Goodman AWS174CDH Installation Manual

Installation, Operation,

and Maintenance Manual

Pathfinder®

Air-cooled Screw Chillers

Model AWS

170 to 550 Tons (600 to 1935 kW) 60Hz

164 to 604 Tons (575 to 2125 kW) 50Hz HFC-134a Refrigerant

IOM 1202-2

Group: Chiller

Part Number: IOM1202-2

Date: May 2015

			Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 3	Circuit Functions . . . . . . . . . . . . . . . . . . . . .	. 126. . . . .
Installation and Startup . . . . . . . . . . . . . . . . . . . . .	. . . 4	Alarms and Events . . . . . . . . . . . . . . . . . . . . . . . .	. . 137
Lifting and Mounting Information . . . . . . . . . . . . .	. . 16	Using the Controller . . . . . . . . . . . . . . . . . . . . . . . .	. 145
Isolator Information . . . . . . . . . . . . . . . . . . . . . .	. .50.	. Optional Remote User Interface . . . . . . . . . . . .	. .148.
Electrical Information . . . . . . . . . . . . . . . . . . . . . . .	. . 59	Optional Compressor VFD . . . . . . . . . . . . . . . . . . .	. 150
Pressure Drop Data . . . . . . . . . . . . . . . . . . . .	. .82.	. . . Startup and Shutdown . . . . . . . . . . . . . . . . . . . . . .	. 154
Controller Operation . . . . . . . . . . . . . . . .	. .94.	. . System. . . . Maintenance . . . . . . . . . . . . . . . . . . .	. 156. . . .
Sequence of Operation . . . . . . . . . . . . . . . .	.108. . . . .Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		. 160
Unit Functions . . . . . . . . . . . . . . . . . . . .	.114. . . . . . . .

Hazard Identification

DANGER

Dangers indicate a hazardous situation which will result in serious injury or death if not avoided.

WARNING

Warnings indicate potentially hazardous situations which can result in property damage, servere personal injury or death if not avoided.

CAUTION

Cautions indicate potentially hazardous situations which can result in personal injury or equipment damage if not avoided.

Manufactured in an ISO 9001 & ISO 14001 certified facility

©2015 Daikin Applied. Illustrations and data cover the Daikin Applied product at the time of publication and we reserve the right to make changes in design and construction at any time without notice.

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Pre-Start Checklist – Screw Chillers

Must be completed, signed and provided to Daikin Applied at least 2 weeks prior to requested start date.

Job Name

Installation Location

Customer Order Number

Model Number(s)

G.O. Number(s)

Chilled Water

Yes

No

N/A

Initials

Piping Complete
Water strainer installed on evaporator entering chilled water piping per IM
Water System filled, flushed and vented
Pumps installed and operational (rotation checked, strainers cleaned)
Controls operational (3-way valves, face/bypass dampers, bypass valves, etc.)
Water system operated and tested; flow meets unit design requirements
Flow switch installed and wired
Vent installed on evaporator
Glycol at design %
Electrical	Yes	No	N/A	Initials
Building controls operational
*Power leads connected to power block or optional disconnect
Power leads have been checked for proper phasing and voltage
All interlock wiring complete and compliant with Daikin specifications
Power applied at least 24 hours before startup
Oil heaters energized at least 24 hours before startup
Chiller components (EXV Sensors Transducers) installed and wired properly.
*Wiring complies with National Electrical Code and local codes (See Notes)
Remote EXV wired with shielded cable
Miscellaneous	Yes	No	N/A	Initials
Unit control switches all off
Remote Evaporator Piping factory reviewed and approved
All refrigerant components/piping leak tested, evacuated and charged
Thermometers, wells, gauges, control, etc., installed
Minimum system load of 80% capacity available for testing/adjusting controls
Document Attached: Technical Breakdown from Selection Software
Document Attached: Final Order Acknowledgement
Document Attached: Remote evaporator piping approval

Notes: The most common problems delaying start-up and affecting unit reliability are:

1.Field installed compressor motor power supply leads too small. Questions: Contact the local Daikin sales representative*. State size, number and type of conductors and conduits installed:

a.From Power supply to chiller

*Refer to NEC Article 430-22 (a)

2.Remote Evaporator piping incomplete or incorrect. Provide approved piping diagrams.

3.Items on this list incorrectly acknowledged may result in delayed start and extra expenses incurred for return trips.

Contractor Representative		Daikin Applied Sales Representative
Signed:		Signed:
Name:		Name:
Company:		Company:
Date:		Date:
Phone/Email:		Phone/Email:

©2014 Daikin Applied

Form SF01017 P/N 331977001

10OCT2014

Introduction

General Information

Daikin Pathfinder® air-cooled chillers are complete, selfcontained chillers that include the latest in engineered components arranged to provide a compact and efficient unit.

Each unit is completely assembled, factory wired, evacuated, charged, tested and comes complete and ready for installation. Each compressor has an independent refrigeration circuit. Liquid line components included are a manual liquid line shutoff valve, charging port, filter-drier, sight-glass/moisture indicator, and electronic expansion valve. A discharge check valve and discharge shutoff valve are included and a compressor suction shutoff valve is optional. Other features include compressor heaters, evaporator heaters for freeze protection, automatic, one-time pumpdown of each refrigerant circuit upon circuit shutdown, and an advanced fully integrated controller.

Pathfinder® units are available in one of three unit efficiency levels - standard, high, and premium.

Information on the operation of the unit MicroTech®III controller can be found starting on page 94.

Introduction

Remote Evaporator Models

For enhanced application flexibility, Pathfinder® chillers are also available with a remote evaporator option. Information on remote evaporator units can be found in the current installation manual for remote evaporator configurations, available at www.DaikinApplied.com.

Inspections

When the equipment is received, carefully check all items against the bill of lading to verify for a complete shipment. Check all units for damage upon arrival. All shipping damage must be reported to the carrier and a claim must be filed with the carrier. Check the unit name plate before unloading the unit to be sure that it agrees with the power supply available. Physical damage to a unit after shipment is not the responsibility of Daikin.

NOTE: Unit shipping and operating weights are shown in the Lifting and Mounting section beginning on page 16

Nomenclature

AWS XXX C D S E

Model

Unit configuration

AWS = Air-Cooled World Product Screw Compressor

E = Standard packaged

Nominal unit size

M = Remote Evaporator

Unit efficiency

(cataloged size—nominal unit capacity)

S = Standard

Design vintage

H = High

P = Premium

Unit compressors

D = Dual compressors

T = Triple compressors

Table 1: Operating Limits

	Maximum standby ambient temperature	130°F (54.4°C)
	Maximum operating standard ambient temperature	105°F (40.6°C)
	with optional high ambient package
	Note: some standard efficiency units may not operate fully loaded up to the 125°F maximum ambient temp limit. Some	125°F (52°C)
	units offer a reduced RFS option limiting max ambient to 118°F. Contact the Daikin Applied sales office for information.
	Minimum operating ambient temperature (standard control)	35°F (2°C)
	Minimum operating ambient temperature (with optional low-ambient control)	0°F (-18°C)
	Leaving chilled water temperature [NOTE: 60°F (15.6°C) max with VFD and reduced RFS option]	40°F to 70°F
		(4.4°C to 21.1°C)
	Leaving chilled fluid temperatures (with anti-freeze) - Unloading is not permitted with fluid leaving temperatures below	20°F to 70°F
	30°F (-1°C). [NOTE: 60°F (15.6°C) max with VFD and reduced RFS option]	(-6.7°C to 21.1°C)
	Operating chilled water delta-T range	6°F to 18°F
		(3.3°C to 10°C)
	Maximum evaporator operating inlet fluid temperature	88°F (31.1°C)
	Maximum evaporator non-operating inlet fluid temperature	100°F (38°C)

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IOM 1202-2 • PATHFINDER® MODEL AWS CHILLERS

Installation and Startup

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

WARNING

Sharp edges and coil surfaces are a potential injury hazard. Avoid contact with them.

Startup by a Daikin Applied service representative is included on all Pathfinder® units sold for installation within the U.S. and Canada and must be performed by them to initiate the standard Limited Product Warranty. Startup by any party other than a Daikin Applied service representative will void the

Limited Product Warranty. Two-week prior notification of startup is required. The contractor should obtain a copy of the Startup Scheduled Request Form from the sales representative or from the nearest Daikin Applied service office.

WARNING

Escaping refrigerant can displace air and cause suffocation. Immediately evacuate and ventilate the equipment area. If the unit is damaged, follow Environmental Protection Agency (EPA) requirements. Do not expose sparks, arcing equipment, open flame or other ignition source to the refrigerant.

Handling

DANGER

Improper lifting or moving of a unit can result in property damage, severe personal injury or death. Follow rigging and moving instructions carefully.

Avoid rough handling shock due to impact or dropping the unit. Do not push or pull the unit. Never allow any part of the unit

to fall during unloading or moving as this can result in serious damage.

To lift the unit, lifting tabs with 3” (76 mm) diameter holes are provided on the base of the unit. All lifting holes must be used when lifting the unit. Spreader bars and cables should

be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1).

Location

Locate the unit outdoors and provide proper airflow to the condenser. (See page 5 for required clearances.)Using less clearance than shown in Figure 2 can cause discharge

air recirculation to the condenser and could have a significant detrimental effect on unit performance.

Due to the shape of the condenser coils on Pathfinder® chillers, it is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length, thus minimizing the wind effect on condensing pressure and performance. If low ambient temperature operation is expected, optional louvers should be installed if the unit has no protection against prevailing winds.

Installation and Startup

For pad-mounted units, it is recommended that the unit be raised a few inches with suitable supports such as neoprene waffle vibration pads, located at least under the mounting locations. This will allow water to drain from under the unit and facilitate cleaning under it.

Figure 1: Required Lifting Method

NOTE: 1.Unit with 8 lifting points illustrated above; the number of condenser sections, fans, and lifting points can vary from this diagram.see lifting/mounting drawings beginning on page 16 to identfy the number of lifting points for a specific unit.

2.All rigging points must be used. See weights at lifting points beginning on page 16 for each specific size unit.

3.Crosswise and lengthwise spreader bars must be used to avoid damage to unit.

Mounting Hole Access

The inside of the base rail is open to allow access for securing mounting bolts, etc.

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Installation and Startup

Service Access

Compressors, filter-driers, and manual liquid line shutoff valves are accessible on each side or end of the unit. The evaporator heater is located on the barrel.

The control panels are located on the end of the chiller. The left-hand control box contains the unit and circuit

microprocessors as well as transformers, fuses and terminal. The right-hand panel contains a circuit breaker. A minimum of four feet of clearance is required in front of the panels. The side clearance required for airflow provides sufficient service clearance.

On all Pathfinder® units, the condenser fans and motors can be removed from the top of the unit. The complete fan/motor assembly can be removed for service. The fan blade must be removed for access to wiring terminals at the top of the motor.

DANGER

Disconnect, lockout and tag all power to the unit before servicing condenser fan motors or compressors. Failure to do so can cause bodily injury or death.

Do not block access to the sides or ends of the unit with piping or conduit. These areas must be open for service access.

Do not block access to the control panels with field-mounted disconnect switches.

Clearance Requirements

The clearance requirements shown are a general guideline and cannot account for all scenarios. Such factors as prevailing winds, additional equipment within the space, design outdoor air temperature, and numerous other factors may require more clearance than what is shown.

Figure 2: Guidelines

NOTE: 1 Minimum side clearance between two units is 12 feet (3.7 m). See Case 2 for spacing closer than 12 ft.

2 Minimum clearance on each side is 8 feet (2.4 m) when installed in a pit no deeper than the unit height. Unit must not be installed in a pit or enclosure that is deeper or taller than the height of the unit unless extra clearance is provided per note 4. See Case 5

for performance adjustment factors when installations vary from minimum values.

3 Minimum side clearance to a side wall or building taller than the unit height is 6 feet (1.8 meters), provided no solid wall above 6 feet (1.8 meters) is closer than 12 feet (3.7 meters) to the opposite side of the unit. See Case 1 for performance adjustment factors when installations vary from minimum values.

4 There must be no obstruction of the fan discharge.

Restricted Air Flow

The clearances required for design operation of Pathfinder® air-cooled chillers are described in the previous section. Occasionally, these clearances cannot be maintained due to site restrictions such as units being too close together or a fence or wall restricting airflow, or both. Pathfinder® chillers have several features that may help mitigate the penalties attributable to restricted airflow.

The condenser section is “W” shaped, as shown below. This allows inlet air for these coils to come in from both sides and the bottom. All the coils in one “V” section serve one compressor except for 3 circuit units which use both sides of the “W” shaped condenser coil..

The MicroTech® III control is proactive in response to “offdesign conditions”. In the case of single or compounded influences restricting airflow to the unit, the microprocessor will act to keep the unit running (at reduced capacity), rather than allowing a shut-off on high discharge pressure.

Figure 3: Air Flow

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IOM 1202-2 • PATHFINDER® MODEL AWS CHILLERS

Installation and Startup

Case 1: Building or Wall on One Side of Unit

The existence of a screening wall or the wall of a building in close proximity to an air-cooled chiller is common in both rooftop and ground level applications. Hot air recirculation on the coils adjoining the wall will increase compressor

discharge pressure, decreasing capacity and increasing power consumption.

When close to a wall, it is desirable to place chillers on the north or east side of them. It is also desirable to have prevailing winds blowing parallel to the unit’s long axis. The worst case is to have wind blowing hot discharge air into the wall.

Figure 4: Case 1 - Unit Adjacent to Wall

Figure 5: Case 1 - Adjustment Factors

Case 2: Two Units Side By Side

Two or more units sited side by side are common. If spaced closer than 12 feet (3.7 meters) it is necessary to adjust the performance of each unit; circuits adjoining each other are affected. If one of the two units also has a wall adjoining it, see Case 1. Add the two adjustment factors together and apply to the unit located between the wall and the other unit.

Mounting units end to end will not necessitate adjusting performance. Do not use pit or solid wall surrounds where the ambient air temperature exceeds 100°F (38°C).

Figure 6: Case 2 - Two Units Side by Side

Figure 7: Case 2 - Adjustment Factors

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Installation and Startup

Case 3: Three or More Units Side By Side

When three or more units are side by side, the outside chillers

(1 and 3 in this case) are influenced by the middle unit only on their inside circuits. Their adjustment factors will be the same as Case 2. All inside units (only number 2 in this case) are influenced on both sides and must be adjusted by the factors shown below.

Figure 8: Case 3 - Three or More Units

Figure 9: Case 3 - Adjustment Factors

Case 4: Open Screening Walls

Decorative screening walls are often used to help conceal a unit either on grade or on a rooftop. Design these walls such that the combination of their open area and distance from the unit do not require performance adjustment. It is assumed that the wall height is equal to or less than the unit height when mounted on its base support. This is usually satisfactory for concealment. If the wall height is greater than the unit height, see Case 5, Pit Installation.

The distance from the sides of the unit to the side walls must be sufficient for service, such as opening control panel doors.

If each side wall is a different distance from the unit, the distances can be averaged providing either wall is not less than 8 feet (2.4 meters) from the unit. For example, do not average 4 feet and 20 feet to equal 12 feet (1 meter and 5 meters to equal 3 meters).

Figure 10: Case 4 - Open Screening Walls

Figure 11: Case 4 - Adjustment Factor

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IOM 1202-2 • PATHFINDER® MODEL AWS CHILLERS

Installation and Startup

Case 5: Pit/Solid Wall Installation

Pit installations can cause operating problems resulting from recirculation and restriction can both occur. A solid wall surrounding a unit is substantially the same as a pit and the data presented here should be used.

Steel grating is sometimes used to cover a pit to prevent accidental falls or trips into the pit. The grating material and installation design must be strong enough to prevent such accidents, yet provide abundant open area to avoid serious recirculation problems. Have any pit installation reviewed by a Daikin Applied sales representative prior to installation to make sure it has sufficient air-flow characteristics, and approved by the installation design engineer to avoid risk of accident.

Figure 12: Case 5 - Pit Installation

Figure 13: Case 5 - Adjustment Factors

Full Load Capacity Adjustment Factor

	6..00
						D=6 ft			D=8 ft
						(1..8m)			(2..4m)
(%)	5..00
Reduction	4..00
	3..00
Capacity
										D=10 ft
	2..00									(3..1m)
	1..00
	0..00
	8			10		12			14
	(2..4)			(3..1)		(3..7)			(4..3)

H - Height of Wall or Building in ft.. (m)

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Installation and Startup

Chilled Water Piping

Figure 14: Typical Piping, Shell and Tube Evaporator

	VENT	LEAVING FLUID
	3/8” PIPE PLUG
		TEMP. SENSOR
	OUTLET			VIBRATION
				ELIMINATOR
INLET				FLOW
				SWITCH
		VALVED
		PRESSURE
		GAUGE		GATE
		VIBRATION		VALVE
			BALANCING
		ELIMINATOR
			VALVE
DRAIN	WATER	GATE
	STRAINER			FLOW
		VALVE
PROTECT ALL FIELD PIPING
AGAINST FREEZING			FLOW

CAUTION

To prevent damage to the evaporator and potential chiller failure, a supply strainer is required in the inlet water piping which connects to this evaporator. This strainer must be installed prior to operation of the chilled liquid pumps.

Field installed water piping to the chiller must include:

•A cleanable strainer installed at the water inlet to the evaporator to remove debris and impurities before they reach the evaporator. Install cleanable strainer within 5 feet (1500 mm) of pipe length from the evaporator inlet connection and downstream of any welded connections (no welded connections between strainer and evaporator).

•AWS-C models require a strainer with perforations no larger than 0.125” (3.2 mm) diameter. See the Inlet Strainer Guidelines on page 10 for more information.

•A water flow switch must be installed in the horizontal piping of the supply (evaporator outlet) water line to avoid evaporator freeze-up under low or no flow conditions. The flow switch may be ordered as a factory-installed option, a field-installed kit, or may be supplied and installed in the field. See page 11 for more information.

•Purge air from the water system before unit start-up to provide adequate flow through the evaporator.

•Adequate piping support, independent from the unit, to eliminate weight and strain on the fittings and connections.

It is recommended that the field installed water piping to the chiller include:

•Thermometers at the inlet and outlet connections of the evaporator.

•Water pressure gauge connection taps and gauges at

the inlet and outlet connections of the evaporator for measuring water pressure drop.

•Shutoff valves are necessary to isolate the unit from the piping during unit servicing.

•Minimum bends and changes in elevation to minimize pressure drop.

•An expansion tank or regulating valve to maintain adequate water pressure

•Vibration eliminators in both the supply and return water lines to reduce transmissions to the building.

•Flush the system water piping thoroughly before making connections to the unit evaporator.

•Piping insulation, including a vapor barrier, helps prevent condensation and reduces heat loss.

•Regular water analysis and chemical water treatment for the evaporator loop is recommended immediately at equipment start-up.

Chilled Water Pump

It is important that the chilled water pumps be wired to, and controlled by, the chiller controller. The chiller controller has the capability to selectively start pump A or B or automatically alternate pump selection and also has standby operation capability. The controller will energize the pump whenever at least one circuit on the chiller is enabled to run, whether there is a call for cooling or not. This helps ensure proper unit startup sequence. The pump will also be turned on when the water temperature goes below the Freeze Setpoint for longer than

a specified time to help prevent evaporator freeze-up. Wiring connection points are shown in Figure 56 on page 60.

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IOM 1202-2 • PATHFINDER® MODEL AWS CHILLERS

Installation and Startup

CAUTION

Adding glycol or draining the system is the recommended method of freeze protection. If the chiller does not have the ability to control the pumps and the water system is not drained in temperatures below freezing, catastrophic evaporator failure may occur. Adding glycol or draining the system is the recommended method of freeze protection. If the chiller does not have the ability to control the pumps and the water system is not drained in temperatures below freezing, catastrophic evaporator failure may occur.

Failure to allow pump control by the chiller controller may cause the following problems:

1.If any device other than the chiller attempts to start the chiller without first starting the pump, the chiller will lock out on the No Flow alarm and require manual reset.

2.If the chiller evaporator water temperature drops below the “Freeze setpoint” the chiller will attempt to start the water pumps to avoid evaporator freeze. If the chiller does not have the ability to start the pumps, the chiller will alarm due to lack of water flow.

3.If the chiller does not have the ability to control the pumps and the water system is not to be drained in temperatures below freezing, the chiller may be subject to catastrophic evaporator failure due to freezing. The freeze rating of the evaporator is based on the immersion heater and pump operation. The immersion heater itself may not be able to properly protect the evaporator from freezing without circulation of water.

Inlet Strainer Guidelines

An inlet water strainer kit must be installed in the chilled water piping before the evaporator inlet. Two paths are available to meet this requirement:

1.A field-installed kit shipped-loose with the unit is available for all unit sizes and consists of:

•Y-type area strainer with 304 stainless steel perforated basket, Victaulic pipe connections and strainer cap [a strainer with perforations no larger than 0.125” (3.2 mm) diameter for AWS-C models].

•Extension pipe with two Schrader fittings that can be used for a pressure gauge and thermal dispersion flow switch. The pipe provides sufficient clearance from the evaporator for strainer basket removal.

•½-inch blowdown valve

•Two grooved clamps

The strainer is sized per Table 2 and has the pressure drop shown in the Strainer Pressure Drop graph. Connection sizes are given in the Pressure Drop Data section on page 82.

2.A field-supplied strainer that meets specification and installation requirements of this manual.

Table 2: Strainer Sizing Data

	Strainer	Strainer Plus	Strainer
		Pipe Length	Weight
	Size (in.)
		(in.)	(lbs)
	6	30.5	72
	8	36.0	125
	10	43.0	205

Figure 15: Strainer Pressure Drop

Installing Inlet Strainer (Field-installed Kit)

The extension pipe is located adjacent to the evaporator with the strainer then mounted to it. The strainer must be mounted per manufacturer’s instruction with the arrows in the direction of flow; inlet and outlet are noted along with the arrows.

Use one Victaulic clamp to mount the extension pipe to the evaporator and the second to mount the strainer to the pipe.

The clamps to mount the field piping to the strainer are field supplied. The piping and strainer must be supported to prevent any stress on the evaporator nozzle.

The extension pipe has two Schrader fittings that can be used as desired. The ball valve can be installed in the strainer basket cover as a blow-down valve.

System Water Volume

All chilled water systems need adequate time to recognize a load change, respond to that load change and stabilize, without undesirable short cycling of the compressors or loss of control. In air conditioning systems, the potential for short cycling usually exists when the building load falls below the minimum chiller plant capacity or on close-coupled systems with very small water volumes.

Some of the things the designer should consider when looking at water volume are the minimum cooling load, the minimum chiller plant capacity during the low load period and the desired cycle time for the compressors.

Assuming that there are no sudden load changes and that the chiller plant has reasonable turndown, a rule of thumb of

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Installation and Startup

“gallons of water volume equal to two to three times the chilled water gpm flow rate” is often used. Refer to AG 31-003 for method of calculating “Minimum Chilled Water Volume”.

A properly designed storage tank may be added if the system components do not provide sufficient water volume.

Variable Speed Pumping

Variable water flow involves reducing the water flow through the evaporator as the load decreases. Daikin chillers are designed for this duty, provided that the rate of change in water flow is slow, and the minimum and maximum flow rates for the evaporator are not exceeded.

The recommended maximum change in water flow is 10 percent of the change per minute. For example, if the maximum (design) flow is 200 gpm and the flow is reduced to a minimum of 140 gpm, the change in flow is 60 gpm, so the maximum change per minute would be 10% of 60, or 6 gpm per minute. It would take ten minutes to change the flow through the entire range.

The water flow through the evaporator must remain between the minimum and maximum values listed, beginning on page 82. Note that units with variable chilled water flow can tolerate lower minimum flows than constant flow systems. If flow drops below the minimum allowable, large reductions in heat transfer can occur. Unit set point “Variable Evap Flow”

must be set to “Yes”, if the chill water flow is variable. If the flow exceeds the maximum rate, excessive pressure drop and tube erosion can occur.

Evaporator Freeze Protection

Pathfinder® chillers are equipped with thermostatically controlled evaporator heaters that help protect against freezeup down to -20°F (-28°C). The immersion heater itself may not be able to properly protect the evaporator from freezing without circulation of water, and it is important that the chilled water pumps are wired to, and controlled by, the chiller’s controller. Additionally, use at least one of the following procedures during periods of sub-freezing temperatures:

1.Add a concentration of a glycol anti-freeze with a freeze point 10°F below the lowest expected temperature. This will result in decreased capacity and increased pressure drop. Do not use automotive grade antifreezes as they contain inhibitors harmful to chilled water systems. Use only glycols specifically designated for use in building cooling systems.

2.Drain the water from outdoor equipment and piping and blow the chiller tubes dry from the chiller. Do not energize the chiller heater when water is drained from the vessel.

NOTE: The heaters come from the factory connected to the control power circuit. The control power can be rewired in the field to a separate 115V supply (do not wire directly to the heater). See the field wiring diagram on page 60. If this is done, it should power the entire control circuit. Mark the disconnect switch clearly to avoid accidental deactivation of the heater during freezing temperatures. Exposed chilled water

piping also requires protection. If the evaporator is drained for winter freeze protection, the heaters must be de-energized to prevent heater burnout.

Table 3: Freeze Protection

	% Volume Glycol Concentration Required
Temp.
	For Freeze Protection		For Burst Protection
°F (°C)
	Ethylene	Propylene	Ethylene	Propylene
	Glycol	Glycol	Glycol	Glycol
20 (6.7)	16	18	11	12
10 (-12.2)	25	29	17	20
0 (-17.8)	33	36	22	24
-10 (-23.3)	39	42	26	28
-20 (-28.9)	44	46	30	30
-30 (-34.4)	48	50	30	33
-40 (-40.0)	52	54	30	35
-50 (-45.6)	56	57	30	35
-60 (-51.1)	60	60	30	35

Notes:	“Freeze protection” maintains the solution in a
	pumpable, usable liquid state. “Burst protection”
	prevents pipes from rupturing, but solution may be in
	a gel state and not pumpable. In most applications,
	“burst” protection is sufficient; concentrations over
	30% Ethylene Glycol or 35% Propylene Glycol will
	result in efficiency and capacity losses with negligible
	protection increases and are not recommended.
	These values are examples only and cannot be
	appropriate to every situation. Generally, for an
	extended margin of protection, select a temperature
	at least 15°F lower than the expected lowest ambient
	temperature. Inhibitor levels should be adjusted for
	solutions less than 25% glycol.
	Glycol of less than 25% concentration is not
	recommended, unless inhibitors are adjusted,
	because of the potential for bacterial growth and loss
	of efficiency.

Flow Switch

A flow switch must be included in the chilled water system to prove that there is adequate water flow before the unit can start. It also serves to shut down the unit in the event that water flow is interrupted in order to guard against evaporator freeze-up.

A factory-mounted, solid state, thermal dispersion flow switch is available as an option.

A field-installed and wired version for remote evaporators is also available as a kit (Accessory part number 332688401).

A paddle-type flow switch for field mounting and wiring is also available as a kit (Accessory part number 017503300). It is adaptable to pipe sizes from 1” (25mm) to 8” (203mm).

Installation should be per manufacturer’s instructions included with the switch. There is also a set of normally closed contacts on the switch that can be used for an indicator light or an alarm

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11

IOM 1202-2 • PATHFINDER® MODEL AWS CHILLERS

Installation and Startup

to indicate when a “no flow” condition exists. Flow switches should be calibrated to shut off the unit when operatred below the minimum listed flow rate for the unit listed in the Pressure

Drop section beginning on page 82. The minimum required pipe diameter before and after the switch is 1 1/4” (32 mm).

Figure 16: Flow Switch Diagram

Refrigerant Charge

All packaged units are designed for use with R-134a and are shipped with a full operating charge. The operating charge for each unit is shown in the Physical Data Tables in the current catalog, available at www.DaikinApplied.com.

Glycol Solutions

When using glycol anti-freeze solutions, the chiller’s capacity, glycol solution flow rate, and pressure drop through the evaporator can be calculated using the following:

Note: The procedure below does not specify the type of glycol. Use the derate factors found in Table 4 or Table 5 for corrections when using glycol.

1.Capacity - Cooling capacity is reduced from that with plain water. To find the reduced value, multiply the chiller’s water system tonnage by the capacity correction factor to find the chiller’s capacity when using glycol.

2.Flow - To determine flow (or Delta-T) knowing Delta-T (or flow) and capacity:

GPM = (24) (tons) (flow factor)

Delta T

3.Pressure drop - To determine pressure drop through the evaporator when using glycol, enter the water pressure drop curve at the water flow rate. Multiply the water pressure drop found there by the “PD” factor to obtain corrected glycol pressure drop.

4.Power - To determine glycol system kW, multiply the water system kW by the factor designated “Power”.

Test coolant with a clean, accurate glycol solution hydrometer (similar to that found in service stations) or refractometer

to determine the freezing point. Obtain percent glycol from the freezing point table below. On glycol applications, the

supplier normally recommends that a minimum of 25% solution by weight be used for protection against corrosion or that additional inhibitors should be employed.

CAUTION

Do not use automotive grade antifreeze. Industrial grade glycols must be used. 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.

Performance Adjustment Factors

AWS chillers are designed to operate with leaving anti-freeze solution temperatures per software range limits. Consult the local Daikin Applied sales office for performance outside these temperatures. Leaving chilled fluid temperatures below

40°F (4.4°C) result in evaporating temperatures at or below the freezing point of water and a glycol solution is required. MicroTech® III control inhibits compressor unloading at leaving fluid temperatures below 30°F (-1°C).

Low fluid temperatures or high equipment room humidity may require optional double evaporator insulation. The system designer should determine its necessity. The use of glycol will reduce the performance of the unit depending on its concentration. Take this into consideration during initial system design. On glycol applications, the supplier typically recommends that a minimum of 25% solution by weight be used for protection against corrosion, or additional inhibitors will be required.

Table 4: Ethylene Glycol Correction Factors

	%	Freeze Point		Capacity	Power	Flow	PD
	E..G	oF	oC
	10	26	-3.3	0.996	0.998	1.036	1.097
	20	18	-7.8	0.988	0.994	1.061	1.219
	30	7	-13.9	0.979	0.991	1.092	1.352
	40	-7	-21.7	0.969	0.986	1.132	1.532
	50	-28	-33.3	0.958	0.981	1.182	1.748

Table 5: Propylene Glycol Correction Factors

	%	Freeze Point		Capacity	Power	Flow	PD
	P..G	oF	oC
	10	26	-3.3	0.991	0.996	1.016	1.092
	20	19	-7.2	0.981	0.991	1.032	1.195
	30	9	-12.8	0.966	0.985	1.056	1.345
	40	-5	-20.6	0.947	0.977	1.092	1.544
	50	-27	-32.8	0.932	0.969	1.14	1.906

IOM 1202-2 • PATHFINDER® MODEL AWS CHILLERS

12

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Installation and Startup

Electrical Connections

All wiring must be done in accordance with applicable local and national codes. Pathfinder® units can be ordered with either standard multi-point power or optional single point power connections and with various disconnect and circuit breaker options. Wiring within the unit is sized in accordance with the U.S.A. National Electrical Code. Field-supplied disconnect switches are required if not factory-supplied with the unit.

Table 6: Electric Power Connection Option

	Multi-Point	Single-Point
	Power Connection	Power Connection
	Standard:	Optional:
	Disconnect switch per circuit,
		one power block, compressor
	no compressor isolation	isolation circuit breakers
	circuit breakers
	Optional:	Optional:
	High short circuit current	one disconnect switch
	rated panel with disconnect	replacing the power block,
	switch and no isolation circuit	compressor isolation circuit
	breakers	breakers
		Optional:
		High short circuit current
		rated panel with disconnect
		switch and compressor
		isolation circuit breakers

NOTE: Disconnect switches are molded case construction with lockable through-the-door handles. They can be used to remove the unit/circuit from the power system.

The individual compressor isolation circuit breakers for each circuit isolate the compressor and do not have through-the-door handles. They are operable only after the panel doors are opened.

The high short circuit rated panel means that a short circuit current up to the ratings shown below will be contained in the panel. There is a short period of time when the circuit breaker will short circuit before opening a circuit that can damage downstream components. In other words, the enclosure is stronger than a standard enclosure. It has a high interrupt rated disconnect switch.

The factory-mounted control power transformer is protected by fuses. Condenser fans are protected and isolated by circuit breakers.

Table 7: Interrupt Ratings (kAmps)

	Voltage	Standard Short Circuit	High Short Circuit
		Rated Panel	Rated Panel
	208-230V / 60Hz	10kA	100kA
	380V / 60Hz	10kA	65kA
	460V / 60Hz	10kA	65kA
	575V / 60Hz	5kA	25kA
	400V / 50Hz	10kA	65kA

Disconnecting means are addressed by Article 440 of the U.S.A. National Electrical Code (NEC), which requires “disconnecting means capable of disconnecting air conditioning and refrigerating equipment including motor-compressors,

and controllers from the circuit feeder.” Select and locate the disconnect switch per the NEC guidelines. Maximum

recommended fuse sizes are given in the electrical data tables of this catalog for help in sizing the disconnect.

Terminals are provided in a unit control panel for optional field hookup of the control circuit to a separate fused 115-volt power supply in lieu of the standard factory installed control transformer.

RapidRestore® Options

This option does not require field installation. Exception: Field supplied inputs are required in the case of a backup unit being started after the power interruption rather than restarting the primary unit. A field supplied control (normally a BAS) must turn off the Backup Chiller connection on the primary chiller and turn on the connection on the backup chiller at the time of switching. See the unit Field Wiring Diagram on page 60 for the Backup Unit connection point (terminals #61 and #62).

Economizer Components

The chiller may or may not have economizers depending on design capacity requirements. An economizer is a well-proven device to increase a refrigerant circuit’s capacity and efficiency.

Warm liquid from the condenser is fed into the economizer where it is cooled by flashing off liquid also from the condenser. The flash gas is piped to a compressor interstage point.

Lowering the liquid refrigerant temperature to the evaporator decreases its enthalpy (heat content) and results in a greater amount of heat absorption from the chilled water.

Figure 17: Economizer Components

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13

IOM 1202-2 • PATHFINDER® MODEL AWS CHILLERS

CHILLERS AWS MODEL ®PATHFINDER • 2-1202 IOM

14

com.DaikinApplied.www

							RANSDUCERSUCTION
		AWS PACKAGE CHILLER					T
		WITH ECONOMIZER
		331994701 REV. 0D
		SCHRADER
CONDENSER	AIR	VALVE
	FLOW	(HEADER)			CHECK		BUTTERFLY
ASSEMBLY						OIL PRESS.		VALVE
					VALVE
		DISCHARGE	DISCHARGE	SHUT-OFF		TRANSDUCER	(OPTIONAL)
		TUBING	TRANSDUCER	VALVE		WITH SCHRADER
						VALVE

BALL	CHARGING		OUTSIDE AIR	RELIEF
				VALVE
VALVE	VALVE	SCHRADER	TEMPERATURE
			(WAA)
		VALVE		DISCHARGE
				TEMP. SENSOR	F3/F4
					COMPRESSOR

LIQUID		AIR				BALL	SCHRADER	LIQUID		CHECK
		FLOW				VALVE	VALVE	INJECTION STRAINER	SOLENOID	VALVE
TUBING
								TUBING	VALVE
			ECONOMIZER FLASH GAS TO COMPRESSOR INTERSTAGE
SCHRADER	SCHRADER										SUCTION
		VALVE
VALVE
											TUBING
FILTER	SCHRADER SIGHT		SOLENOID							Note: Provide 20-mesh strainer
	VALVE
DRYER	CHARGING	GLASS	VALVE							at evaporator inlet
	VALVE
			TGE				WATER OUT			WATER IN
			EXPANSION					(WOE)	(WIE)
			VALVE
								TEMP. SENSOR	TEMP. SENSOR
		ECONOMIZER	SOLENOID	SCHRADER	EXPANSION CHARGING			DX EVAPORATOR		RELIEF	SUCTION
			VALVE
			(OPTIONAL)	VALVE	VALVE	VALVE				VALVE	TEMP. SENSOR

Shown Circuit One Circuit, Economizer with Schematic Piping 18: Figure

tartupS and nstallationI

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15

CHILLERS AWS MODEL ®PATHFINDER • 2-1202 IOM

CONDENSER

ASSEMBLY

BALL CHARGING

VALVE VALVE

SCHRADER

VALVE

SCHRADER

AIR

FLOW

VALVE

LIQUID

TUBING

FILTER CHARGING SIGHT SCHRADER SOLENOID DRYER VALVE GLASS VALVE VALVE

(OPTIONAL)

AWS PACKAGE CHILLER 331994701 REV. 0D

	SCHRADER
AIR	VALVE
	(HEADER)
FLOW
	DISCHARGE	DISCHARGE
	TUBING	TRANSDUCER	SHUT-OFF
			VALVE

	RANSDUCERSUCTION
OIL PRESS.	T
	BUTTERFLY
TRANSDUCER		VALVE
WITH SCHRADER	(OPTIONAL)
VALVE

	RELIEF
	VALVE
	DISCHARGE	F3/F4
OUTSIDE AIR	TEMP. SENSOR
TEMPERATURE		COMPRESSOR
(WAA)

LIQUID			SUCTION
INJECTION
TUBING			TUBING
BALL	SCHRADER	STRAINER	SOLENOID
VALVE	VALVE		VALVE

				Note: Provide 20-mesh strainer
		WATER OUT		at evaporator inlet
				WATER IN
		(WOE)		(WIE)
		TEMP. SENSOR	TEMP. SENSOR
EXPANSION	CHARGING	DX EVAPORATOR		RELIEF	SUCTION
VALVE	VALVE			VALVE	TEMP. SENSOR

Shown Circuit One Circuit, Economizer without Schematic Piping 19: Figure

tartupS and nstallationI

Lifting and Mounting Information

Lifting and Mounting Information

Figure 20: 10 Fan Non-VFD Models

5820
229.1
		4910
		193.3
		4791
		188.6	2100
			82.7	600
				23.6
				431
				17.0
M5	L3	M3	M1	L1

															BOX
	2225														CONTROL
	87.6
		100
		3.9
	190			M6	L4					M4			M2	L2	AWS 10 FAN DIM. DWG
	7.5
															330973501			0A
		AWS DIMENSIONAL DATA - WEIGHTS IN LBS.							LIFTING WEIGHT FOR EACH POINT LB				MOUNTING LOADS FOR EACH POINT LB
	UNIT SIZE	VOLTAGE	HZ.	STARTER	SHIPPING OPERATING COPPER # OF				L1	L2	L3	L4	M1	M2	M3	M4	M5		M6
					WEIGHT	WEIGHT	FIN ADD FANS
	AWS164CDS	400V - 50HZ		WYE DELTA	12535	12778			3843	3825	2439	2428	2670	2658	2255	2245	1478		1472
	AWS190CDS	380-575V - 60HZ SOLID STATE			12829	13072	1786	10	4015	3997	2414	2403	2805	2792	2324	2313	1422		1415
		208-575V - 60HZ		WYE DELTA	12535	12778			3843	3825	2439	2428	2670	2658	2255	2245	1478		1472
		AWS DIMENSIONAL DATA - WEIGHTS IN KG.							LIFTING WEIGHT FOR EACH POINT KG				MOUNTING LOADS FOR EACH POINT KG
	UNIT SIZE	VOLTAGE	HZ.	STARTER	SHIPPING OPERATING COPPER # OF				L1	L2	L3	L4	M1	M2	M3	M4	M5		M6
					WEIGHT	WEIGHT	FIN ADD FANS
	AWS164CDS	400V - 50HZ		WYE DELTA	5686	5796			1743	1735	1106	1101	1211	1206	1023	1018	670		668
	AWS190CDS	380-575V - 60HZ SOLID STATE			5819	5929	810	10	1821	1813	1095	1090	1272	1266	1054	1049	645		642
		208-575V - 60HZ		WYE DELTA	5686	5796			1743	1735	1106	1101	1211	1206	1023	1018	670		668

IOM 1202-2 • PATHFINDER® MODEL AWS CHILLERS

16

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Lifting and Mounting Information

Figure 21: 12 Fan Non-VFD Models

	AWS 12 FAN DIM. DWG	330973502 0A
5820
229.1	4910
	193.3
	4791
	188.6		2100
			82.7	600
				23.6
				431
				17.0
M5	L3	M3	M1	L1

2225

87.6

190

7.5

																	BOX
	100																CONTROL
	3.9
		M6		L4						M4				M2	L2
		AWS DIMENSIONAL DATA - WEIGHTS IN LBS.							LIFTING WEIGHT FOR EACH POINT LB				MOUNTING LOADS FOR EACH POINT LB
	UNIT SIZE	VOLTAGE	HZ.	STARTER	SHIPPING OPERATING COPPER # OF				L1	L2	L3	L4	M1	M2	M3	M4	M5	M6
					WEIGHT	WEIGHT	FIN ADD FANS
	AWS174CDH	400V - 50HZ		WYE DELTA	13174	13357			3823	3805	2779	2767	2598	2586	2314	2303	1782	1773
	AWS184CDS	400V - 50HZ		WYE DELTA	13290	13503			4154	3968	2643	2525	2876	2747	2431	2323	1599	1527
	AWS204CDS	400V - 50HZ		WYE DELTA	13789	14032			4283	4264	2627	2615	2982	2969	2488	2477	1562	1555
	AWS210CDH	380-575V - 60HZ SOLID STATE			13470	13653			3999	3981	2751	2739	2737	2724	2383	2373	1722	1714
		208-575V - 60HZ		WYE DELTA	13174	13357			3823	3805	2779	2767	2598	2586	2314	2303	1782	1773
		380-575V - 60HZ SOLID STATE			13575	13788	1786	12	4320	4126	2623	2506	3005	2871	2498	2387	1548	1479
	AWS210CDS	208-230V - 60HZ		WYE DELTA
		380-575V - 60HZ		WYE DELTA	13290	13503			4154	3968	2643	2525	2876	2747	2431	2323	1599	1527
		380-575V - 60HZ SOLID STATE			14092	14335			4459	4439	2603	2591	3121	3106	2558	2547	1505	1498
	AWS225CDS	208-230V - 60HZ		WYE DELTA
		380-575V - 60HZ		WYE DELTA	13789	14032			4283	4264	2627	2615	2982	2969	2488	2477	1562	1555
		AWS DIMENSIONAL DATA - WEIGHTS IN KG.							LIFTING WEIGHT FOR EACH POINT KG				MOUNTING LOADS FOR EACH POINT KG
	UNIT SIZE	VOLTAGE	HZ.	STARTER	SHIPPING OPERATING COPPER # OF				L1	L2	L3	L4	M1	M2	M3	M4	M5	M6
					WEIGHT	WEIGHT	FIN ADD FANS
	AWS174CDH	400V - 50HZ		WYE DELTA	5976	6059			1734	1726	1261	1255	1179	1173	1050	1045	808	804
	AWS184CDS	400V - 50HZ		WYE DELTA	6028	6125			1884	1800	1199	1145	1304	1246	1103	1054	725	693
	AWS204CDS	400V - 50HZ		WYE DELTA	6255	6365			1943	1934	1192	1186	1353	1347	1129	1123	708	705
	AWS210CDH	380-575V - 60HZ SOLID STATE			6110	6193			1814	1806	1248	1242	1241	1236	1081	1076	781	778
		208-575V - 60HZ		WYE DELTA	5976	6059			1734	1726	1261	1255	1179	1173	1050	1045	808	804
		380-575V - 60HZ SOLID STATE			6158	6254	810	12	1960	1872	1190	1137	1363	1302	1133	1083	702	671
	AWS210CDS	208-230V - 60HZ		WYE DELTA
		380-575V - 60HZ		WYE DELTA	6028	6125			1884	1800	1199	1145	1304	1246	1103	1054	725	693
		380-575V - 60HZ SOLID STATE			6392	6502			2023	2014	1181	1175	1416	1409	1160	1155	683	680
	AWS225CDS	208-230V - 60HZ		WYE DELTA
		380-575V - 60HZ		WYE DELTA	6255	6365			1943	1934	1192	1186	1353	1347	1129	1123	708	705

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17

IOM 1202-2 • PATHFINDER® MODEL AWS CHILLERS

Lifting and Mounting Information

Figure 22: 14 Fan Non-VFD Models

						431	17.0			CONTROLBOX
					600	23.6			L1			L2
									M1			M2
				2100	82.7
									M3			M4
			4791	188.6									AWS 14 FAN DIM. DWG	330973503 0A
		4910	193.3
									L3			L4
	6310	248.4							M5			M6
6720	264.6
									M7			M8
											100	3.9
							66	2.6		2225	87.6	190	7.5
IOM 1202-2 • PATHFINDER® MODEL AWS CHILLERS										18				www.DaikinApplied.com

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19

CHILLERS AWS MODEL ®PATHFINDER • 2-1202 IOM

	AWS 14 FAN DIM. DWG				330973503		0A
	AWS DIMENSIONAL DATA - WEIGHTS IN LBS.									LIFTING WEIGHT FOR EACH POINT LB					MOUNTING LOADS FOR EACH POINT LB
UNIT SIZE	VOLTAGE	HZ.	STARTER	SHIPPING		OPERATING		COPPER	# OF	L1	L2	L3	L4	M1	M2	M3	M4	M5	M6	M7		M8
				WEIGHT		WEIGHT		FIN ADD	FANS
AWS204CDH	400V 50HZ		WYE DELTA		14740	14863				3983	3770	3589	3398	2976	2818	2420	2291	1379	1305	860		814
AWS224-234CDS	400V 50HZ		WYE DELTA		14714	14887				4141	4122	3233	3218	3073	3059	2444	2433	1266	1260	679		676
AWS224CDH	400V 50HZ		WYE DELTA		15420	15523				4092	4092	3619	3619	3048	3048	2471	2471	1390	1390	852		852
	380-575V 60HZ		SOLID STATE		15042	15165				4168	3928	3576	3370	3103	2924	2503	2359	1380	1301	821		774
AWS230CDH	208-230V 60HZ		WYE DELTA
	380-575V 60HZ		WYE DELTA		14740	14863				3983	3770	3589	3398	2976	2818	2420	2291	1379	1305	860		814
								2084	14
	380-575V 60HZ		SOLID STATE		15015	15188				4313	4294	3212	3197	3190	3175	2519	2508	1264	1258	638		635
AWS250-260CDS	208-230V 60HZ		WYE DELTA
	380-575V 60HZ		WYE DELTA		14714	14887				4141	4122	3233	3218	3073	3059	2444	2433	1266	1260	679		676
	380-575V 60HZ		SOLID STATE		15722	15825				4277	4258	3601	3585	3175	3160	2554	2542	1391	1385	811		808
AWS250CDH	208-230V 60HZ		WYE DELTA
	380-575V 60HZ		WYE DELTA		15420	15523				4092	4092	3619	3619	3048	3048	2471	2471	1390	1390	852		852
	AWS DIMENSIONAL DATA - WEIGHTS IN KG.									LIFTING WEIGHT FOR EACH POINT KG					MOUNTING LOADS FOR EACH POINT LB
UNIT SIZE	VOLTAGE	HZ.	STARTER	SHIPPING		OPERATING		COPPER	# OF	L1	L2	L3	L4	M1	M2	M3	M4	M5	M6	M7		M8
				WEIGHT		WEIGHT		FIN ADD	FANS
AWS204CDH	400V 50HZ		WYE DELTA		6686	6742				1807	1710	1628	1541	1350	1278	1098	1039	625	592	390		369
AWS224-234CDS	400V 50HZ		WYE DELTA		6674	6753				1878	1870	1467	1460	1394	1387	1108	1103	574	571	308		306
AWS224CDH	400V 50HZ		WYE DELTA		6995	7041				1856	1856	1641	1641	1383	1383	1121	1121	631	631	386		386
	380-575V 60HZ		SOLID STATE		6823	6879				1891	1782	1622	1529	1407	1326	1135	1070	626	590	372		351
AWS230CDH	208-230V 60HZ		WYE DELTA
	380-575V 60HZ		WYE DELTA		6686	6742				1807	1710	1628	1541	1350	1278	1098	1039	625	592	390		369
								945	14
	380-575V 60HZ		SOLID STATE		6811	6889				1956	1948	1457	1450	1447	1440	1143	1138	573	571	290		288
AWS250-260CDS	208-230V 60HZ		WYE DELTA
	380-575V 60HZ		WYE DELTA		6674	6753				1878	1870	1467	1460	1394	1387	1108	1103	574	571	308		306
	380-575V 60HZ		SOLID STATE		7131	7178				1940	1931	1634	1626	1440	1433	1158	1153	631	628	368		366
AWS250CDH	208-230V 60HZ		WYE DELTA
	380-575V 60HZ		WYE DELTA		6995	7041				1856	1856	1641	1641	1383	1383	1121	1121	631	631	386		386

(continued) Models VFD-Non Fan 14 23: Figure

nformationI ountingM and iftingL

													Lifting and Mounting Information
Figure 24: 16 Fan Non-VFD Models
							431	17.0
										CONTROLBOX
						600	23.6		L1				L2
									M1				M2
					2100	82.7
				2381	93.7				M3				M4
													L4
									L3
0A			4791	188.6
330973504		4910	193.3
DWG									L5				L6
DIM.									M5				M6
AWS 16 FAN		6791 267.4
	7210	283.9											190	7.5
									L7
													L8
7620	300.0								M7		100	3.9	M8
							66		2.6	2225	87.6
IOM 1202-2 • PATHFINDER® MODEL AWS CHILLERS										20				www.DaikinApplied.com

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21

CHILLERS AWS MODEL ®PATHFINDER • 2-1202 IOM

							AWS 16 FAN DIM. DWG					330973504 0A
	AWS DIMENSIONAL DATA - WEIGHTS IN LBS.									LIFTING WEIGHT FOR EACH POINT LB									MOUNTING LOADS FOR EACH POINT LB
UNIT SIZE	VOLTAGE		HZ.	STARTER	SHIPPING	OPERATING	COPPER	# OF	L1	L2	L3	L4	L5	L6		L7	L8	M1	M2	M3	M4	M5	M6	M7	M8
					WEIGHT	WEIGHT	FIN ADD	FANS
AWS194CDP	400V - 50HZ			WYE DELTA	16057	16909			2648	2636	2256	2246	1772	1764		1370	1364	2813	2800	2477	2466	1849	1841	1335	1329
AWS240CDP	380-575V	- 60HZ		SOLID STATE	16358	17210			2766	2754	2325	2314	1779	1771		1327	1321	2926	2912	2554	2542	1857	1849	1287	1282
	208-575V	- 60HZ		WYE DELTA	16057	16909			2648	2636	2256	2246	1772	1764		1370	1364	2813	2800	2477	2466	1849	1841	1335	1329
AWS244-264CDH	400V - 50HZ			WYE DELTA	16793	17160			3048	3034	2467	2455	1749	1741		1153	1147	3103	3089	2642	2630	1780	1772	1074	1069
AWS264CDS	400V - 50HZ			WYE DELTA	16741	17188			3294	3176	2578	2486	1693	1632		958	924	3344	3224	2785	2685	1739	1677	883	851
	380-575V	- 60HZ		SOLID STATE	17094	17461			3158	3158	2529	2529	1752	1752		1108	1108	3206	3206	2711	2711	1786	1786	1028	1028
AWS280-300CDH	208-575V	- 60HZ		WYE DELTA			2372	16
	380-575V	- 60HZ		WYE DELTA	16793	17160			3048	3034	2467	2455	1749	1741		1153	1147	3103	3089	2642	2630	1780	1772	1074	1069
AWS284CDS	400V - 50HZ			WYE DELTA	17432	17869			3426	3426	2658	2658	1709	1709		922	922	3465	3465	2870	2870	1756	1756	843	843
AWS290CDS	380-575V	- 60HZ		SOLID STATE	17044	17491			3414	3292	2648	2553	1701	1640		915	882	3457	3333	2862	2760	1749	1686	837	807
	380-575V	- 60HZ		WYE DELTA	16741	17188			3294	3176	2578	2486	1693	1632		958	924	3344	3224	2785	2685	1739	1677	883	851
AWS310CDS	380-575V	- 60HZ		SOLID STATE	17724	18161			3547	3531	2730	2718	1721	1713		883	879	3580	3563	2950	2936	1769	1761	803	799
	380-575V	- 60HZ		WYE DELTA	17432	17869			3426	3426	2658	2658	1709	1709		922	922	3465	3465	2870	2870	1756	1756	843	843
	AWS DIMENSIONAL DATA - WEIGHTS IN KG.									LIFTING WEIGHT FOR EACH POINT KG									MOUNTING LOADS FOR EACH POINT KG
UNIT SIZE	VOLTAGE		HZ.	STARTER	SHIPPING	OPERATING	COPPER	# OF	L1	L2	L3	L4	L5	L6		L7	L8	M1	M2	M3	M4	M5	M6	M7	M8
					WEIGHT	WEIGHT	FIN ADD	FANS
AWS194CDP	400V - 50HZ			WYE DELTA	7283	7670			1201	1196	1023	1019	804	800		621	619	1276	1270	1124	1119	839	835	605	603
AWS240CDP	380-575V	- 60HZ		SOLID STATE	7420	7806			1255	1249	1055	1050	807	803		602	599	1327	1321	1158	1153	843	839	584	581
	208-575V	- 60HZ		WYE DELTA	7283	7670			1201	1196	1023	1019	804	800		621	619	1276	1270	1124	1119	839	835	605	603
AWS244-264CDH	400V - 50HZ			WYE DELTA	7617	7784			1382	1376	1119	1114	793	790		523	520	1407	1401	1199	1193	807	804	487	485
AWS264CDS	400V - 50HZ			WYE DELTA	7594	7796			1494	1441	1169	1127	768	740		435	419	1517	1462	1263	1218	789	761	401	386
	380-575V	- 60HZ		SOLID STATE	7754	7920			1432	1432	1147	1147	795	795		502	502	1454	1454	1230	1230	810	810	466	466
AWS280-300CDH	208-575V	- 60HZ		WYE DELTA			1076	16
	380-575V	- 60HZ		WYE DELTA	7617	7784			1382	1376	1119	1114	793	790		523	520	1407	1401	1199	1193	807	804	487	485
AWS284CDS	400V - 50HZ			WYE DELTA	7907	8105			1554	1554	1206	1206	775	775		418	418	1572	1572	1302	1302	796	796	383	383
AWS290CDS	380-575V	- 60HZ		SOLID STATE	7731	7934			1549	1493	1201	1158	771	744		415	400	1568	1512	1298	1252	793	765	380	366
	380-575V	- 60HZ		WYE DELTA	7594	7796			1494	1441	1169	1127	768	740		435	419	1517	1462	1263	1218	789	761	401	386
AWS310CDS	380-575V	- 60HZ		SOLID STATE	8039	8238			1609	1602	1239	1233	781	777		401	399	1624	1616	1338	1332	802	799	364	362
	380-575V	- 60HZ		WYE DELTA	7907	8105			1554	1554	1206	1206	775	775		418	418	1572	1572	1302	1302	796	796	383	383

(continued) Models VFD-Non Fan 16 25: Figure

nformationI ountingM and iftingL

															Lifting and Mounting Information
Figure 26: 18 Fan Non-VFD Models
							600	23.6
											CONTROLBOX
								431	17.0	L1				L2
										M1				M2
						2100	82.7
					2381	93.7				M3				M4
														L4
										L3
				4791	188.6
0A			4910	193.3
330973505										M5 L5				M6 L6
DIM. DWG		7484	294.6
AWS 18 FAN														190	7.5
	8110	319.3
										L7
														L8
8520	335.5
										M7		100	3.9	M8
								66	2.6		2225	87.6
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CHILLERS AWS MODEL ®PATHFINDER • 2-1202 IOM

			AWS 18 FAN DIM. DWG			330973505 0A
	AWS DIMENSIONAL DATA - WEIGHTS IN LBS.									LIFTING WEIGHT FOR EACH POINT LB								MOUNTING LOADS FOR EACH POINT LB
UNIT SIZE	VOLTAGE		HZ.	STARTER	SHIPPING	OPERATING	COPPER	# OF		L1	L2	L3	L4	L5	L6	L7	L8	M1	M2	M3	M4	M5	M6	M7	M8
					WEIGHT	WEIGHT	FIN ADD	FANS
AWS214CDP	400V - 50HZ			WYE DELTA	17527	18329				2826	2737	2476	2398	2043	1979	1559	1510	3009	2914	2702	2617	2127	2060	1473	1427
AWS244CDP	400V - 50HZ			WYE DELTA	19237	20420				3006	3006	2655	2655	2221	2221	1736	1736	3257	3257	2940	2940	2345	2345	1668	1668
	380-575V	- 60HZ		SOLID STATE	17829	18631				2944	2839	2550	2459	2063	1989	1519	1465	3121	3009	2784	2684	2151	2074	1430	1379
AWS265CDP	208-230V	- 60HZ		WYE DELTA			2679		18
	380-575V	- 60HZ		WYE DELTA	17527	18329				2826	2737	2476	2398	2043	1979	1559	1510	3009	2914	2702	2617	2127	2060	1473	1427
	380-575V	- 60HZ		SOLID STATE	19539	20722				3115	3115	2723	2723	2237	2237	1694	1694	3361	3361	3014	3014	2363	2363	1622	1622
AWS290CDP	208-230V	- 60HZ		WYE DELTA
	380-575V	- 60HZ		WYE DELTA	19237	20420				3006	3006	2655	2655	2221	2221	1736	1736	3257	3257	2940	2940	2345	2345	1668	1668
	AWS DIMENSIONAL DATA - WEIGHTS IN KG.									LIFTING WEIGHT FOR EACH POINT KG								MOUNTING LOADS FOR EACH POINT KG
UNIT SIZE	VOLTAGE		HZ.	SHIPPING	SHIPPING	OPERATING	COPPER	# OF		L1	L2	L3	L4	L5	L6	L7	L8	M1	M2	M3	M4	M5	M6	M7	M8
				WEIGHT	WEIGHT	WEIGHT	FIN ADD	FANS
AWS214CDP	400V - 50HZ			WYE DELTA	7950	8314				1282	1241	1123	1088	927	898	707	685	1365	1322	1226	1187	965	935	668	647
AWS244CDP	400V - 50HZ			WYE DELTA	8726	9262				1363	1363	1204	1204	1008	1008	788	788	1477	1477	1333	1333	1064	1064	757	757
	380-575V	- 60HZ		SOLID STATE	8087	8451				1336	1288	1157	1115	936	902	689	664	1416	1365	1263	1217	976	941	649	625
AWS265CDP	208-230V	- 60HZ		WYE DELTA			1215		18
	380-575V	- 60HZ		WYE DELTA	7950	8314				1282	1241	1123	1088	927	898	707	685	1365	1322	1226	1187	965	935	668	647
	380-575V	- 60HZ		SOLID STATE	8863	9399				1413	1413	1235	1235	1015	1015	769	769	1525	1525	1367	1367	1072	1072	736	736
AWS290CDP	208-230V	- 60HZ		WYE DELTA
	380-575V	- 60HZ		WYE DELTA	8726	9262				1363	1363	1204	1204	1008	1008	788	788	1477	1477	1333	1333	1064	1064	757	757

(continued) Models VFD-Non Fan 18 27: Figure

nformationI ountingM and iftingL

													Lifting and Mounting Information
Figure 28: 20 Fan Non-VFD Models
								431	17.0		CONTROLBOX
						600	23.6			L1			L2
										M1			M2
					2100	82.7
				2381	93.7					M3			M4
										L3			L4
0A			4910	193.3
330973506										M5			M6
DWG			5961 234.7							L5
DIM.													L6
FAN
AWS 20
		8384	330.1					66		2.6		190	7.5
	9010	354.7
										L7
9421	370.9												L8
										M7		100	3.9
													M8
											2225	87.6
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CHILLERS AWS MODEL ®PATHFINDER • 2-1202 IOM

						AWS 20 FAN DIM. DWG				330973506				0A
	AWS DIMENSIONAL DATA - WEIGHTS IN LBS.										LIFTING WEIGHT FOR EACH POINT LB										MOUNTING LOADS FOR EACH POINT LB
UNIT SIZE	VOLTAGE		HZ.	STARTER	SHIPPING		OPERATING	COPPER	# OF		L1	L2		L3		L4	L5	L6	L7	L8	M1	M2	M3	M4	M5	M6	M7	M8
					WEIGHT		WEIGHT	FIN ADD	FANS
AWS264-284CDP	400V - 50HZ			WYE DELTA	20124		21257				3278	3278	2893		2893		2185	2185	1706	1706	3223	3223	2984	2984	2537	2537	1884	1884
AWS294CDH	400V - 50HZ			WYE DELTA	19139		19461				3463	3338	2944		2838		1991	1920	1347	1298	3256	3139	2927	2822	2312	2229	1414	1363
	380-575V	- 60HZ		SOLID STATE	20426		21559				3385	3385	2965		2965		2193	2193	1671	1671	3321	3321	3057	3057	2562	2562	1839	1839
AWS310-330CDP	208-230V	- 60HZ		WYE DELTA
	380-575V	- 60HZ		WYE DELTA	20124		21257				3278	3278	2893		2893		2185	2185	1706	1706	3223	3223	2984	2984	2537	2537	1884	1884
AWS314CDH	400V - 50HZ			WYE DELTA	19846		20143				3592	3592	3031		3031		1999	1999	1301	1301	3367	3367	3009	3009	2338	2338	1358	1358
AWS314-334CDS	400V - 50HZ			WYE DELTA	19164		19501	2968		20	3558	3558	2970		2970		1892	1892	1162	1162	3337	3337	2958	2958	2247	2247	1209	1209
AWS330CDH	460-575V	- 60HZ		SOLID STATE	19442		19764				3573	3445	3018		2910		1998	1927	1308	1262	3355	3235	3001	2893	2337	2253	1369	1320
	380-575V	- 60HZ		WYE DELTA	19139		19461				3463	3338	2944		2838		1991	1920	1347	1298	3256	3139	2927	2822	2312	2229	1414	1363
AWS350-375CDS	460-575V	- 60HZ		SOLID STATE	19466		19803				3666	3666	3043		3043		1899	1899	1124	1124	3434	3434	3030	3030	2272	2272	1166	1166
	380-575V	- 60HZ		WYE DELTA	19164		19501				3558	3558	2970		2970		1892	1892	1162	1162	3337	3337	2958	2958	2247	2247	1209	1209
AWS350CDH	460-575V	- 60HZ		SOLID STATE	20147		20444				3699	3699	3102		3102		2007	2007	1266	1266	3462	3462	3080	3080	2363	2363	1317	1317
	380-575V	- 60HZ		WYE DELTA	19846		20143				3592	3592	3031		3031		1999	1999	1301	1301	3367	3367	3009	3009	2338	2338	1358	1358
	AWS DIMENSIONAL DATA - WEIGHTS IN KG.										LIFTING WEIGHT FOR EACH POINT KG										MOUNTING LOADS FOR EACH POINT KG
UNIT SIZE	VOLTAGE		HZ.	STARTER	SHIPPING		OPERATING	COPPER	# OF		L1	L2		L3		L4	L5	L6	L7	L8	M1	M2	M3	M4	M5	M6	M7	M8
					WEIGHT		WEIGHT	FIN ADD	FANS
AWS264-284CDP	400V - 50HZ			WYE DELTA	9128		9642				1487	1487	1312		1312		991	991	774	774	1462	1462	1354	1354	1151	1151	855	855
AWS294CDH	400V - 50HZ			WYE DELTA	8682		8827				1571	1514	1335		1287		903	871	611	589	1477	1424	1328	1280	1049	1011	641	618
	380-575V	- 60HZ		SOLID STATE	9265		9779				1535	1535	1345		1345		995	995	758	758	1506	1506	1387	1387	1162	1162	834	834
AWS310-330CDP	208-230V	- 60HZ		WYE DELTA
	380-575V	- 60HZ		WYE DELTA	9128		9642				1487	1487	1312		1312		991	991	774	774	1462	1462	1354	1354	1151	1151	855	855
AWS314CDH	400V - 50HZ			WYE DELTA	9002		9137				1630	1630	1375		1375		907	907	590	590	1527	1527	1365	1365	1060	1060	616	616
AWS314-334CDS	400V - 50HZ			WYE DELTA	8693		8846	1346		20	1614	1614	1347		1347		858	858	527	527	1514	1514	1342	1342	1019	1019	549	549
AWS330CDH	460-575V	- 60HZ		SOLID STATE	8819		8965				1621	1563	1369		1320		906	874	594	572	1522	1467	1361	1312	1060	1022	621	599
	380-575V	- 60HZ		WYE DELTA	8682		8827				1571	1514	1335		1287		903	871	611	589	1477	1424	1328	1280	1049	1011	641	618
AWS350-375CDS	460-575V	- 60HZ		SOLID STATE	8830		8983				1663	1663	1380		1380		861	861	510	510	1558	1558	1374	1374	1030	1030	529	529
	380-575V	- 60HZ		WYE DELTA	8693		8846				1614	1614	1347		1347		858	858	527	527	1514	1514	1342	1342	1019	1019	549	549
AWS350CDH	460-575V	- 60HZ		SOLID STATE	9139		9273				1678	1678	1407		1407		910	910	574	574	1571	1571	1397	1397	1072	1072	597	597
	380-575V	- 60HZ		WYE DELTA	9002		9137				1630	1630	1375		1375		907	907	590	590	1527	1527	1365	1365	1060	1060	616	616

(continued) Models VFD-Non Fan 20 29: Figure

nformationI ountingM and iftingL

													Lifting and Mounting Information
Figure 30: 22 Fan Non-VFD Models
								431	17.0
										CONTROLBOX
							600	23.6	L1			L2
									M1			M2
						2100	82.7
					2381	93.7			M3			M4
												L4
									L3
				5401	212.6
0A			6000	236.2
330973507									L5			L6
DWG									M5			M6
22 FAN DIM.		8384	330.1
AWS
	9110	358.7
									L7			L8
									M7			M8
10720	422.0											190	7.5
								66	2.6		100	3.9
										2225	87.6
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CHILLERS AWS MODEL ®PATHFINDER • 2-1202 IOM

			AWS 22 FAN DIM. DWG				330973507 0A
	AWS DIMENSIONAL DATA - WEIGHTS IN LBS.										LIFTING WEIGHT FOR EACH POINT LB								MOUNTING LOADS FOR EACH POINT LB
UNIT SIZE	VOLTAGE	HZ.	STARTER	SHIPPING	OPERATING	COPPER		# OF	L1		L2	L3	L4	L5	L6	L7	L8	M1	M2	M3	M4	M5	M6	M7	M8
				WEIGHT	WEIGHT		FIN ADD	FANS
AWS314CDP	400V - 50HZ		WYE DELTA	22264	23357				3162		3063	2987	2893	2715	2629	2446	2369	3577	3465	3339	3234	2721	2635	2228	2157
AWS344CDH	400V - 50HZ		WYE DELTA	21312	21563				3266		3251	2953	2940	2469	2458	1991	1982	3498	3482	3188	3174	2382	2371	1738	1730
AWS365CDP	460-575V - 60HZ		SOLID STATE	22566	23659		3256	22	3271		3168	3058	2962	2730	2644	2405	2329	3682	3566	3418	3311	2733	2647	2186	2117
	380-575V - 60HZ		WYE DELTA	22264	23357				3162		3063	2987	2893	2715	2629	2446	2369	3577	3465	3339	3234	2721	2635	2228	2157
AWS390CDH	460-575V - 60HZ		SOLID STATE	21613	21864				3371		3356	3023	3009	2485	2473	1952	1944	3598	3581	3263	3249	2394	2384	1701	1694
	380-575V - 60HZ		WYE DELTA	21312	21563				3266		3251	2953	2940	2469	2458	1991	1982	3498	3482	3188	3174	2382	2371	1738	1730
	AWS DIMENSIONAL DATA - WEIGHTS IN KG.										LIFTING WEIGHT FOR EACH POINT KG								MOUNTING LOADS FOR EACH POINT KG
UNIT SIZE	VOLTAGE	HZ.	STARTER	SHIPPING	OPERATING	COPPER		# OF	L1		L2	L3	L4	L5	L6	L7	L8	M1	M2	M3	M4	M5	M6	M7	M8
				WEIGHT	WEIGHT		FIN ADD	FANS
AWS314CDP	400V - 50HZ		WYE DELTA	10099	10595				1434		1389	1355	1312	1231	1193	1109	1075	1623	1572	1515	1467	1234	1195	1010	979
AWS344CDH	400V - 50HZ		WYE DELTA	9667	9781				1481		1475	1340	1334	1120	1115	903	899	1587	1580	1446	1439	1080	1075	789	785
AWS365CDP	460-575V - 60HZ		SOLID STATE	10236	10732		1477	22	1484		1437	1387	1344	1238	1199	1091	1056	1670	1618	1550	1502	1240	1201	992	960
	380-575V - 60HZ		WYE DELTA	10099	10595				1434		1389	1355	1312	1231	1193	1109	1075	1623	1572	1515	1467	1234	1195	1010	979
AWS390CDH	460-575V - 60HZ		SOLID STATE	9804	9917				1529		1522	1371	1365	1127	1122	886	882	1632	1624	1480	1474	1086	1081	772	768
	380-575V - 60HZ		WYE DELTA	9667	9781				1481		1475	1340	1334	1120	1115	903	899	1587	1580	1446	1439	1080	1075	789	785

(continued) Models VFD-Non Fan 22 31: Figure

nformationI ountingM and iftingL

														Lifting and Mounting Information
Figure 32: 24 Fan 2-Circuit Non-VFD Models
											CONTROLBOX
							600	23.6	431	17.0	L1		L2
											M1		M2
						2100	82.7
					2381	93.7					M3		M4
											L3		L4
				5401	212.6
			5949	234.2										0A
											M5 L5		M6 L6	330973508
			8147 320.8											DIM. DWG
														AWS 24 FAN
											M7		M8
		9962	392.2
	10499	413.4
											L7		L8
											M9		M10
11620	457.5											100	3.9
										66	2.6
													190	7.5
											2225	87.6
IOM 1202-2 • PATHFINDER® MODEL AWS CHILLERS												28		www.DaikinApplied.com