1
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 INSTAL-
LATION 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/Hi-. No. 53 (P/N 1008753) .0240 (P/N 1161263) 4” W.C.
Propane 3 @ 10,666 BTU/Hi-. No. 63 (P/N 1008763) .0145 (P/N 1161262) 10” W.C.
Minimum clearances from combustible construction:
MODELS ! CLEARANCE
SIDES BACK
MRA-32C 1 IN. 1 IN.
MRA-32W 1 IN. 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
118NPT 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 pro-
pane 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 l/2 PSIG (3.45 kPd (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 112 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 facili-
tates 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 m U S A
Rev 7.91
