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1183746-UIM-B-0215
5. The gas supply should be a separate line and installed in accor-
dance with all applicable safety codes. After the gas connections
have been completed, open the main shut-off valve admitting nor-
mal gas pressure to the gas valve. Check all joints for leaks with
soap solution or other material suitable for the purpose. NEVER
USE AN OPEN FLAME.
WARNING
!
FIRE OR EXPLOSION HAZARD
Failure to follow the safety warning exactly could result in serious
injury, death or property damage.
Never test for gas leaks with an open flame. use a commercially
available soap solution made specifically for the detection of leaks to
check all connections. A fire or explosion may result causing property
damage, personal injury or loss of life.
6. The furnace and its equipment shutoff valve must be disconnected
from the gas supply system during and pressure testing of that sys-
tem at test pressures in excess of 1/2 psi (3.48 kPA)
7. The furnace must be isolated from the gas supply piping system by
closing its individual manual shut-off valve before conducting any
pressure testing of the gas supply piping system at test pressures
equal to or less than 1/2 psig (3.48 kPA).
FLUE VENT AND AIR INTAKE HOOD
The flue vent hood and air intake hoods are shipped loose. These hoods
must be installed to assure proper unit operation. The hoods must be fas-
tened to the outside of the side gas control/electrical compartment with
the screws provided. See Figure 8.
Table 9: Natural Gas Application Data
Available On Models
2, 2-1/2 Tons
3 Tons
4, 5 Tons
2, 2-1/2, 3, 3-1/2 Tons
3, 3-1/2 Tons
4, 5 Tons
4, 5 Tons
1. Heating capacity valid for elevations up to 2000 feet above sea level. For elevations above 2,000 feet, rated capacity should be reduced by 4% for each 1,000 feet
above sea level.
3
2. Based on 1075 BTU/Ft.
.
3. The air flow must be adequate to obtain a temperature rise within the range shown. Continuous return air temperature should not be below 55°F.
1
Table 10: Propane
(LP) Gas Application Data
Available On Models
2, 2-1/2 Tons
3 Tons
4, 5 Tons
2, 2-1/2, 3, 3-1/2 Tons
3, 3-1/2 Tons
4, 5 Tons
4, 5 Tons
1. Propane applications are accomplished by field installation of a Propane Conversion Accessory, Model 1NP0701 for 2 to 3.5 Ton units and Model 1NP0702 for 4
and 5 Ton units.
2. Heating capacity valid for elevations up to 2,000 feet above sea level. For elevations above 2,000 feet, rated capacity should be reduced by 4% for each 1,000 feet
above sea level.
3
3. Based on 2500 BTU/Ft.
.
4. The air flow must be adequate to obtain a temperature rise within the range shown. Continuous return air temperature should not be below 55°F.
10
1
Output (MBH)
Input (MBH)
High Fire
High Fire
50
50
65
75
100
100
125
101
Input Capacity
Output Capacity
2
(MBH)
(MBH)
High Fire/Low Fire
High Fire/Low Fire
50
50
65
75
100
100
125
101
!
Flue hood surfaces may be hot.
New Graphic to be added later
FIGURE 8: Flue Vent Outlet Air Hood
!
The flue exhaust hood must be properly installed and within the rec-
ommended clearances. Further communications and action must be
given to the home or building owner(s) to eliminate any unauthorized
human contact around this area during the heating cycle. Flue hood
surfaces and the immediate area reach high temperatures during the
heating cycle.
2
Gas Rate
3
Ft.
/Hr.
High Fire/Low Fire
41
46
41
46
53
60
61
70
81
93
81
93
116
3
Gas Rate
3
Ft.
/Hr.
High Fire/Low Fire
41
20
41
20
53
26
61
30
81
40
81
40
50
WARNING
AIR INTAKE HOOD
AIR INTAKE SCREEN
EXHAUST HOOD
CAUTION
Temp. Rise ºF
Number of
At Full Input
Burners
Min.
2
40
2
35
2
40
3
40
4
40
3
40
4
40
Temp. Rise ºF
Number of
At Full Input
Burners
Min.
2
40
2
35
2
40
3
40
4
40
3
40
4
40
Johnson Controls Unitary Products
A0284-001
3
Max.
70
65
70
70
70
70
70
4
Max.
70
65
70
70
70
70
70
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