AHA
C
CAP
CB
CO
OH
CLO
COMP --
OR
DM
DU
EQUIP --
FL
FPT
FU
GND
HC
HPS
HTR
IAQ
IFC
IFM
IFR
L
LOR
LPS
LS
NEC
OAT
OCCUP --
OFC
OFM
PL
PRI
QT
RAT
SW
TB
TC
TH
TRAN
o
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COMPONENT ARRANGEMENT
(A)
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(B) (C)
0_°:°I ='%=,
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LEGEND
Adjustable, Heat Anticipator
Contactor, Compressor
Capacitor
Circuit Breaker
Cooing Compensator
Crankcase Heater
Compressor Lockout
Compressor Motor
Control Relay
Damper Motor
Dummy Terminal
Equipment
Filament
Freeze Protection Thermostat
Fuse
Ground
Heater Contactor
High-Pressure Switch
Heater
Indoor Air Quality Sensor
Indoor Fan Contactor
Indoor Fan Motor
Indoor Fan Relay
Light
Lockout Relay
Low-Pressure Switch
Limit Switch
National Electrical Code
Outdoor Air Temperature Sensor
Occupancy Sensor
Outdoor Fan Contactor
Outdoor Fan Motor
Plug Assembly
Prknary
Quadruple Terminal
Return Air Temperature Sensor
Switch
Terminal Block
Thernlostat Cooling
Thermostat Heating
Transformer
Terminal (Marked)
Terminal (Unmarked)
'I ,IiI_
=IBII
PL_
COnTrOL
BOX
RL_-8
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[_ Terminal Block
• Splice
-- Factory Wiring
Field Control Wiring
.... Accessory or Optional Wiring
To indicate common potential only;
not to represent wiring.
Economizer Motor
Remote POT Field Accessory
OAT Sensor
Disch Air Sensor
RAT Accessory Sensor
Low Ambient Lockout Switch
NOTES:
1. Compressor and/or fan motor(s) thermally protected three phase
motors protected against primary single phasing conditions.
2. If any of the original wire furnished must be replaced, it must be
replaced with Type 90 ° C or its equivalent.
3. Jumpers are omitted when unit is equipped with economizer.
4. IFCB must trip amps is equal to or less than 140% FLA.
5. On TRAN1 use BLK lead for 460-v power supply and ORN lead for
575w power supply.
6. The CLO locks out the compressor to prevent short cycling on corm
pressor overload and safety devices; before replacing CLO check
these devices.
7. Number(s) indicates the line location of used contacts. A bracket
over (2) numbers signifies a single pole, double throw contact. An
underlined number signifies a normally closed contact. Plain (no
line) number signifies a normally open contact.
8. 620 Ohm, 1 watt, 5% resistor should be removed only when using
differential enthalpy or dry bulb.
9. If a separate field-supplied 24 v transformer is used for the IAQ
sensor power supply, it cannot have the secondary of the trans-
former grounded.
10. OAT sensor is shipped inside unit and must be relocated in the field
for proper operation.
11. For field installed remote minimum position POT. remove black wire
jumper between P and P1 and set control minimum posgion POT to
the minimum position.
Fig. 49 -- Typical Component Arrangement (50HJ015 Unit Shown)
40
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