Carrier 50YQ User Manual download pdf (Page 5)

Table 2 — Unit Electrical Data (60-Hz)

i-r'

OPER

COMPRESSOR

IFM

OFM

BRANCH CIRCUIT

VOLTAGE*

Min

Max

Wire

Min Gnd

Max Fuse

Min

Circuit

Amps

MODEL

V/PH

Max Min

LRA

RLA

BCSC

FLA FLA

Wire

Size

Wire

Size

or HACR

Type Ckt»*

(AWG)t

Bkr Amps

50YQ024

154

—

2 4 1 3 10 48

}— -1

35 23 0

50YQ030

16 1

—

24 1 3 10

23 8

^ 50YQ036

230/1

253

207

18 2

—

3 6

2 1 10 38 10 45

28 5

50YQ042

94 21.0

21 2

1 9 8

52 10 50

33 3

50YQ048

106

25 0 27 9 49

2 2

71 10

42 0

50YQ060

208/230/1 253

187tt

150

29 2/33 4

35 3

6 4 20

52 5

50YQ042

200/3 220

180

79 146

16 6 49 20 10

55 10 40

27 6

50YQ048

87 16 9 183 49

2 2

10 45 30 0

50YQ036

200/230/3 253

180

12 5/11 7

— 3 6

2 1 10 74

10 30 21.3/25 3

50YQ042

230/3

253

207

gT~

U6 143

49”

i¥~ 67

id 24 7

50YQ048 70

14 8 16 4 4 9 2 2 10 58

10 40 27 6

50YQ042

460/3 506

414

g 3

1 9 ‘

104 14 15

12 4

50YQ048 35

7.5 8 8

4 9 2 2 14 90

12 20

14 6

50YQ042

575/3 632 518

6 8

49 1 9

14 164 14

15 11 2

50YQ048 30 60

64 49 2 2

14 141 14 15

10 9

AWG

BCSC

FLA

IFM

LRA

OFM

RLA

American Wire Gage

Branch Circuit Selection Current

Full Load Amps

Indoor Fan Motor

Locked Rotor Amps

Outdoor Fan Motor

Rated Load Amps

HACR — Heating Air Conditioning & Refrigeration

ELECTRIC HEATER INSTALLATION — For

complete heater installation data, refer to accessory

electric heater Installation, Start-Up and Service

Instructions.

GROUND LUG

(IN SPLICE BOX)

l-PHASE

CONN

DISCONNECT

PER NEC

--GROUND LEAD-

________________

^Permissible limits of the voltage range at which units will operate

satisfactorily

tCopper wire sizes based on 60 C Use copper or copper-clad aluminum wire

only Use latest NEC for copper-clad aluminum conductor sizing

^Required when using nonmetallic conduit

“Maximum dual element fuse

ttMinimum voltage is 197 when outdoor ambient temperature exceeds

105 F

Heat Anticipator Settings for Room Thermo

stat — Set anticipator settings for room thermostat

according to Table 3. These settings may be changed

slightly to provide a greater degree of comfort for a

particular installation.

Table 3 — Thermostat Anticipator Setting

BLK

-----------

(

-YEL

----------

50YQ HEAT PUMP

GROUND LUG

(IN SPLICE BOX)

UNIT

50YQ024,

030,036,

042,048,

060

FIRST STAGE

ANTICIPATOR

SETTING

Fixed

ACCESS.

ELECTRIC

HTR (Kw)

240 V 280 V

5 0 3 75

7 5

5 6

100

7 5

15 0 11 3

20 0 150

25 0 188

27 0

22 25

SECOND STAGE

ANTICIPATOR

SETTING

-gg— —

3-PHASE

CONN

DISCONNECT

PER NEC

------

GROUND LEAD-

LI----------------------------------------------

L2-

______________________________

-YPl

------------------------

■ -^-BLK--

BLU

-----------

-YEL

------------

50YQ HEAT PUMP

_____

Field Wiring Splice Connections

NOTE Use copper or copper-clad aluminum wire

Fig. 7 — Line Power Connections

START-UP

The 50YQ unit compressors are equipped with

crankcase heaters. It is recommended that heater be

energized a minimum of 24 hours before starting unit.

To energize heater only, set thermostat at OFF posi

tion; turn on unit main power at disconnect switch.

Accessory Outdoor Thermostat provides adjust

able outdoor control of accessory electric heaters

of 15 Kw and over. This thermostat makes contact

when a drop in outdoor temperature occurs. It ener

gizes a stage of electric heat when the outdoor tem

perature setting is reached, provided the room

thermostat is on the second stage of heating. One

outdoor thermostat is recommended for each stage

of electric heat after the first stage. Set the outdoor

thermostat(s) progressively lower for each stage.

Refer to heat load of building and unit capacity to

determine the correct outdoor thermostat settings.

The accessory emergency heat relay is required

when 2 outdoor thermostats are used. It is auto

matically energized by the manually operated emer

gency heat switch in the indoor thermostat subhase.

The indoor thermostat locks out compressor and the

relay bypasses the outdoor thermostats for electric

heater operation during heat pump shutdown.

When one outdoor thermostat is used, an emergency

heat relay is not required. The emergency heat

switch in the indoor thermostat subbase bypasses

outdoor thermostat, locks out compressor and acti

vates electric heater.

184

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Carrier 50YQ User Manual Page 5

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