Propane Gas Installations - Daikin DFG Series Installation Instructions Manual

• Listed gas appliance connectors used in accordance
with the terms of their listing that are completely in
the same room as the equipment
• In the prior two methods above the connector or
tubing must be protected from physical and ther-
mal damage. Aluminum alloy tubing and connectors
must be coated to protect against external corrosion
when in contact with masonry, plaster or insulation
or are subject to repeated wettings by liquids (water
- not rain water, detergents or sewage).
GAS INLET LOCATION (3/4" NPT)
46-1/10" 46-1/10" 46-1/10"
74-11/12"
DOOR
PROVIDE
CLEARANCE
FOR REMOVAL OF
ACCESS PANELS
MANUAL
SHUT OFF
VALVE
PROPER PIPING PRACTICE
NOTE: The unit gas supply entrance is factory sealed with plugs.
Keep plugs in place until gas supply is ready to be installed. Once
ready, replace the plugs with the supplied grommets and install
gas supply line.
HOOD LOCATED
INSIDE HEAT SECTION
DURING SHIPPING
DRIP LEG
GROUND
JOINT
UNION
Gas Piping Checks
To prevent property damage or personal injury due to fire,
the following instructions must be performed regarding
gas connections and pressure testing:
• The unit and its gas connections must be leak tested
before placing in operation. Because of the danger of
explosion or fire, never use a match or open flame to
test for leaks. Never exceed specified pressures for
testing. Higher pressure may damage gas valve and
cause overfiring which may result in premature heat
exchanger failure.
• This unit and its shut-off valve must be disconnected
from the gas supply during any pressure testing of that
system at test pressures in excess of 1/2 PSIG (3.48 kPA).
• This unit must be isolated from the gas supply system by
closing its manual shut-off valve during any pressure
testing of the gas supply piping system at test pres-
sures equal to or less than 1/2 PSIG (3.48 kPA).
To avoid property damage or personal injury, be sure that is
no open flame in the vicinity during air bleeding.
There will be air in the gas supply line after testing for leaks on a
new installation. Therefore, the air must be bled from the line by
loosening the ground joint union until pure gas is expelled. Tight-
en union and wait for five minutes until all gas has been dissipated
in the air. Be certain there is no open flame in the vicinity during
air bleeding procedure. The unit is placed in operation by closing
the main electrical disconnect switch for the unit.

PROPANE GAS INSTALLATIONS

To avoid property damage, personal injury or death due
to fire or explosion caused by a propane gas leak, install
a gas detecting warning device. Since rust can reduce the
level of odordant in propane gas, a gas detecting warning
device is the only reliable way to detect a propane gas leak.
Contact a local propane gas supplier about installing a gas
detecting warning device.
IMPORTANT NOTE: Propane gas conversion kits must be installed
to convert units to propane gas.
All propane gas equipment must conform to the safety standards
of the National Board of Fire Underwriters (See NBFU Manual 58).
Line pressure 11.3 - 14" w.c.
For satisfactory operation, propane gas manifold pressure must
be within 9.7 - 10.3 inches w.c. for high fire and within 6.7 - 7.3
inches w.c. low fire at the manifold with all gas appliances in op-
eration. Maintaining proper gas pressure depends on three main
factors:
1. Vaporization rate, which depends on (a) temperature of
the liquid, and (b) wetted surface area of the container
or containers.
2. Proper pressure regulation.
11
CAUTION
WARNING
WARNING