Service And Maintenance Procedures - International comfort products R9MSB0601716A Service And Technical Support Manual

Table 4 − Orifice Size and Manifold Pressure (in. w.c.) for Gas Input Rate (Cont.)
(TABULATED DATA BASED ON 20,000 BTUH PER BURNER, DERATED 2%/1000 FT (305M) ABOVE SEA LEVEL)
ALTITUDE
RANGE HEAT VALUE
AT ALTITUDE
ft (m)
7001
(2134)
to
8000
(2438)
8001
(2439)
to
9000
(2743)
9001
(2744)
to
10000
(3048)
* Orifice numbers shown in BOLD are factory-installed.
SERVICE AND MAINTENANCE
PROCEDURES
WARNING
!
FIRE, INJURY OR DEATH HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
The ability to properly perform maintenance on this
equipment requires certain knowledge, mechanical
skills, tools, and equipment. If you do not possess
these, do not attempt to perform any service and
maintenance on this equipment other than those
procedures recommended in the Owner's Manual.
CAUTION
!
ENVIRONMENTAL HAZARD
Failure to follow this
environmental pollution.
Remove and recycle all components or materials (i.e.
oil, refrigerant, control board, etc.) before unit final
disposal.
440 04 6000 00
SINGLE-STAGE FURNACE
A V G . G A S
0.58
Orifice Manifold
(Btu/cu ft) No. Pressure
650 42 3.4
675 43 3.8
700 43 3.5
725 44 3.8
750 44 3.5
775 44 3.3
800 44 3.1
825 44 2.9
625 42 3.4
650 43 3.8
675 43 3.5
700 44 3.7
725 44 3.5
750 44 3.3
775 44 3.0
600 42 3.3
625 43 3.7
650 43 3.5
675 44 3.7
700 44 3.4
725 44 3.2
caution may result in
Specifications subject to change without notice.
S P E C F I C I G R A V T I Y O F N A T U
0.60 0.62
Orifice Manifold Orifice
No. Pressure No.
42 3.5 42
42 3.2 42
43 3.7 43
43 3.4 43
44 3.7 44
44 3.4 44
44 3.2 44
44 3.0 44
42 3.5 42
42 3.2 42
43 3.6 43
43 3.4 43
44 3.6 44
44 3.4 44
44 3.2 44
42 3.4 42
42 3.2 42
43 3.6 43
44 3.8 43
44 3.5 44
44 3.3 44
WARNING
!
ELECTRICAL SHOCK, FIRE OR EXPLOSION
HAZARD
Failure to follow this warning could result in personal
injury or death, or property damage.
Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF
position and install a lockout tag. There may be more
than one disconnect switch. Lock out and tag switch
with a suitable warning label. Verify proper operation
after servicing.
CAUTION
!
ELECTRICAL OPERATION HAZARD
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.
General
These instructions are written as if the furnace is installed in
an upflow application. An upflow furnace application is
where the blower is located below the combustion and
controls section of the furnace, and conditioned air is
discharged upward. Since this furnace can be installed in
any of the 4 positions shown in Figure 6, you must revise
your orientation to component location accordingly.
R A L G A S
0.64
Manifold Orifice Manifold
Pressure No. Pressure
3.6 42 3.7
3.3 42 3.4
3.8 42 3.2
3.5 43 3.6
3.8 43 3.4
3.5 44 3.7
3.3 44 3.4
3.1 44 3.2
3.6 42 3.7
3.3 42 3.4
3.7 42 3.2
3.5 43 3.6
3.7 44 3.8
3.5 44 3.6
3.3 44 3.4
3.6 42 3.7
3.3 42 3.4
3.7 43 3.8
3.4 43 3.5
3.7 44 3.8
3.4 44 3.5
A11253B
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