Upflow Installations - Goodman GDVC80703B Installation Instructions Manual

G G G G G P P P P P C C C C C
AS AS AS AS AS IPING IPING IPING IPING IPING ONNECTIONS ONNECTIONS ONNECTIONS ONNECTIONS ONNECTIONS
T
O AVOID POSSIBLE UNSATISFACTORY
DAMAGE DUE TO UNDERFIRING
/
OF NATURAL PROPANE GAS PIPING
/
THE METER TANK TO THE FURNACE
When sizing a trunk line, be sure to include all appliances which will
operate simultaneously.
The gas piping supplying the furnace must be properly sized based
on the gas flow required, specific gravity of the gas, and length of
the run. The gas line installation must comply with local codes, or in
their absence, with the latest edition of the National Fuel Gas Code,
NFPA 54/ANSI Z223.1.
Natural Gas Capacity of Pipe
In Cubic Feet of Gas Per Hour (CFH)
Length of
Pipe in Feet 1/2"
10 132
20 92
30 73
40 63
50 56
60 50
70 46
80 43
90 40
100 38
(Pressure 0.5 psig or less and pressure drop of 0.3" W.C.; Based on
0.60 Specific Gravity Gas)
CFH = BTUH Furnace Input
Heating Value of Gas (BTU/Cubic Foot)
To connect the furnace to the building's gas piping, the installer
must supply a ground joint union, drip leg, manual shutoff valve,
and line and fittings to connect to gas valve. In some cases, the
installer may also need to supply a transition piece from 1/2" pipe to
a larger pipe size.
The following stipulations apply when connecting gas piping.
• Use black iron or steel pipe and fittings for the building
piping.
• Use pipe joint compound on male threads only. Pipe joint
compound must be resistant to the action of the fuel used.
• Use ground joint unions.
• Install a drip leg to trap dirt and moisture before it can
enter the gas valve. The drip leg must be a minimum of
three inches long.
• Install a 1/8" NPT pipe plug fitting, accessible for test gage
connection, immediately upstream of the gas supply
connection to the furnace.
• Use two pipe wrenches when making connection to the
gas valve to keep it from turning. The orientation of the
gas valve on the manifold must be maintained as shipped
from the factory.
• Install a manual shutoff valve between the gas meter and
unit within six feet of the unit. If a union is installed, the
WARNING
OPERATION OF EQUIPMENT
,
OR EQUIPMENT USE THE PROPER
NEEDED WHEN RUNNING
.
Nominal Black Pipe Size
3/4" 1" 1 1/4"
278 520 1050
190 350 730
152 285 590
130 245 500
115 215 440
105 195 400
96 180 370
90 170 350
84 160 320
79 150 305
union must be downstream of the manual shutoff valve,
between the shutoff valve and the furnace.
• Tighten all joints securely.
• Connect the furnace to the building piping by one of the
following methods:
SIZE
–
Rigid metallic pipe and fittings.
PIPE FROM
–
Semi-rigid metallic tubing and metallic fittings.
Aluminum alloy tubing must not be used in exterior
locations.
–
Use listed gas appliance connectors in accordance with
their instructions. Connectors must be fully in the same
room as the furnace.
–
Protect connectors and semi-rigid tubing against
physical and thermal damage when installed. Ensure
aluminum-alloy tubing and connectors are coated to
protect against external corrosion when in contact with
masonry, plaster, or insulation, or subjected to repeated
1 1/2"
wetting by liquids such as water (except rain water),
1600
detergents, or sewage.
1100
980
Location of Manual Valve
760
(Installed Ahead of
Ground Joint Pipe Union)
670
610
Height Required
By Local Code
560
530
490
Ground Joint Pipe Union
460 To Be Installed Ahead of
Drip Leg
Reducing Coupling
1/2" x 1/8" with 1/8"
Pipe Plug to Measure
Line Gas Pressure
U U U U U I I I I I
PFLOW PFLOW NSTALLATIONS NSTALLATIONS
PFLOW PFLOW PFLOW NSTALLATIONS NSTALLATIONS NSTALLATIONS
When the gas piping enters through the right side of the furnace, the
installer must supply the following fittings (starting from the gas
valve):
• Close nipple.
• 90 degree elbows.
• 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 left side of the furnace, the
installer must supply the following fittings (starting from the gas
valve):
• 90 degree elbow.
• Straight pipe to reach the exterior of the furnace.
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C C C C C A A A A A
I R I R I RC U L I R I R C U L C U L C U LA A A A A T I N G C U L T I N G T I N G T I N G T I N G I R I R I R A N D I R I R
Gas Valve
General Furnace Layout
F F F F F
A N D A N D A N D A N D I L I LT E R S I L I L I L T E R S T E R S T E R S T E R S
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