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Figure 9, Single-phase, 1-3 ton model schematic, typical, Installation 11 – Emerson Precision Cooling For Business-Critical Continuity Figure i User Manual

Page 15

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Installation

11

Figure 9

Single-phase, 1-3 ton model schematic, typical

3

2

4

1

C1

HG1

BR

W

BL

1

4

2

3

BK

BK

R

R
R

LLSV

BK

BK

R

'FM'

FAN

MOTOR

2C1

1C1

R

BK

RHTR

BK

BK

R

R

R

BK

BR

Y

Optional on
Selected Units

Supplied on
1-Ton PFC
Models Only

BR

C R S

COMP

1 5

2

PR

BDR

C

CSR

A

B

Y

Conductors Field-Supplied
(See Note 5)

HGBP Signal
Output
Connection

EVAPORATOR UNIT

Unit Alarm
Input
Connection

24V Ground

Earth Ground
By Others

1-Phase Line
Voltage Supply
By Others
(See Notes 1 & 3)

OUTDOOR CONDENSING MODULE

See Note 6

HG1

CHTR

BK

BK

BK

BR

CAP2

CAP1

CAP3

BR

L1

L2

HP1

HP2

HGSV

24V Power
Supply
From Unit
Min 40 Va

1. All units 208/230V, 1 phase. On 208/230V units installed
in Canada only, CSA requires that L1 and L2 are non-neutral
supply conductors. L1 et L2 pour conducteurs d'alimentation
non-neutres. On other units, L2 is designated neutral. See
unit name plate and installation manual for main supply wiring
information. Use copper conductors onl y.
2. Use copper conductors onl y. See unit nameplate for main supply
wire sizing data. Wire per local codes.
3. A remote disconnect switch is to be field-supplied and mounted
within sight of the condensing unit. See unit nameplate for voltage
and amperage requirements.
4. All motors have internal line break overload protectors.

Three-phase motors protected for primary single-phasing conditions.

25,
27

Factory-Supplied Line Voltage
Field-Installed Line Voltage Wiring
Optional Line Voltage Wiring
Factory-Supplied 24V NEC Class 2 Wiring
Optional 24V Wiring
Factory-Supplied 24V NEC Class 2 Wiring
Factory-Supplied Earth Grounding Wire
Pigtail Leads 24V Wiring
Terminal Strip Connection

OR - Orange
R - Red
BR - Brown
P - Purple
GN - Green
Y - Yellow
BL - Blue
BK - Black
W - White

WIRE COLOR CODE

Insulation Color

GN / Y

Tracer Color

191642
Rev. 0

NOMENCLATURE

Standard Devices
BDR -- Bleed Resistor
C1 -- Condenser Contactor
CAP1 -- Compressor Capacitor
Run
CAP2 -- Fan Motor Capacitor
CAP3 -- Compressor Capacitor
Start
CHTR -- Compressor Heater
COMP -- Compressor
FM -- Fan Motor
HP1 -- High Pressure Switch
(Auto Reset)
HP2 -- Pressure Switch Receiver
(Auto Reset)
LLSV -- Liquid Line Solenoid Valve
PR -- Potential Relay
RHTR -- Receiver Heater

Optional Devices
CSR -- Compressor Start Resistor
HG1 -- Hot Gas Relay
HGSV -- Hot Gas Solenoid Valve

5. Terminals 1,2,3, and 4 are for connection of control circuit from
evaporator unit. Wiring by others to be NEC Class 2 and sized
for 1V maximum drop.
6. Wire '1' is connected to the grounded side of the 24V Class 2 circuit.

Grounding Lug Connection