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Unitary products group DW-15, Installation Manual, Page: 1 / 68

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INSTALLATION 
MANUAL

CAUTION:

READ ALL SAFETY GUIDES BEFORE YOU 
BEGIN TO INSTALL YOUR UNIT.

SAVE THIS MANUAL

GAS/ELECTRIC SINGLE PACKAGE 

AIR CONDITIONERS

MODELS:  DW-15, -18, -20 & -25

66354-BIM-D-0904

 

CONTENTS

GENERAL  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

SAFETY CONSIDERATIONS  . . . . . . . . . . . . . . . . . . . . . . . 4

INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

RENEWAL PARTS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

PRODUCT NOMENCLATURE  . . . . . . . . . . . . . . . . . . . . . . 6

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

OPERATION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

START-UP (COOLING) . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

START-UP (GAS HEAT) . . . . . . . . . . . . . . . . . . . . . . . . . . 58

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

See the following page for a complete Table of Contents.

NOTES, CAUTIONS AND WARNINGS

The installer should pay particular attention to the words:

NOTE

, 

CAUTION

, and 

WARNING

. Notes are 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 installation procedure is not handled properly.

Summary of Contents for DW-15

Page 1: ...INSTALLATION 17 OPERATION 50 START UP COOLING 57 START UP GAS HEAT 58 TROUBLESHOOTING 60 See the following page for a complete Table of Contents NOTES CAUTIONS AND WARNINGS The installer should pay pa...

Page 2: ...CE OF OPERATION 51 CONTINUOUS BLOWER 51 INTERMITTENT BLOWER 51 NO OUTDOOR AIR OPTIONS 51 ECONOMIZER WITH SINGLE ENTHALPY SENSOR 51 ECONOMIZER WITH DUAL ENTHALPY SENSORS 51 ECONOMIZER SINGLE OR DUAL WI...

Page 3: ...ELECTRIC HEAT APPLICATION DATA 23 4 GAS HEAT APPLICATION DATA 24 5 PIPE SIZING 24 6 FOUR AND SIX POINT LOADS 29 7 PHYSICAL DATA 30 8 DW ELECTRICAL DATA WITHOUT POWERED CONVENIENCE OUTLET 31 9 DW ELECT...

Page 4: ...or service this equipment Observe all precautions in the literature on labels and tags accompanying the equipment whenever working on air conditioning equipment Be sure to follow all other safety prec...

Page 5: ...ombustible material For use with natural gas or propane gas The installer should pay particular attention to the words NOTE CAUTION and WARNING Notes are intended to clarify or make the installation e...

Page 6: ...BAS Controller w 2 Pleated Filters Z Hi Static Drive BAS Ready Econ No BAS Controller Power Exhaust w 2 Pleated Filters Installation Options A No Options Installed B Option 1 C Option 2 D Options 1 2...

Page 7: ...coat Cond Coil Coil Guard CH CPC Controller DFS APS Technicoat Cond Coil Phase Monitor Coil Guard CJ CPC Controller DFS APS Technicoat Evap Coil CK CPC Controller DFS APS Technicoat Evap Coil Phase Mo...

Page 8: ...ouble Wall JZ Johnson UNT Controller DFS APS Double Wall Phase Monitor Coil Guard J1 Johnson UNT Controller DFS APS Double Wall Technicoat Cond Coils J2 Johnson UNT Controller DFS APS Double Wall Tech...

Page 9: ...Novar ETC 3 Controller DFS APS Technicoat Evap Coil NK Novar ETC 3 Controller DFS APS Technicoat Evap Coil Phase Monitor NL Novar ETC 3 Controller DFS APS Technicoat Evap Coil Coil Guard NM Novar ETC...

Page 10: ...ch LA Simplicity Intelli Comfort Controller LB Simplicity Intelli Comfort Controller Phase Monitor LC Simplicity Intelli Comfort Controller Coil Guard LD Simplicity Intelli Comfort Controller Phase Mo...

Page 11: ...w ModLINC Controller SS Drain Pan Technicoat Cond Coils WV Intelli Comfort w ModLINC Controller SS Drain Pan Technicoat Evap Coil WW Intelli Comfort w ModLINC Controller SS Drain Pan Technicoat Evap...

Page 12: ...Pan Technicoat Cond Coils Hinged Filter Door Toolless Access Panels DV CPC Controller DFS APS SS Drain Pan Technicoat Evap Coil Hinged Filter Door Toolless Access Panels DW CPC Controller DFS APS SS D...

Page 13: ...Hinged Filter Door Toolless Access Panels E8 Johnson UNT Controller DFS APS Double Wall SS Drain Pan Technicoat Evap and Cond Coils Hinged Filter Door Toolless Access Panels E9 Johnson UNT Controller...

Page 14: ...ard Hinged Filter Door Toolless Access Panels PR Novar ETC 3 Controller DFS APS Technicoat Evap Cond Coils Phase Monitor Coil Guard Hinged Filter Door Toolless Access Panels PS Novar ETC 3 Controller...

Page 15: ...Phase Monitor Hinged Filter Door Toolless Access Panels QG Simplicity Intelli Comfort Controller Technicoat Cond Coil Coil Guard Hinged Filter Door Toolless Access Panels QH Simplicity Intelli Comfort...

Page 16: ...Intelli Comfort w ModLINC Controller Technicoat Evap Cond Coils Phase Monitor Coil Guard Hinged Filter Door Toolless XS Intelli Comfort w ModLINC Controller SS Drain Pan Hinged Filter Door Toolless A...

Page 17: ...d in accordance with the following national and local safety codes In U S A National Electrical Code ANSI NFPA No 70 National Fuel Gas Code Z223 1 Gas Fired Central Furnace Standard ANSI Z21 47a Local...

Page 18: ...f curb or special frame other than a U P G roof curb gasketing must be applied to all surfaces that come in contact with the unit underside TABLE 1 UNIT APPLICATION DATA Voltage Varation Min Max 1 208...

Page 19: ...sions for ade quate combustion and ventilation air in accordance with Section 5 3 Air for Combustion and Ventilation of the National Fuel Gas Code ANSI Z223 1 in U S A or Sections 7 2 7 3 or 7 4 of Ga...

Page 20: ...ge surfaces on the hood prior to installing the hood Extend gasketing 1 4 inch beyond the top and bottom of the two side flanges to insure adequate sealing Adjusting the damper to the desired air flow...

Page 21: ...must be kept clean or replaced with same size and type Dirty filters will reduce the capacity of the unit and will result in frosted coils or safety shutdown Minimum filter area and required sizes are...

Page 22: ...cludes subbase 2 Terminals A1 and A2 provide a relay output to close the outdoor economizer dampers when the thermostat switches to the set back position 24 Volt Transformer 2 TO REMOTE SENSOR 2ET0470...

Page 23: ...the type shown on the wir ing diagram and the same minimum gauge as the replaced wire Electrical line must be sized properly to carry the load Use copper conductors only Each unit must be wired with...

Page 24: ...piping arrangements are shown in the figures on page 25 All shaded items are field supplied If gas supply line is routed through the unit s base ensure that the burner assembly can be removed for mai...

Page 25: ...d immediately upstream of the gas supply connection to the fur nace L P UNITS TANKS AND PIPING All gas heat units are shipped from the factory equipped for natural gas use only The unit may be convert...

Page 26: ...s secured to the inside of the access panel opening with four fasteners and the screws used for mounting the hood to the panel The top flange of this hood slips in under the top of the access panel op...

Page 27: ...y turn the set point adjusting screw fully clockwise past the D setting POWER EXHAUST DAMPER SETPOINT WITH OR WITH OUT POWER EXHAUST With no power exhaust option adjust the Exhaust Air Adjustment Scre...

Page 28: ...C C B B A A CONTROL CURVE CONTROL POINT APPROX 0 F 0 C AT 50 RH A D C B 63 17 73 23 70 21 67 19 FIGURE 10 HONEYWELL ECONOMIZER CONTROL W7212 N1 N P1 P EXH Set EXH Min Pos IAQ Max IAQ IAQ Min Free Coo...

Page 29: ...760 481 899 899 481 300 Elec 2846 496 927 927 496 180 Gas 2660 302 316 453 590 565 434 210 Gas 2928 340 340 488 636 636 488 240 Gas 2960 344 344 493 643 643 493 300 Gas 3046 354 354 508 661 661 508 18...

Page 30: ...t CONDENSER COIL COMPRESSOR Qty Per Unit SCROLL QUANTITY PER UNIT 12 X 24 X 2 TOTAL FACE AREA Sq Ft REFRIGANT 22 Lb Oz SYSTEM No 1 SYSTEM No 2 BASIC UNIT OPTIONS ACCESSORIES COOLING ONLY GAS ELECTRIC...

Page 31: ...1 7 2 0 0 None 0 0 36 1 45 E18 18 0 1 21 7 36 1 45 E36 36 0 2 43 3 63 1 70 E54 54 0 2 65 0 74 0 90 E72 72 0 2 86 6 95 6 110 575 8 3 78 0 9 5 9 0 0 None 0 0 28 2 35 E18 18 0 1 17 3 29 0 35 E36 36 0 2 3...

Page 32: ...one 0 0 44 6 50 E18 18 0 1 17 3 44 6 50 E36 36 0 2 34 6 53 6 60 E54 54 0 2 52 0 62 2 70 E72 72 0 2 69 3 79 5 90 25 208 47 1 245 3 7 38 6 0 0 None 0 0 159 4 200 E18 13 5 1 37 5 159 4 200 E36 27 0 2 75...

Page 33: ...7 2 5 0 None 0 0 41 1 50 E18 18 0 1 21 7 42 3 50 E36 36 0 2 43 3 69 4 70 E54 54 0 2 65 0 80 2 90 E72 72 0 2 86 6 101 9 110 575 8 3 78 0 9 5 9 4 0 None 0 0 32 2 40 E18 18 0 1 17 3 34 0 40 E36 36 0 2 3...

Page 34: ...ne 0 0 48 6 60 E18 18 0 1 17 3 48 6 60 E36 36 0 2 34 6 58 6 60 E54 54 0 2 52 0 67 2 70 E72 72 0 2 69 3 84 5 90 25 208 47 1 245 3 7 38 6 10 0 None 0 0 169 4 200 E18 13 5 1 37 5 169 4 200 E36 27 0 2 75...

Page 35: ...he assembled hood kit must be removed prior to final installation This hood is 54 long NOTE A 1 clearance must be provided between any combustible material and the supply air ductwork for a distance o...

Page 36: ...rtments to gain access to the bottom supply and return air duct covers 2 Remove and discard the bottom duct covers Duct open ings are closed with sheet metal covers except when the unit includes a pow...

Page 37: ...tatic pressure and BHP Since no temperature data is given we will assume an air temperature of 70 F Table 10 shows the correction factor to be 0 832 Corrected static pressure 1 5 x 0 832 1 248 IWC Cor...

Page 38: ...66354 BIM D 0904 38 Unitary Products Group FIGURE 14 ALTITUDE TEMPERATURE CONVERSION FACTOR...

Page 39: ...5 2 4 7 0 7 5 7 5 1 208 VOLT AND HIGH SPEED DRIVE 965 6 0 1 2 2 9 2 6 1 0 3 6 3 2 0 8 4 0 3 6 0 5 4 7 4 2 0 4 5 0 4 4 980 5 5 1 3 3 0 2 7 1 1 3 7 3 3 0 9 4 1 3 7 0 6 4 8 4 3 0 5 5 1 4 6 1025 4 5 1 5...

Page 40: ...5 0 980 5 0 1 6 5 3 4 5 1 4 5 8 4 9 1 2 6 3 5 3 0 7 6 9 5 8 1010 4 0 1 8 5 8 4 9 1 7 6 3 5 3 1 5 6 9 5 8 1 0 7 5 6 3 1020 3 5 1 9 6 1 5 1 1 8 6 5 5 5 1 6 7 1 6 0 1 1 7 8 6 6 1035 3 0 2 0 6 2 5 2 1 9...

Page 41: ...6 3 5 3 0 7 6 9 5 8 0 2 7 3 6 1 1010 4 0 1 8 5 8 4 9 1 7 6 3 5 3 1 5 6 9 5 8 1 0 7 5 6 3 0 5 7 9 6 7 1020 3 5 1 9 6 1 5 1 1 8 6 5 5 5 1 6 7 1 6 0 1 1 7 8 6 6 0 6 8 3 7 0 1035 3 0 2 0 6 2 5 2 1 9 6 8 5...

Page 42: ...1 0 4 4 3 9 0 8 5 0 4 5 0 6 5 6 5 0 208 VOLT AND HIGH SPEED DRIVE 965 6 0 1 2 2 7 2 5 0 9 3 2 2 9 0 6 3 7 3 3 0 4 4 4 3 9 0 2 5 0 4 5 980 5 5 1 3 2 9 2 6 1 0 3 4 3 0 0 7 3 8 3 4 0 5 4 5 4 0 0 3 5 1 4...

Page 43: ...2 6 9 5 8 980 5 0 1 9 4 5 3 8 1 5 5 4 4 5 1 0 6 3 5 3 0 4 7 2 6 1 995 4 5 2 1 4 5 3 9 1 6 5 5 4 7 1 1 6 4 5 4 0 5 7 5 6 3 1025 3 5 2 3 4 9 4 1 1 8 5 8 4 9 1 3 6 7 5 7 0 7 8 0 6 7 1050 2 5 2 5 5 1 4 3...

Page 44: ...0 1 9 4 5 3 8 1 5 5 4 4 5 1 0 6 3 5 3 0 4 7 2 6 1 0 1 8 5 7 1 995 4 5 2 1 4 5 3 9 1 6 5 5 4 7 1 1 6 4 5 4 0 5 7 5 6 3 0 2 8 6 7 3 1025 3 5 2 3 4 9 4 1 1 8 5 8 4 9 1 3 6 7 5 7 0 7 8 0 6 7 1050 2 5 2 5...

Page 45: ...3 13 7 11 2 1215 4 0 2 7 8 6 7 0 2 1 10 4 8 5 1 4 12 3 10 1 0 6 14 3 11 7 1255 3 0 3 0 9 1 7 4 2 4 11 0 9 0 1 7 12 9 10 6 0 9 15 0 12 3 1290 2 0 3 2 9 5 7 8 2 7 11 5 9 4 2 0 13 5 11 1 1 2 15 6 12 8 1...

Page 46: ...erformance table TABLE 19 POWER EXHAUST PERFORMANCE MOTOR SPEED STATIC RESISTANCE OF RETURN DUCTWORK IWG 0 2 0 3 0 4 0 5 0 6 CFM KW CFM KW CFM KW CFM KW CFM KW HIGH 5250 0 83 4500 0 85 4200 0 88 3750...

Page 47: ...left to the factory setting If the TXV s have been adjusted in the field The charging chart may no longer apply FIGURE 16 CHARGING CHART 17 5 TON 17 5 Ton Charging Chart 100 150 200 250 300 350 400 60...

Page 48: ...the TXV s left to the factory setting If the TXV s have been adjusted in the field the charging chart may no longer apply FIGURE 18 CHARGING CHART 25 TON 25 Ton Charging Chart 100 150 200 250 300 350...

Page 49: ...ly air blower and the motor pulley adjustment turns open can be determined from the Blower Per formance Data Tables High speed drive accessories containing a smaller blower pulley and a shorter belt a...

Page 50: ...Pressure Drop vs Supply Air CFM Figure 20 After readings have been obtained remove the tubes and reinstall the two 5 16 dot plugs that were removed in Step 1 NOTE DE ENERGIZE THE COMPRESSORS BEFORE TA...

Page 51: ...PY SENSOR When the room thermostat calls for first stage cool ing the low voltage control circuit from R to G and Y1 is completed The UCB energizes the blower motor if the fan switch on the room therm...

Page 52: ...cribed above the UCB will monitor the low pressure limit switch for any openings If the low pressure switch opens for greater than 5 seconds the UCB will de energize the associated compressor initiate...

Page 53: ...com pressor reset or lock out FLASH CODES The UCB will initiate a flash code associated with errors within the system Refer to UNIT CONTROL BOARD FLASH CODES Table 26 RESET Remove the call for coolin...

Page 54: ...e temperature This resets any flash codes HEAT ANTICIPATOR SETPOINTS It is important that the anticipator setpoint be correct Too high of a setting will result in longer heat cycles and a greater temp...

Page 55: ...ails to detect a pilot flame it will continue to try for a maximum of 85 seconds to ignite the pilot tube If the pilot flame is not detected then IC2 will lock out first stage furnace operation for fi...

Page 56: ...rnace Each valve contains a main and a redundant valve The redundant valves are located upstream of the main gas valves Should either or both of the main gas valves fail in the open position the redun...

Page 57: ...switch to on 5 Check indoor blower rotation If blower rotation is in the wrong direction Refer to Phasing Section in general informa tion section Check blower drive belt tension 6 Check the unit suppl...

Page 58: ...ion or turn gas valve switch to off position POST START CHECK LIST GAS After the entire control circuit has been energized and the heating section is operating make the following checks 1 Check for ga...

Page 59: ...controls function properly BURNER INSTRUCTIONS To check or change burners pilot or orifices CLOSE MAIN MANUAL SHUT OFF VALVE AND SHUT OFF ALL ELECTRIC POWER TO THE UNIT 1 Remove the screws holding eit...

Page 60: ...RE RISE The temperature rise or temperature difference between the return air and the heated air from the fur nace must lie within the range shown on the rating plate and the data in the Gas Heat Appl...

Page 61: ...t between R and G with the fan switch in the ON posi tion and in the AUTO position during operation calls b proper wiring between the room thermostat and the UCB and c loose wiring from the room therm...

Page 62: ...s present at the UCB Y1 terminal and none of the switches are open and the compressor is not locked out the UCB may have the compres sor in an ASCD Check the LED for an indication of an ASCD cycle The...

Page 63: ...and the compressor still does not oper ate replace the compressor 6 If 24 volts is not present at M2 check for 24 volts at the UCB terminal C2 If 24 volts are present check for loose wiring between C...

Page 64: ...If 24 volts are present at the UCB Y1 terminal the compressor may be out due to an open high pres sure switch low pressure switch or freezestat Check for 24 volts at the HPS1 LPS1 and FS1 terminals o...

Page 65: ...ates and the furnace lights but the supply air blower motor does not energize after a short delay the room thermostat fan switch is in AUTO position 1 Place the thermostat fan switch in the ON posi ti...

Page 66: ...een R and G during W1 calls On calls for heating the supply air blower operates but the draft motor does not the room thermostat fan switch is in the AUTO position 1 The draft motor has inherent prote...

Page 67: ...ec tions are intact 3 If the wiring is intact check for 24 volts across ter minals PV and COMMON on the ignitor control If 24 volts is not present replace the ignitor control 4 If 24 volts is present...

Page 68: ...D Pressing and releasing the ALARMS button on the UCB can check the alarm history The UCB will cycle through the last five 5 alarms most recent to oldest separating each alarm flash code by approximat...

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