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INSTALLATION INSTRUCTIONS

DAX SERIES

COMMERCIAL AIR HANDLERS

IOD-1056B

02/2023

Our continuing commitment to quality products may mean a change in specifications without notice. 

© 2022 - 2023 

19001 Kermier Rd. Waller, TX 77484

www.daikincomfort.com

Do not bypass safety devices.

WARNING

Table of Contents

Important Safety Instructions ..........................................2

Product Identification

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

Product Description .........................................................3

Unit Inspection ..................................................................3

Codes & Regulations .......................................................3

Replacement Parts ...........................................................3

Pre-Installation Instructions ............................................4

Location .............................................................................4

Ductwork ...........................................................................4

Supply Ductwork and Flanges .....................................4 

Return Ductwork ...........................................................4 

Return Air Filters

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

Electric Heat ......................................................................4

Electrical Supply Wire and MOP .....................................5

Building Electrical Service Inspection ......................5 

Wire Sizing ...................................................................6

Maximum Overcurrent Protection (MOP)

 ..................6

Electrical Connections .....................................................7

Supply Voltage ..............................................................7

Air Handler Only (Non-Heat Kit Models) .....................7

Heater Kit Models ..........................................................7

Low Voltage Connections

 ............................................7

Heat Kit Installation ..........................................................7

Refrigerant Lines ..............................................................8

Tubing Preparation .......................................................8

Post Brazing ..................................................................8

Piping Size .....................................................................8

Multiple Condensers .....................................................8

Evaporator Coil TXV .........................................................9

Airflow

 ...............................................................................9

Regular Maintenance .......................................................9

Blower Performance Tables .....................................10-11 

Wiring Diagram ...............................................................12

Splits Low Voltage Diagram ..........................................13 

IMPORTANT NOTE: DAX models are suitable for 

Upflow and Horizontal Installations only. do not 

use for downflow Installations.

ATTENTION INSTALLING PERSONNEL:

Prior to installation, thoroughly familiarize yourself with this

Installation Manual. Observe all safety warnings. During 

installation or repair, caution is to be observed.

It is your responsibility to install the product safely and to 

educate the customer on its safe use.

   

RECOGNIZE THIS SYMBOL AS 

    A SAFETY PRECAUTION.

ONLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL, 

ADJUST, SERVICE, MAINTENANCE OR REPAIR  

(HEREINAFTER, “SERVICE”) THE EQUIPMENT SPECIFIED 

IN THIS MANUAL SHOULD SERVICE THE EQUIPMENT.  THE 

MANUFACTURER WILL NOT BE RESPONSIBLE FOR ANY 

INJURY OR PROPERTY DAMAGE ARISING FROM IMPROPER 

SERVICE OR SERVICE PROCEDURES.  IF YOU SERVICE 

THIS UNIT, YOU ASSUME RESPONSIBILITY FOR ANY INJURY 

OR PROPERTY DAMAGE WHICH MAY RESULT.  IN ADDITION, 

IN JURISDICTIONS THAT REQUIRE ONE OR MORE 

LICENSES TO SERVICE THE EQUIPMENT SPECIFIED IN THIS  

MANUAL, ONLY LICENSED PERSONNEL SHOULD SERVICE 

THE EQUIPMENT.  IMPROPER INSTALLATION, ADJUSTMENT, 

SERVICING, MAINTENANCE OR REPAIR OF THE EQUIPMENT 

SPECIFIED IN THIS MANUAL, OR ATTEMPTING TO INSTALL, 

ADJUST, SERVICE OR REPAIR THE EQUIPMENT SPECIFIED 

IN THIS MANUAL WITHOUT PROPER TRAINING MAY RESULT 

IN PRODUCT DAMAGE, PROPERTY DAMAGE, PERSONAL  

INJURY OR DEATH.

WARNING

Содержание DAX Series

Страница 1: ...suitable for Upflow and Horizontal Installations only do not use for downflow Installations ATTENTION INSTALLING PERSONNEL Prior to installation thoroughly familiarize yourself with this Installation...

Страница 2: ...and a carbon monoxide producing device is operated therein there must be adequate direct outside ven la on CARBONMONOXIDE POISONING HAZARD Special Warning for Installa on of Furnace or Air Handling Un...

Страница 3: ...ng the table Model Identification section check the equipment model number and voltage to ensure the unit is appropriately sized for the condenser unit s If an incorrect unit is supplied it must not b...

Страница 4: ...g this unit in an area that may become wet elevate the unit with a sturdy non porous material In installations that may lead to physical damage warehouse industrial sites etc it is advised to install...

Страница 5: ...00 23 31 31 30 3000 23 30 30 30 3100 21 29 29 30 3200 21 29 29 DAX0904 Temperature Rise Table F 7 5Ton DAX1204 Temperature Rise Table F KW CFM 208 240 480 15 3800 9 12 12 15 3900 9 12 12 15 4000 9 12...

Страница 6: ...ipment Use the following check list when selecting the appropriate wire size for your unit Wire size must carry the Minimum Circuit Ampacity MCA Refer to the NEC USA or CSA Canada for wire sizing The...

Страница 7: ...o a mating plug in the airhandler The high voltage connections are to be made at the air handler contactor These wires are to be routed through the pipe nipples supplied with the heater kit as shown i...

Страница 8: ...quid lines are to be manifolded when matched with a single condenser heat pump See the following sketches for additional details On a 7 ton DAX unit you can use either one 7 ton condenser or two 4 ton...

Страница 9: ...SPEED COOLING AC HP DEFAULT SPEED FOR ALL Y2 3 HIGH SPEED HEATING DEFAULT SPEED FOR HP OR AC HP WITH ELECTRIC HEAT 4 FAN ONLY 5 HIGH COOL HIGHER SPEED Prior to changing the torque settings refer to ai...

Страница 10: ...51 0 5 3407 958 0 53 0 6 3310 987 0 54 0 7 3176 1021 0 56 0 8 3050 1058 0 58 HORIZONTAL SPEED TAP ESP In H2O SCFM RPM BHP T1 0 1 2125 552 0 06 0 2 1583 553 0 06 0 3 1132 591 0 07 0 4 911 653 0 07 0 5...

Страница 11: ...02 0 89 0 6 4175 1124 0 91 0 7 4099 1148 0 93 0 8 4022 1171 0 95 HORIZONTAL SPEED TAP ESP In H2O SCFM RPM BHP T1 0 1 2576 618 0 16 0 2 2460 661 0 18 0 3 2328 702 0 19 0 4 2173 747 0 20 0 5 2016 789 0...

Страница 12: ...SEQ SEQUENCER RELAY TB TERMINAL BLOCK TR TRANSFORMER 2 S1 S2 R C G W1 W2 Y1 Y2 O TB T1 T2 T3 T4 T5 4 3 2 1 5 PLF BM1 PLF BM2 GR YL PU WH BR GR YL PU WH BR GR YL PU WH BR 4 3 2 1 5 YL BR BR YL 5 3 4 T...

Страница 13: ...NG DIAGRAM SHOWING DAX MODEL SERIES WITH FIELD CONNECTIONS THIS DIAGRAM IS TO BE INCLUDED IN INSTALLATION INSTRUCTIONS A SEPARATE WIRING DIAGRAM IS CONTAINED INSIDE THE CONTROL BOX FOR UNIT FACTORY WI...

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Страница 16: ...022 2023 19001 Kermier Rd Waller TX 77484 www daikincomfort com CUSTOMER FEEDBACK Daikin is very interested in all product comments Please fill out the feedback form on the following link https daikin...

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