Johnson Controls Inc. Heating System AHE 用户手册
669997-UAI-D-1111
Johnson Controls Unitary Products
3
LOW VOLTAGE CONTROL CONNECTIONS
The 24 volt power supply is provided by an internally wired low
voltage transformer which is standard on all air handler models.
Field supplied low voltage wiring can exit the unit on the top
right hand corner or the right hand side panel. Refer to Figure 1.
Remove desired knockout and pierce foil faced insulation to
allow wiring to pass through. Use as small of a hole as possible
to minimize air leakage. Install a 7/8” plastic bushing in the
selected hole and keep low voltage wiring as short as possible
inside the control box. To further minimize air leakage, seal the
wiring entry point at the outside of the unit. The field wiring is to
be connected at the screw terminals of the control board.
voltage transformer which is standard on all air handler models.
Field supplied low voltage wiring can exit the unit on the top
right hand corner or the right hand side panel. Refer to Figure 1.
Remove desired knockout and pierce foil faced insulation to
allow wiring to pass through. Use as small of a hole as possible
to minimize air leakage. Install a 7/8” plastic bushing in the
selected hole and keep low voltage wiring as short as possible
inside the control box. To further minimize air leakage, seal the
wiring entry point at the outside of the unit. The field wiring is to
be connected at the screw terminals of the control board.
All wiring must comply with local and national electrical code
requirements. Read and heed all unit caution labels.
requirements. Read and heed all unit caution labels.
NOTICE
FIGURE 3: Line Power Connections for PSC Motors
FIGURE 4: Line Power Connections for Standard ECM Motors
ELECTRIC HEAT
WITHOUT CIRCUIT BREAKER
SINGLE SOURCE (2.5 - 10 KW)
GND. LUG
POWER
SUPPLY
SUPPLY
GND.
LUG
LUG
ELECTRIC HEAT
WITHOUT CIRCUIT BREAKER
3 PHASE (10 - 18 KW)
GND. LUG
POWER
SUPPLY
SUPPLY
GND.
LUG
LUG
1 PHASE ELECTRIC HEAT
WITH CIRCUIT BREAKER
AS SHIPPED FROM FACTORY
SINGLE SOURCE
(2.5 - 25 KW) - 25 KW SHOWN
GND. LUG
POWER
SUPPLY
SUPPLY
GND.
LUG
LUG
1 PHASE ELECTRIC HEAT
WITH CIRCUIT BREAKER
& BREAKER BAR REMOVED
MULTI-SOURCE (15 - 25 KW) - 25 KW SHOWN
GND. LUG
POWER
SUPPLY 1
SUPPLY 1
GND.
LUG
LUG
POWER
SUPPLY 2
POWER
SUPPLY 3
SUPPLY 2
POWER
SUPPLY 3
TYPICAL WIRING WITHOUT ELECTRIC HEAT
GND. LUG
POWER
SUPPLY
SUPPLY
GND.
LUG
LUG
POWER WIRING (208/230-1-60)
TERMINAL
BLOCK
BLOCK
TERMINAL
BLOCK
BLOCK
MAY BE 1, 2, OR 3
CIRCUIT BREAKERS
CIRCUIT BREAKERS
MAY BE 1, 2, OR 3
CIRCUIT BREAKERS
CIRCUIT BREAKERS
(JUMPER BAR)
CONNECT TRANSFORMER LEADS WITH
WIRE NUTS (TYPICAL ALL HEAT KITS)
WIRE NUTS (TYPICAL ALL HEAT KITS)
ELECTRIC HEAT
WITHOUT CIRCUIT BREAKER
SINGLE SOURCE (2.5 - 10 KW)
GND. LUG
POWER
SUPPLY
SUPPLY
GND.
LUG
LUG
ELECTRIC HEAT
WITHOUT CIRCUIT BREAKER
3 PHASE (10 - 18 KW)
GND. LUG
POWER
SUPPLY
SUPPLY
GND.
LUG
LUG
1 PHASE ELECTRIC HEAT
WITH CIRCUIT BREAKER
AS SHIPPED FROM FACTORY
SINGLE SOURCE
(2.5 - 25 KW) - 25 KW SHOWN
GND. LUG
POWER
SUPPLY
SUPPLY
GND.
LUG
LUG
1 PHASE ELECTRIC HEAT
WITH CIRCUIT BREAKER
& BREAKER BAR REMOVED
MULTI-SOURCE (15 - 25 KW) - 25 KW SHOWN
GND. LUG
POWER
SUPPLY 1
SUPPLY 1
GND.
LUG
LUG
POWER
SUPPLY 2
POWER
SUPPLY 3
SUPPLY 2
POWER
SUPPLY 3
TYPICAL WIRING WITHOUT ELECTRIC HEAT
GND. LUG
POWER
SUPPLY
SUPPLY
GND.
LUG
LUG
POWER WIRING (208/230-1-60)
TERMINAL
BLOCK
BLOCK
TERMINAL
BLOCK
BLOCK
MAY BE 1, 2, OR 3
CIRCUIT BREAKERS
CIRCUIT BREAKERS
MAY BE 1, 2, OR 3
CIRCUIT BREAKERS
CIRCUIT BREAKERS
(JUMPER BAR)