Carrier 90Ma Mf Mu Users Manual

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2015-01-24

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62--10458--00

Models

90MA/MF/MU, Design Series Two

Beginning Serial Number C00400

INSTALLATION

OPERATION & SERVICE

Marine/Industrial

Single Package

Cooling Unit

Carrier Corporation 2000 DPrinted in U. S. A. 0700

OPERATION AND SERVICE MANUAL

MARINE/INDUSTRIAL SINGLE PACKAGE

COOLING UNIT

MODELS

90MA/MF/MU, Design Series Two

Beginning Serial Number C00400

Carrier Transicold, Carrier Corporation, P.O. Box 4805, Syracuse, N.Y. 13221 U. S. A.

Carrier Refrigeration Operations, A member of the United Technologies Corporation family. Stock symbol UTX.

Safety-1 62--10458--00

SAFETY SUMMARY

GENERAL SAFETY NOTICES

The following general safety notices supplement the specific warnings and cautions appearing elsewhere in this

manual. They are recommended precautions that must be understood and applied during operation and maintenance

of the equipment covered herein. The general safety notices are presented in the following three sections labeled: First

Aid, Operating Precautions and Maintenance Precautions. A listing of the specific warnings and cautions appearing

elsewhere in the manual follows the general safety notices.

FIRST AID

An injury, no matter how slight, should never go unattended. Always obtain first aid ormedical attention immediately.

OPERATING PRECAUTIONS

Always wear safety glasses.

Keep hands, clothing and tools clear of the evaporator and condenser fans.

No work should be performed on the unit until all circuit breakers, start-stop switches are turned off, and power supply

is disconnected.

Always work in pairs. Never work on the equipment alone.

In case of severe vibration or unusual noise, stop the unit and investigate.

MAINTENANCE PRECAUTIONS

Beware of unannounced starting of the evaporator fan. Do not open the evaporator access panels before turning power

off, disconnecting and securing the power source.

Be sure power is turned off before working on motors, controls, solenoid valves and electrical control switches. Tag

circuit breaker and power supply to prevent accidental energizing of circuit.

Do not bypass any electrical safety devices, e.g. bridging an overload, or using any sort of jumper wires. Problems

with the system should be diagnosed, and any necessary repairs performed, by qualified service personnel.

In case of electrical fire, open circuit switch and extinguish with CO2(never use water).

SPECIFIC WARNING AND CAUTION STATEMENTS

To help identify the label hazards on the unit and explain the level of awareness each one carries, an explanation is

given with the appropriate consequences:

WARNING -- means to warn against hazards or unsafe conditions which could result in severe personal injury or

death.

CAUTION -- means to warn against potential hazard or unsafe practice which could result in product or property

damage.

The statements listed below are applicable to the unit and appear elsewhere in this manual. These recommended

precautions must be understood and applied during operation and maintenance of the equipment covered herein.

WARNING

Never reach into unit while fan is running. Lock open and tag unit disconnect before working on fan.

Remove fuses and take them with you after noting this on tag.

WARNING

Follow all Safety codes. Wear safety glasses and rubber gloves when using inhibited hydrochloric acid

solution.

WARNING

Lock open and tag unit disconnect before working on fan motor. Remove fuses and take them with you

after noting this on tag.

CAUTION

Compressor crankcase heater must be energized for 24 hours prior to start up to prevent compressor

bearing damage.

Safety-2

62--10458--00

CAUTION

Sharp edges of coil fins are exposed. To prevent injury, cover top of evaporator with cardboard or a few

layers of heavy tape.

CAUTION

To avoid coil damage, cover evaporator face with plywood or other rigid sheet material. If any coil fins

are mashed or bent, straighten with a coil fin comb of the proper tooth spacing (refer to “coil fins/inch”

in Table 1 through Table 2). Check for refrigerant leaks.

CAUTION

Before attempting to remove fan motors or motor mounts, place a piece of plywood over evaporator

coils to prevent coil damage.

i 62--10458--00

TABLE OF CONTENTS

PARAGRAPH NUMBER Page

GENERAL SAFETY NOTICES Safety-1.....................................................

FIRST AID Safety-1......................................................................

OPERATING PRECAUTIONS Safety-1......................................................

MAINTENANCE PRECAUTIONS Safety-1..................................................

SPECIFIC WARNING AND CAUTION STATEMENTS Safety-1.................................

1. INTRODUCTION 1..............................................................

2. MODEL CHART 1...............................................................

3. INSTALLATION 1...............................................................

3.1 Inspect Unit 1................................................................

3.2 Protect Unit from Damage 1.....................................................

3.3 Provide Unit Support 1.........................................................

3.4 Install Accessory Heating Coil (if applicable) 1......................................

3.5 Rig and Place Unit 1...........................................................

3.6 Install Accessory Plenum (If Supplied) 1...........................................

3.7 Install Ventilation--Air Ductwork (If required) 1.....................................

3.8 Install Return Air Ductwork (If required) 1.........................................

3.9 Check Return--Air Filters 5......................................................

3.10 Align Fan Shaft and Wheel 5....................................................

3.11 Check Compressor Spring Mounts (008 & 012 size only) 6............................

3.12 Make Condenser Connections 6..................................................

3.13 Install Condensate Drain Line 7..................................................

3.14 Make Electrical Connections 7...................................................

4. OPERATION 8..................................................................

4.1 To Start Unit 8...............................................................

4.2 To Shut Down Unit 8..........................................................

4.3 Sequence Of Operation 8.......................................................

5. SERVICE 9.....................................................................

5.1 Return--Air Grille Removal 9....................................................

5.2 Access Panel Removal 9........................................................

5.3 Evaporator Fan Adjustment 9....................................................

5.4 Return--Air Filter 10............................................................

5.5 Condensate Drain 10............................................................

5.6 Evaporator Coil 10.............................................................

5.7 Water Regulating Valve 10.......................................................

5.8 Condenser 10.................................................................

5.9 Refrigerant Charging 11.........................................................

5.10 Evaporator Fan Motor Removal 12................................................

5.11 Pressure Relief Device 12........................................................

5.12 Crankcase Heater 12............................................................

5.13 Cycle--LocTM -- Protection Device 12..............................................

5.14 Discharge and Suction Pressure Switches 12.........................................

5.15 Oil Charge 12.................................................................

62--10458--00

LIST OF ILLUSTRATIONS

FIGURE NUMBER Page

Figure 1 Base Unit Interior Details (Typical) 1................................................

Figure 2 Unit Dimensions 5...............................................................

Figure 3 Horizontal Wheel Centering 5......................................................

Figure 4 Concentric Wheel Alignment 5.....................................................

Figure 5 Connection Locations 6...........................................................

Figure 6 Typical Condenser Water Piping 6...................................................

Figure 7 Condensate Drain Trap 7..........................................................

Figure 8 Fan Pulley Adjustment 9..........................................................

Figure 9 Gravity Flow Method 10...........................................................

Figure 10 Forced Circulation Method 11......................................................

Figure 11 Charging Charts 11...............................................................

Figure 12 Mounting Base 13...............................................................

Figure 13 Wiring Schematic -- 90MA/MF/MU004/006 14........................................

Figure 14 Component Arrangement -- 90MA/MF/MU004/006 15..................................

Figure 15 Wiring Schematic -- 90MA/MF/MU008/012 16........................................

Figure 16 Component Arrangement -- 90MA/MF/MU008/012 17..................................

LIST OF TABLES

TABLE NUMBER Page

Table 1 90MA/MF/MU Physical Data -- Refrigerant 22 2.........................................

Table 2 90MA/MF/MU Physical Data -- Refrigerant 407C 3.......................................

Table 3 90MA/MF Physical Data -- Refrigerant 134a 4...........................................

Table 4 Recommended Line Sizes, Remote Condenser 7.........................................

162--10458--00

1. INTRODUCTION

The 90M series single--package cooling units (See

Figure 1) are designed to provide air conditioning

aboard marine vessels and in industrial applications.

The 90MA units are fitted with sea water cooled

condensers while the 90MF units are fitted with fresh

water cooled condensers. Both units are factory

charged, wired and piped. The 90MU units are similar

except they are configured for use with a remote

mounted condenser.

An accessory discharge plenum may be installed to

provide free--blow into the conditioned space. Also, an

accessory electric, hot water or steam coil heater may be

installed to provide comfort heating.

(90MA/MF

ONLY)

Figure 1 Base Unit Interior Details (Typical)

2. MODEL CHART

This manual covers 90M design series two units as

shown in the following model chart.

1234 567891011

90MA3 1 2 --- 6 2 1

PRODUCT

CODE

MA - 90/10 Copper Nickel

Condenser

MF - Copper Condenser

MU - Condenserless

2-R-22

3 - R-134a

4 - R-407C

NOMINAL COOLING

CAPACITY (R--22)

VOLTAGE

5 - 208/230-3-60

6 - 460-3-60

9 - 400-3-50

PACKAGING

DESIGN

SERIES

MODEL

3. INSTALLATION

To install the unit, do the following:

3.1 Inspect Unit

Check unit against shipping order. Inspect carefully for

concealed shipping damage. If shipment is damaged or

incomplete, file claim with transportation company and

advise Carrier Transicold immediately.

3.2 Protect Unit from Damage

To maintain warranty, protect unit against adverse

weather, theft, or vandalism on job site.

3.3 Provide Unit Support

Refer to Figure 2 and Table 1 through Table 2 for unit

size and weight. If desired, construct a frame of I--beams

or angle iron that adequately supports unit. See

Figure 12.

3.4 Install Accessory Heating Coil (if applicable)

Electric heaters are installed at the top of the unit. Water

or steam coil must be installed through the back of the

unit as described in the Installation Instructions shipped

with the accessory coil.

3.5 Rig and Place Unit

NOTE

Install accessories before placing unit.

a. Provide space around unit for service, filter access,

and overhead clearance as indicated in Figure 2.

b. Move and store unit in upright position.

c. Use slings with spacer under base skid to prevent pan-

el damage when using hoist.

d. Units as shipped are adequately dampened against

vibration. If additional dampening is desired, place

sponge rubber or rubber mat, between deck and base

of unit or install vibration isolators.

e. Unit should be level. Unit leveling tolerance is 1/8

inch per linear foot in any direction.

3.6 Install Accessory Plenum (If Supplied)

Use plenum as template to mark hole locations in top

panel. Drill 5/32--in. (0.4 cm) holes in top panel at

marked locations and attach plenum with screws

supplied.

3.7 Install Ventilation--Air Ductwork

(If required)

Connect ventilation ducts to flanges on outside--air

supply opening (See Figure 2) using a flexible

connection. Attach ductwork to ship structure and

insulate with fiberglass and vapor barrier to reduce

sound transmission and prevent vapor condensation.

Weatherproof external ductwork, joints, and openings

in accordance with applicable codes. Ducts passing

through an unconditioned space must be insulated and

covered with a vapor barrier.

3.8 Install Return Air Ductwork (If required)

The unit back panel is to be field cut for alternate

return--air (or outdoor--air inlet) opening as indicated in

Figure 2. To install ductwork:

a. Cut out the alternate return--air opening as required.

62--10458--00

Table 1 90MA/MF/MU Physical Data -- Refrigerant 22

R--22 -- English Units R--22 -- Metric Units

BASE UNIT 90MA/MF/MU UNITS

English (Metric) 204 206 208 212 204 206 208 212

NOMINAL CAPACITY Tons (kW) 3 5 7.5 10 10.5 17.6 26.4 35.1

OPERATING WEIGHT

Base Unit -- 90MA/MF Pounds (kg) 390 427 895 950 177 194 406 431

Base Unit -- 90MU Pounds (kg) 330 360 835 890 150 163 379 404

Discharge Plenum Pounds (kg) 25 25 50 50 11.3 11.3 22.7 22.7

COMPRESSOR TYPE Welded Hermetic

Scroll

Semi--Hermetic

Reciprocating

Welded Hermetic

Scroll

Semi--Hermetic

Reciprocating

Quantity of Cylinders -- -- 46-- -- 4 6

Quantity of Unloading Cylinders -- -- 02-- -- 0 2

Quantity of Capacity Steps -- -- 12-- -- 1 2

DISCHARGE PRESSURE SWITCH

Opens -- 90MA/MF psig (kPa) 39510 272569

Closes -- 90MA/MF psig (kPa) 29520 2034138

Opens -- 90MU psig (kPa) 4267293748

Closes -- 90MU psig (kPa) 32020 2206138

SUCTION PRESSURE SWITCH

Opens psig (kPa) 27418628

Closes psig (kPa) 67746248

OPERATING CHARGE -- 90MA/MF pounds (kg) 3.1 5.3 11.2 10 1.4 2.4 5.1 4.5

CONDENSER -- 90MA/MF

Number & Type 1....Tube In Tube

Water Volume gallon (liter) 0.39 0.86 2.42 1.48 3.3 9.2

EVAPORATOR AIR FAN Adjustable, Belt Driven Centrifugal: 1750 RPM Motor @ 60 Hz

Nominal Flow cfm (m3/h) 1200 2000 3000 4000 1698 2830 4245 5660

Standard Speed Range RPM 525-750 647-915 495-700 600-850 427-652 593-762 412-583 500-708

Maximum Allowable RPM 1050

Belt Quantity / Pulley Pitch Diameter inches (cm) 1/8.0 1/6.4 1/8.5 1/7.0 1 / 20.3 1 / 16.3 1 / 21.6 1 / 17.8

Motor Pulley Pitch Diameter Range inches (cm) 2.4to3.4 6.1to8.6

Motor Nominal Rating(@60 Hz)...Frame Size

Standard horse power 1/3...56 3/4...56 1...56 2...56 .25 / 56 .56 / 56 .75 / 56 1.5 / 56

Alternate(SeeNote1) horse power 3/4...56 1...56 2...56 3...56 .56 / 56 .75 / 56 1.5 / 56 2.2 / 56

Alternate(SeeNote1) horse power -- -- -- -- 3...56 -- -- -- -- -- -- 2.2 / 56 -- --

EVAPORATOR COIL 3/8 (.95 cm) OD, Copper Tubes, Aluminum Fins

Tube Type Prime

Quantity of Rows...fin Spacing fins/inch(cm) 2...14.4 3...14.4 3...12.5 2...5.7 3...5.7 3...4.9

Face Area sq ft (sq m) 5 5 7.3 8.5 0.46 0.46 0.68 0.79

RETURN AIR FILTERS Factory Supplied, Cleanable

Quantity...Size inches (cm) 2...16 x 25 x 1 4...16 x 20 x 1 2...40.6x63.5x2.5 4...40.6x50.8x2.5

CONDENSER CONNECTIONS

Water Inlet (bottom) & Outlet (top) inches FPT 1/2 3/4 1 1 1/2 3/4 1 1

Maximum Working Pressure (refrigerant side) psig (kPa) 400 2758

CONDENSATE DRAIN CONNECTIONS inches FPT 3/4 3/4

ACCESSORY HEATING COILS

HOT WATER

Quantity of Rows...fin spacing fins/inch(cm) 1...15 1...15 2...14 2...14 1...5.9 1...5.9 2...5.5 2...5.5

Face Area sq ft (m) 5 5 6 6 0.46 0.46 0.56 0.56

Water Inlet (top) & Outlet Connection (bottom) inches (cm) 7/8 ODF 1--1/4 MPT 7/8 ODF 1--1/4 MPT

STEAM

Quantity of Rows...fin spacing fins/inch(cm) SeeNote2 1...14 1...14 SeeNote2 1...5.5 1...5.5

Face Area sq ft (m) SeeNote2 6.9 6.9 SeeNote2 0.64 0.64

Water Inlet (top) & Outlet Connection (bottom) inches (cm) SeeNote2 1--1/4 MPT SeeNote2 1--1/4 MPT

LEGEND

FPT = Female Pipe Thread MPT = Male Pipe Thread ODF = Outside Diameter Female

NOTES:

1. Motors and drives other than those furnished with unit must be purchased separately. Contact your Carrier Transicold represen-

tative.

2. Accessory heating coil in 004 and 006 units is combination hot water/steam. See hot water data.

362--10458--00

Table 2 90MA/MF/MU Physical Data -- Refrigerant 407C

R--407C -- English Units R--407C -- Metric Units

BASE UNIT 90MA/MF/MU UNITS

English (Metric) 404 406 408 412 404 406 408 412

NOMINAL CAPACITY Tons (kW) 3 5 7.5 10 10.5 17.6 26.4 35.1

OPERATING WEIGHT

Base Unit -- 90MA/MF Pounds (kg) 390 427 895 950 177 194 406 431

Base Unit -- 90MU Pounds (kg) 330 360 835 890 150 163 379 404

Discharge Plenum Pounds (kg) 25 25 50 50 11.3 11.3 22.7 22.7

COMPRESSOR TYPE Welded Hermetic

Scroll

Semi--Hermetic

Reciprocating

Welded Hermetic

Scroll

Semi--Hermetic

Reciprocating

Quantity of Cylinders -- -- 46-- -- 4 6

Quantity of Unloading Cylinders -- -- 02-- -- 0 2

Quantity of Capacity Steps -- -- 12-- -- 1 2

DISCHARGE PRESSURE SWITCH

Opens -- 90MA/MF psig (kPa) 39510 272569

Closes -- 90MA/MF psig (kPa) 29520 2034138

Opens -- 90MU psig (kPa) 4267293748

Closes -- 90MU psig (kPa) 32020 2206138

SUCTION PRESSURE SWITCH

Opens psig (kPa) 27418628

Closes psig (kPa) 67746248

OPERATING CHARGE -- 90MA/MF pounds (kg) 3.1 5.3 11.2 10.0 1.4 2.4 5.1 4.5

CONDENSER -- 90MA/MF

Number & Type 1....Tube In Tube

Water Volume gallon (liter) 0.39 0.86 2.42 1.48 3.3 9.2

EVAPORATOR AIR FAN Adjustable, Belt Driven Centrifugal: 1750 RPM Motor @ 60 Hz

Nominal Flow cfm (m3/h) 1200 2000 3000 4000 1698 2830 4245 5660

Standard Speed Range RPM 525-750 647-915 495-700 600-850 427-652 593-762 412-583 500-708

Maximum Allowable RPM 1050

Belt Quantity / Pulley Pitch Diameter inches (cm) 1/8.0 1/6.4 1/8.5 1/7.0 1 / 20.3 1 / 16.3 1 / 21.6 1 / 17.8

Motor Pulley Pitch Diameter Range inches (cm) 2.4to3.4 6.1to8.6

Motor Nominal Rating(@60 Hz)...Frame Size

Standard horse power 1/3...56 3/4...56 1...56 2...56 .25 / 56 .56 / 56 .75 / 56 1.5 / 56

Alternate(SeeNote1) horse power 3/4...56 1...56 2...56 3...56 .56 / 56 .75 / 56 1.5 / 56 2.2 / 56

Alternate(SeeNote1) horse power -- -- -- -- 3...56 -- -- -- -- -- -- 2.2 / 56 -- --

EVAPORATOR COIL 3/8 OD, Copper Tubes, Aluminum Fins

Tube Type Prime Prime

Quantity of Rows...fin Spacing fins/inch(cm) 2...14.4 3...14.4 3...12.5 2...5.7 3...5.7 3...4.9

Face Area sq ft (sq m) 5 5 7.3 8.5 0.46 0.46 0.68 0.79

RETURN AIR FILTERS Factory Supplied, Cleanable Factory Supplied, Cleanable

Quantity...Size inches (cm) 2...16 x 25 x 1 4...16 x 20 x 1 2...40.6x63.5x2.5 4...40.6x50.8x2.5

CONDENSER CONNECTIONS

Water Inlet (bottom) & Outlet (top) inches FPT 1/2 3/4 1 1 1/2 3/4 1 1

Maximum Working Pressure (refrigerant side) psig (kPa) 400 2758

CONDENSATE DRAIN CONNECTIONS inches FPT 3/4 3/4

ACCESSORY HEATING COILS

HOT WATER

Quantity of Rows...fin spacing fins/inch(cm) 1...15 1...15 2...14 2...14 1...5.9 1...5.9 2...5.5 2...5.5

Face Area sq ft (m) 5 5 6 6 0.46 0.46 0.56 0.56

Water Inlet (top) & Outlet Connection (bottom) inches (cm) 7/8 ODF 1--1/4 MPT 7/8 ODF 1--1/4 MPT

STEAM

Quantity of Rows...fin spacing fins/inch(cm) SeeNote2 1...14 1...14 SeeNote2 1...5.5 1...5.5

Face Area sq ft (m) SeeNote2 6.9 6.9 SeeNote2 0.64 0.64

Water Inlet (top) & Outlet Connection (bottom) inches (cm) SeeNote2 1--1/4 MPT SeeNote2 1--1/4 MPT

LEGEND

FPT = Female Pipe Thread MPT = Male Pipe Thread ODF = Outside Diameter Female

NOTES:

1. Motors and drives other than those furnished with unit must be purchased separately. Contact your Carrier Transicold represen-

tative.

2. Accessory heating coil in 004 and 006 units is combination hot water/steam. See hot water data.

62--10458--00

Table 3 90MA/MF Physical Data -- Refrigerant 134a

R--134a -- English Units R--134a -- Metric Units

BASE UNIT 90MA/MF UNITS

English (Metric)

308 312 308 312

NOMINAL CAPACITY Tons (kW) 5.5 819.3 28.1

OPERATING WEIGHT

Base Unit Pounds (kg) 895 950 406 431

Discharge Plenum Pounds (kg) 50 50 22.7 22.7

COMPRESSOR TYPE -- Reciprocating Semi--Hermetic Semi--Hermetic

Quantity of Cylinders 4646

Quantity of Unloading Cylinders 0202

Quantity of Capacity Steps 1212

DISCHARGE PRESSURE SWITCH

Opens psig (kPa) 33510 231069

Closes psig (kPa) 23520 1620138

SUCTION PRESSURE SWITCH

Opens psig (kPa) 734821

Closes psig (kPa) 22515235

OPERATING CHARGE pounds (kg) 11.2 10 5.1 4.5

CONDENSER

Number & Type 1....Tube In Tube 1....Tube In Tube

Water Volume gallon (liter) 2.42 9.2

EVAPORATOR AIR FAN Adjustable, Belt Driven Centrifugal: 1750 RPM Motor @ 60 Hz

Nominal Flow cfm (m3/h) 3000 4000 4245 5660

Standard Speed Range RPM 495--700 600--850 412--583 500--708

Maximum Allowable RPM 1050

Belt Quantity / Pulley Pitch Diameter inches (cm) 1/8.5 1/7.0 1 / 21.6 1 / 17.8

Motor Pulley Pitch Diameter Range inches (cm) 2.4to3.4 6.1to8.6

Motor Nominal Rating(@60 Hz)...Frame Size

Standard horse power 1...56 2...56 .75 / 56 1.5 / 56

Alternate(SeeNote1) horse power 2...56 3...56 1.5 / 56 2.2 / 56

Alternate(SeeNote1) horse power 3...56 -- -- 2.2 / 56 -- --

EVAPORATOR COIL 3/8 OD(0.95) cm, Copper Tubes, Aluminum Fins

Tube Type Prime

Quantity of Rows...fin Spacing fins/inch(cm) 3...12.5 3...14.9

Face Area sq ft (sq m) 7.3 8.5 0.68 0.79

RETURN AIR FILTERS Factory Supplied, Cleanable

Quantity...Size inches (cm) 4...16 x 20 x 1 4...40.6 x 50.8 x 2.5

CONDENSER CONNECTIONS

Water Inlet (bottom) & Outlet (top) inches FPT 1111

Maximum Working Pressure (refrigerant side) psig (kPa) 400 2758

CONDENSATE DRAIN CONNECTIONS inches FPT 3/4 3/4

ACCESSORY HEATING COILS

HOT WATER

Quantity of Rows...fin spacing fins/inch(cm) 2...14 2...14 2...5.5 2...5.5

Face Area sq ft (m) 6 6 0.56 0.56

Water Inlet (top) & Outlet Connection (bottom) inches (cm) 1--1/4 MPT 1--1/4 MPT

STEAM

Quantity of Rows...fin spacing fins/inch(cm) 1...14 1...14 1...5.5 1...5.5

Face Area sq ft (m) 6.9 6.9 0.64 0.64

Water Inlet (top) & Outlet Connection (bottom) inches (cm) 1--1/4 MPT 1--1/4 MPT

LEGEND

FPT = Female Pipe Thread MPT = Male Pipe Thread ODF = Outside Diameter Female

NOTES:

1. Motors and drives other than those furnished with unit must be purchased separately. Contact your Carrier Transicold represen-

tative.

562--10458--00

UNIT 004 006 008,012

36.19(919)

21.88(556)

59.12(1501)

48(1219)

29.62(752)

69.50(1765)

DSEE NOTE 2

E 24(610)

13.81(351)

13.13(333)

0.75(19)

12.5(318)

16.44(418)

15(381)

0.75(19)

10.62(270)

19.38(492)

17.25(438)

1.31(33)

11.44(291)

17.06(433)

20.50(521)

17(432)

31.88(810)

2.06(52)

10(254)

15.56(395)

23.25(591)

25.37(644)

17(432)

42.62(1083)

3(76)

12.50(318)

16(406)

NOTES:

1. Certified dimension drawings available upon request

2. Minimum required clearance at back of unit is zero.

Clearance above and at right (90MA008,012 only) and at leftof

unit depends on space required for accessory plenum,

ductwork, condenser piping, accessory heater piping,

condensate drain line and power wiring

3. Water connections are located on leftside of unit (Refer to

“Make Condenser Connections”, Condensate drain

connections are located on left side of unit for 004 & 006, and

on both sides of unit for 008 & 012.

Figure 2 Unit Dimensions

b. Attach a one--inch (2.5 cm) flange or attach a flanged,

flexible duct connection directly to unit.

If an outdoor makeup air damper is to be installed, at-

tach it directly to unit back panel and install flexible

connection between damper and remaining duct-

work. Use accepted ductwork installation proce-

dures. Follow all applicable codes.

c. Completely blank off the standard return--air opening

with a field--fabricated filler panel. The panel must be

removable for service access. Refer to paragraph 5.1.

3.9 Check Return--Air Filters

Ensure filters shipped with unit are in place. Never

operate unit without return air filters in place.

DIMENSION “D” MUST BE EQUAL ALL AROUND

Figure 3 Horizontal Wheel Centering

3.10 Align Fan Shaft and Wheel

HORIZONTAL WHEEL CENTERING -- Allwheelsmustbe

horizontally centered between the inside edges of their

fan scroll ventures (Figure 3). Adjust as follows:

a. Loosen set screws holding wheel to shaft.

b. Center the wheel by sliding it horizontally.

c. Re--tighten set screws.

CONCENTRIC ALIGNMENT -- Shaft and wheels must be

concentrically centered with the venturi (Figure 4).

Shaft bearings are supported by bearing supports. If

shaft and wheels are concentrically misaligned from

shipping shock, it is possible to re--bend bearing support

arms to original positions. Replace the bearing support

if it has been extensively damaged during shipping.

Figure 4 Concentric Wheel Alignment

62--10458--00

90MA/MF004/006 UNITS

90MU004/006 UNITS

90MA/MU008/012 UNITS

90MU008/012 UNITS

UNIT A* B* C* D* E F G

90MA/MF004 1/2 1/2 -- -- ¾FPT -- -- -- -- 1.75

90MA/MF006 3/4 -- -- 3/4 -- -- -- -- (45)

90MA/MF008/012 1” 1” -- -- -- -- -- --

90MU004 -- -- -- -- -- -- 1/2 flare 1/2 flare

90MU006 -- -- -- -- -- -- 1/2 flare 1/2 flare

90MU008/012 -- -- -- -- -- -- 5/8 O.D. 3/4 O.D.

* A = Condenser In, B & C = Condenser Out, D = Condensate, all Female Pipe Thread, E = Liquid Refrigerant (field cut), F =

Refrigerant Discharge (field cut), G = Electrical Opening

Figure 5 Connection Locations

3.11 Check Compressor Spring Mounts

(008 & 012 size only)

The compressors are held rigid in shipment by bolts

extending through a washer, grommet and compressor

foot into a weld nut. Loosen each bolt (4 per

compressor) until compressor floats freely on springs.

Then re--tighten bolts until there is slight pressure on the

neoprene gasket. This will steady the compressor and

prevent start and stop rocking.

The compressors have reversible oil pumps that operate

in either direction; therefore, the direction of rotation

need not be checked.

3.12 Make Condenser Connections

UNIT MOUNTED CONDENSER (90MA/MF) -- Condenser

water inlet and outlet connections are shown in

Figure 5. Piping arrangements for condenser cooling

water are shown in Figure 6.

Connect condenser water supply and return lines as

indicated. When connecting water lines, hold the

condenser inlet and outlet stubs firmly with a wrench at

the female pipe thread hex fitting to prevent twisting.

Do not use water lines smaller than connection sizes

shown in Figure 5. Observe all applicable plumbingand

sanitary codes.

Install water--regulating valve in water supply line

outside cabinet as follows.

SeeFigure5

Figure 6 Typical Condenser Water Piping

a. Route regulating valve capillary with its flare nut to

the port on refrigerant discharge line (Figure 1), us-

ing any convenient unused opening on side of unit.

Use a grommet in panel to prevent chafing of capil-

lary.

b. Remove cap from discharge line fitting.

c. Remove cotter pin taped to discharge line fitting. In-

sert pin, split end first, into regulating valve flare.

762--10458--00

Table 4 Recommended Line Sizes, Remote Condenser

UNIT LENGTH OF RUN

(90MU) 0--25 26--50 51--75 76--100

(

)

DISCH LIQUID DISCH LIQUID DISCH LIQUID DISCH LIQUID

004 1/2 (1.3) 1/2(1.3) 5/8(1.6) 1/2(1.3) 5/8(1.6) 1/2(1.3) 7/8(2.2) 1/2(1.3)

006 5/8(1.6) 1/2(1.3) 7/8(2.2) 1/2(1.3) 7/8(2.2) 1/2(1.3) 7/8(2.2) 1/2(1.3)

008 7/8(2.2) 5/8(1.6) 7/8(2.2) 5/8(1.6) 7/8(2.2) 5/8(1.6) 1-1/8(2.9) 5/8(1.6)

012 7/8(2.2) 5/8(1.6) 1-1/8(2.9) 5/8(1.6) 1-1/8(2.9) 5/8(1.6) 1-1/8(2.9) 5/8(1.6)

NOTES:

1. Line sizes given in inches (cm).

2. Line sizes should never be smaller than cooling unit connection size.

3. A nominal number of fittings has been considered in determining line sizes. Smaller line sizes may be considered

if run is simple and few fittings are used.

d. Hold flare tightly against fitting while connecting

flare nut. Round end of cotter pin will depress core of

fitting. The opened fitting allows refrigerant pressure

to act on water regulating valve. Tighten nut to pre-

vent leakage. Fitting automatically seals when nut is

removed.

REMOTE MOUNTED CONDENSER (90MU) -- I n s t a l l

remote mounted condenser in accordance with the

installation instructions provided with condenser.

Connection locations for liquid and discharge lines are

shown in Figure 5. Recommended line sizes are given

in Table 4. Additional instructions can be found in

Carrier System Design Manual, Part 3, for standard

refrigeration piping techniques. On 008 and 012 size

units, secure discharge line to bracket at unit outlet

using proper clamp from supplied fastener package

Condenserless (90MU) units are shipped with a

refrigerant holding charge. After refrigerant

connections are made, leak test, reclaim refrigerant,

evacuate, and charge system as described in paragraph

5.9.

3.13 Install Condensate Drain Line

Install a trapped condensate drain line at unit drain

connection. The drain requires standard pipe connected

to condensate pan nipple(s). Figure 7 shows proper trap

design.

Determine design negative static pressure. This

pressure is not the same as fan total static pressure,

which includes pressure losses downstream as well as

upstream from the evaporator air fan. Always assume

the worst conditions, such as having return air filters

clogged with debris.

Referring to Figure 7, differential 1 must be equal to or

larger than negative static pressure at design operating

condition. Store enough water in trap to prevent losing

seal. Differential 2 must be equal to or larger than

one--half the maximum negative static pressure. To

avoid loss of seal when the fan starts, differential 3 must

be greater than the maximum negative static pressure.

Figure 7 Condensate Drain Trap

Do not use drain line smaller than 3/4 inch. Use hole(s)

provided in panel for drain line. Pitch drain line

downward toward scupper. Installation of a plugged tee

is recommended for cleaning. Fill trap with water to

make an air seal. Observe all sanitary requirements.

3.14 Make Electrical Connections

GENERAL -- Provide an adequate fused disconnect

switch within sight of the unit. Provision for locking

switch open (OFF) is advisable to prevent power from

being turned on when unit is being serviced.

POWER WIRING -- Conduit opening for all units is on left

side of unit near control box. Connect field power wires

at the compressor contactor.

Supply voltage must be in accordance with nameplate

voltage. Voltage between phases must be balanced

within 2% and current within 10% with compressor

running. Correct improper voltage or phase imbalance.

Unit failure as a result of operation on improper line

voltage or excessive phase imbalance constitutes abuse

and shall void the Carrier warranty. Use the following

formula to determine the percent voltage imbalance.

62--10458--00

CONTROL WIRING -- On extended voltage (208/230--v)

units, the control transformer is factory wired for 208--v

usage. If unit is to be used on 230--v system, reconnect

primary wiring on transformer. See Figure 13 (004/006

size) or Figure 15 (008/012 size).

On all units, the thermostat is factory installed. A

sensing element is provided in the return air. To wire

these units to a remote thermostat, or to a remote control

switch and thermostat, refer to unit Wiring Diagram or

contact your Carrier Transicold representative.

4. OPERATION

CAUTION

Compressor crankcase heater must be ener-

gized for 24 hours prior to start up to prevent

compressor bearing damage.

4.1 To Start Unit

a. Thoroughly inspect exterior of unit. Clean and dust

up debris, then wash with mild soap and water solu-

tion.

b. On 008 & 012 size units, ensure compressor dis-

charge, suction and liquid service valves are open.

The valves are accessible from the front of the unit.

To open valve, turn counterclockwise. After opening,

replace and tighten valve cap to prevent leakage.

Check oil level in compressor sight glass. If level is

below glass, add oil to bring level to approximately

1/4 glass. If level is above bottom of glass, do not re-

move any oil until the crankcase heater has been ener-

gized for at least twenty--four hours.

c. With selector switch in OFF position, turn main pow-

er on. Leave power on for 24 hours so that crankcase

heater can drive off accumulated refrigerant.

d. If desired, the selector switch may be placed in the

FAN position during the crankcase warm--up period.

On first start--up, check fan speed (Table 1 through

Table 2) and rotation (Figure 1). If fan requires ad-

justment, refer to paragraph 5.3.

e. Allow crankcase heater to remain energized (unit

power on) for at least 24 hours. Open any valves in

condenser cooling water supply lines and then set se-

lector switch at COOL position. If room temperature

is above thermostat setting compressor will start. On

first start--up, set water regulating valve. (Refer to

paragraph5.7.)

f. Set thermostat for comfort as desired.

4.2 To Shut Down Unit

a. Turn selector switch to OFF position. Do not shut off

main power except to service unit. The crankcase

heater is operative only when main power is on. (Re-

fer to paragraph 5.12).

b. If unit is to be used for winter heating, set selector

switch at HEAT position and re--set thermostat at de-

sired setting.

c. If unit may be exposed to freezing temperatures, drain

water from condenser and water piping. Add a non-

corrosive antifreeze to residual water in system.

4.3 Sequence Of Operation

Unit operation is dependent on the position of the mode

selector switch. (See note 3, Figure 14 or Figure 16.)

Operation sequence for each switch position is provided

in the following paragraphs.

OFF POSITION: With correct voltage supplied at the

field power supply terminals, see Figure 13 or Figure 15

power flows through normally closed crankcase heater

relay (CHR) contacts (CHR, 4/5) to energize the

crankcase heater (CH).

TO PLACE THE UNIT IN THE FAN MODE: The

switch (SW) is placed in the FAN position to supply 24

volt control power, to energize indoor fan contactor

(IFC). Energizing IFC closes contacts (IFC, 11/21,

12/22 & 13/23) to energize the motor. Operation of the

crankcase heater is maintained.

TO PLACE THE UNIT IN THE COOL MODE: The

switch (SW) is placed in the COOL position. With

thermostat (T--LOW) calling for cooling (closed to

contacts R & W) control power flows from TRAN

through T--LOW, SW and compressor lockout (CL)

normally closed contacts to the discharge pressure

switch (DPS). On 008/012 size units, flow continues

through the compressor internal protector (IPC),

compressor overloads (OLA & OLB) and the suction

pressure switch (SPS), to energize CHR. On 004/006

size units, flow continues directly thorough the suction

pressure switch to energize CHR.

Energizing CHR opens contacts CHR 4--5 to

de--energize CH and closes contacts CHR 1--3 and

energize the compressor contactor (CC). Energizing CC

closes its contacts to start the compressor motor (C).

Operation of the indoor fan motor (IFM) is maintained.

On 90MU units, power also flows from terminal TB1--5

to energize condenser fan relay (CFR). Energizing CFR

closes its contacts to supply power to the field supplied

condenser fan relay.

012 size units arefitted with a two stage cooling system.

On these units, if thermostat switch T--HIGH is also

calling for cooling, power flows through thermostat

962--10458--00

switch T--HIGH to energize liquid line solenoid (LLS)

[to activate the full evaporator coil and all compressor

cylinders]. If thermostat switch T--HIGH is not calling

for cooling, power flows to energize compressor

unloader solenoid (US) [to unload compressor

cylinders].

When room temperature falls to the cutout point of

T--LOW, switch T--LOW opens to de--energize CHR,

stopping the compressor motor and energizing CH. The

machine enters a stand--by state, ready to restart

automatically on room thermostat call for cooling.

If any safety deviceopens (CLO, SPS, DPS, IP, OLA or,

OLB) relay CHR is de--energized, stopping the

compressor motor and energizing the crankcase heater.

TO PLACE THE UNIT IN THE HEAT MODE: The

switch (SW) is placed in the HEAT position. With

thermostat (T--LOW) calling for heating (closed to

contacts R & B), 24 volt control power flows through

manual reset temperature cutout MC to energize safety

relay H2. Power also flows through air flow switch (AS)

and automatic cutout (AC) to energize operating relay

(H1). Energizing relays H1 and H2 closes contacts to

energize the heaters.

Placing SW in the FAN position de--energizes all

cooling or heating control circuits in the same manner as

activation of a safety switch. Placing SW in the OFF

position also de--energizes IFC to stop the indoor fan

motor.

5. SERVICE

WARNING

Never reach into unit while fan is running.

Lock open and tag unit disconnect before

working on fan. Remove fuses and take them

with you after noting this on tag.

CAUTION

Sharp edges of coil fins are exposed. To pre-

vent injury, cover top of evaporator with

cardboard or a few layers of heavy tape.

CAUTION

To avoid coil damage, cover evaporator face

with plywood or other rigid sheet material.

If any coil fins are mashed or bent, straight-

en with a coil fin comb of the proper tooth

spacing (refer to “coil fins/inch” in Table 1

through Table 2). Check for refrigerant

leaks.

5.1 Return--Air Grille Removal

a. Pull grille out from top.

b. Pull grille up to release hinge pins from lower panel.

c. To reassemble, reverse procedure.

5.2 Access Panel Removal

a. Remove return--air grille as described above.

b. Remove the panel fastening screws now exposed.

c. Pull out and down to remove top panel.

d. Pull out and up to remove bottom panel.

5.3 Evaporator Fan Adjustment

WARNING

Never reach into unit while fan is running.

Lock open and tag unit disconnect before

working on fan. Remove fuses and take them

with you after noting this on tag.

SPEED ADJUSTMENT -- The fan motor pulleys are

factory set at the fan speeds listed in Table 1, Table 3 or

Table 2. to change fan speed, do the following:

a. Shut off unit power supply.

b. Loosen fan belt by loosening fan motor from mount-

ing bracket. Do not loosen fan motor mounting brack-

et from unit.

c. Loosen movable pulley flange set screw (Figure 8).

d. Screw movable flange toward fixed flange to increase

fan speed and away from fixed flange to decrease

speed. Increasing fan speed increases load on motor.

Do not exceed maximum allowable fan speed or mo-

tor full load amps indicated on motor nameplate.

e. Set movable flange set screw at nearest flat of pulley

hub and tighten set screw.

f. Check pulley alignment and belt tension adjustment

as described below.

g. Check fan operation. Repeat above procedure as re-

quired.

Figure 8 Fan Pulley Adjustment

PULLEY ALIGNMENT -- Shut off unit power supply.

Loosen fan motor pulley set screws and slide fan pulley

along fan shaft. Make angular alignment by loosening

motor from mounting bracket (See Figure 8).

62--10458--00

BELT TENSION ADJUSTMENT -- Shut off unit power

supply. Loosen fan motor from mounting bracket. Do

not loosen motor mounting bracket from unit. Move fan

motor up or down until proper belt tension is achieved

(approximately 3/4--in. deflection with 8--pound

tension at midpoint of belt span).

Lubrication -- Fan motor and fan shaft bearings are

lubricated for the life of the bearings. No re--lubrication

is required

5.4 Return--Air Filter

Inspect filters twice monthly and clean as required by

operating conditions. Filter size and type are listed in

Table 1, Table 3 or Table 2. To clean filters flush with

hot water or steam or soak in a mild water solution of

soap or detergent. Refer to filter manufacturer’s

instructions as applicable. Do not operate unit without

return--air filters in place.

5.5 Condensate Drain

Clean the drain line and unit drain pan at the start of each

cooling season. Check flow by pouring water into drain.

Be sure trap is filled as shown in Figure 7 to maintain an

air seal.

5.6 Evaporator Coil

WARNING

Never reach into unit while fan is running.

Lock open and tag unit disconnect before

working on fan. Remove fuses and take them

with you after noting this on tag.

Remove dirt and debris from evaporator coil as required

by condition. Clean coil with a stiff brush, vacuum

cleaner or compressed air. Use a fin comb of the correct

tooth spacing (Refer toTable 1, Table 3 or Table 2 for

coil fins/inch) when straightening mashed or bent coil

fins.

5.7 Water Regulating Valve

PREPARATION FOR OPERATION.

a. Open the water regulating valve inlet and outlet isola-

tion valves.

b. Close the water regulating valve bypass valve.

ADJUSTMENT

a. The compressor discharge pressure is controlled by

the water regulating valve and may be monitored by

observing liquid line pressure.

NOTE

Adjustments to the water regulating valve must

be made slowly, allowing ample time for re-

sponse and stabilization.

b. Install a calibrated gauge at the liquid line service

port. Operating liquid line range for R--22 units is 250

to 270 psig (1724 to 1862 kPa), for R--134a units is

155 to 180 psig (1069 to 1241 kPa) and for R--407C is

267 to 288 psig (1841 to 1986 kPa). If pressure read-

ing is below operating range, rotate the square head

adjusting screw counterclockwise; this will increase

spring tension, decrease water flow and increase pres-

sure.

If pressure reading is above operating range, rotate

the square head adjusting screw clockwise; this will

decrease spring tension, increase water flow and de-

crease pressure.

c. Only the water regulating valve opening point is ad-

justable. The closing point is 3 to 7 psig below the

opening point and is non--adjustable.

5.8 Condenser

Condensers may require cleaning of water--deposited

scale.

WARNING

Follow all Safety codes. Wear safety glasses

and rubber gloves when using inhibited hy-

drochloric acid solution.

Clean condensers with an inhibited hydrochloric acid

solution. The acid can stain hands and clothing, attack

concrete and, without inhibitor, can attack steel. Cover

surroundings to guard against splashing. Vapors from

vent pipe are not harmful, but take care to prevent liquid

from being carried over by the gases.

Warm solution acts faster, but cold solution is just as

effective if applied for a longer period.

Figure 9 Gravity Flow Method

GRAVITY FLOW METHOD

a. Disconnect condenser piping at unit, including isola-

tion valves and water regulating valve.

b. Fill condenser as shown in Figure 9. Follow acid

manufacturer’s instructions. When condenser is full,

allow solution to remain overnight

c. Drain condenser and flush with clean water.

FORCED CIRCULATION METHOD

a. Disconnect condenser piping at unit, including isola-

tion valves and water regulating valve.

b. Fill system as shown in Figure 10. Follow acid

manufacturer’s instructions. Fully open vent pipe

when filling system. The vent may be closed when

system is full and pump is operating.

11 62--10458--00

c. Regulate flow to condenser with a supply line valve.

If pump is a non--overloading type, the valve may be

fully closed while pump is running. For average scale

deposit, allow solution to remain in condenser over-

night. For heavy scale deposit, allow 24 hours.

d. Drain condenser and flush with clean water.

Figure 10 Forced Circulation Method

5.9 Refrigerant Charging

90MA/MF -- These units are shipped with a full

operating charge. If recharging is necessary (complete

charge lost), weigh in amount of refrigerant indicated on

unit nameplate and in Table 1, Table 3 or Table 2.

If unit has partial charge, it must be recharged by

removing existing charge and recharging by weighing

in the required amount of refrigerant.

90MU004 & 006 -- These units, used with remote

condensers, are shipped with a holding charge only. To

charge:

a. Open discharge and liquid service valves.

b. Leak test, reclaim refrigerant and evacuate.

c. Using standard refrigerant charging techniques and

charging charts (Figure 11) add refrigerant as re-

quired to maintain proper operating conditions.

90MU008 & 012 -- These units, used with remote

condensers, are shipped with a holding charge only. To

charge:

a. Open discharge line, liquid line, compressor dis-

charge and compressor suction service valves.

b. Leak test, reclaim refrigerant and evacuate.

c. Add sufficient refrigerant vapor to permit continuous

operation after starting unit.

d. Start unit. Using standard charging techniques, add

refrigerant as required to maintain normal operating

conditions. Use charging chart supplied with con-

denser, if available. If information is not available,

block off enough of condenser or set water regulating

valve as applicable to maintain a discharge pressure

of 220 psig (1517 kPa) for R--22 units or 233 psig

(1607 kPa) for R--407C units. Charge to a clear sight

glass.

90MU004 UNITS R--22

90MU006 UNITS R--22

70 75 80 85 90 95 100

180

200

220

240

260

280

300

320

340

360

380

400

TEA60F/16C

TEA70F/21C

TEA80F/27C

TEA90F/32C

TEA100F/38C

TEA110F/43C

TEA120F/49C

1379

1241

2069

1517

1655

1793

1930

2206

2344

2482

2620

2758

483 517 552 587 655622 690

COMPRESSOR DISCHARGE PRESS -- PSIG

COMPRESSOR DISCHARGE PRESS -- kPa

PSIG

kPa

COMPRESSOR SUCTION PRESSURE

(TEA = TEMPERATURE, ENTERING AIR)

kPa

PSIG

TEA110F/43C

TEA100F/38C

TEA90F/32C

TEA80F/27C

TEA70F/21C

TEA60F/16C

517483

180

COMPRESSOR SUCTION PRESSURE

552

75 80 587

85 655

622

90 690

100

(TEA = TEMPERATURE, ENTERING AIR)

1379 200

1241

2069 300

1655

1517

1930

1793

220

240

260

280

2344

2206

2620

2482

320

340

360

380

2758 400

COMPRESSOR DISCHARGE PRESS -- PSIG

COMPRESSOR DISCHARGE PRESS -- kPa

90MU004 UNITS R--407C

90MU006 UNITS R--407C

Figure 11 Charging Charts

62--10458--00

5.10 Evaporator Fan Motor Removal

a. Shut off unit main power supply.

WARNING

Lock open and tag unit disconnect before

working on fan motor. Remove fuses and

take them with you after noting this on tag.

CAUTION

Before attempting to remove fan motors or

motor mounts, place a piece of plywood over

evaporator coils to prevent coil damage.

b. Loosen motor hold down bolts on mounting bracket

so that fan belt can be removed. Motor power wires

need not be disconnected from motor terminals be-

fore motor is removed from unit.

c. Loosen but do not remove the 2 motor mounting

bracket bolts on left side of bracket.

d. Slide motor/bracket assembly to extreme right, re-

move bolts and lift out through space between fan

scroll and side. Rest motor on a high platform such as

a step ladder. Do not allow motor to hang by its power

wires.

5.11 Pressure Relief Device

All units are equipped with a fusible--plug type safety

relief device on the refrigerant tubing. The relief setting

is 197 _F to 203 _F on all units.

5.12 Crankcase Heater

A crankcase heater is supplied on the 008 & 012 size

units and on all 134a units. The heater prevents liquid

refrigerant from accumulating in the compressor

crankcase during extended shutdown periods. Heater is

automatically energized whenever unit main power is

on and compressor is stopped. Heater is de--energized

when compressor starts.

Do not shut off main power supply for an extended

period except for servicing unit. Turn on power supply

for at least 24 hours after an extended shutdown before

starting compressor. Refer to “Operation”.

5.13 Cycle--LocTM -- Protection Device

All units are equipped with Cycle--LOC

current--sensing lockout relay. This device will lock out

the compressor after any safety trip (discharge pressure

switch, suction--pressure switch, or internal overload of

the compressor). Check reason for lockout before

resetting the device. Refer to unit label wiring diagram.

To reset, turn the system switch to OFF, then back to

COOL.

5.14 Discharge and Suction Pressure Switches

Refer to Table 1 through Table 2 for opening and

closing settings for these safety devices.

The discharge pressure switch is located on the

compressor on the 008 & 012 size units and on the

discharge line on all other units. The suction pressure

switch is located on top of the compressor on 06DR

compressor equipped units and on the suction line on all

other units.

5.15 Oil Charge

All units are factory charged with oil. On 06D

compressors, observe the oil level in the sight glass at

start--up. If unit oil level is below sight glass, add oil

until level reaches approximately 1/4 sight glass.

If oil charge is above sight glass, do not remove any oil

until the compressor crankcase heater has been

energized for at least 24 hours.

When additional oil or a complete charge is required,

use only the following Carrier approved oil.

R--22 Units

Design Series One 204/206 size units

Witco part number 999--5170--55

Design Series One 208/212 size units and all Design

Series Two

Witco -- Suniso 3GS

Calumet -- RO--15

R--134a Units

Castrol -- Icematic E68

ICI -- Emkarate RL68HP

R--407C Units

004 and 006 Copeland Ultra 22CC

Mobil Artic EAL 22CC

ICI (Virginia KMP) Emkarate

RL32C

Thermal Zone 22CC

Castrol -- Icematic E68

008 and 012 ICI -- Emkarate RL68HP

13 62--10458--00

BASED ON DRAWING 50BW400093

USED ON A

004/006 SIZE 40.25

52.00

22.00

27.31

38.25

50.00

36.25

48.00

1.25

45.50

18.005

23.31

0.75

25.81

3.18

2.56

8.75

2.00

1.00

5.00

9.00

7.50

6.00

15.00

16.50

10.00

15.38

0.70

008/012 SIZE

Figure 12 Mounting Base

62--10458--00

TB1--1

FOR HOT WATER/STEAM

HEAT SEE NOTE 2

ORN

(SEE NOTE 3)

SUPPLY

POWER

T--LOW

RED

X2X1

FRED

RED

TB1--5

TB1--4

YEL

DPS

BLU

ORN

SPS

VIO

GROUND

BLK

24VOLT

TRAN

IFC

BLK

BLU

YEL

BLK

22 BLU

YEL

BRN

CHR BRN

BRN

BRN TB1--3

RED IFC BRN

BRN

GRN

YEL

IFM

FIELD L1

BLU

11 21

GROUND MC AS AC

H2 H1

OPTIONAL ELECTRIC DUCT HEATER

HEATERS

LOGIC

YEL

TB1--4

TB1--3

IPF

BLU

RED

IPC

RED

BLU CHR

SEE NOTE 1

BLU 4

ORN

5VIO

BLK

RED

CHR

1 3 RED CC BRN

BRN

C2 CC

CHR

TRAN

IFC

CHR

CL1

IFC

GRN

RED

90MU UNITS ONLY

BRN

SINGLE OR THREE PAHSE AS REQUIRED

90MU CONDENSER FAN WIRING

SHIPS POWER CFR

TO FAN

CFR

WIRE PASSES THOUGH LOOP OF CL

Figure 13 Wiring Schematic -- 90MA/MF/MU004/006

15 62--10458--00

H1 CONTROLLING HEAT CONTACTOR

TRANSFORMER

SUCTION PRESSURE SWITCH

INTERNAL PROTECTOR--COMPRESSOR

INDOOR FAN MOTOR

INDOOR FAN CONTACTOR

BACKUP HEAT CONTACTOR

IPC

IFM

IFC

SPS

TRAN

TERMINAL BOARD

SWITCH

COMPRESSOR CONTACTOR

COMPRESSOR LOCKOUT

AUTOMATIC CUTOUT

DISCHARGE PRESSURE SWITCH

DPS FUSE

COMPRESSOR

FANOFF

AIR SWITCH

LEGEND

HEATCOOL

2X 31

DOES NOT REPRESENT WIRING

INDICATES COMMON POTENTIAL,

TERMINAL/SPLICE (UNMARKED)

TERMINAL (MARKED)

LOCKOUT TERMINAL

TERMINAL BOARD TERMINAL

FIELD WIRING

FACTORY WIRING

C1 IFC

DT1 DT2 DT1

DT2

12 13 H1 H3 H2 H4

X2 X1

TRAN

CLO

TB1

GROUND

CONTROL BOX

MC MANUAL (RESET) CUTOUT

IPF INTERNAL PROTECTOR--FAN MOTOR

T THERMOSTAT

CHR

CRANKCASE HEATERCH

CHR CRANKCASE HEATER RELAY

CFR CONDENSER FAN RELAY

C1 CFR

C2 90MU ONLY

VIEW A--A

VIEW B--B

TB1--5

TB1--4 NC

TB1--1 NO

HEAT

CONTROL PANEL

BOFF

FAN COOL

WAMER

5432

NOTES:

1. 208--230/3/60 VOLT UNITS FACTORY WIRED

TO TRANSFORMER TERMINAL H2 (208 VOLT

TAP). FOR 230 VOLT APPLICATIONS, RE--CON-

NECT TO TERMINAL H3 (230 VOLT TAP).

460/3/60 VOLT UNITS FACTORY WIRED TO

TERMINAL H6. 400/3/50 VOLT UNITS FACTORY

WIRED TO TERMINAL H5.

2. CONNECTION POINTS AT TB--1 TERMINALS

3 & 4 MAY BE USED FOR HEAT CONTROLS.

MAXIMUM LOAD IS 250 VA INRUSH, 50 VA

SEALED.

3. SWITCH CONTACT ARRANGEMENT IS AS

SHOWN BELOW.

Figure 14 Component Arrangement -- 90MA/MF/MU004/006

62--10458--00

TB1--1

T--HIGH

BLU

BLK

90MA012 UNITS ONLY

ORN

9IPC

CDT2

BLK

BLU

CDT1

OLA

BLU

OLB

FOR HOT WATER/STEAM

HEAT SEE NOTE 2

ORN

(SEE NOTE 3)

SUPPLY

POWER

T--LOW

RED

X2X1FRED

RED

TB1--5

YEL

DPS

BLU

ORN

CHR

RED

SPS

1 3 RED

RED

VIO

GROUND

SEE NOTE 1

BLK

24VOLT

TRAN

BLU

IFC

BLK

BLU

YEL

BLK

22 BLU

YEL

OLA

4 3

CLBRN

LLS

TB1--2

BLU

CHR

TB1--2

BRN IFC

C2 CC

BRN

TRAN

IFC

BRN

CHR

RED IFC

BRN

CHR

BLK

GRN

CHR

YEL (COLOR VARIES)

IFM

FIELD L1

BLU

11 21

GROUND MC

OLB

4 3

AS AC

H2 H1

(COLOR VARIES) 1

OPTIONAL ELECTRIC DUCT HEATER

HEATERS

LOGIC

YEL

VIO

ORN BLK

BRN

TB1--4

TB1--3

IPF

90MA012

UNITS ONLY

BRN

BRN LLS

BLUREDRED

BLK BLK

GRN

RED BRN

90MU UNITS ONLY

CFR

90MU CONDENSER FAN WIRING

SHIPS POWER TO FAN

SINGLE OR THREE PAHSE AS REQUIRED

TB1--4

TB1--2

TB1--3 JUMPER

WIRE PASSES THOUGH

LOOP OF CL

Figure 15 Wiring Schematic -- 90MA/MF/MU008/012

17 62--10458--00

OL OVER LOAD

US UNLOADER SOLENOID

H1 CONTROLLING HEAT CONTACTOR

TRANSFORMER

SUCTION PRESSURE SWITCH

INTERNAL PROTECTOR--COMPRESSOR

INDOOR FAN MOTOR

INDOOR FAN CONTACTOR

BACKUP HEAT CONTACTOR

IPC

IFM

IFC

SPS

TRAN

TERMINAL BOARD

SWITCH

COMPRESSOR CONTACTOR

COMPRESSOR LOCKOUT

AUTOMATIC CUTOUT

DISCHARGE PRESSURE SWITCH

DPS FUSE

COMPRESSOR

FANOFF

AIR SWITCH

LEGEND

HEATCOOL

2X 31

DOES NOT REPRESENT WIRING

INDICATES COMMON POTENTIAL,

TERMINAL/SPLICE (UNMARKED)

TERMINAL (MARKED)

LOCKOUT TERMINAL

TERMINAL BOARD TERMINAL

FIELD WIRING

FACTORY WIRING

C1 IFC

DT1 DT2 DT1

DT2

12 13 H1 H3 H2 H4

X2 X1

TRAN

CLO

TB1

GROUND

CONTROL BOX

MC MANUAL (RESET) CUTOUT

IPF INTERNAL PROTECTOR--FAN MOTOR

T THERMOSTAT

CHR

CRANKCASE HEATERCH

CHR CRANKCASE HEATER RELAY

CFR CONDENSER FAN RELAY

C1 CFR

C2 90MU ONLY

VIEW A--A

VIEW B--B

TB1--5

TB1--4 NC

TB1--1 NO

HEAT

CONTROL PANEL

BOFF

FAN COOL

WAMER

5432

NOTES:

1. 208--230/3/60 VOLT UNITS FACTORY WIRED

TO TRANSFORMER TERMINAL H2 (208 VOLT

TAP). FOR 230 VOLT APPLICATIONS, RE--CON-

NECT TO TERMINAL H3 (230 VOLT TAP).

460/3/60 VOLT UNITS FACTORY WIRED TO

TERMINAL H6. 400/3/50 VOLT UNITS FACTORY

WIRED TO TERMINAL H5.

2. CONNECTION POINTS AT TB--1 TERMINALS

3 & 4 MAY BE USED FOR HEAT CONTROLS.

MAXIMUM LOAD IS 250 VA INRUSH, 50 VA

SEALED.

3. SWITCH CONTACT ARRANGEMENT IS AS

SHOWN BELOW.

DUMMY TERMINAL

LLS LIQUID LINE SOLENOID

Figure 16 Component Arrangement -- 90MA/MF/MU008/012

Index -- 1 62--10458--00

Access Panel, 9

Accessory Plenum, 1

Air Filter, 5, 10

Component Arrangement, 15, 17

Condensate Drain, 7, 10

Condenser, 10

Condenser Connections, 6

Crankcase Heater, 12

Cycle--Loc, 12

Electrical Connections, 7

Evaporator Coil, 10

Fan Adjustment, 9

Fan Motor, 12

Fan Shaft, 5

Heating Coil, 1

Installation, 1

Introduction, 1

Line Sizes, 7

Model Chart, 1

Mounting Base, 13

Oil Charge, 12

Pressure Relief Device, 12

Pressure Switches, 12

Refrigerant Charging, 11

Remote Condenser, 7

Return Air, 1

Sequence Of Operation, 8

Shut Down Unit, 8

Spring Mounts, 6

Start Unit, 8

Ventilation, 1

Water Regulating Valve, 10

Wiring Schematic, 14, 16

Carrier 90Ma Mf Mu Users Manual

90MAMFMU to the manual c112a3fa-0b29-4e88-9797-c9aaf91a4c40

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