McQuay PFS 155C Installation Manual

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Installation Manual

Water-Cooled Dual Compressor Screw Chiller

Installation Manual PFS 155C through PFS 210C, R-22 PFS 235C through PFS 315C, R-410A 60 Hertz

IM 692-1

Group: Chiller Part Number: 629955 Effective: May 1997

Supersedes: IM663-1

IM683 IM692

Table of Contents

Introduction........................................................................................................... 3

Receiving and Handling...............................................................................................................3

Installation ............................................................................................................. 4

Location and Mounting................................................................................................................4

Compressor Condensation............................................................................................................4

Vibration Isolators .......................................................................................................................4

Evaporator and Condenser Water Piping ......................................................................................7

Water treatment ...........................................................................................................................7

Head pressure control, tower system.............................................................................................7

Head pressure control, well water system .....................................................................................8

Relief Valve Piping ......................................................................................................................8

Temperature and Water Flow Limitations.....................................................................................9

Evaporator Freeze Protection .......................................................................................................9

Condenser Protection and Design Considerations.........................................................................9

Chilled Water Thermostat............................................................................................................ 9

Refrigerant Charge ......................................................................................................................9

Detection of Loss of Flow...........................................................................................................10

Glycol Solutions.........................................................................................................................10

Evaporator and Condenser Water Flow and Pressure Drop..............................12

Physical Data........................................................................................................27

Dimensional Data.................................................................................................30

Field Wiring.........................................................................................................44

General Information ..................................................................................................................44

Pre-Start-up .........................................................................................................51

Sequence of Operation .........................................................................................51

Initial Conditions .......................................................................................................................51

Off Conditions...........................................................................................................................52

Alarm........................................................................................................................................52

Initial Start-up...........................................................................................................................52

Load Recycle .............................................................................................................................53

2 PFS 155C - 315C IM 692-1

Introduction

McQuay StarGate™ water-cooled chillers are completely assembled, factory wired, evacuated, charged, tested and ready for installation. Each unit consists of a water-cooled condenser with integral subcooler, twin accessible semi-hermetic single screw compressors, replaceable tube shelland-tube evaporator, and complete refrigerant piping. Liquid line components included are manual liquid line shutoff valves, charging valves, filter-dryers, liquid line solenoid valves, sightglass/moisture indicators, and electronic expansion valves. Other features include compressor heaters, and an advanced fully integrated microprocessor control system.

automatic operation, (the high and low pressure controls are external from the electrical control center). Compressors are protected by solid-state overload protection and over temperature protection. Field installed fused disconnect switch (furnished by others) offers additional protection.

Receiving and Handling

Inspect the unit immediately after receipt for possible damage. The unit is shipped FOB factory and all claims for handling and shipping damage are the responsibility of the consignee. Leave the shipping skid in place until the unit is in final position. This will aid in handling the equipment. Use extreme care when rigging the equipment to prevent damage to the control center, or refrigerant piping. See Dimensional Data for the center of gravity of the unit.

rigging eyes are located (see Figure 1). Use spreader bars between the rigging lines to prevent damage to the control center.

The electrical control center includes all safety and operating controls necessary for dependable

Lift the unit by fastening the rigging hooks to the four corners of the evaporator where the

Figure 1, Rigging Eyes

Rigging Eyes

IM 692-1 PFS 155C - 315C 3

Installation

CAUTION

Installation must be performed by qualified personnel who are familiar with local codes, regulations, and experienced with this type of equipment

Start-up by McQuayService is included on all units sold for installation within North America excluding Mexico. Two weeks prior notification of start-up is required. The contractor should obtain a copy of the Start-up Scheduled Request Form from the sales representative or from the nearest McQuayService office.

Location and Mounting

Mount the unit on level concrete or steel base. Service clearance (at either end of the unit) is 12 feet for units with 10 feet long shells, 14 feet for units with 12-feet long shells and 16 feet for units with 14 feet long shells. Evaporator and condenser tubes are rolled into the tube sheets to permit replacement. Clearance at all other points, including the top, is 3 feet.

Make certain the floor or structural support is adequate to support the full operating weight of the complete unit. Optional rubber-in-shear pads, or spring isolators can be ordered for use under each corner of the base members. It is not necessary to bolt the unit to the mounting slab or frame work; although mounting holes are provided in the unit support at the four corners.

Compressor Condensation

Condensation occurs on the compressor surface when the temperature of the compressor surface is lower than the ambient dew point temperature. Drain pans with drain connections are provided underneath each compressor to collect the condensate. The compressor motor housing extends past the drain pans. Install a floor drain close to the unit to collect condensate from motor housing and condensate pans.

Vibration Isolators

Optional vibration isolator pads are shipped with the unit for field installation. These pads provide minimal isolation. Vibration isolators are recommended on all upper level installations where vibration transmission is a consideration. When vibration isolators are used, install springs under the main unit supports. Adjust spring so the upper housing clears lower housing by at least 1/4” (6mm) and not more than 1/2” (1 3mm). If hold-down bolts are not used, install a rubber anti-skid under isolators. Install vibration eliminators in water piping to reduce piping strain, vibration, and noise. Table 1 lists spring and rubber-in-shear isolators for all PFS unit sizes.

4 PFS 155C - 315C IM 692-1

Table 1, Vibration Isolators (PFS150B - 215B)

Isolator Isolator Per Location

1 2 3 4

Rubber-in-Shear

Spring

RP-4 RP-4 RP-4 RP-4

CP-4-28 CP-4-28 CP-4-28 CP-4-28

Figure 2, Isolator location

Table 2, Isolators (PFS150B - 215B)

Color Recom.

Isolator Type Of McQuay Max Ld

Stripe Part No. Lb. (Kg)

Rubber-In-

Shear

Spring CP-4-28 Green 0058051328 3600 (1633)

Note: The spring is fully compressed at about 5400 lb (2449 Kg).

RP-4 Green 0021639803 3300 (1497)

Figure 3 and Figure 4 give dimensions required to secure each McQuay isolator section to the mounting surface. The maximum loads for each unit are shown in Table 3.

Figure 3 , Rubber-in-Shear Isolator

IM 692-1 PFS 155C - 315C 5

Figure 4,Spring Flex Isolator

Table 3, Weights for Standard Shell Units

Unit U X V W

155-210

Short Shell

235-315

Short Shell

155-210

Standard Shell

235-315

Standard Shell

155-190

Long Shell

200,210

Long Shell

235-315

Long Shell

2007 2412 2213 2660 2292 2841 2498 3095 2105 2475 2477 2913 2564 3060 2935 3501 3236 3107 3819 3667 2988 3182 3339 3556 3153 3468 3480 3827

Figure 5, Corner Weight Locations

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Evaporator and Condenser Water Piping

PFS evaporators and condensers are equipped with either victaulic or flange connections. The installing contractor must provide matching connections.

CAUTION

Remove the solid-state temperature sensor and thermostat bulbs from the wells to prevent damage to those components when welding on the victaulic or flange connections.

Connect the condenser with the inlet water entering at the bottom to maximize subcooling. The

condenser water will discharge from the top connection.

Support piping to reduce weight and strain on the fittings and connections. Be sure piping is adequately insulated. Install a cleanable 20-mesh water strainer in evaporator and condenser water piping. Install enough shutoff valves to permit draining water from the evaporator or condenser without draining the complete system.

CAUTION

Freeze Notice: The evaporator and condenser are not self-draining. Both must be blown out.

Include thermometers at the inlet and outlet connections and air vents at the high points of piping. The water heads can be interchanged (end for end) allowing water connections to be made at either end of the unit. Use new head gaskets when interchanging water heads. When water pump noise is objectionable, use rubber isolation sections at both the inlet and outlet of the pump. Vibration eliminator sections in the condenser inlet and outlet water lines are not normally required. Where noise and vibration are critical, and unit is mounted on spring isolators, flexible piping connections are necessary.

Water treatment

If unit is operating with a cooling tower, clean and flush cooling tower. Make sure tower "blowdown" or bleedoff is operating. Atmospheric air contains many contaminants which increases the need for water treatment. The use of untreated water may result in corrosion, erosion, sliming, scaling, or algae formation. A water treatment service is recommended. McQuay International is not responsible for damage or faulty operation from untreated or improperly treated water.

Head pressure control, tower system

The minimum entering water temperature to the condenser must not be lower than 70°F (21.1°C) at full tower water flow. If lower temperature water is used, the flow must be reduced proportionally. Use a three-way bypass valve around the tower to modulate the condenser water flow. Figure 6 shows a three-way pressure actuator water regulating valve used for cooling applications. This regulating valve will assure an adequate condensing pressure if the inlet condenser water temperature falls below 70°F). An optional AOX-4 board located in the MicroTech panel will control a cooling tower bypass valve or a varible speed condenser pump.

IM 692-1 PFS 155C - 315C 7

Head Pressure Control, Well Water System

When using city or well water for condensing refrigerant, install a normally closed direct acting water regulating valve in the outlet piping of the condenser. This regulating valve will assure an adequate condensing pressure if the inlet condenser water temperature falls below 70°F. The condenser service valve provides a pressure tap for the regulating valve. The valve can modulate in response to head pressure. On shutdown, the valve closes, preventing water from siphoning out of the condenser. Siphoning causes condenser waterside drying and accelerates fouling. If a valve is not used, Figure 7 illustrates the recommendation of a loop at the outlet. Size the loop height (H) to offset the negative pressure caused by the siphoning effect. A vacuum breaker may be required.

Figure 6, Bypass valve

Figure 7, Well Water System

Relief Valve Piping

Follow the requirements of ANSI/ASHRAE Standard 15-1994 for relief valve piping. The condenser relief valve assembly consists of a tree valve and two relief valves. The tree valve must be fully front or back seated to ensure only one relief valve is available for discharge.

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Temperature and Water Flow Limitations

PFS units are designed to operate in conditions from 20°F (-6.7°C) to 50°F (10°C) leaving water temperature on the evaporator side and 70°F (21.1°C) to 95°F (35°C) entering water temperature on the condenser side.

Glycol in the evaporator is required on all applications below 40°F (4.4°C) leaving evaporator fluid temperature. The maximum allowable water temperature to the cooler in a non-operating cycle is 105°F (40.6°C). The non-operating leaving condenser water temperature maximum is 115°F (46.1°C). Flow rates below the minimum values shown in the evaporator and condenser pressure drop curves may cause freeze-up problems, scaling and poor control. Flow rates above the maximum values shown in the evaporator and condenser pressure drop curves will result in unacceptable pressure drops, excessive nozzle and tube erosion and possibly cause tube failure.

Evaporator Freeze Protection

When freeze protection is a concern, do the following:

1. If the unit will not be operated during the winter, drain and flush the evaporator and chilled

water piping with glycol . Drain and vent connections are provided on the evaporator.

2. When using a cooling tower, add glycol solution to the chilled water system. Freeze point

should be approximately 10°F (5.6°C) below minimum design ambient temperature.

Note: Freeze damage is not considered a warranty failure and is not the responsibility of McQuay International.

3. Insulate field water piping, especially on the chilled water side.

Condenser Protection and Design Considerations

If pond or river water is used as a condensing medium and the water valves leak, the condenser and liquid line refrigerant temperature could drop below the equipment room temperature on the "off" cycle. This problem occurs when cold water continues to circulate through the condenser and the unit remains off due to satisfied cooling load. If this occurs:

1. Cycle the condenser pump off with the unit.

2. Verify the liquid line solenoid valves are operating properly.

Chilled Water Thermostat

The PFS water-cooled chiller is equipped with the MicroTech leaving water controller. Be careful when working around the unit to avoid damaging lead wires and sensor cables. Check lead wires before running the unit. Avoid rubbing the lead wires on the frame or other components. Verify the lead wires are firmly anchored. If the sensor is removed from the well for servicing, do not wipe off the heat conducting compound supplied in the well.

Refrigerant Charge

All units are designed for use with R-22 or R-410A and are shipped with a full operating charge. The operating charge for each unit is shown in the Physical Data Table.

IM 692-1 PFS 155C - 315C 9

Detection of Loss of Flow

NOTE: Water pressure differential switches are not recommended for outdoor applications.

The preferred means for detecting loss of flow is the use of factory-mounted pressure differential switches for the evaporator and condenser.

A flow switch is available from McQuay (part number 00175033-00). It is a “paddle” type switch and adaptable to any pipe size from 3” (76mm) to 8” (203mm) nominal. Two flow switches are required. Mount the flow switch in either the entering or leaving water line of the evaporator and condenser. Certain minimum flow rates are required to close the switch and are listed in Table

4. Installation should be as shown in Figure 8.

Figure 8, Flow Switch

Flow direction

marked on

switch

1" (25mm) NPT

Tee

Note: The procedure does not specify the type of glycol. Use the derate factors found in Table 5 for corrections when using ethylene glycol and those in Table 6 for propylene glycol.

5" (127mm)

Connect the normally open contacts of the flow switch in the unit control center at terminals 62 and 63. Flow switch contact must be suitable for 24 VAC, low current (16ma).

Table 4, Flow Switch Minimum Flow Rates

Nominal Pipe Size Min. Required Flow to

(inches) Activate Switch - GPM (L/s)

5 58.7 (3.7) 6 79.2 (5)

Glycol Solutions

CAUTION

Use industrial grade glycols only. Do not use an automotive grade antifreeze. Automotive antifreeze contains inhibitors that will cause plating on the copper tubes within the chiller evaporator. The type and handling of glycol used must be consistent with local codes.

To determine flow rate for the evaporator in GPM (L/s), and pressure drop through the cooler, use the following formulas and tables.

1. Capacity - Multiply the chiller's capacity with water by the capacity correction factor (Cap) to

find the chiller's capacity with glycol.

2. GPM - To determine evaporator GPM (or Delta-T) knowing Delta-T (or GPM) and tons:

24 ×

tons glycol

Glycol GPM = (from table)

( )

−

Delta T

flow

10 PFS 155C - 315C IM 692-1

For metric applications: L/s - To determine evaporator L/s (or Delta-T) knowing Delta-T (or L/s) and kW:

Glycol L / s = (from table)

Delta T

418. × −

flow

3. Pressure Drop - To determine pressure drop through the cooler when using glycol, enter the appropriate water pressure drop curve (begin on page 12 at the actual glycol flow. Multiply the water pressure drop found there by pressure drop adjustment factor (PD) to obtain corrected glycol pressure drop.

4. To determine the unit power consumption, multiply the unit kW/TR with water by the (kW/TR) factor. Test coolant with a clean, accurate glycol solution hydrometer (similar to that found in service stations) to determine the freezing point. Obtain percent glycol from the freezing point table below. A minimum of 25% solution by weight should be used for protection against corrosion.

Note: The effect of glycol in the condenser is negligible. As glycol increases in temperature, its properties approach those of water. For selection purposes, there is no derate in capacity for glycol in the condenser.

Table 5, Adjustment factors for ethylene glycol

% Freeze Point

E.G. °F °C CAP. kW/TR COP Flow PD

10 26 -3 0.991 1.005 0.995 1.013 1.070 20 18 -8 0.982 1.010 0.990 1.040 1.129 30 7 -14 0.972 1.014 0.986 1.074 1.181 40 -7 -22 0.961 1.016 0.984 1.121 1.263 50 -28 -33 0.946 1.021 0.979 1.178 1.308

Table 6, Adjustment factors for propylene glycol

% Freeze Point

P.G. °F °C CAP. kW/TR COP Flow PD

10 26 -3 0.987 1.005 0.995 1.010 1.068 20 19 -7 0.975 1.010 0.990 1.028 1.147 30 9 -13 0.962 1.017 0.983 1.050 1.248 40 -5 -21 0.946 1.026 0.975 1.078 1.366 50 -27 -33 0.929 1.039 0.962 1.116 1.481

Application Considerations

The chilled water loop must contain an adequate volume of water to prevent short cycling the chiller. Minimum water volume can be determined using the following formula:

Design GPM X 15 Minutes

Number of Compressors

Volume of Water=

IM 692-1 PFS 155C - 315C 11

Evaporator and Condenser Water Flow and Pressure Drop

Flow rates must fall between the minimum and maximum values shown on the appropriate evaporator and condenser curves. Flow rates below the minimum values shown will result in laminar flow that will reduce efficiency, cause erratic operation of the electronic expansion valve and could cause low temperature cutouts. Flow rates exceeding the maximum values shown can cause erosion on the evaporator water connections and tubes.

Measure the chilled water pressure drop through the evaporator at field installed pressure taps. It is important not to include the effect of valves or strainers in these readings.

Do not vary the water flow through the evaporator while the compressor(s) are operating. MicroTech control setpoints are based on constant flow.

Figure 9 , Evaporator 2-pass (short shell)

12 PFS 155C - 315C IM 692-1

Figure 10, Evaporator 3-Pass (Short Shell)

IM 692-1 PFS 155C - 315C 13

Figure 11, Condenser 1-Pass (Short Shell)

14 PFS 155C - 315C IM 692-1

Figure 12, Condenser 2-Pass (Short Shell)

IM 692-1 PFS 155C - 315C 15

Figure 13, Condenser 3-Pass (Short Shell)

16 PFS 155C - 315C IM 692-1

Figure 14, Evaporator 2-Pass (Standard Shell)

IM 692-1 PFS 155C - 315C 17

Figure 15, Evaporator 3-Pass (Standard Shell)

18 PFS 155C - 315C IM 692-1

Figure 16, Condenser 1-Pass (Standard Shell)

IM 692-1 PFS 155C - 315C 19

Figure 17, Condenser 2-Pass (Standard Shell)

20 PFS 155C - 315C IM 692-1

Figure 18, Condenser 3-Pass (Standard Shell)

IM 692-1 PFS 155C - 315C 21

Figure 19, Evaporator 2-Pass (Long Shell)

22 PFS 155C - 315C IM 692-1

Figure 20, Evaporator 3-Pass (Long Shell)

IM 692-1 PFS 155C - 315C 23

Figure 21, Condenser 1-Pass (Long Shell)

24 PFS 155C - 315C IM 692-1

Figure 22,Condenser 2-Pass (Long Shell)

IM 692-1 PFS 155C - 315C 25

Figure 23, Condenser 3-Pass (Long Shell)

26 PFS 155C - 315C IM 692-1

Physical Data

Table 7, Physical Data, PFS 155C - PFS 210C

BASIC DATA SHORT SHELL

Unit Capacity @ ARI Conditions,

Unit Operating Charge R-22, lb. (kg) 582 (264) 589 (267) 589 (267) 589 (267) 607 (276) 607 (276)

Min Pumpdown Capacity R-22, lb.

STANDARD SHELL

Unit Capacity @ ARI Conditions,

Unit Operating Charge R-22, lb. (kg) 661 (300) 653 (296) 653 (296) 653 (296) 653 (296) 653 (296)

Min Pumpdown Capacity R-22, lb.

LONG SHELL

Unit Capacity @ ARI Conditions,

Unit Operating Charge R-22, lb. (kg) 984 (447) 994 (451) 994 (451) 994 (451) 953 (433) 953 (433)

Min Pumpdown Capacity R-22, lb.

COMPRESSORS, SCREW, SEMI-HERMETIC

FLOODED EVAPORATOR - SHORT SHELL

Quantity, (Number of Water Passes) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2)

Shell Diameter -- Tube Length 18 - 10 18 - 10 18 - 10 18 - 10 18 - 10 18 - 10

in. (mm) ft. (mm) (457 - 3048) (457 - 3048) (457 - 3048) (457 - 3048) (457 - 3048) (457 - 3048)

Max. Water Pressure, psi (kPa) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035)

Max. Refrigerant Pressure, psi (kPa) 250 (1725) 250 (1725) 250 (1725) 250 (1725) 250 (1725) 250 (1725)

Water Connections (Victaulic),

CONDENSER - SHORT SHELL

Quantity, (Number of Water Passes) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2)

Shell Diameter -- Tube Length 18 - 10 18 - 10 18 - 10 18 - 10 18 - 10 18 - 10

in. (mm) ft. (mm) (457 - 3048) (457 - 3048) (457 - 3048) (457 - 3048) (457 - 3048) (457 - 3048)

Max. Water Pressure, psi (kPa) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035)

Max. Refrigerant Pressure, psi (kPa) 300 (2070) 300 (2070) 300 (2070) 300 (2070) 300 (2070) 300 (2070)

Water Connections (Victaulic),

Data 155C 170C 180C 190C 200C 210C

tons (kW)

(kg)

Cabinet Dimensions 139.75 x 42.0 x 76.88 139.75 x 42.0 x 76.88 139.75 x 42.0 x 76.88 139.75 x 42.0 x 76.88 139.75 x 42.0 x 76.88 139.75 x 42.0 x 76.88

L x W x H, in. (mm) 3550 x 1067 x 1953 3550 x 1067 x 1953 3550 x 1067 x 1953 3550 x 1067 x 1953 3550 x 1067 x 1953 3550 x 1067 x 1953

Operating Weight (with

starters),lb.(kg)

Shipping Weight, (with

starters),lb.(kg)

tons (kW)

(kg)

Cabinet Dimensions 162.75 x 42 x 76.88 162.75 x 42 x 76.88 162.75 x 42 x 76.88 162.75 x 42 x 76.88 162.75 x 42 x 76.88 162.75 x 42 x 76.88

L x W x H, in. (mm) 4134 x 1067 x 1953 4134 x 1067 x 1953 4134 x 1067 x 1953 4134 x 1067 x 1953 4134 x 1067 x 1953 4134 x 1067 x 1953

Operating Weight (with

starters),lb.(kg)

Shipping Weight, (with

starters),lb.(kg)

tons (kW)

(kg)

Cabinet Dimensions 164.6 x 50.9 x 86 164.6 x 50.9 x 86 164.6 x 50.9 x 86 164.6 x 50.9 x 86 164.6 x 48.4 x 80.4 164.6 x 48.4 x 80.4

L x W x H, in. (mm) 4180 x 1292 x 2184 4180 x 1292 x 2184 4180 x 1292 x 2184 4180 x 1292 x 2184 4180 x 1229 x 2042 4180 x 1229 x 2042

Operating Weight (with

starters),lb.(kg)

Shipping Weight, (with

starters),lb.(kg)

Nominal Tons, (kW) 70 (250) 70 (250) 70 (250) 85 (300) 70 (250) 100 (350) 85 (300) 85 (300) 85 (300) 100 (350) 100 (350) 100 (350)

Water Volume, gallons (L) 37.4 (142) 37.4 (142) 37.4 (142) 37.4 (142) 33.2 (126) 33.2 (126)

in (mm)

Water Volume, gallons (L) 45.5 (173) 40.1 (152) 40.1 (152) 40.1 (152) 36.8(140) 36.8 (140)

in (mm)

151.4 (532) 165.1 (581) 174.7 (614) 179.7 (632) 183.4 (645) 192.0 (675)

689 (313) 739 (336) 739 (336) 739 (336) 770 (350) 770 (350)

9292 (4214) 9292 (4214) 9292 (4214) 9292 (4214) 9292 (4214) 9292 (4214) 8978 (4072) 8978 (4072) 8978 (4072) 8978 (4072) 8978 (4072) 8978 (4072)

154.0 (542) 171.0 (601) 181.3 (638) 186.6 (656) 196.5 (691) 206.4 (726)

882 (400) 822 (373) 822 (373) 822 (373) 822 (373) 822 (373)

9970 (4522) 9970 (4522) 9970 (4522) 9970 (4522) 9970 (4522) 9970 (4522) 9567 (4339) 9567 (4339) 9567 (4339) 9567 (4339) 9567 (4339) 9567 (4339)

162.0 (570) 179.5 (631) 190.9 (671) 197.0 (693) 208.0 (731) 219.2 (771)

1399 (635) 1478 (671) 1478 (671) 1478 (671) 1174 (533) 1174 (533)

13829 (6272) 13829 (6272) 13829 (6272) 13829 (6272) 13065 (5925) 13065 (5925) 12651 (5737) 12651 (5737) 12651 (5737) 12651 (5737) 12037 (5459) 12037 (5459)

6 (152) 6 (152) 6 (152) 6 (152) 6 (152) 6 (152)

PFS Unit Size

Table 7, Physical Data continued on next page.

IM 692-1 PFS 155C - 315C 27

Table 7, Physical Data, PFS 155C - PFS 210C (continued)

Data 155C 170C 180C 190C 200C 210C BASIC DATA FLOODED EVAPORATOR - STANDARD SHELL

Quantity, (Number of Water Passes) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2)

Shell Diameter – Tube Length 18 - 12 18 - 12 18 - 12 18 - 12 18 - 12 18 - 12

in. (mm) ft. (mm) (457 - 3658) (457 - 3658) (457 - 3658) (457 - 3658) (457 - 3658) (457 - 3658)

Water Volume, gallons (L) 42 (160) 42 (160) 42 (160) 42 (160) 42 (160) 36.9 (140)

Max. Water Pressure, psi (kPa) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035)

Max. Refrigerant Pressure, psi (kPa) 250 (1725) 250 (1725) 250 (1725) 250 (1725) 250 (1725) 250 (1725)

Water Connections (Victaulic), in

CONDENSER - STANDARD SHELL

Quantity, (Number of Water Passes) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2)

Shell Diameter -- Tube Length 18 - 12 18 - 12 18 - 12 18 - 12 18 - 12 18 - 12

in. (mm) ft. (mm) (457 - 3658) (457 - 3658) (457 - 3658) (457 - 3658) (457 - 3658) (457 - 3658)

Max. Water Pressure, psi (kPa) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035)

Max. Refrigerant Pressure, psi (kPa) 300 (2070) 300 (2070) 300 (2070) 300 (2070) 300 (2070) 300 (2070)

Water Connections (Victaulic), in

FLOODED EVAPORATOR - LONG SHELL

Quantity, (Number of Water Passes) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2)

Shell Diameter -- Tube Length 24 - 12 24 - 12 24 - 12 24 - 12 24 - 12 24 - 12

in. (mm) ft. (mm) (610 - 3658) (610 - 3658) (610 - 3658) (610 - 3658) (610 - 3658) (610 - 3658)

Max. Water Pressure, psi (kPa) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035)

Max. Refrigerant Pressure, psi (kPa) 250 (1725) 250 (1725) 250 (1725) 250 (1725) 250 (1725) 250 (1725)

Water Connections (Victaulic),

CONDENSER - LONG SHELL

Quantity, (Number of Water Passes) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2)

Shell Diameter -- Tube Length 24 - 12 24 - 12 24 - 12 24 - 12 22 - 12 22 - 12

in. (mm) ft. (mm) (610 - 3658) (610 - 3658) (610 - 3658) (610 - 3658) (559 - 3658) (559 - 3658)

Max. Water Pressure, psi (kPa) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035)

Max. Refrigerant Pressure, psi (kPa) 300 (2070) 300 (2070) 300 (2070) 300 (2070) 300 (2070) 300 (2070)

Water Connections (Victaulic),

(mm)

Water Volume, gallons (L) 45.2 (171) 51.6 (196) 51.6 (196) 51.6 (196) 51.6 (196) 45.2 (171)

(mm)

Water Volume, gallons (L) 81.8 (310) 81.8 (310) 81.8 (310) 81.8 (310) 81.8 (310) 81.8 (310)

in (mm)

Water Volume, gallons (L) 105.9 (401) 97.5 (369) 97.5 (369) 97.5 (369) 86.9 (329) 86.9 (329)

in (mm)

6 (152) 6 (152) 6 (152) 6 (152) 6 (152) 6 (152)

8 (204) 8 (204) 8 (204) 8 (204) 8 (204) 8 (204)

PFS Unit Size

Table 8, Physical Data, PFS 235C - PFS315C

BASIC DATA SHORT SHELL

Unit Capacity @ ARI Conditions,

Unit Operating Charge R-410A,

Min Pumpdown Capacity R-410A,

STANDARD SHELL

Unit Capacity @ ARI Conditions,

Unit Operating Charge R-410A,

Min Pumpdown Capacity R-410A,

Data 235C 255C 270C 280C 300C 315C

tons (kW)

lb. (kg) lb. (kg)

Cabinet Dimensions 140.75 x 43.9 x 84.25 140.75 x 43.9 x 84.25 140.75 x 43.9 x 84.25 140.75 x 43.9 x 84.25 140.75 x 43.9 x 84.25 140.75 x 43.9 x 84.25

L x W x H, in. (mm) 3575 x 1115 x 2140 3575 x 1115 x 2140 3575 x 1115 x 2140 3575 x 1115 x 2140 3575 x 1115 x 2140 3575 x 1115 x 2140

Operating Weight (with

starters),lb.(kg)

Shipping Weight, (with

starters),lb.(kg)

tons (kW)

lb. (kg) lb. (kg)

Cabinet Dimensions 163.75 x 43.9 x 84.25 163.75 x 43.9 x 84.25 163.75 x 43.9 x 84.25 163.75 x 43.9 x 84.25 163.75 x 43.9 x 84.25 163.75 x 43.9 x 84.25

L x W x H, in. (mm) 4159 x 1115 x 2140 4159 x 1115 x 2140 4159 x 1115 x 2140 4159 x 1115 x 2140 4159 x 1115 x 2140 4159 x 1115 x 2140

Operating Weight (with

starters),lb.(kg)

Shipping Weight, (with

starters),lb.(kg)

222.3 (782) 243.7 (857) 257.4 (905) 264.6 (930) 278.6 (980) 292.0 (1027) 772 (350) 772 (350) 772 (350) 772 (350) 772 (350) 772 (350) 793 (360) 793 (360) 793 (360) 793 (360) 793 (360) 793 (360)

10726 (4864) 10726 (4864) 10726 (4864) 10726 (4864) 10726 (4864) 10726 (4864) 10185 (4619) 10185 (4619) 10185 (4619) 10185 (4619) 10185 (4619) 10185 (4619)

233.0 (819) 256.0 (900) 270.9 (953) 280.1 (985) 296.2 (1041) 311.0 (1094) 857 (389) 862 (391) 862 (391) 857 (389) 851 (386) 851 (386) 915 (415) 946 (429) 946 (429) 915 (415) 876 (398) 876 (398)

12060 (5469) 12060 (5469) 12060 (5469) 12060 (5469) 12060 (5469) 12060 (5469) 11300 (5125) 11300 (5125) 11300 (5125) 11300 (5125) 11300 (5125) 11300 (5125)

PFS Unit Size

Table 8, Physical Data, PFS 235C - PFS315C continued on next page.

28 PFS 155C - 315C IM 692-1

Table 8, Physical Data, PFS 235C - 315C (continued)

LONG SHELL

Unit Capacity @ ARI Conditions,

Unit Operating Charge R-410A

Min Pumpdown Capacity R-410A,

COMPRESSORS, SCREW, SEMI-HERMETIC

FLOODED EVAPORATOR - SHORT SHELL

Quantity, (Number of Water Passes) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2)

Shell Diameter – Tube Length 22 - 10 22 - 10 22 - 10 22 - 10 22 - 10 22 - 10

in. (mm) ft. (mm) (559 - 3048) (559 - 3048) (559 - 3048) (559 - 3048) (559 - 3048) (559 - 3048)

Max. Water Pressure, psi (kPa) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035)

Max. Refrigerant Pressure, psi (kPa) 400 (2760) 400 (2760) 400 (2760) 400 (2760) 400 (2760) 400 (2760)

Water Connections (Victaulic),

CONDENSER - SHORT SHELL

Quantity, (Number of Water Passes) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2)

Shell Diameter – Tube Length 20 - 10 20 - 10 20 - 10 20 - 10 20 - 10 20 - 10

in. (mm) ft. (mm) (508 - 3048) (508 - 3048) (508 - 3048) (508 - 3048) (508 - 3048) (508 - 3048)

Max. Water Pressure, psi (kPa) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035)

Max. Refrigerant Pressure, psi (kPa) 475 (3278) 475 (3278) 475 (3278) 475 (3278) 475 (3278) 475 (3278)

Water Connections (Victaulic),

FLOODED EVAPORATOR - STANDARD SHELL

Quantity, (Number of Water Passes) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2)

Shell Diameter – Tube Length 22 - 12 22 - 12 22 - 12 22 - 12 22 - 12 22 - 12

in. (mm) ft. (mm) (559 - 3658) (559 - 3658) (559 - 3658) (559 - 3658) (559 - 3658) (559 - 3658)

Max. Water Pressure, psi (kPa) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035)

Max. Refrigerant Pressure, psi (kPa) 400 (2760) 400 (2760) 400 (2760) 400 (2760) 400 (2760) 400 (2760)

Water Connections (Victaulic), in

CONDENSER - STANDARD SHELL

Quantity, (Number of Water Passes) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2)

Shell Diameter -- Tube Length 20 - 12 20 - 12 20 - 12 20 - 12 20 - 12 20 - 12

in. (mm) ft. (mm) (508 - 3658) (508 - 3658) (508 - 3658) (508 - 3658) (508 - 3658) (508 - 3658)

Max. Water Pressure, psi (kPa) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035)

Max. Refrigerant Pressure, psi (kPa) 475 (3278) 475 (3278) 475 (3278) 475 (3278) 475 (3278) 475 (3278)

Water Connections (Victaulic), in

FLOODED EVAPORATOR - LONG SHELL

Quantity, (Number of Water Passes) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2)

Shell Diameter -- Tube Length 22 - 14 22 - 14 22 - 14 22 - 14 22 - 14 22 - 14

in. (mm) ft. (mm) (559 - 4267) (559 - 4267) (559 - 4267) (559 - 4267) (559 - 4267) (559 - 4267)

Max. Water Pressure, psi (kPa) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035)

Max. Refrigerant Pressure, psi (kPa) 400 (2760) 400 (2760) 400 (2760) 400 (2760) 400 (2760) 400 (2760)

Water Connections (Victaulic), in

CONDENSER - LONG SHELL

Quantity, (Number of Water Passes) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2)

Shell Diameter -- Tube Length 22 - 14 22 - 14 22 - 14 22 - 14 22 - 14 22 - 14

in. (mm) ft. (mm) (559 - 4267) (559 - 4267) (559 - 4267) (559 - 4267) (559 - 4267) (559 - 4267)

Max. Water Pressure, psi (kPa) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035) 150 (1035)

Max. Refrigerant Pressure, psi (kPa) 475 (3278) 475 (3278) 475 (3278) 475 (3278) 475 (3278) 475 (3278)

Water Connections (Victaulic),

Data 235C 255C 270C 280C 300C 315C

tons (kW)

lb. (kg) lb. (kg)

Cabinet Dimensions 188.75 x 43.9 x 84.25 188.75 x 43.9 x 84.25 188.75 x 43.9 x 84.25 188.75 x 43.9 x 84.25 188.75 x 43.9 x 84.25 188.75 x 43.9 x 84.25

L x W x H, in. (mm) 4794 x 1115 x 2140 4794 x 1115 x 2140 4794 x 1115 x 2140 4794 x 1115 x 2140 4794 x 1115 x 2140 4794 x 1115 x 2140

Operating Weight (with

starters),lb.(kg)

Shipping Weight, (with

starters),lb.(kg)

Nominal Tons, (kW) 105 (365) 105 (365) 105 (365) 125 (445) 105 (365) 150 (520) 125 (465) 125 (465) 125 (445) 150 (520) 150 (520) 150 (520)

Water Volume, gallons (L) 51.2 (194) 51.2 (194) 51.2 (194) 51.2 (194) 51.2 (194) 51.2 (194)

in (mm)

Water Volume, gallons (L) 50.8 (193) 50.8 (193) 50.8 (193) 50.8 (193) 50.8 (193) 50.8 (193)

in (mm)

Water Volume, gallons (L) 62.2 (236) 62.2 (236) 62.2 (236) 62.2 (236) 62.2 (236) 62.2 (236)

(mm)

Water Volume, gallons (L) 61.3 (232) 57.6 (218) 57.6 (218) 61.3 (232) 66.0 (250) 66.0 (250)

(mm)

Water Volume, gallons (L) 69.5 (263) 69.5 (263) 69.5 (263) 69.5 (263) 69.5 (263) 72.6 (275)

(mm)

Water Volume, gallons (L) 98.6 (373) 98.6 (373) 98.6 (373) 89.2 (339) 98.6 (373) 98.6 (373)

in (mm)

239.7 (843) 265.1 (932) 281.4 (989) 289.0 (1016) 305.8 (1075) 323.6 (1131) 993 (451) 993 (451) 993 (451) 1004 (456) 993 (451) 982 (446)

1220 (554) 1220 (554) 1220 (554) 1296 (588) 1220 (554) 1220 (554)

13928 (6317) 13928 (6317) 13928 (6317) 13928 (6317) 13928 (6317) 13928 (6317) 12904 (5852) 12904 (5852) 12904 (5852) 12904 (5852) 12904 (5852) 12904 (5852)

8 (204) 8 (204) 8 (204) 8 (204) 8 (204) 8 (204)

6 (152) 6 (152) 6 (152) 6 (152) 6 (152) 6 (152)

8 (204) 8 (204) 8 (204) 8 (204) 8 (204) 8 (204)

6 (152) 6 (152) 6 (152) 6 (152) 6 (152) 6 (152)

8 (204) 8 (204) 8 (204) 8 (204) 8 (204) 8 (204)

PFS Unit Size

IM 692-1 PFS 155C - 315C 29

Dimensional Data

Figure 24, Short shell R-22 Refrigerant

All dimensions are shown in

inches and (mm).

Overall Length

1 & 3 2 & 4 Pass 2 & 4 Pass Height With Pass Head Conn.

146 1/4 139 3/4 146 1/4 76 7/8 42

(3715) (3550) (3715) (1953) (1067)

X Y Z see note

64 7/8 36 1/2 13 5/8 Oper.

65 8 (346) 72 3/4 36 3/4 13 3/4 Ship (1651) (899) (349)

A Overall

On Same End

Center of Gravity

with Starter

Head Conn.

Both Ends

(Note 13) Starter

Overall

Width

See notes on next page.

30 PFS 155C - 315C IM 692-1

Notes for Figure 24:

1. One half inch (13) FPT evaporator and condenser relief valves must be piped per ANSI/ASHRAE 15. (1 for each evaporator, 2 for each condenser).

2. 144 inches (3658) is required at either end of the tubesheet for tube replacement. 36 inches (914) is recommended on all other sides and top for service clearance.

3. Final connections must allow for manufacturing tolerance.

4. Standard heads are shown. For dimensions of high pressure construction, water boxes, or flange type connections, contact your representative.

5. For dimensions of different condenser or evaporator pass see table.

6. Unit is shipped with an operating charge of refrigerant and oil.

7. Six 2 1/2 inch (64) dia. Lifting holes are provided.

8. All water connections are given in standard U.S. Pipe sizes. Standard connections are suitable for welding or victualic couplings.

9. Vibration isolator pads are provided for field installation 0.25 inches (6) thick when loaded.

10. If main power wiring is brought up through the floor, this wiring must be outside the envelope of the unit.

11. Pumpdown capacity is determined in accordance with ANSI/ASHRAE 15 for the maximum tube count.

12. These values are for units with standard wall thickness copper tubing only.

13. The shipping skid adds 4 inches (102) to the overall unit height.

Figure 24 , Short shell dimensions R-22 Refrigerant (continued)

Vessel Code Head Connection U.S. Pipe

Size

Evap. Cond. 1P 2P 3P

E1810 8 6 5 4 7/8

C1810 8 6 5 4 7/8

AA BB

(124) (124)

4 7/8 (124) 4 7/8 (124)

IM 692-1 PFS 155C - 315C 31

Figure 25, Standard shell dimemsions R-22 Refrigerant

All dimensions are shown

in inches and (mm)

Overall Length

1 & 3 2 & 4 Pass 2 & 4 Pass Height With Pass Head Conn

on same end

169 1/4 162 3/4 169 1/4 76 7/8 42

(4299) (4134) (4299) (1953) (1067)

X Y Z see note

79 3/8 35 1/2 13 7/8 Oper. (2016) (902) (353) 79 5/8 34 5/8 14 Ship (2023) (880) (356)

A Overall

Head Conn.

both ends

Center of Gravity

with Starter

(Note 13) Starter

Overall

Width

See Notes on Next Page.

32 PFS 155C - 315C IM 692-1

Notes for Figure 25

1. One half inch (13) FPT evaporator and condenser relief valves must be piped per ANSI/ASHRAE 15. (1 for each evaporator, 2 for each condenser).

2. 168 inches (4267) is required at either end of the tubesheet for tube replacement. 36 inches (914) is recommended on all other sides and top for service clearance.

3. Final connections must allow for manufacturing tolerance.

4. Standard heads are shown. For dimensions of high pressure construction, water boxes, or flange type connections, contact your representative.

5. For dimensions of different condenser or evaporator pass see table.

6. Unit is shipped with an operating charge of refrigerant and oil.

7. Six 2 1/2 inch (64) dia. Lifting holes are provided.

8. All water connections are given in standard U.S. Pipe sizes. Standard connections are suitable for welding or victualic couplings.

9. Vibration isolator pads are provided for field installation 0.25 inches (6) thick when loaded.

10. f main power wiring is brought up through the floor, this wiring must be outside the envelope of the unit.

11. Pumpdown capacity is determined in accordance with ANSI/ASHRAE 15 for the maximum tube count.

12. These values are for units with standard wall thickness copper tubing only.

13. The shipping skid adds 4 inches (102) to the overall unit height.

Figure 25, Standard shell dimensions R-22 Refrigerant (continued)

Vessel Code Head Connection U.S. Pipe

Size

Evap. Cond. 1P 2P 3P

E1812 8 6 5 4 7/8

C1812 8 6 5 4 7/8

AA BB

(124) (124)

4 7/8 (124) 4 7/8 (124)

IM 692-1 PFS 155C - 315C 33

Figure 26, Long shell dimemsions R-22 Refrigerant Models 155-190

All dimensions are shown

in inches and (mm)

Overall Length

1 & 3 2 & 4 Pass 2 & 4 Pass Height With Pass Head Conn

169 1/4 164 5/8 169 1/4 86 50 7/8

(4299) (4181) (4299) (2184) (1292)

X Y Z see note

77 3/4 38 1/4 20 3/8 Oper. (2473) (899) (362) 78 1/4 37 7/8 20 3/8 Ship (1988) (962) (518)

A Overall

on same end

Center of Gravity

with Starter

Head Conn.

both ends

(Note 13) Starter

Overall

Width

See Notes on Next Page.

34 PFS 155C - 315C IM 692-1

Notes for Figure 26

1. One half inch (13) FPT evaporator and condenser relief valves must be piped per ANSI/ASHRAE 15. (1 for each evaporator, 2 for each condenser).

2. 168 inches (4267) is required at either end of the tubesheet for tube replacement. 36 inches (914) is recommended on all other sides and top for service clearance.

3. Final connections must allow for manufacturing tolerance.

4. Standard heads are shown. For dimensions of high pressure construction, water boxes, or flange type connections, contact your representative.

5. For dimensions of different condenser or evaporator pass see table

6. Unit is shipped with an operating charge of refrigerant and oil.

7. Six 2 1/2 inch (64) dia. Lifting holes are provided.

8. All water connections are given in standard U.S. Pipe sizes. Standard connections are suitable for welding or victualic couplings.

9. Vibration isolator pads are provided for field installation 0.25 inches (6) thick when loaded.

10. f main power wiring is brought up through the floor, this wiring must be outside the envelope of the unit.

11. Pumpdown capacity is determined in accordance with ANSI/ASHRAE 15 for the maximum tube count.

12. These values are for units with standard wall thickness copper tubing only.

13. The shipping skid adds 4 inches (102) to the overall unit height.

Figure 26, Long shell dimensions R-22 Refrigerant Models 155-190(continued)

Vessel Code Head Connection U.S. Pipe

Size

Evap. Cond. 1P 2P 3P

E2412 10 8 8 7 1/8

C2412 10 8 8 7 1/8

AA BB

(181) (181)

7 1/8 (181) 7 1/8 (181)

IM 692-1 PFS 155C - 315C 35

Figure 27, Long shell dimemsions R-22 Refrigerant Models 200-210

All dimensions are shown

in inches and (mm)

Overall Length

1 & 3 2 & 4 Pass 2 & 4 Pass Height With Pass Head Conn

169 1/4 164 5/8 169 1/4 86 50 7/8

(4299) (4181) (4299) (2184) (1292)

Center of Gravity

X Y Z see note

78 1/8 39 1/2 20 3/4 Oper. (1984) (1003) (527) 78 1/2 38 7/8 20 3/4 Ship (1994) (987) (527)

A Overall

on same end

with Starter

Head Conn.

both ends

(Note 13) Starter

Overall

Width

See Notes on Next Page.

36 PFS 155C - 315C IM 692-1

Notes for Figure 27

1. One Half inch (13) FPT evaporator and condenser relief valves must be piped per ANSI/ASHRAE 15. (1 for each evaporator, 2 for each condenser).

2. 168 inches (4267) is required at either end of the tubesheet for tube replacement. 36 inches (914) is recommended on all other sides and top for service clearance.

3. Final connections must allow for manufacturing tolerance.

4. Standard heads are shown. For dimensions of high pressure construction, water boxes, or flange type connections, contact your representative.

5. For dimensions of different condenser or evaporator pass see table

6. Unit is shipped with an operating charge of refrigerant and oil.

7. Six 2 1/2 inch (64) dia. Lifting holes are provided.

8. All water connections are given in standard U.S. Pipe sizes. Standard connections are suitable for welding or victualic couplings.

9. Vibration isolator pads are provided for field installation 0.25 inches (6) thick when loaded.

10. If main power wiring is brought up through the floor, this wiring must be outside the envelope of the unit.

11. Pumpdown capacity is determined in accordance with ANSI/ASHRAE 15 for the maximum tube count.

12. These values are for units with standard wall thickness copper tubing only.

13. The shipping skid adds 4 inches (102) to the overall unit height.

Figure 27, Long shell dimensions R-22 Refrigerant Models 200-210(continued)

Vessel Code Head Connection U.S. Pipe

Size

Evap. Cond. 1P 2P 3P

E2412 10 8 8 7 1/8

C2212 10 8 6 5 3/4

AA BB

(181) (146)

7 1/8 (181) 6 3/8 (162)

IM 692-1 PFS 155C - 315C 37

Figure 28, Short shell dimemsions R-410A Refrigerant

All dimensions are shown

in inches and (mm)

Overall Length

1 & 3 2 & 4 Pass 2 & 4 Pass Height With Pass Head Conn

146 1/4 140 3/4 146 3/4 84 3/4 43 7/8

(3715) (3577) (3715) (2141) (1114)

Center of Gravity

X Y Z see note

64 5/8 40 15 1/4 Oper.

(1642) 1016) (387)

64 5/8 39 15 3/8 Ship

(1642) (991) (391)

A Overall

on same end

with Starter

Head Conn.

both ends

(Note 13) Starter

Overall

Width

See Notes on Next Page.

38 PFS 155C - 315C IM 692-1

Notes for Figure 28

1. one half inch (13) FPT evaporator and condenser relief valves must be piped per ANSI/ASHRAE 15. (1 for each evaporator, 2 for each condenser).

2. 144 inches (3658) is required at either end of the tubesheet for tube replacement. 36 inches (914) is recommended on all other sides and top for service clearance.

3. Final connections must allow for manufacturing tolerance.

4. Standard heads are shown. For dimensions of high pressure construction, water boxes, or flange type connections, contact your representative.

5. For dimensions of different condenser or evaporator pass see table

6. Unit is shipped with an operating charge of refrigerant and oil.

7. Six 2 1/2 inch (64) dia. Lifting holes are provided.

8. All water connections are given in standard U.S. Pipe sizes. Standard connections are suitable for welding or victualic couplings.

9. Vibration isolator pads are provided for field installation 0.25 inches (6) thick when loaded.

10. f main power wiring is brought up through the floor, this wiring must be outside the envelope of the unit.

11. Pumpdown capacity is determined in accordance with ANSI/ASHRAE 15 for the maximum tube count.

12. These values are for units with standard wall thickness copper tubing only.

13. The shipping skid adds 4 inches (102) to the overall unit height.

Figure 28, Short shell dimensions R-410A Refrigerant (continued)

Vessel Code Head Connection U.S. Pipe

Size

Evap. Cond. 1P 2P 3P

E2212 10 8 6 5 3/4

C2012 10 8 5 5 5/8

AA BB

(145) (143)

6 3/8 (161)

6 3/16

(157)

IM 692-1 PFS 155C - 315C 39

Figure 29, Standard shell dimemsions R-410A Refrigerant

All dimensions are shown

in inches and (mm)

Overall Length

1 & 3 2 & 4 Pass 2 & 4 Pass Height With Pass Head Conn

on same end

169 1/4 163 3/4 169 1/4 84 1/4 47 7/8

(4299) (4159) (4299) (2141) (1114)

X Y Z see note

78 3/8 38 1/2 15 1/2 Oper. (1991) (978) (394) 78 5/8 37 7/8 15 5/8 Ship (1997) (962) (397)

A Overall

Head Conn.

both ends

Center of Gravity

with Starter

(Note 13) Starter

Overall

Width

See Notes on Next Page.

40 PFS 155C - 315C IM 692-1

Notes for Figure 29

1. one half inch (13) FPT evaporator and condenser relief valves must be piped per ANSI/ASHRAE 15. (1 for each evaporator, 2 for each condenser).

2. 168 inches (4267) is required at either end of the tubesheet for tube replacement. 36 inches (914) is recommended on all other sides and top for service clearance.

3. Final connections must allow for manufacturing tolerance.

4. Standard heads are shown. For dimensions of high pressure construction, water boxes, or flange type connections, contact your representative.

5. For dimensions of different condenser or evaporator pass see table

6. Unit is shipped with an operating charge of refrigerant and oil.

7. Six 2 1/2 inch (64) dia. Lifting holes are provided.

8. All water connections are given in standard U.S. Pipe sizes. Standard connections are suitable for welding or victualic couplings.

9. Vibration isolator pads are provided for field installation 0.25 inches (6) thick when loaded.

10. f main power wiring is brought up through the floor, this wiring must be outside the envelope of the unit.

11. Pumpdown capacity is determined in accordance with ANSI/ASHRAE 15 for the maximum tube count.

12. These values are for units with standard wall thickness copper tubing only.

13. The shipping skid adds 4 inches (102) to the overall unit height.

Figure 29, Standard shell dimensions R-410A Refrigerant (continued)

Vessel Code Head Connection U.S. Pipe

Size

Evap. Cond. 1P 2P 3P

E2212 10 8 6 5 3/4

C2012 8 6 5 5 5/8

AA BB

(145) (143)

6 3/8 (161)

6 3/16

(157)

IM 692-1 PFS 155C - 315C 41

Figure 30, Long shell dimemsions R-410A Refrigerant

All dimensions are shown

in inches and (mm)

Overall Length

1 & 3 2 & 4 Pass 2 & 4 Pass Height With Pass Head Conn

194 1/4 188 3/4 194 1/4 84 1/4 43 7/8

(4934) (4794) (4934) (2141) (1114)

X Y Z see note

90 1/8 36 3/8 16 1/4 Oper. (2289) (924) (413) 90 1/2 35 3/4 16 1/4 Ship (2299) (908) (413)

A Overall

on same end

Center of Gravity

with Starter

Head Conn.

both ends

(Note 13) Starter

Overall

Width

See Notes on Next Page.

42 PFS 155C - 315C IM 692-1

Notes for Figure 30

1. one half inch (13) FPT evaporator and condenser relief valves must be piped per ANSI/ASHRAE 15. (1 for each evaporator, 2 for each condenser).

2. 192 inches (4877) is required at either end of the tubesheet for tube replacement. 36 inches (914) is recommended on all other sides and top for service clearance.

3. Final connections must allow for manufacturing tolerance.

4. Standard heads are shown. For dimensions of high pressure construction, water boxes, or flange type connections, contact your representative.

5. For dimensions of different condenser or evaporator pass see table

6. Unit is shipped with an operating charge of refrigerant and oil.

7. Six 2 1/2 inch (64) dia. Lifting holes are provided.

8. All water connections are given in standard U.S. Pipe sizes. Standard connections are suitable for welding or victualic couplings.

9. Vibration isolator pads are provided for field installation 0.25 inches (6) thick when loaded.

10. f main power wiring is brought up through the floor, this wiring must be outside the envelope of the unit.

11. Pumpdown capacity is determined in accordance with ANSI/ASHRAE 15 for the maximum tube count.

12. These values are for units with standard wall thickness copper tubing only.

13. The shipping skid adds 4 inches (102) to the overall unit height.

Figure 30, Long shell dimensions R-410A Refrigerant (continued)

Vessel Code Head Connection U.S. Pipe

Size

Evap. Cond. 1P 2P 3P

E2214 10 8 6 5 3/4

C2214 10 8 6 5 3/4

AA BB

(145) (146)

6 3/8 (161) 6 3/8 (162)

IM 692-1 PFS 155C - 315C 43

Field Wiring

CAUTION

PFS unit compressors are single direction rotation compressors. For this reason proper phasing of electrical power is essential. Electrical phasing must be A, B, C clockwise for electrical phases 1, 2 and 3 (A=L1 ,B=L2,C=L3). The unit is supplied with single point factory power connection and includes one MotorSaver phase failure, phase reversal protective device that will prevent operation of the unit with incorrect power phasing. The MotorSaver is factory wired and tested. Do not alter the wiring to the MotorSaver.

General Information

Wiring must comply with all applicable codes and ordinances. Warranty is void if wiring is not in accordance with specifications.

Copper wire must be used for all wiring. The PFS is typically supplied with the main power wiring for single point power connection. A

single large power terminal block is provided for field connections. Wiring within the unit is sized according to the National Electrical Code. A single field-mounted disconnect (supplied by others) is required. An optional factory mounted transformer for the 115 volt control circuit may have been provided.

Main power must enter the control panel at the location indicated on the unit illustration.

Table 9, Compressor amp draw

PFS Rated Load Amps Locked Rotor Amps Unit Volts Hz Compressor Compressor Size Delta-Delta Start

208 179 179 934 934 230 162 162 1042 1042

155C 380 60 98 98 604 604

460 81 81 489 489 575 65 65 377 377 208 179 223 934 934 230 162 202 1042 1042

170C 380 60 98 122 604 604

460 81 101 489 489 575 65 81 377 377 208 179 254 934 934 230 162 230 1042 1042

180C 380 60 98 139 604 604

460 81 115 489 489 575 65 92 377 377 208 223 223 934 934 230 202 202 1042 1042

190C 380 60 122 122 604 604

460 101 101 489 489 575 81 81 377 377 208 223 254 934 934 230 202 230 1042 1042

200B 380 60 122 139 604 604

460 101 115 489 489 575 81 92 377 377 208 254 254 934 934 230 230 230 1042 1042

210C 380 60 139 139 604 604

460 115 115 489 489 575 92 92 377 377

NOTES:

1. Allowable voltage is within ±10 % of nameplate rating.

Comp. 1 Comp. 2 Comp. 1 Comp. 2

44 PFS 155C - 315C IM 692-1

2. Compressor RLA values are for wiring sizing only. They do not reflect normal operating current draw at unit rated capacity.

Table 10, Compressor Amp Draw

PFS Rated Load Amps Locked Rotor Amps Unit Volts Hz Compressor Compressor Size Delta-Delta Start

Comp. 1 Comp. 2 Comp. 1 Comp. 2

208 286 286 934 934 230 259 259 1042 1042

235C 380 60 157 157 604 604

460 130 130 489 489 575 104 104 377 377 208 286 357 934 934 230 259 323 1042 1042

255C 380 60 157 195 604 604

460 130 162 489 489 575 104 130 377 377 208 286 406 934 934 230 259 368 1042 1042

270C 380 60 157 222 604 604

460 130 184 489 489 575 104 147 377 377 208 357 357 934 934 230 323 323 1042 1042

280C 380 60 195 195 604 604

460 162 162 489 489 575 130 130 377 377 208 357 406 934 934 230 323 368 1042 1042

300C 380 60 195 222 604 604

460 162 184 489 489 575 130 147 377 377 208 406 406 934 934 230 368 368 1042 1042

315C 380 60 222 222 604 604

460 184 184 489 489

NOTES:

1. Allowable voltage limit is within ±10 percent of nameplate rating.

2. Compressor RLA values are for wire sizing only. They do not reflect normal operating current draw at unit rated capacity.

575 147 147 377 377

IM 692-1 PFS 155C - 315C 45

Table 11, Customer wiring information

PFS Wiring to unit Power Block Wiring to Disconnect Switch

Unit Volts Hz Power Block Optional Disconnect Switch

Size Terminal Size Connector Wire Range (per phase) Size Connector Wire Range

Amps (Copper Wire Only) (Copper Wire Only) 208 665 (1) #6-350 MCM & (1) #4-500 MCM 600 (2) 250-350 MCM 230 665 (1) #6-350 MCM & (1) #4-500 MCM 400 (2) 3/0-250 MCM

155C 380 60 335 (1) #6-400 MCM 250 (1) #4-350 MCM

460 335 (1) #6-400 MCM 250 (1) #4-350 MCM 575 335 (1) #6-400 MCM 250 (1) #4-350 MCM 208 665 (1) #6-350 MCM & (1) #4-500 MCM 600 (2) 250-350 MCM 230 665 (1) #6-350 MCM & (1) #4-500 MCM 600 (2) 250-350 MCM

170C 380 60 335 (1) #6-400 MCM 400 (2) 3/0-250 MCM

180C 380 60 335 (1) #6-400 MCM 400 (1) 2/0-500 MCM

190C 380 60 335 (1) #6-400 MCM 400 (1) 2/0-500 MCM

200C 380 60 335 (1) #6-400 MCM 400 (1) 2/0-500 MCM

210C 380 60 335 (1) #6-400 MCM 400 (1) 2/0-500 MCM

460 335 (1) #6-400 MCM 400 (1) 2/0-500 MCM 575 335 (1) #6-400 MCM 250 (1) #4-350 MCM

Note:

Allowable voltage is within ±10 percent of nameplate rating.

(per phase)

46 PFS 155C - 315C IM 692-1

Table 12, Customer Wiring Information

PFS Wiring to unit Power Block Wiring to Main Circuit Breaker Unit Volts Hz Power Block Optional Main Circuit Breaker Size Terminal Size Connector Wire Range (per phase) Size Connector Wire Range (per phase)

208 665 / 665 (1) # 6-350 MCM & (1) # 4-500 MCM & NA NA 230 665 / 665 (1) # 6-350 MCM & (1) # 4-500 MCM & NA NA

235C 60 (1) # 6-350 MCM & (1) # 4-500 MCM

380 665 (1) # 6-350 MCM & (1) # 4-500 MCM 400 (2) 3/0-250 MCM 460 335 (1) # 6-400 MCM 400 (1) 2/0-500 MCM 575 335 (1) # 6-400 MCM 250 (1) #4-350 MCM 208 665 / 665 (1) # 6-350 MCM & (1) # 4-500 MCM & NA NA

230 665 / 665 (1) # 6-350 MCM & (1) # 4-500 MCM & NA NA

255C 60 (1) # 6-350 MCM & (1) # 4-500 MCM

380 665 (1) # 6-350 MCM & (1) # 4-500 MCM 600 (2) 250-350 MCM 460 665 (1) # 6-350 MCM & (1) # 4-500 MCM 400 (1) 2/0-500 MCM 575 335 (1) # 6-400 MCM 400 (1) 2/0-500 MCM 208 665 / 665 (1) # 6-350 MCM & (1) # 4-500 MCM & NA NA

230 665 / 665 (1) # 6-350 MCM & (1) # 4-500 MCM & NA NA

270C 60 (1) # 6-350 MCM & (1) # 4-500 MCM

380 665 (1) # 6-350 MCM & (1) # 4-500 MCM 600 (2) 250-350 MCM 460 665 (1) # 6-350 MCM & (1) # 4-500 MCM 400 (1) 2/0-500 MCM 575 665 (1) # 6-350 MCM & (1) # 4-500 MCM 400 (1) 2/0-500 MCM 208 665 / 665 (1) # 6-350 MCM & (1) # 4-500 MCM & NA NA

230 665 / 665 (1) # 6-350 MCM & (1) # 4-500 MCM & NA NA

280C 60 (1) # 6-350 MCM & (1) # 4-500 MCM

230 665 / 665 (1) # 6-350 MCM & (1) # 4-500 MCM & NA NA

300C 60 (1) # 6-350 MCM & (1) # 4-500 MCM

380 665 (1) # 6-350 MCM & (1) # 4-500 MCM 600 (2) 250-350 MCM 460 665 (1) # 6-350 MCM & (1) # 4-500 MCM 400 (2) 3/0-250 MCM 575 665 (1) # 6-350 MCM & (1) # 4-500 MCM 400 (1) 2/0-500 MCM 208 665 / 665 (1) # 6-350 MCM & (1) # 4-500 MCM & NA NA

230 665 / 665 (1) # 6-350 MCM & (1) # 4-500 MCM & NA NA

315C 60 (1) # 6-350 MCM & (1) # 4-500 MCM

380 665 (1) # 6-350 MCM & (1) # 4-500 MCM 600 (2) 250-350 MCM 460 665 (1) # 6-350 MCM & (1) # 4-500 MCM 600 (2) 250-350 MCM 575 665 (1) # 6-350 MCM & (1) # 4-500 MCM 400 (1) 2/0-500 MCM

NOTE:

Allowable voltage is within ±10 percent of nameplate rating

Amps (Copper Wire Only) (Copper Wire Only)

Ckt.1 / Ckt.2 Ckt.1 / Ckt.2 Ckt.1 / Ckt.2 Ckt.1 / Ckt.2

(1) # 6-350 MCM & (1) # 4-500 MCM

IM 692-1 PFS 155C - 315C 47

Table 13, Electrical data

PFS Minimum Power Supply Field Fuse Size

Unit Volts Hz Circuit Field Wire

Size Ampacity Qty. Wire Recom- Maximum

(MCA) (3) Gauge mended

208 403 6 250 450 500 230 365 6 3/0 450 500

155C 380 60 221 3 4/0 250 300

460 183 3 3/0 225 250 575 147 3 1/0 175 200 208 458 6 250 600 600 230 415 6 250 500 600

170C 380 60 251 3 250 300 350

460 208 3 4/0 250 300 575 167 3 2/0 200 225 208 497 6 250 600 700 230 450 6 250 600 600

180C 380 60 272 3 300 350 400

460 225 3 4/0 300 300 575 180 3 3/0 250 250 208 502 6 250 600 700 230 455 6 250 600 600

190C 380 60 275 3 300 350 350

460 228 3 4/0 300 300 575 183 3 3/0 225 250 208 541 6 300 700 700 230 490 6 250 600 700

200C 380 60 296 3 350 350 400

460 245 3 250 300 350 575 196 3 3/0 225 250 208 572 6 350 700 800 230 518 6 300 600 700

210C 380 60 313 3 400 400 450

460 259 3 300 300 350 575 207 3 4/0 250 250

NOTES:

1. Allowable voltage range is within ±10% of nameplate rating.

2. Minimum circuit ampacity is equal to 125% of the RLA of the largest motor plus 100% of the RLA of all other loads in the circuit.

3. Recommended power lead wire sizes based on three conductors per conduit at 100% conductor ampacity using 75°C wire and no more than 3 conductors per conduit.

4. For six conductors per conduit current carrying capacity is reduced by 20%. Consult the National Electical Code for wire sizing. All terminal block connections must be made with copper wire (type THW or THHN).

5. Recommended time delay fuse size or circuit breakers (Canadian units only) is equal to 150% of the largest compressormotor RLA plus 100% of all other loads on the circuit. Maximum time delay fuse size or circuit breakers (Canadian units only) is equal to 225% of the largest compressor-motor RLA plus 100% of all other loads on the circuit.

48 PFS 155C - 315C IM 692-1

Table 14, Electrical Data

PFS Minimum Power Supply Field Fuse Size

Unit Volts Hz Circuit Ampacity Field Wire Recom- Maximum Size (MCA) Qty.(3) Wire Guage mended

208 358 / 358 6 / 6 3/0 / 3/0 450 / 450 600 / 600 230 324 / 324 6 / 6 2/0 / 2/0 400 / 400 500 / 500

235C 380 60 353 6 3 / 0 400 500

460 293 3 350 350 400 575 234 3 250 300 300 208 358 / 446 6 / 6 3/0 / 4/0 450 / 600 600 / 800 230 324 / 404 6 / 6 2/0 / 4/0 400 / 500 500 / 700

255C 380 60 401 6 250 450 500

460 333 3 400 400 450 575 267 3 300 300 350 208 358 / 508 6 / 6 3/0 / 250 450 / 700 600 / 800 230 324 / 460 6 / 6 2/0 / 4/0 400 / 600 500 / 800

270C 380 60 435 6 250 500 500

460 360 3 500 450 500 575 288 3 350 350 400 208 446 / 446 6 / 6 4/0 / 4/0 600 / 600 800 / 800 230 404 / 404 6 / 6 4/0 / 4/0 500 / 500 700 / 700

280C 380 60 439 6 250 500 600

460 365 3 500 450 500 575 293 3 350 350 400 208 446 / 508 6 / 6 4/0 / 250 600 / 700 800 / 800 230 404 / 460 6 / 6 4/0 / 4/0 500 / 600 700 / 800

300C 380 60 473 6 250 600 600

460 392 6 3 / 0 450 500 575 314 3 400 400 450 208 508 / 508 6 / 6 250 / 250 700 / 700 800 / 800 230 460 / 460 6 / 6 4/0 / 4/0 600 / 600 800 / 800

315C 380 60 500 6 250 600 700

460 414 6 250 500 500 575 331 3 400 400 450

NOTES:

1. Allowable voltage limit is within ±10 percent of nameplate rating.

2. 235C-315C units for 208V & 230V applications require two electrical circuits and have two power blocks. Optional "main circuit breaker" and "compressor circuit breakers" are not available with these units.

3. Recommended power lead wire sizes based on three conductors per conduit at 100% conductor ampacity using 75°C wire and no more than 3 conductors per conduit.

Ckt.1 / Ckt.2 Ckt.1 / Ckt.2 Ckt.1 / Ckt.2 Ckt.1 / Ckt.2 Ckt.1 / Ckt.2

IM 692-1 PFS 155C - 315C 49

Figure 31, Typical Field Wiring

50 PFS 155C - 315C IM 692-1

Pre-Start-up

1. Open all electrical disconnects and check electrical connections are tight.

2. Verify water piping flow directions are correct and properly connected at the evaporator and

3. Using a phase tester, verify electrical phasing is A-B-C clockwise (A=L1, B=L2,C=L3).

4. Verify unit power supply is within 10% of nameplate rating.

5. Verify power supply wiring is the correct size and has a minimum temperature insulation rating

6. Verify all mechanical and electrical inspections have been completed according to local code.

7. Make certain all auxilliary control equipment is operative and an adequate cooling load is

8. Check all compressor valve connections for tightness.

9. Open compressor suction valve until backseated. (This is an optional valve)

10. Open discharge shutoff valve until backseated

11. Vent air from the evaporator and condenser water system piping.

12. Open all water flow valves and start chilled water pump.

13. Check all piping for leaks.

14. Flush the evaporator and condenser system piping.

condenser.

of 75°C.

available.

Sequence of Operation

The following sequence of operation is typical for McQuay models PFS155C through PFS315C screw water chillers. The sequence may vary depending on the software revision or various options that maybe installed on the chiller.

Initial Conditions

Before energizing the control box, do the following:

1. Verify the two control circuits are powered through the primary fuses FU1, FU2 and the secondary fuse FU3.

2. Verify power is developed through the transformer CPT in the starter and is 120 VAC on the secondary.

3. Make certain the S1 switch is in the off position.

When applying power to the control for the first time do the following:

1. Open left door and the top door to each control box.

2. Apply power and observe the following:

§ Display lights up

§ Unit Status screen appears

§ EXV board lights rapidly sequence closed.

3. Listen for stepper motors closing with a racheting sound.

4. Verify Unit Status Screen on the display indicates Off: Front Panel Sw.

IM 692-1 PFS 155C - 315C 51

Off Conditions

With the power on the controller there several off states: Off: Manual: when the setpoint in menu “11 Control Mode” is set to the Mode= Manual Off. To

change, simply set the Mode= Auto: Network (or any other running mode). Off: Front Panel Sw: when the panel switch is in the “Stop” position. To change move the switch

to “Auto” position.

Off Alarm remove the alarm state then clear the alarm to remove this off state. Off Compressor 1 or Off Compressor 2 is the on / off switch inside the top right control box

door. Turn to ‘on’ to clear.

Alarm

The alarm light on the front panel illuminates when the particular control receives an active alarm state. The unit or a particular compressor will be locked out. The other compressor will start if only one is locked out by a compressor fault.

Initial Start-up

CAUTION

Initial Start-up must be performed by McQuayService personnel.

1. Set up control as described in Initial Conditions.

2. Turn front panel switch to Auto position. (chilled water flow pump relay will energize.)

3. If the field installed flow indicator does not indicated chilled water flow after 30 seconds, then the alarm output will be energized.

Note: The unit starts the compressor with the least starts and run hours while in auto lead lag setting

4. When the Active Setpoint is 3 °F lower than the actual leaving water temperature, the chiller starts.

5. When the chiller starts the following occurs:

§ Crank case heaters de-energize

§ Compressor starts

§ Liquid injection solenoid is energized

§ Motor cooling solenoid is energized

§ Suction injection solenoids are energized

6. Suction injection will turn off when the following conditions have been met:

§ Discharge superheat drops below 3 °F

§ Liquid Presence sensor shows liquid

§ Absolute Pressure ratio is greater than 1.2 (Abs. Condenser Psia / Abs. Evaporator Psia)

52 PFS 155C - 315C IM 692-1

7. The unit status changes:

FROM TO

EvapOn-Recirc **Sec All Systems Off

All Systems Off MCR Started

MCR Started Pre-purge

Pre-purge Open Solenoid

Open Solenoid Running Min Amp Lim

Running Min Amp Lim Running: % Cap 50

8. The following occurs if additional cooling capacity is required:

§ Controllers add capacity by changing the capacity control solenoids outputs 6, 7, and 8.

§ As capacity increases the second compressor is started

§ After both compressor are running the unit continues to load by changing the capacity

control solenoids outputs 12, 13, and 14.

Load Recycle

As chilled water requirements lessen, the controls unload the compressors until the chilled water drops below the lag cutoff point for the delay time required. The control will shut off the lag compressor and reduced load will cause the leaving water temperature to drop 3 ° F below the active setpoint. The compressor de-energizes on Load Recycle and the display will show Waiting For Load. The chilled water pump will remain on.

IM 692-1 PFS 155C - 315C 53

13600 Industrial Park Boulevard, P.O. Box 1551, Minneapolis, MN 55440 USA (612) 553-5330

McQuay PFS 155C Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Introduction

Installation

Evaporator and Condenser Water Flow and Pressure Drop

Physical Data

Dimensional Data

Field Wiring

Pre-Start-up

Sequence of Operation