Electrical Connections; Electric Heater Insulation Resistance; Testing Of Sauna Heater - Harvia KV-45 Instructions For Installation Manual

3.5. Electrical Connections

The heater may only be connected to the electrical
network in accordance with the current regulations by
an authorised, professional electrician.
Refer to the chart in table 2 to determine the wire
size and circuit protection required. The complete sauna
system should be properly grounded as per NEC or as
required by local codes. A grounding terminal is provided
in the wiring compartment of each heater, complate
the wiring according to the appropriate wiring figure 10.
See table 1 for required clearances. Any wiring within
internal Sauna walls must be rated for 90°C (194°F)
and copper wire must be used. Run wire through seal
tight flex conduit from wall to heater and connect to
junction box.
Note! If connection to heater will be made at a later
time, bring flex into Sauna room 4–6" (100–150 mm)
from floor, and leave 3' (900 mm) of flex for hookup
(can be cut to right lenght later).
Further instructions concerning exceptional installations
can be obtained from local electrical authorities.

3.6. Electric heater insulation resistance

When performing the final inspection of the electrical
installations, a "leakage" may be detected when
measuring 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.
Note! A ground fault interrupter (GFI) shoud not be
installed in and does not belong in a Sauna.

3.7. Testing of Sauna heater

Before testing heater, fill rock cavity with igneous stones
provided with heater and fasten rock guard at top of
heater. See item 1.1." Piling of the Sauna rocks".
1. After Sauna heater has been properly wired, according
to appropriate wiring diagram and local codes, turn Sauna
breaker on in the main breaker panel. (Note! Electrician
must label "Sauna" breaker.)
2. Turn thermostatic (heat) control to on position (this is
located on your heater). Set timer to 10 or 15 minutes.
3. Within 5 minutes, you should be able to feel heat from
heater elements when holding your hand over heater.
4. if Sauna does not heat, refer to troubleshooting
information.
5. It is normal for smoke to appear during the first
heating, as protective element coating needs to burn
off. TURN SAUNA ON FOR 1 HOUR
BEFORE USING THE FIRST TIME,
TO ELIMINATE SMOKING.
Figure 10. Electrical connections of the heaters
240V 1 phase KV- sauna heater with built in controls
Heater Input Voltage
Model kW
KV-45-1 4,5 240
KV-60-1 6,0 240
KV-80-1 8,0 240
208V 3 phase KV- sauna heater with built in controls
Heater Input Voltage
Model kW
KV-45-3 4,5 208
KV-60-3 6,0 208
KV-80-3 8,0 208
Tables 2. Supply wires.
KV-45, KV-60 and KV-80
Phase Amperage Min. 90°C Copper supply
wire A.W.G. No.
1 18,8
1 25,0
1 33,3
Phase Amperage Min. 90°C Copper supply
wire A.W.G. No.
3 12,5
3 16,7
3 22,2
10
10
8
14
12
10
9.