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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

284816-BIM-B-0707

CONTENTS

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

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

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

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

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

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

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

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

OPERATION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

START-UP (COOLING) . . . . . . . . . . . . . . . . . . . . . . . . .53

START-UP (GAS HEAT) . . . . . . . . . . . . . . . . . . . . . . . .53

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . .56

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 dam-
age may result if installation procedure is not handled
properly.

Содержание DW-15

Страница 1: ...INSTALLATION 7 OPERATION 45 START UP COOLING 53 START UP GAS HEAT 53 TROUBLESHOOTING 56 See the following page for a complete Table of Contents NOTES CAUTIONS AND WARNINGS The installer should pay par...

Страница 2: ...D POWER ALTITUDE AND TEMPERATURE CORRECTIONS 32 PHASING 44 CHECKING SUPPLY AIR CFM 44 AIR BALANCE 44 OPERATION 45 SEQUENCE OF OPERATIONS OVERVIEW 45 COOLING SEQUENCE OF OPERATION 45 CONTINUOUS BLOWER...

Страница 3: ...PIPING 51 24 GAS VALVE AND CONTROLS 52 25 TYPICAL GAS VALVES 54 26 PROPER FLAME ADJUSTMENT 54 27 TYPICAL FLAME APPEARANCE 55 28 UNIT CONTROL BOARD 65 LIST OF TABLES Tbl Pg 1 UNIT APPLICATION DATA 8 2...

Страница 4: ...d install repair main tain 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 f...

Страница 5: ...attention to the words NOTE CAUTION and WARNING Notes are intended to clarify or make the installation easier Cau tions are given to prevent equipment damage Warn ings are given to alert installer th...

Страница 6: ...ed Filter Door Tool Free Access Panels BG Coil Guard Dirty Filter Switch Hinged Filter Door Tool Free Access Panels BH Phase Monitor Coil Guard Dirty Filter Switch Hinged Filter Door Tool Free Access...

Страница 7: ...n 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 ga...

Страница 8: ...unit is to be installed on a roof curb or special frame other than a UPG roof curb gasketing must be applied to all surfaces that come in contact with the unit under side TABLE 1 UNIT APPLICATION DATA...

Страница 9: ...ions 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 Gas...

Страница 10: ...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 ma...

Страница 11: ...or coil and 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 requir...

Страница 12: ...o s ta t 2 E T 0 7 7 0 0 1 0 0 2 4 i n c l u d e s s u b b a s e 2 T e r m i n a l s A 1 a n d A 2 p r o v i d e a r e l a y o u tp u t to c l o s e th e o u td o o r e c o n o m i z e r d a m p e r s...

Страница 13: ...uits Wire entry at knockout openings require conduit fittings to comply with NEC in U S A CEC in Can ada and or local codes Refer to the Dimensions Figure 13 for installation location If any of the wi...

Страница 14: ...its require a one inch pipe connection at the entrance fitting Maximum capacity of pipe in cubic feet of gas per hour Based upon a pressure drop of 0 3 inch water column and 0 6 specific gravity gas T...

Страница 15: ...ternal to the unit have been purged of air 5 The gas supply should be a separate line and installed in accordance with all safety codes as prescribed under Limitations After the gas con nections have...

Страница 16: ...kly dissolve white lead or most standard commercial compounds Shellac base compounds such as Rectorseal 5 are satisfactory for this type of gas Check all connections for leaks when piping is com plete...

Страница 17: ...d then off or energize and de energize terminals R to G MINIMUM POSITION ADJUSTMENT With thermostat set to indoor fan on position or termi nals R to G energized turn the Minimum Position Adjusting scr...

Страница 18: ...ply air duct and convert this pressure measure ment to a proportional 0 5 VDC electrical output Pressure transmitting plastic tubing 1 4 diameter must be field supplied and installed from the transduc...

Страница 19: ...it set point is adjustable between 0 WC and 5 WC with the factory default setting of 4 5 WC If the duct static pressure reaches the high limit set point then the supply fan motor will be shutdown NOTE...

Страница 20: ...learances to allow for adequate internal cooling of the drive during operation The unit comes with a mounting bracket installed in the Blower Access compartment which may accommodate other vendor s dr...

Страница 21: ...essure modulating bypass control valve installed on the system 1 discharge line is used to divert high tem perature high pressure refrigerant around the TXV in order to maintain a desired minimum evap...

Страница 22: ...SO SO SR SR A B C D TR TR1 24 Vac HOT 24 Vac COM EF EF1 2 3 4 5 1 Exhaust Air Adjustment Screw Exhaust Air LED Damper Min Position Screw Indoor Air Quality Max Adjustment Screw Indoor Air Quality LED...

Страница 23: ...438 18 Elec 2728 476 888 888 476 20 Elec 2760 481 899 899 481 25 Elec 2846 496 927 927 496 Unit Size Total Shipping Weight 6 Point Loads lbs A B C D E F 15 Gas 2660 302 316 453 590 565 434 18 Gas 2928...

Страница 24: ...IGERANT 22 Lb Oz SYSTEM No 1 23 0 24 0 23 8 23 8 SYSTEM No 2 23 8 24 0 23 8 23 8 OPERATING WEIGHTS LBS BASIC UNIT COOLING ONLY 2260 2540 2560 2660 GAS ELECTRIC N30 2460 2740 2760 2860 N40 2500 2780 28...

Страница 25: ...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...

Страница 26: ...5 8 2 0 0 None 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 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...

Страница 27: ...1 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...

Страница 28: ...8 2 4 0 None 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 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...

Страница 29: ...4 21 00 6 3 8 7 1 8 35 5 7 8 136 1 4 GAS OR ELECTRIC HEAT ACCESS DOT PLUG For pressure drop reading BLOWER COMPARTMENT ACCESS Auxiliary C GAS SUPPLY ENTRY CONTROL BOX ACCESS VENT AIR OUTLET HOODS BLOW...

Страница 30: ...xhaust option The covering consists of a heavy black paper composition 3 Replace the side supply and return air compartment panels For side duct applications 1 Replace the side panels on the supply an...

Страница 31: ...ATION CLEARANCE Front 36 Rear 24 Less Economizer 49 With Economizer Left Side Filter Access 24 Less Economizer 36 With Economizer 3 Right Side Cond Coil 36 Below Unit1 1 Units may be installed on comb...

Страница 32: ...tatic pressure and BHP Since no temperature data is given we will assume an air temperature of 70 F Table 11 shows the correction factor to be 0 832 Corrected static pressure 1 5 x 0 832 1 248 IWC Cor...

Страница 33: ...284816 BIM B 0707 Unitary Products Group 33 FIGURE 16 ALTITUDE TEMPERATURE CONVERSION FACTOR...

Страница 34: ...5 2 4 7 0 7 5 7 5 1 208 VOLT AND HIGH STATIC 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...

Страница 35: ...9 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...

Страница 36: ...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...

Страница 37: ...1 0 4 4 3 9 0 8 5 0 4 5 0 6 5 6 5 0 208 VOLT AND HIGH STATIC 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...

Страница 38: ...0 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...

Страница 39: ...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...

Страница 40: ...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...

Страница 41: ...rformance table TABLE 20 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 0...

Страница 42: ...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 17 5 TON 17 5 Ton Charging Chart 100 150 200 250 300 350 400 6...

Страница 43: ...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 20 CHARGING CHART 25 TON 25 Ton Charging Chart 100 150 200 250 300 350...

Страница 44: ...and 20 ton units and Model 1LD0435 for 25 ton units Refer to the Blower Motor and Drive Data Table 21 Note the following 1 The supply air CFM must be within the limitations shown in the Unit Applicati...

Страница 45: ...electric heat units the UCB passes the call to the electric heater In both cases when the W1 call is sensed the indoor air blower is energized following a specified heating delay If at any time a call...

Страница 46: ...e 60 F When the thermostat calls for second stage cooling the low voltage control circuit from R to Y2 is com pleted The UCB energizes the first available compres sor If the enthalpy of the outdoor ai...

Страница 47: ...pon de energizing the final compressor the blower will continue to run with the economizer damper in its minimum position if in the Occupied mode otherwise the blower will stop following the elapse of...

Страница 48: ...is necessary to defrost the indoor coil Low ambient mode always begins with compressor operation Compressor minimum run time may extend the minutes of compressor operation The defrost cycle will begin...

Страница 49: ...heaters should the primary limit fail to open or the contactors fail to open in a failure mode HEATING OPERATION ERRORS TEMPERATURE LIMIT If the UCB senses zero volts from the high temperature limit t...

Страница 50: ...has been ignited and the presence of pilot flame detected at the IC1 by a signal sent back through the flame sensor is sparking terminated and the first stage main gas valve opened Gas flows into eac...

Страница 51: ...are ceased The GV is immediately de energized The blower is de energized after the fan off delay for heat ing has elapsed The draft motor performs a 25 second post purge GAS HEATING OPERATION ERRORS T...

Страница 52: ...and locks out both ignition controls closing both gas valves The ignition controls lock out furnace operation until 24V power is removed from the controls either at the unit or by resetting the room t...

Страница 53: ...for both circuits 2 Measure the temperature drop across the evapora tor coil 3 Measure the system Amperage draw across all legs of 3 phase power wires 4 Measure the condenser fan amp draw SHUT DOWN 1...

Страница 54: ...URE ADJUSTMENT Small adjustments to the high fire gas flow may be made by turning the pressure regulator adjusting screw on the automatic gas valve Adjust as follows 1 Remove the cap on the regulator...

Страница 55: ...as meter 2 With the furnace turned on measure the time needed for one revolution of the hand on the small est dial on the meter A typical gas meter usually has a 1 2 or a 1 cubic foot test dial 3 Usin...

Страница 56: ...th VFD check that line voltage is being supplied to the M3 Auxiliary contacts Check for loose wiring between the contactor and the supply air blower motor 4 If M3 is pulled in and voltage is supplied...

Страница 57: ...mpres sor 1 does not energize on a call for cooling check for line voltage at the compressor contactor M1 and that the contactor is pulled in Check for loose wiring between the contactor and the com p...

Страница 58: ...lt Local distributors can test the UCB for this programming For units with factory installed economizers the UCB is programmed to lock out compressor opera tion when the LAS set point is reached For u...

Страница 59: ...w ambi ent conditions These options are not enabled by default Local distributors can test the UCB for this programming For units with factory installed economizers the UCB is programmed to lock out c...

Страница 60: ...T terminal of the UCB If 24 volts is present trace the wiring from Y1 OUT for incorrect wiring If 24 volts is not present at the Y1 OUT terminal the UCB must be replaced 12 For units without economize...

Страница 61: ...ult warning messages displayed on the drive s digital display refer to the drive user manual for full descriptions if necessary Clear any fault by pressing RESET on the drive s keypad and take any cor...

Страница 62: ...es not light and the sparker does not spark 1 The ignition control IC1 IC2 may be locked out due to either a flame roll out or 100 shut off These safety features are described above If lock out has oc...

Страница 63: ...er gas valve and ignitor control are intact Check the high tension wire for good electrical con nection If all are intact replace the ignitor module The pilot burner lights and the spark stops but the...

Страница 64: ...Flashing Off Off On Off 3 Flashes HPS1 Compressor Lockout Off Off Off On On 4 Flashes HPS2 Compressor Lockout Off Off On Off Off 5 Flashes LPS1 Compressor Lockout Off Off On Off On 6 Flashes LPS2 Comp...

Страница 65: ...the display will revert to its normal display exiting the Option Setup mode When saving the control board only saves the parameters for the currently dis played mode Option Byte or Heat Delay HEAT DEL...

Страница 66: ...a 1 flash flash code is not used TABLE 28 HEAT DELAY Heat Fan On Delay Heat Fan Off Delay Red LED 8 Red LED 4 Red LED 2 Red LED 1 60 180 On On On On 60 90 On On On Off 60 60 On On Off On 60 30 On On...

Страница 67: ...284816 BIM B 0707 Unitary Products Group 67...

Страница 68: ...t to change without notice Printed in U S A 284816 BIM B 0707 Copyright 2007 by Unitary Products Group All rights reserved Supersedes 284816 BIM A 0107 Unitary 5005 Norman Products York OK Group Drive...

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