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38AK,38AKS,38AQS008-012

48/50H J,48/50TJ,50LJQ008-014

Accessory Low Ambient Operation

Motormaster® III Control Package

50/60 Hz

Installation Instructions

Part Numbers: CAMOTOR3001AOO, CAMOTOR3002A00

CONTENTS

Page

SAFETY CONSIDERATIONS

...................................

GENERAL

..............................................................

1,2

INSTALLATION......................................................2-16

Step 1 — Install Motor .............................................2

Step 2 — Install Motormaster III

Controller

..............................................................

Step 3 — Install Sensor ...........................................3

Step 4 — Make Electrical Connections

.................

Step 5 — Install Field-Fabricated

Wind Baffies and Brackets

..................................

Step 6 — Restore Power to Unit..............................6

TROUBLESHOOTING

..........................................

SAFETY CONSIDERATIONS

Installation, start-up, and servicing of this equipment

can be hazardous due to system pressures, electrical com

ponents, and equipment location (roofs, elevated struc

tures, etc.)-

Only trained, qualified installers and service technicians

should install, start up, and service this equipment.

When working on this equipment, observe precautions in

the literature and on tags, stickers, and labels attached to

the equipment and any other safety precautions that may

apply.

A WARNING

Open all remote disconnects before servicing this equip

ment. Electrical shock could result in personal injury.

GENERAL

This book contains instructions for the installation,

start-up, and service of the Motormaster III control on

38AKS008-012, 38AQS008, 38AK008-012, 48/50TJ008-

014, 48/50HJ008-014, and 50LJQ008,012 units. The

Motormaster III control is not used on 50-Hz versions of

the 50HJ008-014 and 50LJQ008,012 units.

NOTE: The Motormaster III control is not used on 48/50HJ

and 48/50TJ units with 2 condenser fans. The control is

used on single condensing fan units only.

The Motormaster III accessory is UL (Underwriters’ Lab

oratories) and CSA (Canadian Standards Association)

approved on all split system and small rooftop electric cool

ing and gas heating/electric cooling units.

The Motormaster III device is a motor speed control de

vice which adjusts condenser fan motor speed in response

to declining liquid temperatures. A properly applied Motor-

master III control extends the operating range of air condi

tioning systems and permits operation at lower outdoor am

bient temperatures.

Table 1 shows the ambient temperature in cooling at which

each unit will operate without modification.

Table 1 — Unit Ambient Temperature Operation

UNIT

COMPRESSOR

CAPACITY

CONDENSER

TEMP

F(C)

MINIMUM

OUTDOOR

TEMP

F(C)

Small Rooftop Units

All 100%

90 (32)

25 (--1)

Split System Units

38AQS008 (60 Hz) 100%

90 (32)

55 (13)

38AK/AKS008

(50/60 Hz)

100%

90 (32)

60 (15)

38AKS009 (60 Hz) 100%

90 (32) 53 (12)

38AKS009 (50 Hz) 100% 90 (32) 57 (14)

38AKS012*

100%

90 (32)

48 (9)

(50/60 Hz)

67%

80 (27)

52 (11)

38AK012

(50/60 Hz)

100%

90 (32)

52 (11)

* Unit has one step of unloading.

To operate the units below the ambient temperatures in

Table 1, wind baffles and the Motormaster III control pack

age must be added. The Motormaster III control permits

operation of the unit to an ambient temperature of -20 F

(-29 C) for small rooftop units, and 0 F (-18 C) for split

system units.

The Motormaster III regulates the speed of 3-phase fan

motors which are compatible with the control. These

motors are included in the package. See Tables 2 and 3 for

the contents of the Motormaster III accessory packages.

The CAMOTOR3001A00 package contains a motor for

208/230 volt, 60 Hz and 220 volt, 50 Hz applications. The

CAMOTOR3002A00 package contains a motor for 460

and 575 volt, 60 Hz and 400 volt, 50 Hz applications. See

Fig. 1.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obiigations.

Book|1 |1 |1 |1 |4 |4 |4 |4 PC 111 Catalog No 533-803 Printed in U S A. Form 38/48/50-4SI Pg 1 1-95 Replaces: New

Tab la 1b 3a 5a 2a 5a 6a 6b

1 2 3 4 5 6 ... 23 24

Inhaltsverzeichnis

Seite 1 - Installation Instructions

38AK,38AKS,38AQS008-012 48/50H J,48/50TJ,50LJQ008-014 Accessory Low Ambient Operation Motormaster® III Control Package50/60 HzInstallation Instruction

Seite 2 - A WARNING

<n> © OC0.<a> © ®+® (3) + CD (DIF&cxEES ®MOTORMASTER III RELAYFig. 15 — Motormaster® III Relay Location 38AQS008MOTORMASTER III RELAYF

Seite 3 - A CAUTION

LEGENDMMSN — Motormaster® SensorOFC — Outdoor-Fan ContactorOFM — Outdoor-Fan MotorTB2 — Terminal Block 2NOTE: See wiring labei on unit for more detaii

Seite 4 - TOP VIEW

C2NOTE. See wiring label on unit for more details.Fig. 22 - Fan Power Wiring - 50HJ014; 50TJ014 - 208/230 V; 60 HzOFM — Outdoor-Fan MotorNOTE: See wir

Seite 5 - FRONT VIEW

GRA —VIO BLK—S BLK—•-------- BLK-BLU-MOTORMASTERHlCONTROLLER' BLK—SLEGENDCl — Compressor Contactor No. 1 MMSN — Motormaster® Sensor OFM — Outdoo

Seite 6

CONTROL WIRINGFig. 27 - Fan Control/Power Wiring - 50LJQ008-012 - 208/230 V and 460 V; 60 HzMMRFig. 28 — Fan Control/Power Wiring — 50LJQ008-012 — 575

Seite 7 - RETURN BEND END _.,r

DIMENSIONS (in.) LEFT BAFFLELEFTREARRIGHTDIMENSIONS (mm) LEFT BAFFLEUNIT38AB CD E F G H, UNIT ' 38A BC DEF G H1AK008;AKS008-012;AQS00828%29ys 30V

Seite 8

SIDE OF UNITNOTE: Dimensions in ( ) are millimetersSIDE BAFFLEDIMENSIONS (in.)UNIT AB C D EF GHJK48/50HJ,TJ008,009;50LJQ00843ye43^8 44% 35V4 5%14% 22V

Seite 9 - 50LJQ012

TROUBLESHOOTING1. The Motormaster® III control must be securely grounded to the cabinet of the unit to function properly.2. The power frequency s

Seite 11

с19

Seite 12 - TB3 — Terminal Block No. 3

Table 2 - Motormaster® III Control Package CAMOTOR3001A00, 208/230 v, 60 Hz and 220 v, 50 Hz ApplicationsQUANTITYITEMPART NO.1 Motormaster III Control

Seite 13 - MMSN — Motormaster® Sensor

0.130" (3.3mm)DIA0.134 (3.4mm)(6 PLACES TYPICAL)T TEMPLATE

Seite 14 - CONTROL WIRING

Seite 15 - DIMENSIONS (mm)

-16.05 — C407.7mm)DIA (4 PLACES TYPICAL)MOTORMASTER CONTROLLER TEMPLATE12.00-(305.0mm)20

Seite 16 - SIDE BAFFLE

о1=ош

Seite 17 - TROUBLESHOOTING

Seite 18 - Tab la 1b 3a 5a 2a 5a 6a 6b

Step 2 — Install Motormaster® III Controller1. Configure the control signal selection switch. Remove the cover of the Motormaster III con

Seite 19

TOP VIEWUJz<a.-COCOLUoo<Fig. 5 — Motormaster III Controller Location 50HJ,50LJQ,50TJ008-014 (With Single Point Box)LilZ<0.CO-COiiioo<KFig.

Seite 20 - T TEMPLATE

TOP VIEWFig. 8 — Motormaster® III Controller Location — 48HJJJ014, All Voltages; 48HJ009, 208/230, 460-3-60 OnlyFig. 10 — Motormaster III Controller L

Seite 21

Install the sensor for thermistor input control on the header tube designated in Fig. 13 and 14. Insert relay into socket. Install the Mot

Seite 22 - (305.0mm)

oo$qO\OjRETURN BEND END 48/50TJ008eViRETURN BEND END _.,r.38AK008.012, 38AKS008,009,012; 48/50HJ009 48/50TJ009Fig. 12 — Motormaster® III Sensor Loca

Seite 23

RETURN BEND END 48/50HJ012RETURN BEND END 48/50TJ012+RETURN BEND END 48/50HJJJ014Fig. 12 - Motormaster® III Sensor Locations — 38AK, AKS and 48/50HJ,T

Seite 24

RETURN BEND ENDFig. 13 — Motormaster® III Sensor Locations — 38AQS Unitsir!-SENSORLOCATION№RETURN BEND END 50LJQ0085s,7^yT-mVSENSORLOCATIONRETURN BEND

Verwandte Modelle: 38AKS

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Inhaltsverzeichnis

Verwandte Modelle: 38AKS

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