Blodgett BC-20G - Manual (Page 13)

9
Installation
Gas Connection
PRESSURE REGULaTIOn and TESTInG
The gas pressure to the appliance must be rated for each
appliance while the burners are on. A sufficient gas pres-
sure must be present at the inlet to satisfy these condi-
tions. Refer to the table below for correct gas pressure.
Each appliance has been adjusted at the factory to oper-
ate with the type of gas specified on the rating plate at-
tached to the right side of the appliance.
Each oven is supplied with a regulator to maintain the
proper gas pressure. The regulator is essential 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 discon-
nected from the gas supply piping system during any
pressure testing of that system at test pressures in ex-
cess of 1/2 psig (3.45kPa).
The oven must be isolated from the gas supply piping
system by closing its individual manual shutoff valve dur-
ing 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 connection, the appliance
must be checked for correct gas pressure.
U.S. and Canadian Installations
Installation must conform with local codes, or in the ab-
sence of local codes, with the National Fuel Gas Code,
NFPA54/ANSI Z223.1-Latest Edition, the Natural Gas
and Propane Installation Code CAN/CSA-B149.1.
General Export Installations
Installation must conform with Local and National instal-
lation standards. Local installation codes and/or require-
ments may vary. If you have any questions regarding the
proper installation and/or operation of your appliance,
please contact your local distributor. If you do not have a
local distributor, please call Blodgett Combi at 0011-802-
658-6600.
GaS PRESSURE
Gas Type Inlet Pressure Orifice Size at Sea Level Manifold Pressure
Hot Air Steam Hot Air Steam
U.S. and Canadian Installations
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.