14
Connect Gas Piping:
Connect the gas piping to the gas inlet of the valve on the right side of the unit.
Gas piping connections require an approved pipe joint compound that must resist the
action of Natural and Propane/LP Gas. Please refer to the cautionary remarks noted at
the beginning of this manual. If local codes permit the use of a flexible metal gas
connector, it must be of the type approved for this use by displaying a certification symbol
in accordance with ANSI Z21.24 (Most Current Edition) covering Appliance Connectors or
Corrugated Metal Tubing and Fittings;
- OR -
If local codes permit the use of flexible gas connector of other than all-metal construction,
it must be of the type approved for this use by displaying a certification symbol in
accordance with ANSI Z21.45 (Most Current Edition) covering Assembled Flexible
Appliance Connectors of other than All-Metal Construction.
Gas Supply:
The template (See Figure 3) supplied with your unit shows a recommended location for
the gas supply piping. Gas piping must be installed in accordance with all applicable
building and plumbing codes. For Propane Units., Gas supply Line Pressure MUST NOT
EXCEED 13 IN. W.C..It is recommended that a gas shut off valve be installed upstream of
the heating unit, even if local codes do not require it. It is recommended that a sediment
trap or "drip leg" be installed in the gas piping just before the piping enters the unit.
(See Figure 9). Refer to the most current edition of the National Fuel Gas Code,
ANSI Z223.1 (Most Recent Edition), for details on gas piping installation.
Pressure Testing of the Gas Supply Piping System:
Test of gas supply piping system at pressures in excess of _ PSIG (3.5 kPa):
When carrying out tests at this range of pressures, the appliance and its appliance main
gas valve must be disconnected from the gas supply piping system.
Tests of gas supply piping system at pressures equal to or less than _ PSIG (3.5 kPa):
When carrying out tests at this range of pressures, the appliance must be isolated from
the gas supply piping system by closing the shut off valve if it has been installed upstream
the heater. Otherwise, the appliance and its appliance main gas valve must be
disconnected from the gas supply piping system. (See figure 9).