must also be supplied by the installer. In some cases, the
installer may also need to supply a transition piece from 1/
2 inch to another pipe size.
C
I
OUNTERFLOW
NSTALLATIONS
When the gas piping enters through the left side of the furnace,
the installer must supply a straight pipe to reach the exterior of the
furnace.
A ground joint union, drip leg, and manual shutoff valve must also
be supplied by the installer. In some cases, the installer may also
need to supply a transition piece from 1/2" to another pipe size.
When the gas piping enters through the right side of the furnace,
the installer must supply the following fittings (starting at the gas
valve):
• 90 degree elbow.
• Close nipple.
• 90 degree elbow.
• Straight pipe to reach exterior of furnace.
G
P
C
AS
IPING
HECKS
Before placing unit in operation, leak test the unit and gas
connections.
WARNING
T
O AVOID THE POSSIBILITY OF EXPLOSION OR FIRE, NEVER USE A MATCH OR
OPEN FLAME TO TEST FOR LEAKS.
Check for leaks using an approved chloride-free soap and water
solution, an electronic combustible gas detector, or other approved
testing methods.
CAUTION
T
O PREVENT PROPERTY DAMAGE OR PERSONAL INJURY DUE TO FIRE, THE
FOLLOWING INSTRUCTIONS MUST BE PERFORMED REGARDING GAS
CONNECTIONS, PRESSURE TESTING, LOCATION OF SHUTOFF VALVE AND
INSTALLATION OF GAS PIPING.
NOTE: Never exceed specified pressures for testing. Higher
pressure may damage the gas valve and cause subsequent
overfiring, resulting in heat exchanger failure.
Disconnect this unit and shutoff valve from the gas supply piping
system before pressure testing the supply piping system with
pressures in excess of 1/2 psig (3.48 kPa).
This unit must be isolated from the gas supply system by closing
its manual shutoff valve before pressure testing of gas supply
piping system with test pressures equal to or less than 1/2 psig
(3.48 kPa).
P
G
T
P
ROPANE
AS
ANKS AND
IPING
WARNING
I
F THE G AS FURNACE IS INSTALLED IN A BASEMENT, AN EXCAVATED
AREA O R A CONFINED SPACE, IT IS STRO NGLY RECO MMENDED TO
CONTACT A PROPANE SUPPLIER TO INSTALL A GAS DETECTING
WARNING DEVICE IN CASE OF A GAS LEAK.
S
•
INCE PRO PANE GAS IS HEAVIER THAN AIR, ANY LEAKING GAS CAN
SETTLE IN ANY LO W AREAS OR CONFINED SPACES.
P
•
ROPANE GAS ODO RANT MAY FADE, MAKING THE G AS UNDETECTABLE
EXCEPT WITH A W ARNING DEVICE.