NARVI SMOOTH 9kW, Installation And Instruction Manual

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3. INSTALLATION:
3.1 Installation instructions for the heater, the temperature sensor and the control unit
- Connection of the sauna heater to the power supply may only be carried out by an
authorised electrician in accordance with the valid regulations.
- A rubber-sheathed cable of type H07RN-F or similar must be used as the connection cable.
- If you want to make use of the temperature control feature, we recommend using a rubber cable
with at least seven wires. The cross-section of the cable and the fuse size are presented in Table 1.
3.11 Connection the power supply cable
- Open the control box as shown in figure 2.
- Connect the power cable. Do not connect voltage to the heater before adding the temperature
sensor and the controller.
3.12 Installing the temperature sensor
- Install temperature sensor to the wall, above the sauna heater so it is located 100mm below
the ceiling. (see Fig. 1)
- The supply air valve must not be located closer than 1000mm from the temperature sensor. If the
valve is located 500-1000mm from the sauna heater, an adjustable valve is needed and set to channel
the air away from the sauna heater. If the supply air valve is too close to the temperature sensor,
the heater will receive false data and it might result in overheating the sauna heater.
- If the heater is installed more than 200mm away from the wall, the temperature sensor must be
placed into the ceiling 100mm away from the heaters outer surface.
- Install the temperature sensor on the wall with the screws included in the delivery
(2 pcs. Ø 2,9 x 16).
- The wiring for the temperature sensor can be embedded.
- Connect the sensor to the circuit plate.
- Connect the end of the conductor, the one with no connector in place, to the temperature sensor.
You can cut the conductor to a suitable length.
- See 6. Air exchange for the steam room
Figure 1. Minimal safety
clearances for the heater.
Figure 2.
D min
A min
min
600
B min
max 900
100
C min
A min
A min
A min
3.13 Installing the control unit
- The control unit can be installed inside or outside the steam room. The control unit is
moisture-proof, so it can be installed in the wash room. It is recommended to install the controller
in the sauna room. This is because of safety reasons, and means that the sauna room will be
checked when setting heater power on.
- The installation height of the control unit is a maximum of 90 cm and a minimum of 60 cm
from the side of the heater (see Fig. 1).
- Attach the control unit to the wall using screws (2 x 3.5 *15).
- Connect the control unit to the circuit plate.
- The control unit cable is 3.0 metres long. A cable of maximum length 10 metres is available by special
order. It is not recommended to shorten or extend the controllers cable. The excess cable must not be
inserted into the heater’s connecting box. Wire is recommended to install surfacemounted. When
embedding the controllers cable, it is recommended to use a protective pipe around the cable, Ø 20.