Carrier 48TJD Specifications download pdf (Page 16)

MOTORMASTER® V CONTROL INSTALLATION

(48TJ024,028 UNITS)

Install Field-Fabricated Wind Baflles -- Wind baflles must

be field-fabricated for all units to ensure proper cooling cycle

operation at low ambient temperatures. See Fig. 21 for baflle

details. Use 20-gage, galvanized sheet metal, or similar corro-

sion-resistant metal for baffles. Use field-supplied screws to at-

tach baffles to unit. Screws should be l/4-in, diameter and

5/8-in. long. Drill required screw holes for mounting baffles.

To avoid dmnage to the refligerant coils and electrical com-

ponents, use lecommended screw sizes only. Use cme

when &'illing holes.

Install Motormaster V Controls -- The Motormaster V

(MMV) control is a motor speed control device which adjusts

condenser fan motor speed in response to declining liquid le-

frigerant pressure. A properly applied Motormaster V control

extends the operating range of air-conditioning systems and

permits operation at lower outdoor ambient temperatures.

The minimum mnbient temperatures at which the unit will

operate are:

TEMPERATURE OPERATING LIMITS -- F°

Standard Unit with I Unit with

Unit Low Ambient Kit I MMV Control40 25 -20

To operate down to the ambient temperatures listed,

Motormaster V controls (Fig. 23) must be added. Field-fabricat-

ed and installed wind baffles gue _dso required for _dl units (see

Fig. 21). The Motormaster V control permits operation of the

unit to an ambient temperature of-20 IF.The control regulates the

speed of 3-phase fan motors that gue compatible with the control.

These motors me factory installed.

See Table 6 for the Motormaster V control accessory pack-

age usage. Table 7 shows applicable voltages and motors.

Replacement of motor or fan blade IS NOT REQUIRED ON

CURRENT PRODUCTION UNITS since the control is

compatible with the factory-installed fan motors. Only field

wiring control is required.

Inst_dl the Motormaster V control per instructions supplied

with accessory.

TO PRESSURE

TRANSDUCER

FROM FUSE BLOCK

10 o---1

>- ca

u 1.2 1.3

13B

ooo

TO MOTOR(S)

Fig. 23 -- Motormaster V Control

Table 6 -- Motormaster V Control Package Usage

UNIT I VOLTAGE

208/230

48TJ024,028 460

575

ITEM DESCRIPTION

CRLOWAMB015A00

CR LOWAMB016A00

CRLOWAMB017A00

Table 7 -- Applicable Voltages and Motors

VOLTAGE COMPATIBLEMOTOR

208/230-3-60 HD52AK654

480-3-60 HD52AK654

575-3-60 HD52GE576

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 55 56

Comments to this Manuals

No comments

Carrier 48TJD Specifications Page 16

Comments to this Manuals

Related products and manuals for Split-system air conditioners Carrier 48TJD