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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 in-
stallations 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 JM-17, JM-20 and JM-30
Table 2. Supply wires
Heater Input Voltage Phase Amperage Min. 90°C Copper supply
Model kW wire A.W.G. No.
JM-17 1,7 120 1 14,2 12
JM-20 2,0 120 1 16,7 12
JM-30 3,0 240 1 12,5 14