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FIGURE NO. 1

MOVING UNIT WITH FORK LIFT

NOTE: 

ALWAYS LIFT ON SIDE OPPOSITE THE

CONTROL PANEL TO AVOID DAMAGING
THE CONTROLS.

L O C A T I O N

Unit is designed for indoor application and must be

located in an area where the surrounding ambient tem-

peratures are 40F or above. A good rule of thumb is

to place units where ambients are at least 5 degrees
above the leaving water temperature.

Because of the electric control devices, the units

should not be exposed to the weather. A plastic cover
over the control box is supplied as temporary protec-

tion during transfer.

A reasonably level and sufficiently strong floor is

all that is required for the SEASONPAK water chiller.

If necessary, additional structural members should be

provided to transfer the weight of the unit to the near-

est beams. Refer to Page 4 for foundation information.

SPACE REQUIREMENTS FOR CONNECTIONS

AND SERVICING

The c h i I led water piping for all units enters and

leaves the cooler from the rear. A clearance of 3 to 4

feet should be provided for this piping and for replac-

ing the fi Iter-driers, for servicing the solenoid valves,
or for changing the compressors, should it ever be-

come necessary.

The condenser water piping enters and leaves the

shell from the ends. Work space must be provided in
case water regulating valves are being used and for
general servicing.

Clearance should be provided for removing cooler

tubes on one end of the unit as specified in Table 1.
Condenser tubes cannot be replaced. It is also desir-
able to leave a small walk area on the end opposite
that used for replacement of a cooler tube.

M I N I M U M   C L E A R A N C E   F O R   C O O L E R   T U B E   R E -

M O V A L   M E A S U R E D   F R O M   C E N T E R   L I N E   O F

C H I L L E D   W A T E R   C O N N E C T I O N   O N   E I T H E R   E N D

TABLE NO. 1 MINIMUM CLEARANCE

U N I T   S I Z E

I

M I N I M U M   C L E A R A N C E

007A THRU 015A 72”
020A THRU 041A 96”
050A THRU 070A 108”
080A

120”

FIGURE NO. 2

SUGGESTED RIGGING

OTE: ALWAYS USE SPREADER

BARS TO PROTECT UNIT

FROM DAMAGE.

P L A C I N G   T H E   U N I T

The small amount of vibration normally encountered
with the SEASONPAK water chiller makes this unit
particularly desirable for basement or ground floor in-
stallations where the unit can be bolted directly to

the floor. The floor construction should be such that
the unit wi II not affect the bui lding structure, or trans-

mit noise and vibration into the structure. See VI-
BRATION ISOLATORS section for additional mount-

ing information. Hold down bolt locations are indicated
in Figures 3 and 4, Page 4.

V I B R A T I O N   I S O L A T O R S

Rubber-in-shear or spring isolators can be furnished

and field placed under each corner of the package. It

is recommended that a rubber-in-shear pad be used as

the minimum isolation on all upper level installations
or areas in which vibration transmission is a consid-
eration.

Transfer the unit as indicated under MOVING THE

UNIT, or use the methods as indicated in Figures 1
and 2. In all cases, set the unit in place and level
with a spirit level. When spring type isolators are re-
quired, install springs running under the main side
channels. Foundation hold down bolt locations for vi-
bration isolators are given in Figures 3 & 4. A rubber-
anti -skid pad should be standard under isolators if
hold down bolts are not used.

Vibration eliminators in all water piping connected

to the SEASONPAK water chiller are recommended to
avoid straining the piping and transmitting vibration
and noise.

090A THRU 1OOA

1 OX” I

110A  T H R U   120A

132"

I

Page 3

Summary of Contents for Seasonpak PWA-008A

Page 1: ...BLE OF CONTENTS CONTROLS CHECKING 24 CROSSREFERENCE NEW TO OLD MO 2 ELECTRICAL 22 23 CONTROL CENTER SERVICE 26 27 ELECTRICALDATA 22 23 WIRING 10 13 WIRING DIAGRAMS 14 21 MAINTENANCE 26 29 MOVING PLACI...

Page 2: ...LL UNIT FROM ANYTHING OTHER THAN water cooled condensers Arrangement 1 is supplied THE BASE MOVING AND PLACING THE UNIT MOVING THE UNIT The McQUAY SEASONPAK water chiller is mounted on heavy wooden sk...

Page 3: ...EARANCE FOR COOLER TUBE RE MOVAL MEASURED FROM CENTER LINE OF CHILLED WATER CONNECTION ON EITHER END TABLE NO 1 MINIMUM CLEARANCE UNIT SIZE I MINIMUM CLEARANCE 007A THRU 015A 72 020A THRU 041A 96 050A...

Page 4: ......

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Page 6: ...nded beyond the pro FIGURE NO 7 TO COOI ER 4 posed insulation thickness to make them accessible CHILLED WATER THERMOSTAT WHR 008A thru 060A The chilled water thermostat is mounted inside the control c...

Page 7: ...oop at the outlet end is recommended See Figure 9 WATER REGULATING VALVES EACH CONDENSER FIGURE NO 8 3 WAY WATER REGULATING VALVES COi lNG TOWER PURGE 4 MAIN CONDENSER WATER SUPPLY FROM PUMP BY PASS B...

Page 8: ...cal discharge riser is too low considerable oil may collect in the riser and the horizontal header causing the compressor to lose its oil and resultant damage due to lack of lubrication Another danger...

Page 9: ...E NO 11 PURGE VALVE DISCHARGE LINE HECK VALVE LIQUID LINE FIGURE NO 13 DISCHARGE LINE I TO EVAPORATOR RECEIVER LrQuro LINE EVAPORATORS or and receiver The discharge line piping in this case is not too...

Page 10: ...TAT 12 INDICATOR LIGHTS 6 HIGH MANUAL RESET AND LOW PRESSURE CUTOUTS 7 CONTROL SYSTEM ON OFF SWITCH FIGURE NO 16 MODELS WHR 070A THRU 120A 1 FREEZESTAT MANUAL RESET 7 CONTROL SYSTEM ON OFF SWITCH 2 OI...

Page 11: ...020A THRU 060A FIGURE NO 17 TOP VIEW OF UNIT Models WHR OO8A thru 015A are single compressor units 3 4 5 6 7 8 9 10 25 The power from 25 is fed thru NC contacts to relay R3 and R4 to energizethe compr...

Page 12: ...e operating before power can be applied to start this system Note that the crankcase heaters will be energized regard less of water flow The flow switch is recommended and does not have the shortcomin...

Page 13: ...itch LP1 opens Contactors Ml M3 and relay R3 will open and compressor 1A will turn off and stay off until relay R1 is again energized thru the thermostat In the event compressor 1A is off on oil press...

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Page 24: ...aches the prescribed differential within 120 seconds the thermal time delay is de energized and the control circuit remains closed If during the operation the oil pressure differential falls below 10...

Page 25: ...d unloading sequence of the unit based on a full load cooling range of 10F It should be realized however that there will be a fluctuation in the leaving water temperature as the unit cycles unloads an...

Page 26: ...eaning of the finned surface of the conden ser coil Cleaning may be accomplished by using a cold water spray brushing vacuuming or high pres sure air No tools should be used that could damage the coil...

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Page 28: ...s t e m c P u r g e t h e n o n c o n d e n s i b l e s d S y s t e m o v e r c h a r g e d w i t h r e f r i g e r a n t d R e m o v e e x c e s s e D i s c h a r g e s h u t o f f v a l v e p a r t...

Page 29: ...n d t i g h t e n s y s t e m k R e p l a c e g a s k e t I Adjust t h e r m a l e x p a n s i o n v a l v e C o m p r e s s o r l o s e s o i l _ _ _ a L a c k o f r e f r i g e r a n t a C h e c k f...

Page 30: ...ber and serial number of the date of installation of the unit and date of failure along with an explanation of the malfunctions and a the unit as stamped on the serial plate attached to the unit If re...

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