Qmark GFR Series - Fan-Forced Wall Heaters - Manual (Page 5)

8. It may be necessary to readjust thermostat a time or so until
exact comfort level is attained. Rotation in the clockwise
direction will increase the amount of time the heater will pro-
duce heat. Rotation in the counterclockwise direction will
reduce the amount of time the heater is on.
NOTE: For best results, the heater should be left “ON” constant-
ly during the heating season as the thermostat, when properly
set, will maintain the desired temperature. In the full counter-
clockwise position the heater will remain off until the room tem-
perature drops well below freezing.
How To Reset Over -Temperature Safety Control:
This heater is provided with an over-temperature safety control
that will turn the heater off if the heater overheats. If this control
operates, a red warning light, visible through the front of the
grille, will illuminate to alert the owner that the heater is off and
requires attention.
1. Turn the heater off at the thermostat or disconnect power at
the circuit breaker for at least 10 minutes to allow the
heater to cool and the safety control to reset.
2. When the heater has cooled, check to see if the heater is
blocked or excessively dirty as these conditions may cause
overheating. Remove any blockages and/or refer to the
Cleaning Heater
section for cleaning instructions if dirty.
3. Turn circuit breaker on, reset thermostat to desired setpoint,
and verify the heater is operating normally.
4. If the heater malfunctions again and the red light illuminates,
disconnect power at the circuit breaker and have the heater
inspected by a qualified electrician.
Special Note: In addition to the over-temperature safety control,
this heater is provided with a back-up thermal fuse (one shot)
that will permanently shut the heater off if for some reason the
over-temperature safety control should not function as intended.
If this thermal fuse activates, the heater will not reset and must
be repaired by a uualified repair person.
MAINTENANCE
INSTRUCTIONS
It is important to keep this heater clean. Your heater will give you
years of service and comfort with only minimum care. To assure
efficient operation follow the simple instructions below.
User Cleaning Instructions:
1. After the heater has cooled, a vacuum cleaner with brush
attachment may be used to remove dust and lint from exterior
surfaces of the heater including the grille openings.
2. With a damp cloth, wipe dust and lint from grille and exterior
surfaces.
3. Return power to heater and check to make sure it is operat-
ing properly.
Maintenance Cleaning Instructions:
(To be performed only by Qualified Service Personnel)
At least annually, the heater should be cleaned and serviced by
a qualified service person to assure safe and efficient operation.
This should include the removal of the grille and, as necessary
the heater from the backbox to clean residue from the unit. After
completing the cleaning and servicing, the heater should be fully
reassembled and checked for proper operation.
CAUTION - DO NOT CONTINUE TO ATTEMPT TO USE THE
HEATER IF THE SAFETY CONTROL REPEATEDLY OPER-
ATES AFTER BEING RESET. TO DO SO COULD PERMA-
NENTLY DAMAGE THE HEATER OR CREATE A FIRE OR
SAFETY HAzARD.
ALL SERVICING BEYOND SIMPLE CLEANING THAT
REqUIRES DISASSEMBLY SHOULD BE PERFORMED BY
qUALIFIED SERVICE PERSONNEL.
TO REDUCE RISK OF FIRE AND ELECTRIC SHOCK OR
INJURY, DISCONNECT ALL POWER COMING TO HEATER
AT MAIN SERVICE PANEL AND CHECK THAT THE ELEMENT
IS COOL BEFORE SERVICING OR PERFORMING
MAINTENANCE.
DO NOT TAMPER WITH OR BYPASS ANY SAFETY LIMITS
INSIDE HEATER.
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