Carrier DIRECT VENT 4 58HDV Installation Instructions Manual page 36

NATURAL GAS MANIFOLD PRESSURE (in wc)
Table 7
0 to 2000
HEATING
(0 to 609.6)
VALUE at
ALTITUDE
Manifold
Orifice
BTU/CU.
Pressure
No.
FT.
HI LO
700 ---- ---- ----
725 ---- ---- ----
750 ---- ---- ----
775 ---- ---- ----
800 ---- ---- ----
825 ---- ---- ----
850 ---- ---- ----
875 ---- ---- ----
900 ---- ---- ----
925 44 3.7 1.8
950 44 3.5 1.7
975 44 3.3 1.6
1000 44 3.2 1.6
1050 46 3.6 1.8
1100 47 3.8 1.8
Conversion: 1 in wc = 249 Pa
NOTE: Propane data is based on 1.53 specific gravity. For fuels with different specific gravity consult the National Fuel Gas Code ANSI
Z223.1- -2006/NFPA 54- -2006 or National Standard of Canada, Natural Gas and Propane Installation Code CSA B149.1- -05.
In the USA, 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 (609.6 to 1371.6m)
above sea level. Use the 2001 to 3000 (609.9 to 914.4m) column in Table 7 and Table 8.
Table 8 PROPANE GAS MANIFOLD PRESSURE (in wc)
HEATING VALUE 0 to 2000
at ALTITUDE (0 to 609.6)
BTU/CU. FT.
Hi
2500 10.0
Orifice Size #55
Conversion: 1 in wc = 249 Pa
NOTE:
Propane data is based on 1.53 specific gravity. For fuels with different specific gravity consult the National Fuel Gas Code A
Z223.1- - 2006/NFPA 54- - 2006 or National Standard of Canada, Natural Gas and Propane Installation Code CSA B149.1- - 05.
In the USA, 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 (609.6 to 1371.6m)
above sea level. Use the 2001 to 3000 (609.9 to 914.4m) column in Table 7 and Table 8.
The burner orifice part numbers are as follows:
Orifice Part #
41 333730--701
43 333730--703
45 333730--705
47 333730--710
49 333730--712
55 333730--707
MEAN ELEVATION ABOVE SEA LEVEL ft(m)
3001 to 4000
2001 to 3000
{
(914.7 to 1219.2)
(609.9 to 914.4)
{
Manifold Manifold
Orifice Orifice
Pressure Pressure
No. No.
HI LO HI LO
---- ---- ---- ---- ----
---- ---- ---- ---- ----
---- ---- ---- ---- ----
---- ---- ---- ---- ----
---- ---- ---- ---- ----
---- ---- ---- 44 3.7 1.8
---- ---- ---- 44 3.5 1.7
44 3.5 1.7 44 3.3 1.6
44 3.3 1.6 45 3.7 1.8
44 3.2 1.5 46 3.7 1.8
45 3.6 1.8 46 3.5 1.7
46 3.6 1.8 47 3.8 1.9
46 3.4 1.7 47 3.6 1.8
47 3.5 1.7 48 3.7 1.8
48 3.7 1.8 48 3.4 1.7
MEAN ELEVATION FEET ABOVE SEA LEVEL ft(m)
3001 to 3999
2001 to 3000
{
(914.7 to
(609.9 to
1219.2)
914.4)
{
Lo Hi Lo Hi
4.9 8.9 4.4 8.4
#55 #55
Orifice Part #
42 333730--702
44 333730--704
46 333730--709
48 333730--711
54 333730--706
56 333730--708
20,000 BTU per burner
4001 to 5000 5001 to 6000
(1219.5 to 1524) (1524.3 to 1828.8)
Manifold
Orifice Orifice
Pressure
No. No.
HI LO HI
---- ---- ---- ---- ---- ----
---- ---- ---- ---- ---- ----
---- ---- ---- ---- ---- ----
---- ---- ---- ---- 44 3.5
---- 44 3.6 1.8 44 3.3
44 3.4 1.7 45 3.8
44 3.2 1.6 46 3.7
46 3.8 1.9 46 3.5
46 3.6 1.8 47 3.8
46 3.4 1.7 47 3.6
47 3.7 1.8 47 3.4
47 3.5 1.7 48 3.7
48 3.8 1.8 48 3.5
48 3.4 1.7 49 3.7
49 3.7 1.8 ---- ----
Bold- - indicates factory orifice size.
20,000 BTU per burner
4001 to 5000 5001 to 6000
(1219.5 to 1524) (1524.3 to
Lo Hi Lo Hi
4.1 10.0 4.9 10.0
#56
Changing Orifices for High Altitude
!
ELECTRICAL
HAZARD
Failure to follow this warning could result in personal injury,
death, and/or property damage.
Turn OFF electric power (at disconnect) and gas supply (at
manual valve in gas line) when installing orifices. Installation
of orifices requires a qualified service technician.
NOTE: Main burner orifices can be changed for high altitudes.
1. Disconnect gas line from gas valve.
2. Remove manifold from furnace.
3. Remove the orifices from the manifold and replace them
with properly sized orifices.
4. Tighten orifices so it is seated and gas tight. (See Fig. 39.)
36
6001 to 7000
(1829.1 to 2133.6)
Manifold Manifold
Orifice Orifice
Pressure Pressure
No.
LO HI LO
---- ---- ---- ----
---- 44 3.7 1.8
---- 44 3.5 1.7
1.7 44 3.2 1.6
1.6 45 3.7 1.8
1.8 46 3.6 1.8
1.8 46 3.4 1.7
1.7 47 3.7 1.8
1.8 47 3.5 1.7
1.8 48 3.7 1.8
1.7 48 3.5 1.7
1.8 48 3.4 1.6
1.7 49 3.8 1.8
1.8 ---- ---- ----
---- ---- ---- ----
6001 to 7000
(1829.1 to
1828.8) 2133.6)
Lo Hi Lo
4.9 10.0 4.9
#56 #56
WARNING
SHOCK, FIRE OR EXPLOSION
7001 to 8000
(2133.9 to 2438.4)
Manifold
Pressure
No.
HI LO
44 3.7 1.8
44 3.4 1.7
44 3.2 1.6
46 3.8 1.9
46 3.6 1.7
47 3.8 1.9
47 3.6 1.7
48 3.8 1.9
48 3.6 1.8
48 3.4 1.7
49 3.8 1.9
49 3.6 1.8
49 3.4 1.7
---- ---- ----
---- ---- ----
7001 to 8000
(2133.9 to
2438.4)
Hi Lo
10.0 4.9
#56
NSI