Contents
Installation, Start-Upand Service Instructions
TABLE OF CONTENTS
SAFETY CONSIDERATIONS
Packaged Air-HandlingUnits 60 Hz
UNIT OPERATION AND SAFETY HAZARD
PRE-INSTALLATION
INSTALLATION
ELECTRICAL SHOCK HAZARD
UNIT
Fig. 2A - Dimensions - Size
UNIT WEIGHT
40RUA*25
UNIT
Fig. 2B - Dimensions - Sizes 28 and
UNIT WEIGHT
40RUA*28
UNIT 40RUA
UNIT 40RUA
UNIT 40RUS
UNIT 40RUS
Unit Positioning - The unit can be mounted on the floor for vertical application with return air entering the face of the unit and supply air discharging vertically through the top of the unit. The unit can also be applied in a horizontal arrangement with return air entering horizontally and the supply air discharging horizontally. When applying the unit in a horizontal arrangement, ensure the condensate drain pan is located at the bottom center of the unit for adequate condensate disposal. See Fig. 5 for condensate connections for each unit position
UNIT SIZES
OVERHEAD SUSPENSION ACCESSORY UNIT SIZE
NOTE Dimensions in are millimeters
Fig. 6 - Preferred Suspension Technique
Unit Isolation - Where extremely quiet operation is essential, install isolators between floor and base of unit, or between ceiling and top section of unit
Fig. 10 - TXV Sensing Bulb Location
VERTICAL INSTALLATION
HORIZONTAL INSTALLATION
Fig. 9 - Typical Evaporator Coil Connections 40RU
Table 3 - Fitting Requirements
Table 3 - Fitting Requirement cont
Chillled Water Piping - See Tables 1C and 1D for chilled water connecton sizes. For ease in bazing, it it recom- mended that all internal solder joints be made before unit is placed in final position
1 - fan motor 1 - adjustable motor pulley
FIRE HAZARD
ELECTRICAL SHOCK HAZARD
Table 4 - Electrical Data, Standard Motors
Legend and Notes For Tables 4 and
Table 5 - Electrical Data, Alternate Motors
Fig. 17 - Unit Wiring
UNIT OPERATION HAZARD
removal for
START-UP
SERVICE
ELECTRICAL SHOCK HAZARD
Fan Belts - Motor mounting plate and motor support angles are slotted to permit both vertical and horizontal adjustment. Adjust belts for correct deflection by loosening motor plate mounting bolts, moving motor/plate assembly forward or back, and retightening bolts. Press down on belt with one finger midway between fan and motor pulleys to check deflection. The correct deflection is 1/8-in.3.2 mm. See Fig
Fan Pulley Alignment - Align as follows
UNIT OPERATION HAZARD
1. Remove the side access panel retain screws
UNIT OPERATION HAZARD
UNIT
Table 8C - Fan Motor Data, Standard Motor - SI
Table 8D - Fan Motor Data, Alternate Motor - SI
Table 9A - Standard Drive Data, 60 Hz - English
Table 9C - High-StaticDrive Data, 60 Hz - English
Table 9D - Standard Drive Data, 60 Hz - SI
Table 9E - Medium-StaticDrive Data, 60 Hz - SI
Table 9F - High-StaticDrive Data, 60 Hz - SI
Table 10A - 40RU Standard Fan Performance Data
0.0-2.4in. wg External Static Pressure - English
Table 10B - 40RU Standard Fan Performance Data
Table 10B — 40RU Standard Fan Performance Data —
0-600kPa External Static Pressure - SI
0-600kPa External Static Pressure - SI cont
0.0-2.4in. wg External Static Pressure - English
0-600kPa External Static Pressure - SI
0-600kPa External Static Pressure - SI cont
Legend and Notes for Tables 10B and 10D
Legend and Notes for Tables 10A and 10C
FACTORY-SUPPLIEDPRESSURE DROP - ENGLISH
FACTORY-SUPPLIEDPRESSURE DROP - SI
START-UPCHECKLIST SPLIT SYSTEMS WITH 40RU UNITS
I. PRELIMINARY INFORMATION
II. PRE-START-UP
OUTDOOR UNIT
III. START-UP
CHECK VOLTAGE IMBALANCE
