Installation Guide
31
Check for leaks using an approved chloride-free soap and wa-
ter solution, an electronic combustible gas detector, or other
approved testing methods.
pressure may damage the gas valve and cause subsequent
system before pressure testing the supply piping system with
Isolate this unit from the gas supply piping system by closing
supply piping system with test pressures equal to or less than
T
O
AVOID
THE
POSSIBILITY
OF
EXPLOSION
OR
FIRE
,
NEVER
USE
A
MATCH
OR
OPEN
FLAME
TO
TEST
FOR
LEAKS
.
WARNING
I
F
THE
GAS
FURNACE
IS
INSTALLED
IN
A
BASEMENT
,
AN
EXCAVATED
AREA
OR
CONFINED
SPACE
,
IT
IS
STRONGLY
RECOMMENDED
TO
CONTACT
A
PROPANE
SUPPLIER
TO
INSTALL
A
GAS
DETECTING
WARNING
DEVICE
IN
CASE
OF
A
GAS
LEAK
.
S
INCE
PROPANE
GAS
IS
HEAVIER
THAN
AIR
,
ANY
LEAKING
GAS
CAN
SETTLE
IN
ANY
LOW
AREAS
OR
CONFINED
SPACES
.
P
ROPANE
GAS
ODORANT
MAY
FADE
,
MAKING
THE
GAS
UNDETECTABLE
EXCEPT
WITH
A
WARNING
DEVICE
.
•
•
WARNING
A gas detecting warning system is the only reliable way to de-
tect a propane gas leak. Rust can reduce the level of odorant
a local propane gas supplier about installing a gas detecting
warning system. If the presence of gas is suspected, follow
the instructions listed in the Safety Considerations section
of this manual.
All propane gas equipment must conform to the safety
Manual 58.
200 PSIG
Maximum
5 to 15 PSIG
(20 PSIG Max.)
Continuous
11" W.C .
Second Stage
Regulator
First Stage
Regulator
-
eration. Maintaining proper gas pressure depends on three
main factors:
liquid, and “wetted surface” area of the con tainer
or containers.
3. Pressure drop in lines between regulators, and
between second stage regulator and the appliance.
Pipe size will depend on length of pipe run and total
load of all appliances.
Complete information regarding tank sizing for vaporiza tion,
recommended regulator settings, and pipe sizing is available
from most regulator manufacturers and propane gas suppliers.
Since propane gas will quickly dissolve white lead and most stan-
dard com mercial compounds, special pipe dope must be used.
Always use a pipe thread sealant approved for all gases.
Refer to the illustration for typical propane gas installa-
tions and piping.
N
EVER
ALLOW
THE
PRODUCTS
OF
COMBUSTION
,
INCLUDING
CARBON
MONOXIDE
,
TO
ENTER
THE
RETURN
DUCT
WORK
OR
CIRCULATION
AIR
SUPPLY
.
WARNING
Install the duct system in accordance with Standards of the
Pamphlets No. 90A and 90B.
A closed return duct system must be used, with the return
duct connected to the furnace.
never be attached to the back of the furnace.
side returns or bottom return or a combination of side /
con nections to reduce noise transmission. To prevent the
blower from inter fering with combustion air or draft when a
central return is used, a connecting duct must be installed
between the unit and the utility room wall. Never use a
room, closet, or alcove as a return air chamber.
Refer to your furnace rating plate for the maximum ESP
Total external static refers to everything external to
registers must all be considered when reading your total