Payne PG9YAA036060 Installation Instructions Manual page 34

NATURAL GAS MANIFOLD PRESSURE (in wc)
HEATING
0 to
VALUE
2000
at ALTITUDE
Orifice Manifold
BTU/CU. FT.
No. Pressure
700 ---- ----
725 ---- ----
750 ---- ----
775 ---- ----
800 ---- ----
825 ---- ----
850 ---- ----
875 ---- ----
900 ---- ----
925 44 3.7
950 44 3.5
975 44 3.3
1000 44 3.2
1050 46 3.6
1100 46 3.3
Conversion: 1 in wc = .25 kPa
Natural gas data is based on 0.60 specific gravity. For fuels with different specific gravity consult the National Fuel Gas Code ANSI
NOTE:
Z223.1---2006/NFPA 54---2006 or National Standard of Canada, Natural Gas And Propane Installation Code CSA B149.1---05.
PROPANE GAS MANIFOLD PRESSURE (in wc)
HEATING VALUE
at ALTITUDE
BTU/CU. FT.
2500
Orifice Size
Conversion: 1 in wc = .25 kPa
Propane data is based on 1.53 specific gravity. For fuels with different specific gravity consult the National Fuel Gas Code ANSI
NOTE:
Z223.1---2006/NFPA 54---2006 or National Standard Of Canada, Natural Gas And Propane Installation Code CSA B149.1---05.
NOTE: The derating of these furnaces at 2% (Natural Gas) and 4% (Propane Gas) has been tested and design---certified by CSA.
In Canada, the input rating must be derated 5% (Natural Gas) and 10% (Propane Gas) for altitudes of 2,000 to 4,500 above sea level. Use the 2001 to
3000 column in Table 6 and Table 7.
The burner orifice part nos. are as follows:
Orifice #41
Orifice #42
Orifice #43
Orifice #44
Orifice #45
Orifice #46
Orifice #54
Orifice #55
Orifice #56
General Derating Rules
1. These furnaces may be used at full input rating when in-
stalled at altitudes up to 2,000'. When installed above
2,000', the input must be decreased 2% (natural) or 4%
(Propane) for each 1000' above sea level in the USA. In
Canada, the input rating must be derated 5% (natural) or
10% (Propane) for each 1000' above sea level. See Table 6
or Table 7 for required high altitude input rate.
2. For operation with natural gas at altitudes above 2,000',
orifice change and/or manifold pressure adjustments may
be required for the gas supplied. First consult your local
gas supplier, then refer to Table 6 for required pressure
change and/or orifice change for high altitudes.
MEAN ELEVATION FEET ABOVE SEA LEVEL
2001 to 3001 to
3000 4000
Orifice Manifold Orifice Manifold
No. Pressure No. Pressure
---- ---- ----
---- ---- ----
---- ---- ----
---- ---- ----
---- ---- ----
---- ---- 43
---- ---- 43
43 3.4 43
44 3.7 44
44 3.5 44
44 3.3 44
44 3.1 45
45 3.6 45
45 3.3 45
45 3.0 46
Table 6 – Natural Gas Manifold Pressure
MEAN ELEVATION FEET ABOVE SEA LEVEL
0 to 2001 to
2000 3000
10.0 8.9
#55 #55
Table 7 – Propane Gas Manifold Pressure
333730- -701
333730- -702
333730- -703
333730- -704
333730- -705
333730- -709
333730- -706
333730- -707
333730- -708
4001 to 5001 to
5000
Orifice Manifold Orifice
No. Pressure No.
---- ---- ---- ----
---- ---- ---- ----
---- ---- ---- ----
---- ---- ---- 41
---- 42 3.1 43
3.7 43 3.6 43
3.5 43 3.4 44
3.3 44 3.6 44
3.6 44 3.4 44
3.4 44 3.2 44
3.2 44 3.1 45
3.7 45 3.5 45
3.5 45 3.4 45
3.2 45 3.1 46
3.0 46 2.9 ----
3001 to 4001 to
4000 5000
8.4 10.0
#55 #56
3. For operation with Propane gas, gas orifices MUST be
changed and manifold pressure MUST be maintained as
per Table 7. Orifices can be ordered through our distribut-
or. (See Fig. 35).
High Altitude Input Rate =
Nameplate Sea Level Input Rate x (Multiplier)
Elevation
2001' - 3000'
3001' - 4000'
4001' - 5000'
5001' - 6000'
6001' - 7000'
7001' - 8000'
* Based on mid---range of elevation.
High Altitude Air Pressure Switch
Altitudes over 4,000' may require a different air pressure switch
than the one installed at the factory. Check parts list for pressure
switch and consult your distributor for part number and
availability. In Canada, provincial codes may govern installation
of switch. Check with governing authorities.
34
6001 to
6000 7000
Manifold Orifice Manifold
Pressure No. Pressure
---- ---- ----
---- 42 3.5
---- 42 3.3
2.9 43 3.7
3.6 43 3.5
3.4 43 3.3
3.7 44 3.6
3.5 44 3.4
3.3 44 3.2
3.1 45 3.6
3.6 45 3.5
3.4 45 3.3
3.2 45 3.1
3.1 ---- ----
---- ---- ----
5001 to 6001 to
6000 7000
10.0 10.0
#56 #56
[USA]
High Altitude Multiplier
Natural Gas Propane Gas
0.95 0.90
0.93 0.86
0.91 0.82
0.89 0.78
0.87 0.74
0.85 0.70
7001 to
8000
Orifice Manifold
No. Pressure
42 3.6
42 3.4
42 3.2
43 3.6
43 3.4
44 3.6
44 3.4
44 3.2
44 3.1
45 3.5
45 3.3
45 3.2
46 3.1
---- ----
---- ----
7001 to
8000
10.0
#56