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INSTALLATION
MANUAL
CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . 5
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
RENEWAL PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
START-UP (COOLING) . . . . . . . . . . . . . . . . . . . . . . . . . 65
START-UP (GAS HEAT) . . . . . . . . . . . . . . . . . . . . . . . . 66
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . 73
See following pages 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.
CAUTION:
READ ALL SAFETY GUIDES BEFORE YOU
BEGIN TO INSTALL YOUR UNIT.
SAVE THIS MANUAL
SINGLE PACKAGE AIR CONDITIONERS AND
SINGLE PACKAGE GAS/ELECTRIC UNITS
DL/DU -06, -07, -08, -10 and -12
6-1/2 TO 12-1/2 TON
(9.0 TO 11.5 EER)
Tested in accordance with:
167791-BIM-B-0606
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Summary of Contents for York DL-06
- Page 1 INSTALLATION MANUAL SINGLE PACKAGE AIR CONDITIONERS AND SINGLE PACKAGE GAS/ELECTRIC UNITS CONTENTS GENERAL ........5 DL/DU -06, -07, -08, -10 and -12 SAFETY CONSIDERATIONS .
-
Page 2: Table Of Contents
167791-BIM-B-0606 TABLE OF CONTENTS GENERAL ........5 ECONOMIZER WITH POWER EXHAUST . - Page 3 8 CONTROL WIRE SIZES......17 EFFICIENCY W/O PWRD CONV. OUTLET ..26 9 ELECTRICAL DATA - DL-06 (6-1/2 TON) STANDARD 22 ELECTRICAL DATA - DL-10 (10 TON) STANDARD EFFICIENCY W/O PWRD CONV.
- Page 4 34 SUPPLY AIR LIMITATIONS ..... 36 SIDE SHOT BLOWER PERFORMANCE... 54 35 DL-06 (6-1/2 TON) STANDARD MOTOR DOWN 58 DL, DU-12 (12-1/2 TON) OPTIONAL MOTOR SHOT BLOWER PERFORMANCE.
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Page 5: General
167791-BIM-B-0606 GENERAL UPG DL/DU units are single package air conditioners with optional gas heating designed for outdoor installation on a rooftop or slab and for non-residential use. These units can If the information in this manual is not followed be equipped with factory or field installed electric heaters for exactly, a fire or explosion may result causing prop- heating applications. -
Page 6: Reference
For use as a cooling only unit, cooling unit with supple- • Technical Guide - DU-06 thru -12, 246650 mental electric heat or a forced air furnace. • Technical Guide - DL-06 thru -12, 246713 For outdoor installation only. • General Installation - DU/DL-06 thru -12, 167791 For installation on combustible material and may be •... -
Page 7: Nomenclature
167791-BIM-B-0606 NOMENCLATURE 6.5-12.5 Ton Single Package Model Number Nomenclature D U -10 N18 A T A AA 3 0 1 2 4 A Product Category Product Style D = A/C, Single Pkg., R-22 A = Style A B = Style B Product Identifier Configuration Options (not required for all units) These four digits will not be assigned until a quote is requested, or an order placed. -
Page 8: Installation
167791-BIM-B-0606 INSTALLATION Turn each bracket toward the ground and the protective plywood covering will drop to the ground. INSTALLATION SAFETY INFORMATION Remove the condenser coil external protective covering Read these instructions before continuing this appliance prior to operation. installation. This is an outdoor combination heating and cool- ing unit. -
Page 9: Limitations
167791-BIM-B-0606 Gas-Fired Central Furnace Standard, ANSI Z21.47a. - Latest Edition Local building codes, and This product must be installed in strict compliance with the enclosed installation instructions and any applica- Local gas utility requirements ble local, state and national codes including, but not limited to, building, electrical, and mechanical codes. -
Page 10: Location
167791-BIM-B-0606 ® Simplicity Control Board Terminal Block Filter Access w/Screw Connector for T- Disconnect Location Filter-Drier (Solid Core) (2” Filters) for Hi-Voltage stat Wiring and Network (Optional Disconnect Switch) Connection Connection Condenser Section Second model nameplate inside hinged access panel Belt-Drive Blower Motor... -
Page 11: Rigging And Handling
Shipping Weight (lb.) Operating Weight (lb.) Exercise care when moving the unit. Do not remove any DL-06 1056 1041 packaging until the unit is near the place of installation. Rig DL-07 the unit by attaching chain or cable slings to the lifting holes DL-08 provided in the base rails. -
Page 12: Clearances
Model and service. Installer must make provisions for adequate combustion and ventilation air in accordance with section 5.3 DL-06 of Air for Combustion and Ventilation of the National Fuel Gas DL-07 Code, ANSI Z223.1 – Latest Edition (in U.S.A.), or Sections DL-08 7.2, 7.3, or 7.4 of Gas Installation Codes, CSA-B149.1 (in... -
Page 13: Unit Dimensions
NOTE: A one-inch clearance must be provided between TABLE 6: UNIT HEIGHT any combustible material and the supply ductwork Unit Model Number for a distance of 3 feet from the unit. DL-06 50 3/4 DL-07 DETAIL B 2 - 3 / 8... -
Page 14: Bottom Duct Openings
167791-BIM-B-0606 32-11/16 6-13/16 Supply 6-13/16 6-13/16 Return LEFT 27-1/2 21-3/16 19-3/16 17-3/16 12-5/16 7-1/8 FRONT 14-23/32 16-3/8 Bottom Bottom Bottom 18-1/16 Condensate Power, Control and Gas Supply Entry Drain Convenience Outlet 19-5/8 Wiring Entries 63-1/2 FIGURE 9 - BOTTOM DUCT OPENINGS (FROM ABOVE) 18-1/4 Dot Plugs REAR DUCT DIMENSIONS... -
Page 15: Ductwork
167791-BIM-B-0606 DUCTWORK DUCT COVERS Units are shipped with the side duct openings covered and a Ductwork should be designed and sized according to the covering over the bottom of the unit. For bottom duct applica- methods in Manual D of the Air Conditioning Contractors of tion, no duct cover changes are necessary. -
Page 16: Condensate Drain
167791-BIM-B-0606 CONDENSATE DRAIN The side condensate drain is reversible and maybe re-ori- ented to the rear of the cabinet to facilitate condensate pip- ing. A condensate drain connection is available through the When fastening ductwork to side duct flanges on base pan for piping inside the roof curb. -
Page 17: Thermostat Wiring
167791-BIM-B-0606 THERMOSTAT WIRING The thermostat should be located on an inside wall approxi- mately 56 inch above the floor where it will not be subject to Avoid damage to internal components if drilling drafts, sun exposure or heat from electrical fixtures or appli- holes for disconnect mounting. -
Page 18: Electronic Thermostat Field Wiring
167791-BIM-B-0606 T H E R M O S T A T T E R M I N A L S U N I T T E R M I N A L S S T R I P T B 1 V o l t T r a n s f o r m O C C... -
Page 19: Field Wiring Disconnect - Cooling Unit With/Without Electric Heat
167791-BIM-B-0606 TERMINAL BLOCK TB1 FACTORY OR FIELD SUPPLIED DISCONNECT GROUND THREE PHASE POWER SUPPLY FIGURE 19 - FIELD WIRING DISCONNECT - COOLING UNIT WITH/WITHOUT ELECTRIC HEAT CONTACTOR 1M FACTORY OR FIELD SUPPLIED DISCONNECT GROUND THREE PHASE POWER SUPPLY FIGURE 20 - FIELD WIRING DISCONNECT - COOLING UNIT WITH GAS HEAT Unitary Products Group... -
Page 20: Electrical Data - Dl-06 (6-1/2 Ton) Standard Efficiency W/O Pwrd Conv. Outlet
167791-BIM-B-0606 TABLE 9: ELECTRICAL DATA - DL-06 (6-1/2 TON) STANDARD EFFICIENCY W/O PWRD CONV. OUTLET Max Fuse* Size Supply Min. Circuit OD Fan w/Power Fuse* w/Power Compressors Blower Conv Ampacity Electric Heater Actual Heater Motors Exhaust Size Exhaust Voltage Motor FLA... -
Page 21: Electrical Data - Du-06 (6-1/2 Ton) High Efficiency W/O Pwrd Conv. Outlet
167791-BIM-B-0606 TABLE 11: ELECTRICAL DATA - DU-06 (6-1/2 TON) HIGH EFFICIENCY W/O PWRD CONV. OUTLET Max Fuse Size Supply Min. Circuit OD Fan w/Power Max Fuse* w/Power Compressors Blower Conv Ampacity Electric Heater Actual Heater Motors Exhaust Size (Amps) Exhaust Voltage Motor FLA Motor... -
Page 22: Electrical Data - Dl-07 (7-1/2 Ton) Standard Efficiency W/O Pwrd Conv. Outlet
167791-BIM-B-0606 TABLE 13: ELECTRICAL DATA - DL-07 (7-1/2 TON) STANDARD EFFICIENCY W/O PWRD CONV. OUTLET Supply Max Fuse Size OD Fan Pwr Exh Min. Circuit MCA w/Power Max Fuse* Compressors Blower Motor Conv w/Power Exhaust Ampacity (Amps) Exhaust (Amps) Size (Amps) Motors Motor Electric Heater... -
Page 23: Electrical Data - Du-07 (7-1/2 Ton) High Efficiency W/O Pwrd Conv. Outlet
167791-BIM-B-0606 TABLE 15: ELECTRICAL DATA - DU-07 (7-1/2 TON) HIGH EFFICIENCY W/O PWRD CONV. OUTLET Supply Max Fuse Size OD Fan Pwr Exh Min. Circuit MCA w/Power Max Fuse* Compressors Blower Motor Conv w/Power Exhaust Motors Motor Electric Heater Actual Heater Ampacity (Amps) Exhaust (Amps) -
Page 24: Electrical Data - Dl-08 (8-1/2 Ton) Standard Efficiency W/O Pwrd Conv. Outlet
167791-BIM-B-0606 TABLE 17: ELECTRICAL DATA - DL-08 (8-1/2 TON) STANDARD EFFICIENCY W/O PWRD CONV. OUTLET Max Fuse Size Min. Circuit MCA w/Power OD Fan Supply Blower Pwr Exh Max Fuse* w/Power Compressors Conv Ampacity Exhaust Motors Motor FLA Motor Size (Amps) Exhaust Electric Heater Actual... -
Page 25: Electrical Data - Du-08 (8-1/2 Ton) High Efficiency W/O Pwrd Conv. Outlet
167791-BIM-B-0606 TABLE 19: ELECTRICAL DATA - DU-08 (8-1/2 TON) HIGH EFFICIENCY W/O PWRD CONV. OUTLET Max Fuse Size Min. Circuit MCA w/Power OD Fan Supply Blower Pwr Exh Max Fuse* w/Power Compressors Conv Ampacity Exhaust Motors Motor FLA Motor Size (Amps) Exhaust Electric Heater Actual... -
Page 26: Electrical Data - Dl-10 (10 Ton) Standard Efficiency W/O Pwrd Conv. Outlet
167791-BIM-B-0606 TABLE 21: ELECTRICAL DATA - DL-10 (10 TON) STANDARD EFFICIENCY W/O PWRD CONV. OUTLET Max Fuse* Size Supply Min. Circuit OD Fan w/Power Fuse* w/Power Compressors Blower Conv Ampacity Motors Electric Heater Actual Heater Exhaust Size Exhaust Voltage Motor FLA Motor Outlet (Amps) -
Page 27: Electrical Data - Du-10 (10 Ton) High Efficiency W/O Pwrd Conv. Outlet
167791-BIM-B-0606 TABLE 23: ELECTRICAL DATA - DU-10 (10 TON) HIGH EFFICIENCY W/O PWRD CONV. OUTLET Max Fuse* Size Supply Min. Circuit OD Fan w/Power Fuse* w/Power Compressors Blower Conv Ampacity Motors Electric Heater Actual Heater Exhaust Size Exhaust Voltage Motor FLA Motor Outlet (Amps) -
Page 28: Electrical Data - Dl-12 (12-1/2 Ton) Standard Efficiency W/O Pwrd Conv. Outlet
167791-BIM-B-0606 TABLE 25: ELECTRICAL DATA - DL-12 (12-1/2 TON) STANDARD EFFICIENCY W/O PWRD CONV. OUTLET Supply Min. Circuit OD Fan w/Power Fuse* Fuse Compressors Blower Conv Ampacity Motors Electric Heater Actual Heater Exhaust Size Size Voltage Motor FLA Motor Outlet (Amps) Model No. -
Page 29: Electrical Data - Du-12 (12-1/2 Ton) High Efficiency W/O Pwrd Conv. Outlet
167791-BIM-B-0606 TABLE 27: ELECTRICAL DATA - DU-12 (12-1/2 TON) HIGH EFFICIENCY W/O PWRD CONV. OUTLET Max Fuse* Size Supply Min. Circuit OD Fan w/Power Fuse * w/Power Compressors Blower Conv Ampacity Electric Heater Actual Heater Motors Exhaust Size Exhaust Voltage Motor FLA Motor Outlet... -
Page 30: Dl Physical Data
167791-BIM-B-0606 TABLE 29: DL PHYSICAL DATA Models Component Blower, Centrifugal (Dia X Wd. In) 15 x 15 12 x 12 12 X 12 15 x 15 15 x 15 Evaporator Motor, Standard (HP) 1-1/2 Blower Motor, Optional (HP) Rows Evaporator Fins per Inch Coil Height (in.) -
Page 31: Optional Electric Heat
167791-BIM-B-0606 OPTIONAL ELECTRIC HEAT GAS PIPING Proper sizing of gas piping depends on the cubic feet per The factory-installed heaters are wired for single point power hour of gas flow required, specific gravity of the gas and the supply. Power supply need only be brought into the single length of run. -
Page 32: Gas Connection
167791-BIM-B-0606 All piping should be cleaned of dirt and scale by ham- TABLE 33: GAS PIPE SIZING - CAPACITY OF PIPE mering on the outside of the pipe and blowing out loose Nominal Iron Pipe Size Length of particles. Before initial start-up, be sure that all gas lines Pipe (ft.) 3/4 in. -
Page 33: Lp Units, Tanks And Piping
167791-BIM-B-0606 LP UNITS, TANKS AND PIPING flue exhaust is routed through factory installed exhaust piping with screen. If necessary, a flue exhaust extension may be All gas heat units are shipped from the factory equipped for installed at the point of installation. natural gas use only. -
Page 34: Rain Hood
167791-BIM-B-0606 RAIN HOOD • For a single enthalpy operation carefully turn the set point adjusting screw (found on the damper control mod- All of the hood components, including the filters, the gasket- ule) to the "A", "B", "C" or "D" setting corresponding to ing and the hardware for assembling, are packaged and the lettered curve of the Enthalpy Set Point Adjustment located between the condenser coil section and the main unit... -
Page 35: Enthalpy Set Point Chart
167791-BIM-B-0606 CONTROL POINT CONTROL APPROX. CURVE (29) (32) (35) (38) (41) (43) AT 50% RH 73 (23) 70 (21) (27) 67 (19) 63 (17) (24) (21) (18) (16) (13) (10) (10) (13) (16) (21) (24) (27) (29) (32) (38) (41) (43) (18) (35) -
Page 36: Phasing
167791-BIM-B-0606 PHASING DL/DU units are properly phased at the factory. Check for proper compressor rotation. If the blower or compressors rotate in the wrong direction at start-up, the electrical connec- tion to the unit is misphased. Change the phasing of the Field Line Connection at the factory or field supplied discon- nect to obtain proper rotation. -
Page 37: 6-1/2 Ton) Standard Motor Down Shot Blower Performance
167791-BIM-B-0606 TABLE 35: DL-06 (6-1/2 TON) STANDARD MOTOR DOWN SHOT BLOWER PERFORMANCE TURNS OPEN 3291 1191 1.28 3096 1059 1.14 2963 1.02 2757 0.89 3168 1225 1.31 2969 1085 1.16 2658 1.01 2535 0.89 2255 0.77 3223 1273 1.37 2732 1084 1.16... -
Page 38: 6-1/2 Ton) Standard Motor Down Shot Blower Performance
167791-BIM-B-0606 TABLE 37: DU-06 (6-1/2 TON) STANDARD MOTOR DOWN SHOT BLOWER PERFORMANCE Unitary Products Group... -
Page 39: 6-1/2 Ton) Optional Motor Down Shot Blower Performance
167791-BIM-B-0606 TABLE 38: DU-06 (6-1/2 TON) OPTIONAL MOTOR DOWN SHOT BLOWER PERFORMANCE TURNS OPEN 0 Turns 1 Turn 2 Turns 3 Turns 4 Turns 5 Turns CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM –... -
Page 40: Dl, Du-07 (7-1/2 Ton) Standard Motor Down Shot Blower Performance
167791-BIM-B-0606 TABLE 39: DL, DU-07 (7-1/2 TON) STANDARD MOTOR DOWN SHOT BLOWER PERFORMANCE Unitary Products Group... -
Page 41: Dl, Du-07 (7-1/2 Ton) Optional Motor Downshot Blower Performance
167791-BIM-B-0606 TABLE 40: DL, DU-07 (7-1/2 TON) OPTIONAL MOTOR DOWNSHOT BLOWER PERFORMANCE TURNS OPEN 0 Turns 1 Turn 2 Turns 3 Turns 4 Turns 5 Turns CFM RPM W BHP CFM RPM W BHP CFM RPM W BHP CFM RPM W BHP CFM RPM W BHP CFM RPM W 3995 1299 2790 3.0... -
Page 42: Dl, Du-08 (8-1/2 Ton) Standard Motor Down Shot Blower Performance
167791-BIM-B-0606 TABLE 41: DL, DU-08 (8-1/2 TON) STANDARD MOTOR DOWN SHOT BLOWER PERFORMANCE TURNS OPEN 0 Turns 1 Turn 2 Turns 3 Turns 4 Turns 5 Turns CFM RPM W BHP CFM RPM W BHP CFM RPM W BHP CFM RPM W BHP CFM RPM W BHP CFM RPM W 3995 1299 2790 3.0... -
Page 43: Dl, Du-08 (8-1/2 Ton) Optional Drive Down Shot Blower Performance
167791-BIM-B-0606 TABLE 42: DL, DU-08 (8-1/2 TON) OPTIONAL DRIVE DOWN SHOT BLOWER PERFORMANCE TURNS OPEN 0 Turns 1 Turn 2 Turns 3 Turns 4 Turns 5 Turns CFM RPM W BHP CFM RPM W BHP CFM RPM W BHP CFM RPM W BHP CFM RPM W BHP CFM 4073 1346 2930 3.1... -
Page 44: Dl, Du-10 (10 Ton) Standard Motor Down Shot Blower Performance
167791-BIM-B-0606 TABLE 43: DL, DU-10 (10 TON) STANDARD MOTOR DOWN SHOT BLOWER PERFORMANCE TURNS OPEN 3896 1639 1.76 3688 1453 1.56 3447 1268 1.36 4040 2076 2.23 4005 1934 2.07 3790 1698 1.82 3569 1508 1.62 3333 1330 1.43 3057 1147 1.23 3890... -
Page 45: Dl, Du-12 (12-1/2 Ton) Standard Motor Down Shot Blower Performance
167791-BIM-B-0606 TABLE 45: DL, DU-12 (12-1/2 TON) STANDARD MOTOR DOWN SHOT BLOWER PERFORMANCE TURNS OPEN 5078 3630 3.89 4809 3103 3.33 4594 3053 3.27 4360 2478 2.66 4090 2093 2.24 3812 1798 1.93 4865 3456 3.71 4584 2961 3.17 4349 2912 3.12 4106... -
Page 46: 6-1/2 Ton) Standard Motor Side Shot Blower Performance
167791-BIM-B-0606 TABLE 47: DL-06 (6-1/2 TON) STANDARD MOTOR SIDE SHOT BLOWER PERFORMANCE TURNS OPEN 3367 1216 1.30 3133 1067 1.14 2954 1.01 2701 0.88 3208 1239 1.33 2913 1068 1.15 2466 0.98 2350 0.85 1750 0.67 2651 1058 1.13 2317 0.96... -
Page 47: 6-1/2 Ton) Standard Motor Side Shot Blower Performance
167791-BIM-B-0606 TABLE 49: DU-06 (6-1/2 TON) STANDARD MOTOR SIDE SHOT BLOWER PERFORMANCE TURNS OPEN 0 Turns 1 Turn 2 Turns 3 Turns 4 Turns 5 Turns CFM RPM W BHP CFM RPM W BHP CFM RPM W BHP CFM RPM W BHP CFM RPM W BHP CFM –... -
Page 48: 6-1/2 Ton) Optional Motor Side Shot Blower Performance
167791-BIM-B-0606 TABLE 50: DU-06 (6-1/2 TON) OPTIONAL MOTOR SIDE SHOT BLOWER PERFORMANCE Unitary Products Group... -
Page 49: Dl, Du-07 (7-1/2 Ton) Standard Motor Side Shot Blower Performance
167791-BIM-B-0606 TABLE 51: DL, DU-07 (7-1/2 TON) STANDARD MOTOR SIDE SHOT BLOWER PERFORMANCE Unitary Products Group... -
Page 50: Dl, Du-07 (7-1/2 Ton) Optional Side Shot Blower Performance
167791-BIM-B-0606 TABLE 52: DL, DU-07 (7-1/2 TON) OPTIONAL SIDE SHOT BLOWER PERFORMANCE Unitary Products Group... -
Page 51: Dl, Du-08 (8-1/2 Ton) Standard Motor Side Shot Blower Performance
167791-BIM-B-0606 TABLE 53: DL, DU-08 (8-1/2 TON) STANDARD MOTOR SIDE SHOT BLOWER PERFORMANCE Unitary Products Group... -
Page 52: Dl, Du-08 (8-1/2 Ton) Optional Drive Side Shot Blower Performance
167791-BIM-B-0606 TABLE 54: DL, DU-08 (8-1/2 TON) OPTIONAL DRIVE SIDE SHOT BLOWER PERFORMANCE Unitary Products Group... -
Page 53: Dl, Du-10 (10 Ton) Standard Motor Side Shot Blower Performance
167791-BIM-B-0606 TABLE 55: DL, DU-10 (10 TON) STANDARD MOTOR SIDE SHOT BLOWER PERFORMANCE TURNS OPEN 4368 1843 1.98 4132 1624 1.74 3870 1423 1.53 4515 2192 2.35 4213 1885 2.02 4020 1692 1.81 3791 1491 1.60 3499 1283 1.38 4192 2027 2.17 3905... -
Page 54: Dl, Du-12 (12-1/2 Ton) Standard Motor Side Shot Blower Performance
167791-BIM-B-0606 TABLE 57: DL, DU-12 (12-1/2 TON) STANDARD MOTOR SIDE SHOT BLOWER PERFORMANCE TURNS OPEN 5201 3162 3.39 4966 2796 3.00 4681 2405 2.58 4355 2054 2.20 5220 3395 3.64 4942 2980 3.20 4657 2608 2.80 4358 2230 2.39 4007 1890 2.03 4944... -
Page 55: Indoor Blower Specifications
Eff. Frame Datum Dia. (in.) Bore (in.) Model Datum Dia. (in.) Bore (in.) Model 1-1/2 1725 1.15 3.4 - 4.4 1VM50 AK99 DL-06 1725 1.15 3.4 - 4.4 1VM50 AK79 1-1/2 1725 1.15 3.4 - 4.4 1VM50 AK74 DU-06 1725 1.15... -
Page 56: Air Balance
167791-BIM-B-0606 AIR BALANCE Start the supply air blower motor. Adjust the resistances in both the supply and the return air duct systems to balance the air dis- tribution throughout the conditioned space. The job specifications may require that this balancing be done by someone other than the equipment installer. -
Page 57: Dry Coil Delta P 50" Cabinet
167791-BIM-B-0606 FIGURE 26 - DRY COIL DELTA P 50" CABINET FIGURE 27 - DRY COIL DELTA P 42" CABINET Unitary Products Group... -
Page 58: Supply Air Drive Adjustment
167791-BIM-B-0606 SUPPLY AIR DRIVE ADJUSTMENT EXAMPLE A 12.5 ton unit was selected to deliver 4,000 CFM with a 3 HP motor, but the unit is delivering 3,800 CFM. The variable pitch motor sheave is set at 2 turns open. Use the equation to determine the required DD for the new Before making any blower speed changes review motor sheave, the installation for any installation errors, leaks or... -
Page 59: Additional Static Resistance
167791-BIM-B-0606 TABLE 61: ADDITIONAL STATIC RESISTANCE DL-06, -10, -12 AND DU-10, -12 Electric Heat KW Cooling Only Economizer 1900 0.06 0.02 0.05 0.06 0.07 0.08 0.10 2100 0.07 0.02 0.06 0.07 0.08 0.09 0.11 2300 0.08 0.02 0.07 0.08 0.09 0.10... -
Page 60: Operation
167791-BIM-B-0606 NO OUTDOOR AIR OPTIONS TABLE 63: MOTOR SHEAVE DATUM DIAMETERS 1VM50x7/8 1VP56x1-1/8 When the thermostat calls for the first stage of cooling, the (1-1/2, 2 & 3 HP Motor) (5 HP Motor) low-voltage control circuit from “R” to “Y1” and “G” is com- pleted. -
Page 61: Economizer With Dual Enthalpy Sensors
167791-BIM-B-0606 completed. Upon the final compressor de-energizing, the Once the low-pressure switch has been proven (closed dur- blower is stopped following the elapse of the fan off delay for ing the 30-second monitor period described above), the UCB cooling, and the economizer damper goes to the closed posi- will monitor the low-pressure limit switch for any openings. -
Page 62: Compressor Protection
Refer to UNIT CONTROL BOARD FLASH OPENS °F CODES Table 80. DL-06 (6.5) DL-06, -10, -12 (6.5, 10, 12.5) RESET DU-10, -12 (10, 12.5) DL-06, -10, -12 (6.5, 10, 12.5) Remove the call for cooling, by raising thermostat setting 208/230 DU-10, -12 (10, 12.5) -
Page 63: Flash Codes
167791-BIM-B-0606 fan on delay for heating, energizing the indoor blower the TABLE 65: ELECTRIC HEAT LIMIT SETTING 42” specified delay has elapsed. CABINET When the thermostat has been satisfied, heating calls are LIMIT HEATER ceased. The GV is immediately closed. The blower is de- UNIT (TONS) VOLTAGE SWITCH... -
Page 64: Recycle Operation
167791-BIM-B-0606 RECYCLE OPERATION If voltage has been sensed at the GV for at least 15 seconds during the fan on delay for heating and GV voltage or “W1” is When a flame is lost after the flame stabilization period, a lost, the indoor blower is forced on for the length of the fan off recycle operation occurs. -
Page 65: Pressure Switch (Ps)
167791-BIM-B-0606 The ICB monitors the Pressure and Rollout switches of gas heat units. The control circuit includes the following safety controls: H E A T E X C H A N G E R T U B E PRESSURE SWITCH (PS) Once the draft motor has reached full speed and closes the G A S pressure switch during a normal ignition sequence, if the... -
Page 66: Post Start Check List
167791-BIM-B-0606 POST START CHECK LIST Check for correct manifold gas pressures. (See ’CHECK- ING GAS INPUT’.) Verify proper system pressures for both circuits. Check the supply gas pressure. It must be within the lim- Measure the temperature drop across the evaporator coil. its shown on the rating nameplate. -
Page 67: Checking Gas Input
167791-BIM-B-0606 valve) clockwise to increase manifold pressure or Even when the thermostat is calling for first stage heat, counterclockwise to decrease manifold pressure. Be the unit will light on second stage and will run on Second sure not to under-fire the unit on first stage. stage for 1 minute. -
Page 68: Adjustment Of Temperature Rise
167791-BIM-B-0606 EXAMPLE: Remove the screws holding each end of the manifold to the manifold supports. By actual measurement, it takes 19 seconds for the hand on Disconnect wiring to the gas valves and spark igniter(s). a 1 cubic foot dial to make a revolution with a 192,000 Btuh Remove the manifold &... -
Page 69: Charging The Unit
These units should be charged using the superheat method. at the compressor inlet. Super heat charging data is shown in Tables 71 thru 79. TABLE 71: DL-06 (6.5 TON) STANDARD EFFICIENCY SUPERHEAT CHARGING Superheat at Compressor Suction (°F) Airflow = 2500 CFM Outdoor Temp (°F) -
Page 70: 8.5 Ton) Standard Efficiency Superheat Charging
167791-BIM-B-0606 TABLE 73: DL-08 (8.5 TON) STANDARD EFFICIENCY SUPERHEAT CHARGING Superheat at Compressor Suction (°F) Airflow = 3400 CFM Outdoor Temp (°F) Indoor WB Temp (°F) 17.0 19.1 21.2 23.3 25.4 27.5 29.6 31.4 33.1 34.9 36.6 14.6 16.6 18.6 20.6 22.6 24.6... -
Page 71: 12.5 Ton) Standard Efficiency Superheat Charging
167791-BIM-B-0606 TABLE 75: DL-12 (12.5 TON) STANDARD EFFICIENCY SUPERHEAT CHARGING Superheat at Compressor Suction (°F) Airflow = 5000 CFM Outdoor Temp (°F) Indoor WB Temp (°F) 33.9 34.5 35.1 35.7 36.3 36.9 37.5 38.1 38.7 39.3 39.9 30.2 31.0 31.8 32.7 33.5 34.3... -
Page 72: 7.5 Ton) High Efficiency Superheat Charging
167791-BIM-B-0606 TABLE 77: DU-07 (7.5 TON) HIGH EFFICIENCY SUPERHEAT CHARGING Superheat at Compressor Suction (°F) Airflow = 3000 CFM Outdoor Temp (°F) Indoor WB Temp (°F) 37.1 37.6 38.1 38.5 39.0 39.4 39.9 40.0 40.1 40.2 40.3 32.1 32.8 33.4 34.1 34.8 35.5... -
Page 73: Troubleshooting
167791-BIM-B-0606 TROUBLESHOOTING DL/DU FLASH CODES Various flash codes are utilized by the unit control board (UCB) to aid in troubleshooting. Flash codes are distinguished by the short on and off cycle used (approximately 200ms on and 200ms off). To show normal Troubleshooting of components may require open- operation, the control board flashes a 1 second on, 1 second ing the electrical control box with the power con-... -
Page 74: Unit Control Board
167791-BIM-B-0606 TABLE 81: IGNITION CONTROL FLASH CODES FLASHES FAULT CONDITIONS CHECK STEADY ON Control Failure Control HEARTBEAT Normal Operation Not Applicable Pressure Switch Pressure Switch Stuck Closed Pressure Switch Failed Venter Pressure Switch To Close Vent Blocked Main Limit Limit Switch Open AUX Limit Flame Present With Gas Off First Stage Gas Valve... -
Page 75: Basic Troubleshooting Flowchart
167791-BIM-B-0606 Monitored Loss of Call for Heat Off Systems Programming? Call for Heating? Problem? Heating? Program Call for 2nd Unit Call for Trip/Failure Stage Control Heat Cooling Board Energize ID Call for First Monitor Blower Motor Cooling? Stage? Call for 1st Turn off ID Fan on Fan off... -
Page 76: Trip Failure Flow Chart
167791-BIM-B-0606 L o s s o f F r e e z e s t a t T r i p / F a i l u r e S w i t c h S w i t c h O p e n L S I n p u t O p e n ? O p e n... -
Page 77: Cooling Troubleshooting Guide
167791-BIM-B-0606 COOLING TROUBLESHOOTING GUIDE On calls for cooling, the supply air blower motor is operating but compressor #1 is not (the room thermostat fan switch is in the “AUTO” position): On calls for cooling, if the compressors are operating but the supply air blower motor does not energize after a short delay If installed, check the position of the economizer blades. - Page 78 167791-BIM-B-0606 locked out the compressor for repeat trips. The UCB For units without factory installed or with field installed should be flashing an alarm code. If not, press and economizers, the UCB allows compressor operation all release the ALARMS button on the UCB. The UCB will the time.
- Page 79 167791-BIM-B-0606 If 24 volts is present at the UCB Y2 terminal, the com- Check for line voltage at the compressor contactor, M1, pressor may be out due to an open high-pressure switch, and that the contactor is pulled in. Check for loose wiring low-pressure switch, or freezestat.
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Page 80: Gas Heat Troubleshooting Guide
167791-BIM-B-0606 11. If 24 volts is present at the UCB Y1 terminal and the compressor is not out due to a protective switch trip, repeat trip lock out, or ASCD, the economizer terminals of the UCB may be improperly wired. Check for 24 volts The furnace may shut down on a high temperature at the Y1 “OUT”... - Page 81 167791-BIM-B-0606 If the blower motor runs with the fan switch in the “ON” the either pressure or rollout switch is not closed. Or the position but does not run shortly after the furnace has draft motor is not sufficiently evacuating the heat ignited when the fan switch is in the “AUTO”...
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- Page 84 Subject to change without notice. Printed in U.S.A. 167791-BIM-B-0606 Copyright © 2006 by Unitary Products Group. All rights reserved. Supersedes: 167791-BIM-A-1005 Unitary 5005 Norman Products York Group Drive 73069...