INSTALLATION
WARNING:
THESE PROCEDURES MUST BE FOLLOWED BY QUALIFIED PERSONNEL OR
WARRANTY WILL BE VOIDED.
GENERAL:
THE UNIT, WHEN INSTALLED, MUST CONFORM WITH LOCAL CODES, OR IN THE ABSENCE OF
LOCAL CODES, WITH THE NATIONAL FUEL GAS CODE ANSI Z223.1-LATEST EDITION. CANADIAN
INSTALLATION MUST COMPLY WITH CAN/CGA-B149.1 NATURAL GAS INSTALLATION CODE,
CODE CAN/CGA-B149.2 PROPANE INSTALLATION CODE.
These models are design certifed for operation on Natural and Propane gases. The Serial Plate is located
under the broiler grease drawer at the front, towards the left.
ORIFICE CHART
Total
Burner
Pilot
Pressure
Gas
Rating
Orifice
Orifice
Regulator
Natural
3 @
10,666 BTU/Hr.
No. 53 (P/N 1008753)
.0240 (P/N 1161263)
4" W.C.
Propane
3
@
10,666 BTU/Hr.
No. 63 (P/N 1008763)
.0145 (P/N 1161262)
10" W.C.
Minimum clearances from combustible construction:
MODELS
CLEARANCE
SIDES
BACK
MRA-32C
1IN.
1IN.
MRA-32W
1IN.
3% IN.
MRA-32, MRA-36, MRA-60
6 IN.
6 IN.
NOTE: For Model Nos. MRA-32C and MRA-32W a 6" clearance should be provided at the right side, since it is
necessary on all models to remove the body side to gain access to the regulator and 1/8 NPT pressure test tap.
An adequate gas supply is imperative. Undersized or low pressure lines will restrict the volume of gas required for
satisfactory performance. A pressure regulator, which is provided with each unit, is set to maintain a 4" W.C.
manifold pressure for natural gas and a 10" W.C. manifold pressure for propane gas. However, to maintain these
conditions the pressure on the supply line, when all units are operating simultaneously, should not drop below 7"
W.C. for natural gas or 11" W.C. for propane gas.
All pipe joints should be tested for leaks with a soap and water solution before operating the unit. The test
pressure should not exceed 14" W.C.
CAUTION:
THIS APPLIANCE AND ITS INDIVIDUAL SHUTOFF VALVE MUST BE DISCONNECTED
FROM THE GAS SUPPLY PIPING SYSTEM DURING ANY PRESSURE TESTING OF THAT
SYSTEM AT TEST PRESSURES IN EXCESS OF 1/2 PSIG (3.45 kPa) (13.84 IN. W.C.).
THIS APPLIANCE MUST BE ISOLATED FROM THE GAS SUPPLY PIPING SYSTEM BY
CLOSING ITS INDIVIDUAL MANUAL SHUTOFF VALVE DURING ANY PRESSURE TESTING
OF THE GAS SUPPLY PIPING SYSTEM AT TEST PRESSURES EQUAL TO OR LESS THAN
1/2 PSIG (3.45 kPa) (13.84 IN. W.C.).
The unit must be installed in such a manner that the flow of combustion and ventilation air are not
OBSTRUCTED. An adequate air supply for combustion is obtained at the right rear of the unit. These openings
must NOT be OBSTRUCTED in any way while the unit is operating. The top and right side must be accessible
for service.
EXHAUST FANS AND CANOPIES:
Be sure to inspect and clean ventilation system according to the ventilation equipment manufacturers instructions.
Canopies are set over ranges, ovens, etc., for ventilation purposes. It is recommended that a canopy extend 6" past
appliance and be located 6' 6" from the floor. Filters should be installed at an angle of 45 degrees or more with the
horizontal. This prevents dripping of grease and facilitates collecting the run-off grease in a drip pan, usually
installed with a filter. A strong exhaust fan tends to create a vacuum in the room and may interfere with burner
performance or may extinguish pilot flames. Fresh air openings, approximately equal to the fan area, will relieve
such vacuum. In case of unsatisfactory performance on any appliance, check with the exhaust fan in the "OFF"
position.
COMPACT INFRA-RED BROILER
SECTION ONE — INSTALLATION
PAGE 2
Litho in U.S.A.
Rev. 7-81