Detroit Radiant Products Company LS3 Series - Manual (Page 40)

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LS3 Series 3.0 Installation • Field Wiring Supply Voltage • Thermostat Connection
Field Wiring Supply Voltage
Before proceeding with electrical connections, ensure that the supply voltage, frequency, phase and
current capacity meet the requirements specified on the rating plate. A dedicated line voltage supply
with properly sized wire should run directly from the main electrical panel to the heater. The power to
the unit must be protected with a circuit breaker appropriate for the load. The unit must be electrically
grounded in accordance with local codes, or in their absence, with the latest edition of the National
Electrical Code, ANSI / NFPA 70 and/or the Canadian Electrical Code CSA C22.1, latest edition.
The heater comes equipped with a supply cord to connect the main power supply. It is located at the
rear of the heater’s burner box, and utilizes a grounding prong. This plug must be connected into an
appropriate outlet receptacle that is properly installed and grounded in accordance to local codes and
ordinances.
The grounding receptacle must be installed within 5 feet of the heater’s service panel, and located in
the space occupied by the appliance. When plugging in the heater, make sure the supply cord is
protected from damage, and keep all cords away from the heater’s surfaces and out of the clearance to
combustible zones (see page 9). When routing the electrical supply for the unit, ensure that it does not
interfere or obstruct the heater’s service panel.
The power supply to the heater must be within +/- 5% of the voltage rating as indicated on the rating
plate of the appliance. If input power does not meet these specifications, contact your utility company.
CAUTION
!
WARNING
!
Electric Shock Hazard
Do not force the three-prong plug into the grounded outlet, modify the plug, or use an
adapter. Never operate this appliance if the cord or plug is damaged.
Thermostat Connection
NOTE: Different thermostats operate according to their particular features. Refer to the thermostat’s
specifications for details.
Prior to connecting the thermostat wire to the heater, check to make sure the wires will be long enough
to allow for the heater to freely expand and contract without causing undue strain on the wires or
terminal. Use 18 gauge wire (or larger) that is suitable for a NEC Class 2 rating for thermostat
connections.
Each LS3 Series heater requires a thermostat rated for 24VAC to operate. The heater comes standard
with a terminal strip for making the thermostatic connection, located on the back panel.