York K5EU090A50A - Manuals - manualsarea.com

Page 2 - TABLE OF CONTENTS; INSTALLATION; FIGURES; Description; PRODUCT NOMENCLATURE

2 Unitary Products Group 550.39-N4YI TABLE OF CONTENTS General................................................................................1 Reference ............................................................................1 Inspection ............................................................

Page 3 - and drain connections.; TABLE 1; - UNIT APPLICATION DATA

carrier's agent should be made in writing. See Local Dis-tributor for additional information. LIMITATIONS These units must be installed in accordance with applicable na-tional, local and municipal safety codes. If components are to be added to a unit to meet local codes,they are to be installed at t...

Page 4 - CAUTION: Spreader bars should be used to prevent slings; VERTICAL/HORIZONTAL INSTALLATION; NOTE: If return air duct is not used, applicable lnstalltion; - VERTICAL AND HORIZONTAL APPLICATION

CLEARANCES The clearances listed on the unit dimension drawing(Figure 9) are required for the proper service and opera-tion of the unit. RIGGING AND HANDLING Be careful when moving the unit. Do not remove anypackaging until the unit is near its final location. The packaging consists of a bottom wood...

Page 5 - REFRIGERANT MAINS; Do not use soft solder.; INSTALLING REFRIGERANT MAINS

REFRIGERANT MAINS Many service problems can be avoided by taking adequate pre-cautions to provide an internally clean and dry system, and by us-ing procedures and materials that conform with establishedstandards. Hard drawn copper tubing should be used where no apprecia-ble amount of bending around ...

Page 6 - NOTE: These units can only be piped from one side of; EXPANSION VALVE BULB; The drain line; MUST; be trapped because the coil is lo-; NOTE: Refer to Figure 9 for minimum clearance require-; SUPPLY AIR BLOWER ADJUSTMENT; NOTE: The tubes must be inserted and held in a position per-; - RECOMMENDED DRAIN PIPING

Before brazing the refrigerant lines to these connections,remove the short panel from the unit frame and slide it(along with the grommets) onto the refrigerant lines. Af-ter the brazed joints have cooled, slide the panel backinto place and secure it to the unit frame. NOTE: These units can only be p...

Page 7 - TABLE 3; - SUPPLY AIR BLOWER MOTOR PULLEY; - TYPICAL MOTOR MOUNTING ASSEMBLY; ORE TAKING ANY TEST MEASUREMENTS TO AS-

3. Using an inclined manometer, determine the pressure drop across a dry evaporator coil. Since the moisture on anevaporator coil may vary greatly, measuring the pressuredrop across a wet coil under field conditions would be inac-curate. To assure a dry coil, the refrigerant system shouldbe de-energ...

Page 8 - KEU120- SUPPLY AIR BLOWER PERFORMANCE; TABLE 4

8 Unitary Products Group 550.39-N4YI KEU090 - SUPPLY AIR BLOWER PERFORMANCE 1 - (CFM) BLOWER SPEED RPM AIRFLOW ESP 2 (IWG) OUTPUT (BHP) INPUT (kW) ESP 2 (IWG) OUTPUT (BHP) INPUT (KW) ESP2 (IWG) OUTPUT (BHP) INPUT (kW) ESP 2 (IWG) OUTPUT (BHP) INPUT (kW) ESP 2 (IWG) OUTPUT (BHP) INPUT (kW 2400 CFM 27...

Page 9 - TABLE 5; TABLE 6

Unitary Products Group 9 550.39-N4YI TABLE 5 - ACCESSORY STATIC RESISTANCE (IWG) ACCESSORY EXTERNAL STATIC PRESSURE DROP RESISTANCE IWG/pA BLOWER CFM/m 3 /s 2400 / 1.1 2700 / 1.3 3000 / 1.4 3300 / 1.6 3600 / 1.7 Electric Heat 10k W 0.01 / 2.5 0.01 / 2.5 0.01/ 2.5 0.02 / 5.0 0.02/ 5.0 16 kW 0.01 / 2....

Page 10 - - UNIT DIMENSIONS AND CLEARANCES

10 Unitary Products Group 550.39-N4YI FIG 9 - UNIT DIMENSIONS AND CLEARANCES Overall dimension of the unit will vary if an electric heater, a supply air plenum or a base is used. This dimension is required for removal of the DX coil. Only 26" isrequired for normal servicing. ! If the DX coil has...

Page 11 - POWER AND CONTROL WIRING; Remove the 1; TABLE 7; - BLOWER MOTOR AND DRIVE DATA; CONTROL WIRING; Route the low voltage control wiring through the

Unitary Products Group 11 550.39-N4YI MOTOR SPECIFICA- TIONS •1450 RPM •380/415-3-50 •Solid base •56 Frame •Inherently protected Permanently lubricated ball bearings POWER AND CONTROL WIRING Install electrical wiring in accordance with applicable national,local and municipal codes. The unit should b...

Page 12 - MAINTENANCE; FILTERS; — The filters must be replaced as often as necessary; EVAPORATOR COIL; — Do not allow dirt to accumulate on the; LUBRICATION; — The bearings for the blower shaft and; DRAIN PAN; — The drain pan should be inspected regu-; BELTS; — Maintain belt tension to extend belt life. Re-

Unitary Products GroupP.O. Box 1592, York, Pennsylvania USA 17405-1592Subject to change without notice. Printed in U.S.ACopyright © by York International Corporation 1994. All Rights Reserved. 550.39-N4YI MAINTENANCE FILTERS — The filters must be replaced as often as necessary to assure good air flo...