Step 5: Gas Requirements & Hookup - Thermador PRSG304 Installation Instructions Manual

Verify the type of gas being used at the installation site. As
shipped from the factory, all units are configured for use on
natural gas. For use with propane gas, the unit must be
converted. Field conversion for use with propane must
only be done by qualified service personnel. Contact the
dealer when the unit was purchased or Thermador (800/735-
4328). The field conversion kit for all Professional Series
ranges is Thermador Model PROLPKIT, PN 35-00-549.
CAUTION:
When connecting unit to propane gas, make
certain the propane gas tank is equipped with
its own high pressure regulator in addition to
the pressure regulator supplied with the
appliance. The pressure of the gas supplied to
the appliance regulator must not exceed 14"
water column.
Natural Gas Requirements:
Inlet Connection: 1/2" N.P.T. (Minimum 5/8" dia.
flex line.)
Supply Pressure: 6" to 14" water column.
Manifold Pressure: 5" water column
Propane Gas Requirements:
Inlet Connection: 1/2" N.P.T. (Minimum 5/8" dia.
flex line.)
Supply Pressure: 11" to 14" water column.
Manifold Pressure: 10" water column
For Massachusetts Installations:
1. Shut-off valve must be a "T" handle gas cock.
2. Flexible gas connector must not be longer than 36 inches.
3. Not approved for installation in a bedroom or a bathroom unless unit is direct vent.
CAUTION:
"The appliance must be isolated from the gas supply piping system by closing its individual manual shut-
off valve during any pressure testing of the gas supply piping system at test pressures equal to or less
than 1/2 psig (3.5kPa.)."
"The appliance and its individual shut off valve must be disconnected from the gas supply piping system
during any pressure testing of the system at test pressures in excess of 1/2 psig (3.5kPa.)."
When checking the manifold gas pressure, the inlet pressure to the regulator should be at least 6.0" W.C.
for natural gas or 11.0" for propane.
Do not attempt any adjustment of the pressure regulator.
STEP 5: GAS REQUIREMENTS AND HOOKUP
HOOK UP
• A manual gas shut-off valve must be installed
external to the appliance, in an accessible location
from the front, for the purpose of shutting off the gas
supply. The supply line must not interfere with the
back of the unit. Make sure the gas supply is turned
off at the manual shut-off valve before connecting the
appliance.
• The range is supplied with its own pressure regulator
that has been permanently mounted within the range
body.
• Use 5/8" flex line to connect between the gas supply
and the appliance manifold pipe, which exits the
upper left rear of the appliance. The appliance
manifold pipe connection is 1/2" NPT. (See Fig. 3a,
3b, or 3c.) Use caution to avoid crimping the 5/8" flex
line when making bends.
• The gas supply connections should be made by a
competent technician and in accordance with local
codes or ordinances. In the absence of a local code,
the installation must conform to the National Fuel
Gas Code ANSI Z223.1, Current Issue.
• Always use pipe dope or Teflon tape on the pipe
threads, and be careful not to apply excessive pres-
sure when tightening the fittings.
• Turn on gas and check supply line connections for
leaks using a soap solution. Do not use a flame of
any sort to check for leaks.
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