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Installation
11
Gas Connections
PRESSURE REGULATION AND TESTING
The gas pressure to the appliance must be rated
for each appliance while the burners are on. A suf-
ficientgaspressuremustbepresentattheinletto
satisfy these conditions. Refer to the table below
for correct gas pressure.
Each appliance has been adjusted at the factory
to operate with the type of gas specified on the rat-
ing plate attached to the right side of the ap-
pliance.
Each oven is supplied with a regulator to maintain
the proper gas pressure. The regulator is essen-
tial to the proper operation of the oven and
should not be removed.
DO NOT INSTALL AN ADDITIONAL REGULATOR
WHERE THE UNIT CONNECTS TO THE GAS
SUPPLY UNLESS THE INLET PRESSURE IS
GREATER THAN 14” W.C. (1/2 PSI) (37mbar).
The oven and its individual shutoff valve must be
disconnected from the gas supply piping system
during any pressure testing of that system at test
pressuresinexcessof1/2psig(3.45kPa).
The oven must be isolated from the gas supply
piping system by closing its individual manual
shutoff valve during any pressure testing of the
gas piping system at test pressures equal or less
than 1/2 psig (3.45kPa).
Prior to connecting the appliance, gas lines
should be thoroughly purged of all metal filings,
shavings, pipe dope, and other debris. After con-
nection, the appliance must be checked for cor -
rect gas pressure.
U.S. and Canadian Installations
Installation must conform with local codes, or in
the absence of local codes, with the National Fuel
Gas Code, N FPA54/ANSI Z223.1 ---Latest Edition,
the Natural Gas and Propane Installation Code
CAN/CSA-B149.1.
General Export Installations
Install atio n must c onf orm with Local and National
instal lati on standards. Local installati on co des and/
or requir ements may vary. If y o u have any questi o ns
regarding the proper installation and/or operation of
your appl i ance, please contact y our l oc al di stributo r.
If yo u d o n ot hav e a local di stri butor, pl ease call
Blodgett Combi at 0011-802-860-3700.
GAS PRE SSURE
Gas
T
Inlet
P
Orifice Size at Sea Level Manifold Pressure
Type Pressure
Hot Air Steam Hot Air Steam
U.S. and C an ad i an Inst allat ions
Natural 5 --- 14 ” W.C . 1/16”
.0625” dia
#58
.042” dia
3.5” W.C. 3.5” W.C.
Propane 11---14” W.C. #62
.0380” dia
#70
.0280” dia
10” W.C. 10” W.C.