5532522-UIM-B-0619
8
Johnson Controls Ducted Systems
The furnace must be isolated from the gas supply piping system by
closing its individual external manual shutoff valve during any pressure
testing of the gas supply piping system at pressures equal to or less
than 1/2 psig (3.5 kPa).
Gas piping may be connected from either side of the furnace using
either of the gas pipe entry locations shown in Figures 6 & 9.
HIGH ALTITUDE
This furnace is constructed at the factory for natural gas-fired operation
at 0 – 5,000 feet (0 – 1,524 m) above sea level.
SECTION V: ELECTRICAL POWER
ELECTRICAL POWER CONNECTIONS
Field wiring to the unit must be grounded. Electric wires that are field
installed shall conform to the temperature limitation for 63ºF (35ºC) rise
wire when installed in accordance with instructions. Refer to Table 4 in
these instructions for specific furnace electrical data.
The residential supply must have a bonded neutral.
Annual Fuel Utilization Efficiency (AFUE) numbers are determined in accordance with DOE Test procedures.
Wire size and over current protection must comply with the National Electrical Code (NFPA-70-latest edition) and all local codes.
The furnace shall be installed so that the electrical components are protected from water.
FIGURE 9:
Gas Piping
GROUND
UNION
DRIP
LEG
MANUAL
SHUT-OFF
VALVE
GROUND
UNION
DRIP
LEG
UPFLOW
DRIP
LEG
DRIP
LEG
GROUND
UNION
MANUAL
SHUT-OFF
VALVE
GROUND
UNION
IMPORTANT:
An accessible manual shutoff valve must be installed
upstream of the furnace gas controls and within 6 feet (1.8 m) of the
furnace.
CAUTION
The gas valve body is a very thin casting that cannot take any exter-
nal pressure. Never apply a pipe wrench to the body of the gas valve
when installing piping. A wrench must be placed on the octagon hub
located on the gas inlet side of the valve. Placing a wrench to the
body of the gas valve will damage the valve causing improper opera-
tion and/or the valve to leak.
!
CAUTION
Use copper conductors only.
!
Table 4:
Ratings & Physical / Electrical Data
Input
Output
Nominal
Airflow
AFUE
Air Temp.
Rise
Max.
Outlet
Air Temp
Blower
Blower
Size
Recommended
Fuse or Circuit
Breaker Amps
Total
Unit
Amps
Gas Pipe
Connection,
NPT
MBH
kW MBH kW
CFM
m
3
/min
ºF
ºC
ºF
ºC
HP
Amps
60
17.6
48
14.1
1200
34.0
80.0
35-65
19-36
190
88
1/2
6.4
11 x 8
15
9.0
1/2"
80
23.5
64
18.8
1600
45.3
80.0
35-65
19-36
190
88
1/2
6.4
11 x 10
15
9.0
1/2"
100 29.3
80
23.4
2000
56.6
80.0
35-65
19-36
190
88
3/4
8.8
11 x 11
15
11.4
1/2"
