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INSTALLATION AND OPERATION INSTRUCTIONS
CAUTION:
To prevent electric shock disconnect power to heater at main service before
wiring or service.
CAUTION:
Do not obstruct the front of the heater with curtains, furniture, doors,
etc. Do not place heaters under towel racks. Proper operation of the
heater requires a free flow intake and exhaust of air.
Warning:
To insure proper operation, all heaters must be thermostatically
controlled.
GENERAL
These heaters are designed for 2 X 4 recessed or surface mount installation. The heaters may be wall
mounted in a vertical or horizontal position and ceiling mounted. The minimum clearance from wall box to
adjacent wall or floor is 6 inches. These heaters must not be installed without wallbox model no. 30WB.
1.Position wall box a minimum of 6 inches from ajacent wall and floor. Secure to wall stud with nails or
screws. Wall box must be installed with front edge flush with finished wall surface. See figure 1.
2.Remove knockout in wall box for power source, and install cable clamp.
3.Insert supply cable through clamp allowing 6-8" for field wiring.
NOTE:
Field wiring must enter wall box where the corner wiring compartment is located.
303, 304, 305, CRH, CRQ, CFA SERIES
INSTALLATION OF WALL BOX 30 WB
FOR NEW CONSTRUCTION
1
Form 9940
Rev. 01/06
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Summary of Contents for Mor Electric Heating 303 SERIES
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Page 1: Installation And Operation Instructions
INSTALLATION AND OPERATION INSTRUCTIONS 303, 304, 305, CRH, CRQ, CFA SERIES CAUTION: To prevent electric shock disconnect power to heater at main service before wiring or service. CAUTION: Do not obstruct the front of the heater with curtains, furniture, doors, etc. - Page 2 INSTALLATION OF WALL BOX 30WB FOR EXISTING CONSTRUCTION 1. Carefully cut a hole measuring 9 ¼” wide by 12 ¼” long in wall. Wall box 30WB must be attached to a wall stud on one edge. Minimum clearances of 6" must be maintained to adjacent surfaces. Attach wall box and secure power cable as in new construction.
- Page 3 OPERATION 1.Turn on the power supply to heater. 2.Rotate thermostat knob fully clockwise. This heater is equipped with a fan delay, so the fan will be delayed 45-60 seconds after the element is energized. 3.Allow the room to reach desired temperature, then rotate thermostat knob counter clockwise until thermostat clicks.
- Page 4 Form 9940 Rev. 01/06...
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