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2.9 ELECTRICAL REQUIREMENTS AND THERMOSTAT CONTROL
All electrical installations must meet local and the latest edition Electrical Code PART 1 CSA C22.1
in Canada and ANSI/NFPA N0 70 in the U.S.A.. Single heater requires 24 Volt, 60 Hz electrical
transformer sized at 40 VA. If multiple heaters are connected to a single transformer, the proper trans-
former is 24 Volt, 60 Hz, sized at 40 VA for the first heater, and 20 VA each for all subsequent addi-
tions. For example, four heaters wired together (parallel), require a transformer of 100 VA. It is not
recommended to install more than 12 heaters per zone. PROPER WIRING POLARITY MUST BE
MAINTAINED, particularly when grouping the heaters in a zone.
Total wiring distances of up to 200' must use minimum 16 gauge electrical wire, and wiring distances
of over 200' must use minimum 14 gauge electrical wire. The heater must be electrically grounded in
accordance with the local electrical code. Malfunction of the heating system will result if the voltage
varies by more than +10% or -10%.
The heater can be controlled by a line voltage thermostat, a TrueTemp thermostat or "off-on" switch.
Total load of all heaters must be considered in determining the required contact rating of the control-
ling thermostat or switch.
3. INSTALLATION PROCEDURES
A. Properly install gas line as outlined in section 2.7, page 3.
B. Properly connect the ignition control assembly to the heater.
C. Mount heaters by using non-combustible mounting hardware as illustrated in section 8.2, page 7.
Observe the minimum clearances as outlined in sections 8.3.
D. Connect heater to the main gas line. It is recommended to use a 1/2" flexible connector to absorb
gas line expansion and any building vibration (available as option from Schwank Ltd.).
E. Mount thermostat at desired location, away from direct infra-red rays of heater and not on cold
wall without sufficient insulation backing. Install exhaust fan, air switch and transformer, as per
section 2.6, page 3 and section 2.9, page 4.
F. Check gas line for leakage by using soap test or gas meter test. Ensure gas pressure meets the re-
quirements outlined in section 2.8, page 3.
WARNING:
When testing the main gas line pressure, ensure the gas shut-off valve is "OFF",
otherwise damage to the combination gas valve will result.
G. Ensure proper electrical rating in the system by checking voltage at ignition module terminals. To
avoid system malfunction, the voltage range must be within 21.6 volts to 26.4 volts.
H. Test fire the heating system by following the lighting instructions as shown on the next page and
on heater.
Page 4
GP-MECX-CX-1A
eco-X / IL-X Manual
RD: SEPT 2005
RL: 1A
BA
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