Field Wiring Supply Voltage; Controller/Thermostat Connection - Detroit Radiant Products ACS-40P-120V Manual

ACS Series

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 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.

Controller/Thermostat Connection

NOTE: Different controllers/thermostats operate according to their particular features. Refer to the
controller/thermostat specifications for details.
Each ACS Series heater requires a single stage thermostat rated for 24VAC or 120VAC to operate. The
typical thermostat terminal designations are as follows:
For 24VAC:
R: 24VAC
W: Call for Heat
C: Common for 24VAC
For 120VAC:
Line
Load
24VAC is supplied from a NEC Class 2 field supplied external transformer. Use a thermostat type wire that
has an adequate capacity and temperature rating for the total load and complies with NEC guidelines for
120V wire size. Follow the field wiring diagram in Figures 3.15 and 3.16 for wiring to a typical single-stage
thermostat.
3.0 Installation
• Field Wiring Supply Voltage
CAUTION
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25
• Thermostat Connection