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Optional Hinged Access Doors —
When the optional
service package is ordered or the if the hinged access doors
option is ordered, the unit will be provided with external and
internal hinged access doors to facilitate service.
Four external hinged access doors are provided. All external
doors are provided with 2 large
1
/
4
turn latches with folding
bail-type handles. (Compressor access doors have one latch.) A
single door is provided for filter and drive access. One door is
provided for control box access. The control box access door is
interlocked with the non-fused disconnect which must be in the
OFF position to open the door. Two doors are provided for ac-
cess to the compressor compartment.
Two internal access doors are provided inside the filter/
drive access door. The filter access door (on the left) is secured
by 2 small
1
/
4
turn latches with folding bail-type handles. This
door must be opened prior to opening the drive access door.
The drive access door is shipped with 2 sheet metal screws
holding the door closed. Upon initial opening of the door, these
screws may be removed and discarded. The door is then held
shut by the filter access door, which closes over it.
LEGEND AND NOTES FOR FIG. 36 AND 37
LEGEND
AHA
—
Adjustable Heat Anticipator
BRK W/AT —
Breaks with Amp Turns
C
—
Contactor, Compressor
CAP
—
Capacitor
CB
—
Circuit Breaker
CC
—
Cooling Compensator
CH
—
Crankcase Heater
CLO
—
Compressor Lockout
COMP
—
Compressor Motor
CR
—
Control Relay
DAT
—
Discharge Air Thermistor
DM
—
Damper Motor
DU
—
Dummy Terminal
EC
—
Enthalpy Control
EQUIP
—
Equipment
FL
—
Fuse Link
FPT
—
Freeze Protection Thermostat
FU
—
Fuse
GND
—
Ground
HC
—
Heater Contactor
HPS —
High-Pressure Switch
HTR —
Heater
IFC
—
Indoor-Fan Contactor
IFCB —
Indoor-Fan Circuit Breaker
IFM
—
Indoor-Fan Motor
IFR
—
Indoor-Fan Relay
L
—
Light
LPS —
Low-Pressure Switch
LS
—
Limit Switch
NEC —
National Electrical Code
OAT —
Outdoor-Air Thermostat
OFC —
Outdoor-Fan Contactor
OFM —
Outdoor-Fan Motor
OP
—
Overcurrent Protection
PL
—
Plug Assembly
PRI
—
Primary
QT
—
Quadruple Terminal
SW
—
Switch
TB
—
Terminal Block
TC
—
Thermostat Cooling
TH
—
Thermostat Heating
TRAN —
Transformer
Terminal (Marked)
Terminal (Unmarked)
Terminal Block
Splice
Factory Wiring
Field Wiring
Option/Accessory Wiring
To indicate common potential
only; not to represent wiring.
NOTES:
1. Compressor and/or fan motor(s) thermally protected; 3-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 wire or its equivalent.
3. Jumpers are omitted when unit is equipped with EconoMi$er.
5. IFCB must trip amps is equal to or less than 140% FLA.
6. The CLO locks out the compressor to prevent short cycling on compressor over-
load and safety devices. Before replacing CLO, check these devices.
7. Number(s) indicates the line location of used contacts. A bracket over (2) num-
bers signifies a single-pole, double-throw contact. An underlined number signi-
fies a normally closed contact. Plain (no line) number signifies a normally open
contact.
Summary of Contents for 50HJ015-025
Page 20: ...20 Fig 29 MoistureMiser Operation Diagram...
Page 32: ...32 Fig 36 Typical Wiring Schematic 50HJ017 460v Shown...
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