Garland GT SERIES HEAVY DUTY GAS COUNTER EQUIPMENT - Manual (Page 11)

Page 11
INSTALLATION
Ventilation
Ventilation requirements may be subject to local
building and fi re codes. Consult local authorities
having jurisdiction.
Counter equipment must be installed in a location in which
the facilities for ventilation permit satisfactory combustion
of gas and proper venting. Proper ventilation is imperative
for good operation of the appliance. The ideal method
of ventilating counter equipment is the use of a properly
designed ventilating canopy, which should extend at least
6”/152mm beyond all sides of the appliance (except against
the wall if the canopy is a wall installation). This is usually part
of a mechanical exhaust system.
Air Supply
1. It is necessary that suffi cient room air ingress be allowed
to compensate for the amount of air removed by any
ventilating system. Otherwise, a subnormal atmospheric
pressure will occur, aff ecting the appliance operation
adversely and causing undesirable working conditions.
2. Appliances shall be located so as not to interfere with
proper circulation of air within the confi ned space. All gas
burners and pilots require suffi
cient air to operate.
3. Large objects should not be placed in front of the
appliance which might obstruct the air fl ow through
the front. Do not obstruct the fl ow of combustion and
ventilation air.
4. Do not permit fans to blow directly at the appliance, and
wherever possible, avoid open windows adjacent to the
appliance sides and back; also wall type fans which create
air cross-currents within the room.
ADJUSTMENTS
Burner Adjustments – All Models
1. Before making any adjustment, turn all gas valves
to “OFF”. Remove the burner tie wires, if not already
removed. Be sure all piping is gas tight and that air is
purged from lines.
2. All units are shipped from factory at burner ratings set
for the gas specifi ed on the rating plate at normal gas
pressure. The only adjustment necessary is for that
governing air.
Air Adjustment: If necessary, the air is adjusted by rotating
the air shutter on burner. The burner must have enough air
that the tips of the fl ames are not yellow, but not so much air
that the fl ames will lift off the burner ports. Securely tighten
air shutter screw so air shutter cannot be moved.
NOTE: All adjustments must be performed by a qualifi ed gas
technician.
Part # 4531237 Rev 2 (09/09/13)