Qmark MUH35C User Manual

Page 3

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Connect the field wiring to the heater wiring as shown in the

wiring diagram.
After connecting the wiring, replace the wiring compartment

cover making sure none of the wires are pinched between the

cover and the heater. Tighten the screws securely.

Optional Plug-in Connection

If this heater is intended to be converted to a cord-connected

model, the QMark model number PHCS1B cord assembly must

be used. Refer to the instructions packed with the cord assem-

bly for installing the cord onto the heater.

HEATING OPERATION

To operate the heater, first select either high or low position on

the heat selector switch, then turn the thermostat knob as far as

it will go in the clockwise direction. The indicator light will come

on and remain on as long as the heater is in the operating

mode. When the room temperature reaches the desired level,

slowly turn the thermostat knob counterclockwise until the ther-

mostat clicks. The indicator light will remain on. The heater will

automatically cycle off and on as needed to maintain desired

temperature. To shut heater off, turn thermostat knob as far as it

will go in the counterclockwise direction until the indicator light is

off.
The fan selector switch allows continuous or cycling fan opera-

tion by selecting either the “ON” or “Auto” position, respectively.
Automatic Fan Delay: This heater incorporates an automatic

fan delay. When the thermostat calls for heat, fan action is

delayed momentarily until the heating element is warm. When

the thermostat is satisfied, the fan continues to operate until the

heating element is cool. This action prevents circulation of cold

air, and avoids exposing unit to residual heat, thus providing

higher comfort level and prolonged element life.

CLEANING

Turn thermostat off. Disconnect electrical power before cleaning

heater. Use a soft cloth for dusting. For cleaning use only a

damp rag and nonabrasive dish detergent. Do not use abrasive

or chemical cleaners as these may harm the finish.
If heater is used in a very dusty location, use a vacuum cleaner

dust brush to remove dust and other foreign material from the

grilles.

SERVICE

This heater does not require any routine maintenance other than

occasional cleaning to prevent clogging of intake grille opening.

To clean air intake grille, use vacuum with brush attachment or

high pressure air. The motor is permanently lubricated.
Do not operate the heater if the heater malfunctions or has been

damaged in any manner.
Call the toll-free number listed for assistance.

To Reset Safety Thermal Limit Control

Your heater is equipped with a manual reset safety thermal limit

control that will automatically turn the heater off to prevent a fire

if the heater overheats. This control is located on front of the

heater just above the thermostat and is marked “PUSH TO

RESET”. To reset, allow the heater to cool then simply push the

red button in until it snaps. The heater should immediately

return to normal operation.

OPERATION OF THE SAFETY THERMAL LIMIT CONTROL

INDICATES THE HEATER HAS BEEN SUBJECTED TO

SOME ABNORMAL CONDITION. IT IS RECOMMENDED

THAT THE HEATER BE CHECKED BY A REPUTABLE ELEC-

TRICIAN OR REPAIR SERVICE TO INSURE THE HEATER

HAS NOT BEEN DAMAGED.

THE MUH35C MAY BE CONVERTED TO A CORD CON-

NECTED MODEL ONLY BY THE ADDITION OF THE QMARK

MODEL NUMBER PHCS1B CORD ASSEMBLY. THE USE OF

ANY OTHER CORD MAY RESULT IN A FIRE OR ELECTRI-

CAL SHOCK.

3

Connectors, cable, and hardware used to wire the MUH35C

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