17
Table 5 – Air Delivery -- CFM (With Filter)*
UNIT SIZE
RETURN---AIR
SUPPLY
SPEED
EXTERNAL STATIC PRESSURE (In. W.C.)
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
045---08/
024045
Bottom or
Side(s)
5
1185
1145
1115
1075
1035
980
905
820
720
580
4
920
880
835
800
755
720
680
645
605
540
3
735
685
625
585
530
490
435
395
345
295
2
820
765
725
670
630
580
545
490
455
405
1
650
595
535
490
430
390
330
280
235
--- ---
070---16 /
048070
Bottom or
Side(s)
5
1625
1585
1535
1495
1460
1415
1365
1295
1220
1125
4
1405
1360
1320
1280
1240
1195
1155
1115
1070
1030
3
1240
1200
1155
1110
1065
1020
975
935
895
850
2
1190
1140
1095
1050
1000
955
915
870
830
790
1
1035
985
930
885
835
785
745
695
650
600
090---16 /
048090
Bottom or
Side(s)
5
1845
1800
1755
1710
1665
1595
1500
1400
1275
1105
4
1590
1545
1500
1455
1410
1365
1315
1270
1180
1000
3
1365
1320
1270
1215
1170
1125
1070
1025
955
900
2
1225
1160
1110
1060
1010
950
895
830
770
710
1
1100
1030
960
875
805
730
645
570
505
425
110---20 /
060110
Bottom or
Side(s)
5
2255
2205
2150
2100
2040
1985
1920
1835
1735
1615
4
1600
1525
1465
1400
1335
1275
1210
1150
1080
1015
3
1945
1890
1830
1770
1715
1655
1600
1545
1480
1430
2
1420
1340
1280
1200
1140
1065
1005
925
865
790
1
1280
1205
1140
1055
990
910
840
760
695
630
135---20 /
060135
Bottom or
Side(s)
5
2295
2240
2185
2125
2070
2005
1925
1805
1670
1545
4
1725
1660
1605
1545
1460
1395
1340
1285
1230
1170
3
1910
1865
1800
1745
1685
1610
1545
1485
1435
1380
2
1630
1575
1510
1435
1365
1300
1245
1185
1130
1065
1
1430
1355
1285
1200
1125
1075
1015
945
855
800
*A filter is required for each return---air inlet. Airflow performance included 3/4---in. (19 mm) washable filter media such as contained in factory---authorized
accessory filter rack. To determine airflow performance without this filter, assume an additional 0.1 In. W.C. available external static pressure.
--- --- Indicates unstable operating conditions.
Table 6 – Maximum Capacity of Pipe*
NOMINAL IRON
PIPE
INTERNAL
DIAMETER
LENGTH OF PIPE --- FT. (M)
SIZE IN. (mm)
In. (mm)
10
20
30
40
50
1/2 (13)
0.622 (16)
175 (53)
120 (37)
97 (30)
82 (25)
73 (22)
3/4 (19)
0.824 (21)
360 (110)
250 (76)
200 (61)
170 (52)
151 (46)
1 (25)
1.049 (27)
680 (207)
465 (142)
375 (114)
320 (98)
285 (87)
1---1/4 (32)
1.380 (35)
1400 (427)
950 (290)
770 (235)
660 (201)
580 (177)
1---1/2 (38)
1.610 (41)
2100 (640)
1460 (445)
1180 (360)
990 (301)
900 (274)
* Cubic ft. of natural gas per hr for gas pressures of 0.5 psig (14---In. W.C.) or less and a pressure drop of 0.5---In. W.C. (based on a 0.60 specific gravity
gas). Ref: Chapter 6 ANSI Z223---2009/NFPA 54---2009.
Piping should be pressure and leak tested in accordance with
NFGC in the United States, local, and national plumbing and gas
codes before the furnace has been connected. After all
connections have been made, purge lines and check for leakage at
furnace prior to operating furnace.
If pressure exceeds 0.5 psig (14--In. W.C.), gas supply pipe must
be disconnected from furnace and capped before and during
supply pipe pressure test. If test pressure is equal to or less than
0.5 psig (14--In. W.C.), turn off electric shutoff switch located on
furnace gas control valve and accessible manual equipment
shutoff valve before and during supply pipe pressure test. After
all connections have been made, purge lines and check for
leakage at furnace prior to operating furnace.
The gas supply pressure shall be within the maximum and
minimum inlet supply pressures marked on the rating plate with
the furnace burners ON and OFF.
PG
8M
EA
Summary of Contents for PG8JEA
Page 4: ...4 A10269 Fig 2 Clearances to Combustibles PG8MEA ...
Page 28: ...28 A10133 Fig 33 Chimney Inspection Chart PG8MEA ...
Page 38: ...38 Table 13 Orifice Size and Manifold Pressure In W C for Gas Input Rate A10180 PG8MEA ...
Page 39: ...39 Table 13 Orifice Size and Manifold Pressure In W C for Gas Input Rate CONT A10180A PG8MEA ...
Page 40: ...40 Table 14 Orifice Size And Manifold Pressure In W C For Gas Input Rate A10181 PG8MEA ...
Page 41: ...41 Table 14 Orifice Size And Manifold Pressure In W C For Gas Input Rate CONT A10181A PG8MEA ...