Goodman GDVC80703B, Руководство по установке

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G G
G G
G
A S A S A S A S A S
S S
S S
S
U P P L U P P L U P P L U P P L U P P LY Y Y Y Y A N D A N D A N D A N D A N D
P P
P P
P
I P I N G I P I N G I P I N G I P I N G I P I N G
• 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 inch to another pipe size.
C C
C C C
OUNTERFLOW OUNTERFLOW OUNTERFLOW OUNTERFLOW OUNTERFLOW
I I I
I I
NSTALLATIONS NSTALLATIONS NSTALLATIONS NSTALLATIONS NSTALLATIONS
When the gas piping enters through the left side of the furnace, the
installer must supply a straight pipe and a 90 degree elbow 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 most cases, the installer may also
need to supply a transition piece from ½” 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):
• Close Nipple
• 90 Degree Elbow
• Straight Pipe to Reach Exterior of Furnace.
G G
G G
G
AS AS
AS AS AS
P P
P P
P
IPING IPING
IPING IPING IPING
C C
C C
C
HECKS HECKS
HECKS HECKS HECKS
Before placing unit in operation, leak test the unit and gas connec-
tions.
T
O AVOID THE POSSIBILITY OF EXPLOSION OR FIRE
,
NEVER USE A MATCH
OR OPEN FLAME TO TEST FOR LEAKS
.
WARNING
Check for leaks using an approved chloride-free soap and water
solution, an electronic combustible gas detector, or other approved
testing methods.
NOTE: NOTE:
NOTE: NOTE:
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 pres-
sures 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 P
P P P
ROPANE ROPANE
ROPANE ROPANE ROPANE
G G
G G G
AS AS
AS AS AS
T T
T T T
ANKS ANKS
ANKS ANKS ANKS
AND AND
AND AND AND
P P
P P P
IPING IPING
IPING IPING IPING
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 detect a
propane gas leak. Rust can reduce the level of odorant in propane
gas. Do not rely on your sense of smell. Contact a local propane gas
supplier about installing a gas detecting warning system. If the
presence of gas is suspected, follow the instructions on Page 3 of
this manual.
All propane gas equipment must conform to the safety standards of
the National Board of Fire Underwriters, NBFU Manual 58.
For satisfactory operation, propane gas pressure must be 10 inch
WC at the furnace manifold with all gas appliances in operation.
Maintaining proper gas pressure depends on three main factors:
1. Vaporization rate, depending on temperature of the liquid,
and “wetted surface” area of the container or containers.
2. Proper pressure regulation. (Two-stage regulation is
recommended for both cost and efficiency).
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 vaporization, rec-
ommended 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 commercial compounds, special pipe dope must be used.
Shellac-based compounds resistant to the actions of liquefied pe-
troleum gases such as Gasolac
®
, Stalactic
®
, Clyde’s
®
or John Crane
®
are satisfactory.
Refer to the following illustration for typical propane gas installa-
tions and piping.
200 PSIG
Maximum
5 to 15 PSIG
(20 PSIG Max.)
Continuous
11" W.C.
Second Stage
Regulator
First Stage
Regulator
Propane Gas Installation (Typ.)