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66435-BIM-B-1004

Unitary Products Group

23

TYPICAL WIRING DIAGRAM NOTES (SEE FIGURES 
13, 14, AND 15)

1.

All field wiring to be accomplished following city, local 
and/or national codes in effect at time of installation of 
this unit.

2.

Motors are inherently protected.

3.

See unit nameplate for maximum fuse size and minimum 
circuit ampacity.

4.

Select indoor blower cooling speed from the Unit Wiring 
Diagram Table 1. Heating speed is preset at the factory.

5.

If ASCT is present, wire 226/BL and 229/BL are con-
nected to ASCT-3. If LR only is present, wire 226/BL and 
229/BL are connected to M1 coil and wire 807/BL is 
omitted.

For further reference see R-410A Technical Training literature P/N 036-60905-001-B-0502.

Label all wires prior to disconnection when servic-
ing controls. Wiring errors can cause improper and
dangerous operation if any of the wire as supplied
with this unit must be removed it must be replaced
with type 105°C, 600V wire or equivalent clearly
renumbered for identification. Verify proper opera-
tion after servicing.

Open all disconnects before servicing this unit.

FIGURE 16 - R-410A QUICK REFERENCE GUIDE

R-410A QUICK REFERENCE GUIDE

Refer to Installation Instructions for specific installation requirements

.

R-410A 

R

efrigerant operates at 50 - 70 percent higher pressures than R-22. Be sure that servicing

equipment and replacement components are designed to operate with R-410A.
R-410A

R

efrigerant cylinders are rose colored.

Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400, or DOT BW400.
Recovery equipment must be rated for R-410A.
Do Not use R-410A service equipment on R-22 systems. All hoses, gages, recovery cylinders, charging
cylinders and recovery equipment must be dedicated for use on R-410A systems only.
Manifold sets must be at least 700 psig high side, and 180 psig low side, with 550 psig retard.
All hoses must have a service pressure rating of 800 psig.
Leak detectors must be designed to detect HFC refrigerants.
Systems must be charged with liquid refrigerant. Use a commercial type metering device in the
manifold hose.
R-410A can only be used with POE type oils.
POE type oils rapidly absorb moisture from the atmosphere.
Vacuum pumps will not remove moisture from POE type oils.
Do not use liquid line driers with a rated working pressure rating less than 600 psig.
Do not install suction line driers in the liquid line.
A liquid line drier is require

d

on every unit.

Do not use a R-22 TXV. If a TXV is to be used, it must be a R-410A TXV.
Never open system to atmosphere when under a vacuum.
If system must be opened for service, evacuate system the

n

 break the vacuum with dry nitrogen and

replace all filter driers.

Summary of Contents for DYZ 024

Page 1: ...re intended to clarify or make the installation easier Cautions are given to prevent equipment damage Warnings are given to alert installer that personal injury and or equipment damage may result if i...

Page 2: ...NPUT 18 NATURAL GAS 18 TROUBLESHOOTING 19 TYPICAL WIRING DIAGRAM NOTES SEE FIGURES 13 14 AND 15 23 LIST OF FIGURES Fig Pg 1 UNIT CENTER OF GRAVITY 5 2 FIELD WIRING DIAGRAM CONTROL WIRING 7 3 POWER WIR...

Page 3: ...n to prevent equipment damage WARNINGS are given to alert the installer that personal injury and or equipment damage may result if installation procedure is not handled properly INSPECTION As soon as...

Page 4: ...Contractors of America D 0 4 5 0 F PRODUCT CATEGORY D Single Package Air Conditioner PRODUCT GENERATION A 1st Generation NOMINAL COOLING CAPACITY MBH NOMINAL GAS HEATING INPUT CAPACITY 045 45 000 BTUH...

Page 5: ...f sufficient length should be used across the top of the unit Units may also be moved or lifted with a fork lift Slotted openings in the skid are provided for this purpose Forks must pass completely t...

Page 6: ...sing your units efficiency and increasing operating costs and wear and tear on the unit and controls Filters should be checked monthly this is especially impor tant since this unit is used for both he...

Page 7: ...t be sized properly to carry the load Each unit must be wired with a separate branch circuit fed directly from the meter panel and properly fused Refer to Figure 3 for typical field wiring and to the...

Page 8: ...are factory adjusted and ready for operation PHASING Three phase scroll compressors operate in only one direc tion If the scroll is drawing low amperage has similar suction and discharge pressures or...

Page 9: ...own Continuous return air temperature should not be below 55 F TABLE 4 PROPANE1 LP GAS APPLICATION DATA AVAILABLE ON MODELS INPUT CAPACITY MBH 2 OUTPUT CAPACITY MBH GAS RATE 3 FT 3 HR NUMBER OF BURNER...

Page 10: ...l shut off valve may have to be installed outside of the unit 3 Use wrought iron or steel pipe for all gas lines Pipe dope should be applied sparingly to male threads only FIGURE 4 EXTERNAL SUPPLY CON...

Page 11: ...tened to the outside of the side gas control electri cal compartment with the screws provided in the bag attached to the inside of the gas control electrical compart ment see Figure 6 If flexible stai...

Page 12: ...TA MODEL DYZ POWER SUPPLY VOLTAGE LIMITATIONS1 COMPRESSOR COND FAN MOTOR FLA SUPPLY AIR BLOWER MOTOR FLA MINIMUM CIRCUIT AMPACITY MAX FUSE SIZE AMPS2 MAX HACR BREAKER SIZE AMPS UNIT POWER FACTOR TRANS...

Page 13: ...L All dimensions are in inches They are subject to change with out notice Certified dimensions will be provided upon request TABLE 9 UNIT DIMENSIONS FRONT UNIT SIZE DIMENSION A B 024 030 036 33 1 2 18...

Page 14: ...8 DIA KNOCKOUT 1 2 NPTI CONNECTION LOW VOLTAGE CONN DIA KNOCKOUT 8 7 FIGURE 8 UNIT DIMENSIONS BACK BOTTOM 1 3 4 1 5 2 9 9 1 6 1 5 3 1 2 1 3 4 1 3 4 1 5 4 1 4 1 2 3 1 2 3 3 8 1 4 1 2 2 8 3 8 1 4 1 2 C...

Page 15: ...utomatically The limit switch operates when a high temperature condition caused by inadequate supply air flow occurs thus shut ting down the ignition control and closing the main gas valve and energiz...

Page 16: ...rmostat to the desired setting 12 If the unit will not operate follow the instructions To Turn Off Gas To Appliance and call your service technician or gas supplier TO TURN OFF GAS TO UNIT 1 Set the t...

Page 17: ...lame 3 The pilot flame should envelope 3 8 of the end of the flame sensor and not contain any yellow color see Fig ure 11 4 Replace the pilot adjustment cover screw after the pilot flame is set To che...

Page 18: ...gas consumed per hour from Table 11 If the actual input is not within 5 of the furnace rating with allowance being made for the permissible range of the regu lator setting replace the orifice spuds wi...

Page 19: ...ECKOUT procedures Troubleshooting of components necessitates opening the electrical control box with the power connected to the unit Use extreme care when working with the live circuits Check the unit...

Page 20: ...66435 BIM B 1004 20 Unitary Products Group FIGURE 13 TYPICAL WIRING DIAGRAM DYZ 208 230 1 60...

Page 21: ...66435 BIM B 1004 Unitary Products Group 21 FIGURE 14 TYPICAL WIRING DIAGRAM DYZ 208 230 3 60...

Page 22: ...66435 BIM B 1004 22 Unitary Products Group FIGURE 15 TYPICAL WIRING DIAGRAM DYZ 460 3 60...

Page 23: ...Refrigerant operates at 50 70 percent higher pressures than R 22 Be sure that servicing equipment and replacement components are designed to operate with R 410A R 410A Refrigerant cylinders are rose c...

Page 24: ...e without notice Printed in U S A 66435 BIM B 1004 Copyright by Unitary Products Group 2004 All rights reserved Supersedes 66435 BIM A 1003 035 19534 000 A 1003 Unitary 5005 Norman Products York OK Gr...

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