
end of this manual.
3.6. Automatic filling
Connect the heater to cold water mains using a
flexible hose. Make sure that the connection has a
shut-off valve and vacuum breaker. See figure 7.
The sauna and/or washing facilities should have a
floor drain in case of hose damage or leaks. Follow
the local installation regulations.
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3.7. Installing the Heater
See figure 9.
Connect cables to the heater.
•
Connect the heater to cold water mains using a
•
flexible hose (automatic filling).
Place the heater and adjust the heater vertically
•
straight using the adjustable legs.
3.8. Electric heater insulation resistance
When performing the final inspection of the electrical
installations, a "leakage" may be detected when meas-
uring the heater's insulation resistance. The reason
for this is that the insulating material of the heating
resistors has absorbed moisture from the air (storage
transport). After operating the heater for a few times,
the moisture will be removed from the resistors.
Do not connect the power feed for the heater
through the RCD (residual current device)/GFI
(Ground Fault Interrupter)!
3.9. Replacing the Heating Elements
See figure 10.
3.10. Resetting the Overheat Protectors of
the Heater and the Water Reservoir
See figure 11. If the temperature of the sauna room
becomes dangerously high, the overheat protector
(1) will permanently cut off the supply of the heater.
The overheating protector (1) can be reset after
the heater has cooled down. Please check that the
stones are piled properly and the sensor is installed
according the installation instructions. See also the
installation instructions for control unit.
If water reservoir empties during the use, the
overheat protector (2) cuts off the steamer power.
The overheating protector (2) can be reset after the
steamer has cooled down.
The reset button is located under the heater.
Overheat protector of the device can go off
!
also at temperatures below -5˚C / 23˚F
(storage, transport, environment). Before
installation take the device to the warm environ-
ment. The overheat protector can be reset when the
temperature of the device is approx 18˚C / 64˚F.
The overheat protector must be reset before using
the device.
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