Johnson Controls YP9C Series Installation Manual page 11

Table 5: Ratings and physical/electrical data
Input
Btu/h
Max/Min
Cabinet/CFM
MBH
60B12 60/21 17.6/6.2
80B12 80/28 23.4/8.2
80C16 80/28 23.4/8.2
100C16 100/35 29.3/10.2
100C20 100/35 29.3/10.2
120D20 120/42 35.1/12.3
Max. Outlet
Btu/h
Air Temperature
Cabinet/CFM
°F
60B12 190
80B12 190
80C16 190
100C16 190
100C20 190
120D20 190
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.
Supply voltage connections
Junction
Box
Connect ground
lead to screw
Electrical Entry
L1-Hot
BLK
Neutral
WHT
Figure 13: Electrical wiring
1. Provide a power supply separate from all other circuits. Install over-
current protection and disconnect switch per local/national electrical
codes. The switch should be close to the unit for convenience in
servicing. With the disconnect or fused switch in the OFF position,
check all wiring against the unit wiring label. See the wiring diagram
in this manual.
2. Remove the screws retaining the wiring box cover. Route the power
wiring through the opening in the unit into the junction box with a
conduit connector or other proper connection. In the junction box
there will be 3 wires, a Black Wire, a White Wire. Connect the
power supply as shown on the unit-wiring label on the inside of the
blower compartment door or the wiring schematic in this section.
The black furnace lead must be connected to the L1 (hot) wire from
the power supply. The white furnace screw must be connected to
neutral. Connect the power supply ground to the green screw
(equipment ground) An alternate wiring method is to use a field pro-
vided 2 in. (5.1 cm) x 4 in. (10.2 cm) box and cover on the outside
of the furnace. Route the furnace leads into the box using a protec-
tive bushing where the wires pass through the furnace panel. After
making the wiring connections replace the wiring box cover and
screws. See Figure 13.
3. The furnace's control system requires correct polarity of the power
supply and a proper ground connection. See Figure 13.
Johnson Controls Ducted Systems
Output
Max/Min
kW MBH kW
58/20 17.0/5.9
77/27 22.6/7.9
78/27 22.8/7.9
97/34 28.4/10.0
97/34 28.4/10.0
116/40 34.0/11.7
Blower
°C HP Amps
88 1/2 7.7
88 1/2 7.7
88 3/4 9.6
88 3/4 9.6
88 1 12.8
88 1 12.8
Nominal Air Temperature Rise
Airflow Max Input
CFM 3 °F
m /min
1200 34.0 40-70
1200 34.0 40-70
1600 45.3 40-70
1600 45.3 40-70
2000 56.6 45-75
2000 56.6 45-75
Blower
Recommended
Wheel AFUE
Fuse or
Size
Circuit Breaker
Amps
Inches %
11 x 8 97.5 15
11 x 8 97.5 15
11 x 10 97.7 15
11 x 10 97.7 15
11 x 11 97.7 20
11 x 11 98.0 20
Important: The power connection leads and wiring box may be
relocated to the opposite side of the furnace. Remove the
screws and cut wire tie holding excess wiring. Reposition on the
opposite side of the furnace and fasten using holes provided.
Control wiring
This furnace can be connected to the wall thermostat and outdoor A/C
or heat pump using either conventional low voltage (24 VAC) thermo-
stat wiring OR using four-wire digital communications wiring. To use
conventional low voltage wiring, see the section below entitled "Con-
ventional Low Voltage Control Wiring". To use four-wire communica-
tions control wiring, see the section below entitled "Control Wiring using
Communicating Controls".
The Communicating System consists of several intelligent communicat-
ing components including the Communicating Thermostat Control
(touch-screen wall thermostat), modulating variable speed furnace, air
conditioner (15 and 18 SEER premium air conditioners) or heat pump
(15 and 18 SEER premium heat pumps), which continually communi-
cate with each other via a four-wire connection called the A-R-C-B.
Commands, operating conditions, and other data are passed continu-
ally between components over the A-R-C-B. See Figure 14. The result
is a new level of comfort, versatility, and simplicity.
In order to use this furnace in full communications (COMM) mode, it
MUST be installed with the matching touch-screen Communicating
Control (wall thermostat) and an outdoor air conditioner or heat pump
with a fully communicating control.
This furnace may also be used along with the Communicating Thermo-
stat Control and a non-communicating outdoor air conditioner through
the addition of a communicating Outdoor Aux Control board to the out-
door unit. This system allows full communication between the furnace
and thermostat and limited communication to the outdoor unit. See Fig-
ure 15.
This furnace may also be used along with the Communicating Thermo-
stat Control and a non-communicating outdoor air conditioner using
COMM between the furnace and thermostat and conventional 24V wir-
ing to the outdoor unit. This system allows full communication between
the furnace and thermostat but no digital communication with the out-
door unit. See Figure 16.
5750151-UIM-G-0423
Air Temperature Rise
Min Input
°C °F
22-39 20-50
22-39 20-50
22-39 20-50
22-39 20-50
25-42 25-55
25-42 25-55
Approximate
Gas Pipe
Total Unit
Connection,
Amps
NPT (in.)
11.5 1/2
11.5 1/2
13.4 1/2
13.4 1/2
16.6 1/2
16.6 1/2
°C
11-28
11-28
11-28
11-28
13-31
13-31
Operating
Weight
lb (kg)
113 (51)
119 (54)
134 (61)
140 (64)
143 (65)
152 (69)
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