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N95ESN: Installation, Start-up, Operating and Service and Maintenance Instructions
Table 22 – Orifice Size and Manifold Pressure (in. w.c.) for Gas
Input Rate
26,000 BTUH ONLY
ORIFICE SIZE* AND MANIFOLD PRESSURE (IN WC) FOR GAS INPUT RATE
(TABULATED DATA BASED ON 13,000 BTUH PER BURNER, DERATED 2%/1000 FT (305M) ABOVE SEA LEVEL
ALTITUDE
AVG. GAS
RANGE
0.58
HEAT VALUE
AT ALTITUDE Orifice
Manifold
ft (m)
(Btu/cu ft)
No.
Pressure
900
44
0
925
44
(0)
950
44
975
44
to
1000
44
1025
44
2000
1050
44
(610)
1075
44
1100
44
43
U.S.A.
800
2001 (611)
825
43
to
850
44
3000 (914)
875
44
900
44
Canada
925
44
2001 (611)
950
44
to
975
44
4500 (1372)
1000
44
775
43
800
44
3001
825
44
(915)
850
44
875
44
to
900
44
4000
925
44
(1219)
950
44
750
43
775
44
4001
800
44
(1220)
825
44
850
44
to
875
44
5000
900
44
(1524)
925
44
43
725
5001
750
44
(1525)
775
44
800
44
to
825
44
850
44
6000
875
44
(1829)
900
44
675
43
6001
700
43
(1830)
725
44
750
44
to
775
44
7000
800
44
(2133)
825
44
850
44
* Orifice numbers shown in BOLD are factory-installed.
Table 22
(Continued) - Orifice Size and Manifold Pressure (in. w.c.)
for Gas Input Rate
26,000 BTUH ONLY
ORIFICE SIZE* AND MANIFOLD PRESSURE (IN WC) FOR GAS INPUT RATE
(TABULATED DATA BASED ON 13,000 BTUH PER BURNER, DERATED 2%/1000 FT (305M) ABOVE SEA LEVEL
650
43
7001
675
44
(2134)
700
44
725
44
to
750
44
8000
775
44
(2438)
800
44
825
44
625
43
8001
650
44
(2439)
675
44
700
44
to
725
44
9000
750
44
(2743)
775
44
9001
600
43
(2744)
625
44
650
44
to
675
44
10000
700
44
(3048)
725
44
* Orifice numbers shown in BOLD are factory-installed.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
SPECIFIC GRAVITY OF NATURAL GAS
0.60
0.62
0.64
Orifice
Manifold
Orifice
Manifold
Orifice
No.
Pressure
No.
Pressure
No.
1.8
43
1.7
43
1.7
43
1.7
44
1.8
43
1.6
43
1.6
44
1.7
44
1.8
44
1.6
44
1.6
44
1.7
44
1.5
44
1.5
44
1.6
44
1.4
44
1.5
44
1.5
44
1.3
44
1.4
44
1.4
44
1.3
44
1.3
44
1.4
44
1.2
44
1.3
44
1.3
44
1.7
43
1.8
43
1.8
42
1.6
43
1.7
43
1.7
43
1.8
44
1.8
43
1.6
43
1.7
44
1.7
44
1.8
44
1.6
44
1.6
44
1.7
44
1.5
44
1.5
44
1.6
44
1.4
44
1.5
44
1.5
44
1.3
44
1.4
44
1.4
44
1.3
44
1.3
44
1.4
44
1.7
43
1.8
43
1.8
42
43
1.7
43
1.7
43
1.8
1.7
44
1.8
44
1.8
43
1.6
44
1.7
44
1.7
44
1.5
44
1.6
44
1.6
44
1.4
44
1.5
44
1.5
44
1.4
44
1.4
44
1.5
44
1.3
44
1.3
44
1.4
44
1.7
43
1.7
43
1.8
43
1.8
43
1.6
43
1.7
43
1.7
44
1.7
44
1.8
43
1.6
44
1.6
44
1.7
44
1.5
44
1.5
44
1.6
44
1.4
44
1.5
44
1.5
44
1.3
44
1.4
44
1.4
44
1.3
44
1.3
44
1.4
44
1.7
43
1.7
43
1.8
43
1.8
44
1.8
43
1.7
43
1.7
44
1.7
44
1.8
44
1.6
44
1.6
44
1.7
44
1.5
44
1.5
44
1.6
44
1.4
44
1.4
44
1.5
44
1.3
44
1.3
44
1.4
44
1.2
44
1.3
44
1.3
44
1.8
43
1.8
42
1.5
42
1.6
43
1.7
43
1.7
43
43
1.6
43
1.7
44
1.8
1.6
44
1.7
44
1.7
44
1.5
44
1.6
44
1.6
44
1.4
44
1.5
44
1.5
44
1.3
44
1.4
44
1.4
44
1.3
44
1.3
44
1.4
44
1.7
43
1.8
42
1.5
42
1.8
43
1.7
43
1.7
43
1.7
44
1.8
44
1.8
43
1.6
44
1.7
44
1.7
44
1.5
44
1.5
44
1.6
44
1.4
44
1.4
44
1.5
44
1.3
44
1.4
44
1.4
44
1.2
44
1.3
44
1.3
44
1.7
43
1.8
43
1.8
42
1.8
43
1.7
43
1.7
43
43
1.7
44
1.8
44
1.8
1.6
44
1.6
44
1.7
44
1.5
44
1.5
44
1.6
44
1.4
44
1.4
44
1.5
44
1.3
44
1.3
44
1.4
44
1.7
43
1.8
43
1.8
42
1.8
43
1.6
43
1.7
43
1.7
44
1.7
44
1.8
44
1.6
44
1.6
44
1.7
44
1.4
44
1.5
44
1.5
44
1.3
44
1.4
44
1.4
44
SERVICE AND MAINTENANCE PROCEDURES
Untrained personnel can perform basic maintenance functions such as
cleaning and replacing air filters. All other operations must be performed
by trained service personnel. A qualified service person should inspect
the furnace once a year.
Manifold
Pressure
1.8
FIRE, INJURY OR DEATH HAZARD
1.7
1.8
Failure to follow this warning could result in personal injury, death
1.7
1.6
and/or property damage.
1.6
The ability to properly perform maintenance on this equipment requires
1.5
1.4
certain knowledge, mechanical skills, tools, and equipment. If you do
1.4
not possess these, do not attempt to perform any service and
1.6
maintenance on this equipment other than those procedures
1.8
1.7
recommended in the Owner's Manual.
1.8
1.7
1.6
1.6
1.5
1.4
1.5
ENVIRONMENTAL HAZARD
1.8
1.7
Failure to follow this caution may result in environmental pollution.
1.8
1.7
Remove and recycle all components or materials (i.e. oil, refrigerant,
1.6
control board, etc.) before unit final disposal.
1.5
1.4
1.8
1.7
1.6
1.8
1.7
ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD
1.6
1.5
Failure to follow this warning could result in personal injury or death,
1.4
or property damage.
1.8
1.7
Before installing, modifying, or servicing system, main electrical
1.8
1.7
disconnect switch must be in the OFF position and install a lockout tag.
1.6
There may be more than one disconnect switch. Lock out and tag
1.5
switch with a suitable warning label. Verify proper operation after
1.4
1.4
servicing. Always reinstall access doors after completing service and
1.6
maintenance.
1.8
1.7
1.8
1.7
1.6
1.5
1.4
ELECTRICAL OPERATION HAZARD
A150571
Failure to follow this caution may result in improper furnace operation
or failure of furnace.
Label all wires prior to disconnection when servicing controls. Wiring
errors can cause improper and dangerous operation.
1.6
General
1.8
1.7
These instructions are written as if the furnace is installed in an upflow
1.8
application. An upflow furnace application is where the blower is
1.6
1.5
located below the combustion and controls section of the furnace, and
1.4
1.4
conditioned air is discharged upward. Since this furnace can be installed
1.6
in any of the 4 positions shown in
1.8
1.6
orientation to component location accordingly.
1.7
Electrical Controls and Wiring
1.6
1.5
Each pressure switch is labeled with the reference location (noted as
1.4
1.6
"COLLECTOR BOX-LPS" or "HOUSING-HPS" on the switch). The
1.7
nominal break point of each switch is shown on the label below the
1.8
1.7
reference location in inches of water column, "W.C." The maximum and
1.6
minimum break point of the switch is +/- 0.05 inches of water column
1.5
from the nominal break point of the switch. The maximum make point of
A150572
the switch is 0.10 inches of water above the maximum break point of the
switch.
54
WARNING
!
CAUTION
!
WARNING
!
CAUTION
!
Fig.
2, you must revise your
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