Gas Supply; Gas Pressure Check / Output / Ef Ciency; Gas Pressure Requirements; Bristol - Pacific energy BRISTOL Installation And Operating Instructions Manual

Servicing of the appliance can be performed from the front of the unit by removing the front trim, or by
removing the gas tray from the unit.
Caution: The gas line should be installed by a quali ed service person in accordance with all building codes.
This section is intended as a guide for quali ed technicians installing this appliance. Consult local and/or
national building codes before proceeding.
• Gas supply line connection is located on the side of the insert. Gas connection accepts a 3/8" N.P.T. tting.
Correct gas line diameter must be used to assure proper operation and pressure.
• The replace input rating is shown in the chart below.
• A drip leg must be installed in the gas supply line going to the gas control valve to minimize the possibility of
any loose scale or dirt within the gas supply line from entering the control valve.
• It is essential that a union or anged connection be installed just upstream of the valve and inside the
control compartment to allow for repair or replacement of the gas valve.
Check local codes for additional requirements.
Turn on the gas supply and check that all connections are tight and leak free.
WARNING: The gas tray including gasket must be reinstalled after conversion/installation
or servicing has been completed.
Gas Pressure Check / Output / Efficiency
Please refer to following page for gas pressure testing procedure.

Gas pressure requirements

Input Pressure
Minimum
Maximum
Manifold Pressure
High
Low
5055.633-B

Gas Supply

Natural Gas Propane
5.0" WC 11.0" WC
13.9" WC 13.9" WC
3.5" WC 10" WC
1.6" WC 6.4" WC

Bristol

Gas Orifice
NG 1.98mm
LP 1.25mm

Bedford

Gas Orifice
NG 2.55mm
LP 1.50mm
20
Output AFUE
18,000 btu/hr 76%
17,000 btu/hr 76%
Output AFUE
30,000 btu/hr 75%
26,000 btu/hr 75%
BRSL.BODYB
050216-44
BDFD.BODYB