15
The grill must be disconnected from the gas supply
system when pressure testing of that system at
pressures in excess of 150mbar.
Check the data plate to determine the proper type of
gas before connecting the quick disconnect or piping
from the building gas supply.
An incoming gas pressure test nipple is provided on
the incoming gas manifold for pressure checks.
Minimum incoming gas pressure for Natural Gas is 15
mbar. Maximum incoming gas pressure for Natural
Gas is 35 mbar.
Minimum incoming gas pressure for LP Gas is 25
mbar. Maximum incoming gas pressure for LP Gas is
65 mbar
Burner operating gas pressure can be checked at the
outlet side of the gas valve at the pressure test point.
Burner manifold pressure for Natural Gas must be
8.75 mbar. Burner pressure for LP Gas must be 25
mbar.
To adjust the burner pressure, remove the sealing
screw from the pressure test nipple, connect a
manometer, remove the sealing cap on the gas valve
regulator, turn on the grill, adjust the screw in the
regulator to give the correct pressure, turn off the grill,
refit the regulator sealing cap, remove the
manometer, replace the seal screw in the test nipple
and test for gas leaks.
Gas pressures should be checked by the local Gas
Company or an authorized service agency only.
Test all piping and connections for gas leaks. A rich
soap solution should be used for this purpose. Never
use a flame.
CHANGING TO A DIFFERENT GAS:
Changing from one gas category to another must only
be done by a Qualified Gas Engineer.
To change from category II to III or vice versa, the gas
valve, enrichment tube igniter and orifice must be
changed to that supplied by the Authorized Service
Agency for the gas you are changing to. On
completion of changing these three components, you
should test all joints for leaks, verify that the manifold
pressure is adjusted to the value given in the
specification pages in this manual, and repeat the
burner air adjustment procedure. This is to be found
on the following page in this manual. When the burner
is correctly adjusted, the alternate rating plate decal
must be placed over the existing rating plates to reflect
the new category for which the grill is set.
To change from one gas type to another within the
same category (High to Low Calorific Value Natural
Gas or vice versa), change the orifice to that supplied
by the Authorized Service Agency.
ELECTRICAL INSTRUCTIONS:
All electrically operated appliances must be electrically
earthed in accordance with local codes; or in the
absence of local codes, with the latest edition of
National Wiring Regulations. A wiring diagram is
located on the rear panel of the grill. See rating plate
in rear of grill, or lower front panel for proper voltages.
WARNING: Installer Note - The grill is designed for
connection to a special interlock system. Check
receptacle wiring diagram before connecting. Diagram
located in this manual and on the rear of the grill.
VENTILATION AND CLEARANCE:
One of the most important considerations of efficient
grill operation is proper ventilation and air supply.
Insure the grill is installed so the products of
combustion are removed efficiently and the ventilation
system does not produce drafts that interfere with
proper burner operation.
Proper operation of exhaust fans (proper speed,
rotation and adjustment) is essential. In addition to the
exhaust system the make-up air system (HVAC) for
the kitchen is the air supply for the combustion air for
the burners. Proper incoming air is essential for all
gas operated equipment. Poor incoming make-up will
cause inefficient burner operation, delayed ignition and
possible burner failure. Insure air balancing is
performed on the system as required by the PMS card.
Any ventilation system will break down if improperly
maintained. The duct system, the hood, and the filters
must be cleaned on a regular basis and kept grease
free.
The room containing the grill is required to have a
permanent air vent. The minimum effective area of the
vent shall be 4.5 cm² per kW. Air vents shall be of
such a size to compensate for the effects of any
extract fan in the premises.
