Schwank IT(U) - Manual (Page 24)

GP-MSEM-BX-06A
SEM(U) / IT(U) Manual
RD: Aug 2006
RL: 06A
KH
Each individual tube heater requires 120
Volts 60 Hz electrical power sized for
145VA. The heater can be controlled by
a line voltage thermostat or "ON/OFF"
switch.
IMPORTANT:
Do not install the thermostat in the direct
radiant stream.
The voltage at the spark ignition control
is 110V. Note that proper functioning
of the heater will be adversely affected if
the input voltage varies by more than +/-
10%
WARNING:
The heater must be electrically grounded
in accordance with the current Electrical
Code.
It is good wiring practice and the installers
responsibility to ensure that correct wiring
polarity is maintained throughout installation.
The Fenwal DSI control is polarity sensitive
and WILL malfunction if the polarities are
reversed. The black wire MUST be wired to
Hot, and the white wire MUST be wired to
Neutral. If the polarity is reversed the module
will not function correctly and will eventually
burn out.
16. HIGH ALTITUDE INSTALLATIONS
Canada: All of the SEM(U) / IT(U) radiant
tube heaters are approved for altitudes zero
to 4500 feet above sea level and do not re-
quire de-rating. USA: If a heater is to be installed at alti-
tudes above 2000 ft, the input must be re-
duced by 4% per 1000 ft. If your local util-
ity de-rates the heat content in the gas sup-
ply, no modification of the heater is re-
quired. If the gas supply is not de-rated, the
orifice must be changed according to the
chart. Check with your local utility regard-
ing de-rating of this appliance.
15. ELECTRICAL AND THERMOSTAT WIRING
(SEE WIRING DIAGRAM)
Wiring must be done in accordance with
local codes. The total load of all heaters must
be considered in determining the required contact rating of the controlling thermostat
or switch.
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