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Carrier 45J, Installation, Start-Up And Service Instructions Manual

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

Catalog No. 04-53450003-01

Printed in U.S.A.

Form 45-5SI

Pg 1 

8-18

Replaces: 45-3SI

Installation, Start-Up and

Service Instructions

CONTENTS

SAFETY CONSIDERATIONS

 . . . . . . . . . . . . . . . . . . . . . .1

PRE-INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

General

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Unit Identification

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Warranty

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

CONTROL OPTIONS

 . . . . . . . . . . . . . . . . . . . . . . . . . . .4

VAV CCN Controls and OPEN VAV Controls

 . . . . .4

VVT

®

 CCN Controls and OPEN VVT Controls

 . . . . .4

Analog Electric Controls

. . . . . . . . . . . . . . . . . . . . . . . .4

Pneumatic Controls

 . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Direct Digital Controls (By Others)

. . . . . . . . . . . . . . . .4

No Control Units

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

INSTALLATION

 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Step 1 — Install Fan-Powered Box

. . . . . . . . . . . . . . . .4

Step 2 — Make Duct Connections

 . . . . . . . . . . . . . . . .5

Step 3 — Connect Power Wiring

. . . . . . . . . . . . . . . . . .5

Step 4 — Set Up System and Calibrate

. . . . . . . . . . . .7

START-UP

 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

General

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Initial Start-Up Procedures

. . . . . . . . . . . . . . . . . . . . . . . .8

Balancing Carrier Fan Terminals

. . . . . . . . . . . . . . . . . .9

Speed Controller

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Setting Fan Air Flow with ECM Motors

. . . . . . . . . . .16

PNEUMATIC CONTROLS

 . . . . . . . . . . . . . . . . . . . . . .17

General — Single Function Pneumatic Controller

Control Sequences (1300-1305, 1400-1401)

. . . .17

Units with Single-Function Controllers

 . . . . . . . . . .17

Units with Multi-Function Controllers

(Sequences 1306-1317 and 1402-1405)

 . . . . . . . .18

Operation Sequences

. . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Analog Controls Installation and Balancing
Procedures

 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Thermostat Installation

 . . . . . . . . . . . . . . . . . . . . . . . . . .20

Programming Thermostat

 . . . . . . . . . . . . . . . . . . . . . . .20

SERVICE

 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Controls

 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Fan Motor and Wheel

 . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Fan Motor Wiring

 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Fan Motor Maintenance

. . . . . . . . . . . . . . . . . . . . . . . . . .22

SAFETY CONSIDERATIONS

 

See Fig. 1 for the Proposition 65 warning label.

Fig. 1 — Proposition 65 Warning Label

PRE-INSTALLATION

General

The 45J,K,Q constant volume (series) and 45M,N,R variable

volume (parallel) fan powered boxes (see Fig. 2 and 3) can be

equipped to provide pressure independent, variable volume

(VAV). All units can also be equipped with factory-installed

analog electronic, pneumatic, or variable air volume (VAV)

controls. Units are available with factory-installed electric or hot

water heat.

SAFETY NOTE

Air-handling equipment will provide safe and reliable

service when operated within design specifications.

The equipment should be operated and serviced only

by authorized personnel who have a thorough knowl-

edge of system operation, safety devices, and emer-

gency procedures.
Good judgment should be used in applying any manu-

facturer’s instructions to avoid injury to personnel or

damage to equipment and property.

WARNING

Disconnect all power to the unit before performing mainte-

nance or service. Unit may automatically start if power is

not disconnected. Electrical shock and personal injury

could result.

WARNING

If it is necessary to remove and dispose of mercury contac-

tors in electric heat section, follow all local, state, and fed-

eral laws regarding disposal of equipment containing

hazardous materials.

!

WARNING: 

Cancer - www.P65Warnings.ca.gov

45J,K,M,N,Q,R

Fan Powered

Variable Air Volume Terminals

Summary of Contents for 45J

Page 1: ...d Wheel 22 Fan Motor Wiring 22 Fan Motor Maintenance 22 SAFETY CONSIDERATIONS See Fig 1 for the Proposition 65 warning label Fig 1 Proposition 65 Warning Label PRE INSTALLATION General The 45J K Q constant volume series and 45M N R variable volume parallel fan powered boxes see Fig 2 and 3 can be equipped to provide pressure independent variable volume VAV All units can also be equipped with facto...

Page 2: ...r damage to duct connections coils or controls File dam age claim immediately with transportation agency and notify Carrier NOTE Remove all packaging material and foreign material from unit and ensure the blower wheel moves freely before installation Units are shipped with cardboard in both sides of the fan inlet that MUST be removed Unit Identification Each unit has 2 main labels attached to the ...

Page 3: ... 4 9 32 24 28 6 100 4 9 35 25 30 7 175 4 9 40 35 43 Table 2 45M Unit Weights SIZE UNIT ONLY lb WITH PNEUMATIC CONTROLS WITH DDC OR ANALOG CONTROLS WITH ELECTRIC HEATER WITH HOT WATER 1 Row 2 Row 2 114 4 9 30 19 21 3 114 4 9 30 20 22 4 115 4 9 32 22 25 5 122 4 9 32 24 28 6 123 4 9 35 25 30 7 127 4 9 40 35 43 Table 3 45K Unit Weights 45K SIZE UNIT ONLY lb WITH PNEUMATIC CONTROLS WITH DDC OR ANALOG C...

Page 4: ...sformer and fan relay Analog Electronic Controls Pressure independent control packages are available with or without hot water or electric heat automatic or remote night shutdown and automatic night setback All control arrange ments include a standard inlet flow sensor control enclosure SCR fan speed controller 24 volt transformer fan relay and wall thermostat to match the control type Pneumatic C...

Page 5: ... of straight duct are supplied to the inlet of the unit An elbow put at the inlet of the unit will create turbulence at the inlet making it difficult for the flow sensor to accurately measure the airflow Check that the pressure pick up in primary air collar is lo cated properly and that air supply duct connections are air tight Install supply ductwork on unit inlet collar following all accepted me...

Page 6: ...K Shown Fig 7 Typical Perimeter Installation Constant Volume Fan Powered Box FIELD SUPPLIED HANGER BRACKET OPTIONAL ACCESSORY HANGER FIELD SUPPLIED HANGING STRAPS DO NOT suspend unit by trapeze hangers that interfere with the unit access panel ...

Page 7: ...pecified for the job and specific for each unit on the job Default set point values are provided by the factory and can be reset to the specific requirements in the field The fan speed must be field adjusted after all discharge ductwork and diffusers have been installed Field Adjustment of the Maximum and Minimum Airflow Set Points Each fan powered terminals unit is equipped with a flow probe inst...

Page 8: ...el and that adequate mounting support has been provided 3 Remove motor access panel from the bottom of the fan box and also remove the control panel cover 4 Test the fan motor setscrew The setscrew should fit tightly but it may have come loose during shipment or installation 5 Rotate the blower by hand to ensure proper clearance be tween the blower and the blower housing 6 Check the fan box for lo...

Page 9: ...Airflow Adjustment of Set Points Each 45J 45K and 45Q supplied with controls is equipped with a pneumatic or electronic volume controller which regulates the quantity of cold primary air entering the terminal and the condi tioned space If required airflow levels are specified with the job order the minimum and maximum cfm levels will be set at the factory where applicable If minimum and maximum le...

Page 10: ...________ ENGINEER _________________________________________ BUILDING LOCATION FLOOR _________________________ BUS NUMBER ______________________________________ Fig 10 Air Terminal Performance Sheet CONTROL SET POINTS Tag Number Zone Address Box Size in cfm Cooling cfm Fan cfm Heating cfm Heat kW Occupied Unoccupied Calibration Gain Min Max Min Max Type Btu Min Max Min Max Mult ...

Page 11: ... respectively Table 9 45J Series Fan Powered Terminal Unit Performance 45J WITH PSC FAN MOTOR UNIT SIZE INLET SIZE in FAN AIRFLOW cfm PRIMARY AIRFLOW cfm MOTOR HP MOTOR AMPS MIN MAX MIN MAX 120V 208 240V 277V 2 6 100 560 52 or 0 515 1 10 1 8 1 0 7 3 6 300 990 52 or 0 515 1 4 3 6 2 1 5 8 92 or 0 916 4 8 550 1440 92 or 0 916 1 4 5 2 8 2 1 10 143 or 0 1432 12 206 or 0 1440 5 10 1100 2140 143 or 0 143...

Page 12: ...IRFLOW cfm PRIMARY AIRFLOW cfm MOTOR HP MOTOR AMPS MIN MAX MIN MAX 120V 208 240V 277V 2 6 50 530 52 or 0 515 1 10 1 4 0 8 0 6 8 92 or 0 530 3 6 200 1100 52 or 0 515 1 4 4 3 2 4 1 8 8 92 or 0 916 10 143 or 0 1100 12 360 or 0 1100 4 8 500 1300 92 or 0 916 1 4 4 3 2 4 1 8 10 143 or 0 1300 12 206 or 0 1300 5 10 800 1900 143 or 0 1432 1 2 8 3 4 4 3 5 12 206 or 0 1900 14 281 or 0 1900 6 10 1200 2600 143...

Page 13: ... INLET SIZE in FAN AIRFLOW PRIMARY AIRFLOW MOTOR HP MOTOR AMPS MIN MAX MIN MAX 120V 208 240V 277V 3 8 460 1075 92 or 0 916 1 4 5 8 2 6 2 2 10 143 or 0 1075 4 10 805 1650 143 or 0 1432 2 1 6 6 9 3 7 2 7 13 5 X 8 206 or 0 1650 5 10 840 1970 143 or 0 1432 1 2 8 4 4 2 3 7 12 206 or 0 1970 14 281 or 0 1970 45Q UNITS WITH ECM FAN MOTOR UNIT SIZE INLET SIZE in FAN AIRFLOW PRIMARY AIRFLOW MOTOR HP MOTOR A...

Page 14: ...r entering the terminal and the conditioned space If required airflow levels are specified with the job or der the minimum and maximum cfm levels will be set at the factory If minimum and maximum levels are not specified a default value is used Other settings of minimum and maxi mum primary airflow must be set in the field Airflow cfm ranges for the primary air damper are shown in Tables 12 14 for...

Page 15: ...208 240V 277V 2 6 200 400 52 or 0 515 1 10 1 6 0 9 0 7 8 92 or 0 916 1 10 2 3 6 300 990 52 or 0 515 1 4 3 6 2 1 5 8 92 or 0 916 4 8 550 1440 92 or 0 916 1 4 5 2 8 2 1 10 143 or 0 1432 12 206 or 0 1440 5 10 1100 2140 143 or 0 1432 1 2 8 3 4 6 3 5 12 206 or 0 2062 6 12 1200 2530 206 or 0 2062 3 4 9 5 5 8 4 4 14 281 or 0 2530 7 16 2100 3900 367 or 0 3665 2 3 4 N A 13 2 9 9 45N WITH PSC FAN MOTOR UNIT...

Page 16: ...ble with ECM motors for easy balancing These motors supply a determined amount of air regardless of static pressure from ductwork layout or air distri bution The ECM motors are programmed to provide a maxi mum CFM depending on model and unit size The motors are then set to provide the desired CFM as a proportional amount of the maximum The proportion can be set by several options VCU CONTROL OPTIO...

Page 17: ...o the differential pressure sensor signal line tees 4 Verify that the installed room thermostat is compatible with the unit control 5 Close the primary air damper a RANC disconnecting the actuator from the con troller should allow the damper to close completely b DANO connecting to 20 psi air supply directly to the actuator should close the damper completely 6 Start the blower motor by doing one o...

Page 18: ...bleshooting Pneumatic Controls Units with Multi Function Controllers Sequences 1306 1317 and 1402 1405 1 Determine sequence of operation direct acting normally closed DANC reverse acting normally closed RANC direct acting normally open or reverse acting normally open This can be accomplished by reading the diagram affixed to the unit All sequences above utilize a four func tion controller allowing...

Page 19: ...f plenum air will be induced and heating coils if supplied are full on See Table 15 for pneumatic control troubleshooting 5 Adjust the HI STAT knob with a 15 psi thermostat sig nal to obtain the desired airflow setting Depending on the control sequence desired the HI STAT knob will vary either the minimum setting or the maximum setting as follows DANC HI STAT knob adjusts the maximum setting RANC ...

Page 20: ...with the thermostat Verify the hex screws used for securing the cover are located at the bottom before installing 4 Connect the wires to the terminal block Refer to the wiring diagram located on the inside cover of the control enclo sure of each unit showing the wiring terminations 5 Replace the thermostat cover Turn the two hex screws COUNTER CLOCKWISE until they are flush with the bottom cover a...

Page 21: ...5 778 960 1383 1882 2459 1336 4696 3 9 0 48 158 247 355 484 632 799 987 1421 1934 2526 1373 4824 4 0 0 50 162 253 364 496 648 820 1012 1458 1984 2592 1408 4950 4 1 0 53 166 259 373 508 664 840 1037 1494 2033 2656 1443 5072 4 2 0 55 170 265 382 520 680 860 1062 1529 2081 2718 1477 5191 4 3 0 58 174 271 391 532 695 879 1086 1563 2128 2779 1510 5308 4 4 0 60 177 277 399 543 710 898 1109 1597 2174 283...

Page 22: ...g Refer to the fan motor wiring details shown on the wiring diagram attached to the unit Failure to reconnect the fan properly can cause damage to the motor and or serious per sonal injury Fan Motor Maintenance Unit motors are equipped with permanently lubricated bear ings Inspect fan and motor assembly for accumulation of dust and dirt as required by operating environment Clean as neces sary See ...

Page 23: ...t too high or discharge static pressure is too low If fan motor runs insufficient airflow 1 Check for ductwork restrictions dirty air filters and clogged water coils 2 Re adjust fan speed control 3 Discharge static pressure too high If repair or replacement is required 1 Motor and fan should be removed as an assembly Discon nect all power before servicing 2 Remove the four hex nuts from the mounti...

Page 24: ...e right to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53450003 01 Printed in U S A Form 45 5SI Pg 24 8 18 Replaces 45 3SI Carrier Corporation 2018 ...

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