Circulating Air & Filters; Uctwork Ir Low - Goodman GMV9 Installation & Operating Instructions Manual

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, recom-
mended 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. Shel-
lac-based compounds resistant to the actions of liquefied petroleum
gases such as Gasolac , Stalactic
®
satisfactory.
Refer to the following illustration for typical propane gas installations.
First Stage
Regulator
200 PSIG
Maximum
Propane Gas Installation (Typ.)
Sizing Between First and Second Stage Regulator*
Maximum Propane Capacities listed are based on 2 psig pressure drop at 10 psig setting.
Capacities in 1,000 BTU/hour.
Pipe or
Tubing Tubing Size, O.D. Type L
Length, 3/8" 1/2"
Feet
10 730 1,700 3,200
20 500 1,100 2,200
30 400 920 2,000
40 370 850 1,700
50 330 770 1,500
60 300 700 1,300
80 260 610 1,200
100 220 540 1,000
125 200 490
150 190 430
175 170 400
200 160 380
To convert to capacities at 15 psig settings - multiply by 1.130
To convert to capacities at 5 psig settings - multiply by 0.879
Propane Gas Piping Chart I
Sizing Between Single or Second Stage Regulator and Appliance*
Maximum Propane Capacities Listed are Based on 1/2" W.C. pressure drop at 11" W.C. setting.
Capacities in 1,000 BTU/hour.
Pipe or
Tubing Tubing Size, O.D. Type L
Length, 3/8" 1/2" 5/8" 3/4"
Feet
10 39 92 199 329
20 26 62 131 216
30 21 50 107 181
40 19 41 90 145
50 18 37 79 131
60 16 35 72 121
80 13 29 62 104
100 11 26 55 90
125 10 24 48 81
150 9 21 43 72
200 8 19 39 66
250 8 17 36 60
*Data in accordance with NFPA pamphlet NO. 54
Propane Gas Piping Chart II
IO-243
, Clyde's or John Crane
® ®
5 to 15 PSIG
(20 PSIG Max.)
Continuous
11" W.C.
Second Stage
Regulator
Nominal Pipe Size
Schedule 40
5/8" 3/4" 7/8" 1/2"
5,300 8,300 3,200
3,700 5,800 2,200
2,900 4,700 1,800
2,700 4,100 1,600
2,400 3,700 1,500
2,200 3,300 1,300
1,900 2,900 1,200
1,700 2,600 1,000
900 1,400 2,300 900
830 1,300 2,100 830
780 1,200 1,900 770
730 1,100 1,800 720
Nominal Pipe Size
Schedule 40
7/8" 1-1/8" 1/2" 3/4" 1"
501 935 275 567 1,071
346 630 189 393 732
277 500 152 315 590
233 427 129 267 504
198 376 114 237 448
187 340 103 217 409
155 289 89 185 346
138 255 78 162 307
122 224 69 146 275
109 202 63 132 252
100 187 54 112 209
93 172 48 100 185
XIII. CIR XIII. CIR
XIII. CIR XIII. CIRCUL XIII. CIR
D - A
UCTWORK
Duct systems and register sizes must be properly designed for the
CFM and external static pressure rating of the furnace. Ductwork
should be designed in accordance with the recommended methods
of "Air Conditioning Contractors of America" Manual D.
A duct system must be installed in accordance with Standards of the
National Board of Fire Underwriters for the Installation of Air Condi-
are
®
tioning, Warm Air Heating and Ventilating Systems. Pamphlets No.
90A and 90B.
A closed return duct system must be used, with the return duct con-
nected to the furnace. NOTE: Ductwork must never be attached to
the back of the furnace. Supply and return connections to the fur-
nace may be made with flexible joints to reduce noise transmission.
To prevent the blower from interfering 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. A room, closet, or alcove
must not be used as a return air chamber.
When the furnace is used in connection with a cooling unit, the fur-
nace should be installed in parallel with or on the upstream side of
the cooling unit to avoid condensation in the heating element. With
a parallel flow arrangement, the dampers or other means used to
control the flow of air must be adequate to prevent chilled air from
entering the furnace and, if manually operated, must be equipped
with means to prevent operation of either unit unless the damper is
in the full heat or cool position.
3/4"
When the furnace is installed without a cooling coil, it is recommended
7,500
that a removable access panel be provided in the outlet air duct.
4,200
This opening shall be accessible when the furnace is installed and
4,000
3,700
shall be of such a size that the heat exchanger can be viewed for
3,400
visual light inspection or such that a sampling probe can be inserted
3,100
2,600
into the airstream. The access panel must be made to prevent air
2,300
leaks when the furnace is in operation.
2,100
1,900
When the furnace is heating, the temperature of the return air enter-
1,700
ing the furnace must be between 55°F and 100°F.
1,500
F - R
ILTERS EAD
R A D
ETURN IR
Filters must be used with this furnace. Discuss filter maintenance
with the building owner. Filters do not ship with this furnace, but
must be provided by the installer. Filters must comply with UL900 or
1-1/4" 1-1/2"
CAN/ULCS111 standards. If the furnace is installed without filters,
the warranty will be voided.
2,205 3,307
1,496 2,299
On upflow units, guide dimples locate the side return cutout
1,212 1,858
1,039 1,559
locations. Use a straight edge to scribe lines connecting the
913 1,417
dimples. Cut out the opening on these lines. NOTE: An
834 1,275
724 1,066
undersized opening will cause reduced airflow.
630 976
567 866
Upflow units with an air delivery of less than 1800 CFM should
511 787
439 665
either use the bottom return or one-side return.
390 590
Upflow units with an air delivery of 1800 CFM or higher must
either use a two-side return combination or a one-side return
and one bottom return combination. These combinations
provide proper airflow through the unit.
Refer to Minimum Filter Area tables to determine filter area require-
ments.
26
CUL CULA A A A A TIN CUL TIN TIN G AIR & FIL G AIR & FIL
CUL TING AIR & FIL TIN G AIR & FIL G AIR & FILTER
F
IR LOW
T S B I
HIS ECTION EFORE
UCTWORK
TER TERS S S S S TER
TER
T
NSTALLING HE
6/04