Circulating Air And Filters; Ductwork-Airflow - Whirlpool Gold WGFM195 Installation Instructions Manual

Propane Gas Piping Chart I
Pipe or Tubing Length—ft (m) ³⁄₈"
150 (45.7)
175 (53.3)
200 (61)
To convert to capacities at 15 psig settings—multiply by 1.13. To convert to capacities at 5 psig settings—multiply by 0.879.
Sizing Between Single or 2
Maximum Propane Capacities Listed are Based on ¹⁄₂" W.C. pressure drop at 11" W.C. setting. Capacities in 1,000 Btu/h.
Propane Gas Piping Chart II
Pipe or Tubing Length—ft (m) ³⁄₈"
10 (3)
20 (6.1)
30 (9.2)
40 (12.2)
50 (15.2)
60 (18.3)
80 (24.4)
100 (30.5)
125 (38.1)
150 (45.7)
200 (61)
250 (76.2)
Data in accordance with NFPA pamphlet Number 54.
Duct systems and register sizes must be properly designed
for the CFM and external static pressure rating of the furnace.
Design the ductwork in accordance with the recommended
methods of "Air Conditioning Contractors of America"
Manual D.
Install the duct system in accordance with Standards of the
National Board of Fire Underwriters for the Installation of Air
Conditioning, Warm Air Heating and Ventilating Systems.
Pamphlets No. 90A and 90B.
A closed return duct system must be used, with the return
duct connected to the furnace.
NOTE: Ductwork must never be attached to the back of the
furnace.
Flexible joints may be used for supply and return connections
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.
Never use a room, closet or alcove as a return air chamber.
32
Tubing Size, O.D. Type L
¹⁄₂"
190 430
170 400
160 380
nd
Stage Regulator and Appliance*
Tubing Size, O.D. Type L
¹⁄₂" ⁵⁄₈"
39 92 199
26 62 131
21 50 107
19 41 90
18 37 79
16 35 72
13 29 62
11 26 55
10 24 48
9 21 43
8 19 39
8 17 36

CIRCULATING AIR AND FILTERS

Ductwork—Airflow
⁵⁄₈" ³⁄₄" ⁷⁄₈"
830 1,300 2,100
780 1,200 1,900
730 1,100 1,800
Nominal Pipe Size Schedule 40
³⁄₄" ⁷⁄₈" ¹⁄₂"
1¹⁄₈
329 501 935 275
216 346 630 189
181 277 500 152
145 233 427 129
131 198 376 114
121 187 340 103
104 155 289 89
90 138 255 78
81 122 224 69
72 109 202 63
66 100 187 54
60 93 172 48
When the furnace is used in connection with a cooling unit, the
furnace 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.
When the furnace is installed without a cooling coil, it is
recommended that a removable access panel be provided in the
outlet air duct. This opening shall be accessible when the furnace
is installed and shall be of such a size that the heat exchanger
can be viewed for visual light inspection or such that a sampling
probe can be inserted into the airstream. The access panel must
be made to prevent air leaks when the furnace is in operation.
When the furnace is heating, the temperature of the return air
entering the furnace must be between 55°F and 100°F (13ºC and
38ºC).
Nominal Pipe Size Schedule 40
¹⁄₂" ³⁄₄"
830 1,900
770 1,700
720 1,500
³⁄₄"
1" 1¹⁄₄"
567 1,071 2,205
393 732 1,496
315 590 1,212
267 504 1,039
237 448 913
217 409 834
185 346 724
162 307 630
146 275 567
132 252 511
112 209 439
100 185 390
1¹⁄₂"
3,307
2,299
1,858
1,559
1,417
1,275
1,066
976
866
787
665
590