Daikin Navigator WWV Owner's manual

LEARN MORE AT DAIKINAPPLIED.COM
FEBRUARY 2024
NAVIGATOR®WWV/TWV
WATER-COOLED SCREW CHILLERS
IOM 1264-4
INSTALLATION, OPERATION & MAINTENANCE
• MODEL WWV/TWV
• 150 TO 300 TONS
• R-134a & R-513A REFRIGERANT
©2024 DAIKIN APPLIED | [phone]

NAVIGATOR WWV/TWVDAIKIN APPLIED 2
TABLE OF CONTENTS
Introduction..................................3
Hazard Identication ..........................3
General Description ..........................4
Installation...................................5
Nameplates .................................5
Inspection ..................................5
Unit Placement ..............................5
Lifting Guidance .............................6
Transit and Temporary Storage..................7
Long Term Storage ...........................7
Heat Exchanger Water Piping ...................8
Relief Valves ...............................11
Retrot Knockdown ..........................13
Templier...................................18
Source Water Piping .........................18
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Control Circuit ..............................20
Use with On-Site Generators ..................20
Physical Data ...............................23
Operation...................................25
Control System Architecture ...................25
Operator Responsibilities .....................25
Operator Schools ...........................25
MicroTech Unit Controller Inputs/Outputs .........26
Set Points .................................27
Circuit Level Set Points .......................30
Unit Function ...............................30
Unit Enable ................................31
Unit Mode Selection .........................31
Unit Status.................................32
Evaporator Pump Control .....................32
Condenser Pump Control .....................33
Cooling Tower Control ........................34
Leaving Water Temp (LWT) Target ..............35
Unit Capacity Limits .........................36
RapidRestore Option.........................36
Circuit Functions ............................37
Circuit Status...............................38
Compressor Control .........................38
Evaporator EXV Control ......................39
Circuit Capacity Overrides ....................40
Alarms ....................................40
Clearing Alarms/Faults .......................41
Unit Alarms ................................42
Circuit Alarms ..............................44
Events ....................................48
Unit Controller Operation .....................50
Maintenance ................................52
Pre-Startup ................................52
Flow Switch Installation and Calibration ..........52
Mounting ..................................52
Startup....................................56
Temporary Shutdown ........................56
Startup After Temporary Shutdown ..............56
Extended (Seasonal) Shutdown ................56
Startup After Extended (Seasonal) Shutdown......56
General Maintenance ........................56
Vibration Monitoring (Optional) .................57
Lubrication.................................57
Electrical Terminals ..........................58
Liquid Line Sight Glass .......................58
Appendix ...................................60
Limited Product Warranty .....................60
Pre-Start Checklist ..........................61
©2024 Daikin Applied, Minneapolis, MN. All rights reserved throughout the world.This document contains the most current product information as of this
printing. Daikin Applied Americas Inc. has the right to change the information, design, and construction of the product represented within the document
without prior notice. For the most up-to-date product information, please go to www.DaikinApplied.com.
™® MicroTech, Navigator, SiteLine, VVR, and Daikin Applied are trademarks or registered trademarks of Daikin Applied Americas Inc. The following
are trademarks or registered trademarks of their respective companies: BACnet from American Society of Heating, Refrigerating and Air-Conditioning
Engineers, Inc.; Echelon, LonWorks, LonMark, and LonTalk from Echelon Corporation; Modbus from Schneider Electric; and Windows from Microsoft
Corporation.

3
IOM 1264-4 WWW.DAIKINAPPLIED.COM
INTRODuCTION
Introduction
This manual provides installation, operation, and maintenance
information for Daikin Applied NAVIGATOR WWV/TWV with a
MicroTech® unit controller.
NOTE: Installation and maintenance are to be performed only
by licensed, if required by local codes and regulations,
or qualied personnel who are familiar with local codes
and regulations and are experienced with this type of
equipment.
DANGER
LOCKOUT/TAGOUT all power sources prior to service,
pressurizing, de-pressuring, or powering down the unit. Failure
to follow this warning exactly can result in serious injury or death.
Disconnect electrical power before servicing the equipment.
More than one disconnect may be required to denergize the unit.
Be sure to read and understand the installation, operation, and
service instructions within this manual.
WARNING
Electric shock hazard. Improper handling of this equipment can
cause personal injury or equipment damage. This equipment
must be properly grounded. Connections to and service of the
MicroTech control panel must be performed only by personnel
that are knowledgeable in the operation of the equipment being
controlled.
WARNING
Polyolester Oil, commonly known as POE oil is a synthetic oil
used in many refrigeration systems, and may be present in this
Daikin Applied product. POE oil, if ever in contact with PVC/
CPVC, will coat the inside wall of PVC/CPVC pipe causing
environmental stress fractures. Although there is no PVC/CPVC
piping in this product, please keep this in mind when selecting
piping materials for your application, as system failure and
property damage could result. Refer to the pipe manufacturer’s
recommendations to determine suitable applications of the pipe.
CAUTION
Static sensitive components. A static discharge while handling
electronic circuit boards can cause damage to the components.
Discharge any static electrical charge by touching the bare metal
inside the control panel before performing any service work.
Never unplug any cables, circuit board terminal blocks, or power
plugs while power is applied to the panel.
Hazard Identication
DANGER
Danger indicates a hazardous situation, which will result in death
or serious injury if not avoided.
WARNING
Warning indicates a potentially hazardous situations, which can
result in property damage, personal injury, or death if not avoided.
CAUTION
Caution indicates a potentially hazardous situations, which can
result in minor injury or equipment damage if not avoided.
NOTICE
Notice indicates practices not related to physical injury.
NOTE: Indicates important details or clarifying statements for
information presented.

INTRODuCTION
NAVIGATOR WWV/TWVDAIKIN APPLIED 4
General Description
Daikin Applied Navigator® model WWV chillers are complete,
self-contained, automatically controlled, liquid-chilling units
featuring variable speed screw compressors. All model WWV
chillers are equipped with a single cooling circuit and single
compressor.
Navigator chillers are designed for indoor installation only.
The chillers use refrigerant R-134a or R-513A, with no ozone
depletion level.
NOTICE
Indoor installations must be in a structure with a permanent oor
and roof. The unit must be enclosed by walls for protection from
weather conditions.
The WWV is made up of a high e󰀩ciency, new variable volume
ratio (VVR®) series single screw compressor, ooded shell
and tube evaporator, and a shell and tube condenser. The
compressor is designed to operate in a very wide operating range
and ensure the best possible e󰀩ciency in each working condition.
In this regard, a sophisticated device dynamically manages the
VVR. This system ensures the optimum position of the discharge
ports as a function of the operating compression ratio, choosing
one among the four available positions.
All the described components are managed by an innovative
microprocessor control system that optimizes operations by
monitoring all the machine operating parameters. A diagnostic
system helps the operator in identifying alarm and fault causes.
Only normal eld connections such as water piping, electric
power, and control interlocks are required, thereby simplifying
installation and increasing reliability. Necessary equipment
protection and operating controls are included.
All Daikin Applied screw chillers must be commissioned by
a Daikin Applied service technician or an authorized service
provider. Failure to follow this startup procedure can a󰀨ect the
equipment warranty.
The standard limited warranty on this equipment covers parts that
prove defective in material or workmanship. Specic details of
this warranty can be found in the warranty statement at the back
of this manual.
Templier models
Templier® units are designed to operate over a large range
of temperatures so as to have wide application possibilities. In
addition to the standard cooling mode, Templier models have a
heating mode to control the condenser leaving water temperature
and a higher max condenser leaving water temperature. See
page 18 for more information.
Nomenclature
No. Description
1W = Water-cooled
T = Templier
2W = World
3V = Variable Speed Chiller
4Compressor Size
5 Design Vintage
6Circuit Conguration

5
IOM 1264-4 WWW.DAIKINAPPLIED.COM
INSTALLATION
Installation
Operating Limits
Table 1: WWV Operating/Standby Limits
Operating/Standby Limit Temperature
Maximum mechanical room ambient tem-
perature during chiller operation
113°F (45°C)
Maximum mechanical room ambient
temperature during chiller storage - with
maximum non-condensable relative hu-
midity of 95%
122°F (50°C)
Evaporator outlet uid temperature setpoi-
int range - Cool Mode
25.0°F (-3.9°C) to 77°F
(25°C)
Evaporator outlet uid temperature requir-
ing glycol
< 40°F (4.4°C)
Maximum uid temperature in evaporator
for startup
109.4°F (43°C)
Range of evaporator and condenser uid
temperature change across vessels
Condenser Single Pass
and Evaporator 2 Pass:
7.2°F (-13.8°C) to
14.4°F (-9.8°C)
Condenser 2 Pass:
10°F (-12.2°C) to 40°F
(4.4°C)
NOTE:
Contact a Daikin Applied representative for performance at specic
operating conditions, as some limits depend on unit conguration
Nameplates
The unit nameplate is located on the exterior of the Unit Power
Panel. Both the Model No. and Serial No. are located on the unit
nameplate; the Serial No. is unique to the unit. These numbers
should be used to identify the unit for service, parts, or warranty
questions. This plate also has the unit refrigerant charge and
electrical ratings. Evaporator data plate is under insulation and
contains the serial number. Compressor nameplate is located on
each compressor and gives pertinent electrical information.
WARNING
Installation is to be performed by qualied personnel who are
familiar with local codes and regulations.
CAUTION
When around sharp edges, wear appropriate Personal Protective
Equipment (PPE), such as gloves, protective clothing, foot wear,
eye protection etc. to prevent personal injury.
Inspection
Check all items carefully against the bill of lading. Inspect all units
for damage upon arrival. Report shipping damage and le a claim
with the carrier. Check the unit nameplate before unloading,
making certain it agrees with the power supply available. Daikin
Applied is not responsible for physical damage after the unit
leaves the factory.
Unit Placement
NOTICE
Navigator chillers are designed for indoor installation only.
Indoor installations must be in a structure with a permanent oor
and roof. The unit must be enclosed by walls for protection from
weather conditions.
The unit must be mounted on a level cement or steel base,
suitable to support the overall weight of the complete machine
in operation, and must be positioned so as to provide space for
maintenance at one end of the unit, to allow the cleaning and/
or the removal of the evaporator and the condenser tubes. The
condenser and evaporator tubes are expanded inside the tube
sheets to allow replacement, if necessary.
The machine position should be designed to ensure access to all
the safety and control devices. Never cover the safety devices
(safety valves, pressure switches). The safety valves must be
connected externally.
These units include the installation of safety valves for each
exchanger, installed on an exchange tap, which always maintains
an active valve. Thus, safety valves must be connected outside
of the equipment room.
Mounting Hole Access
After positioning, the shipping rails should be removed and the
machine must be rmly anchored to the ground or foreseen metal
structure to support the machine. In this regard, 0.87 in (22 mm)
diameter holes are included on the unit supports for securing
mounting bolts, etc. Mounting location dimensions are given in
Dimensional Drawings beginning on page 22. When mounted,
the base of the unit must be level to within ± ½ inch (12.7 mm)
across the length and width of the unit.
Service Access
The control panels are located on the front of the chiller and
require a minimum of four feet of clearance in front of the panels.
DANGER
Disconnect, lockout and tag all electrical power to the unit before
servicing compressors and/or recovering refrigerant. Failure to
do so can cause bodily injury or death.
Clearance Requirements
The unit must be placed in an area that allows for adequate
clearance around the unit. Doors and removable wall sections
can be utilized to meet these clearance requirements. There
must be a minimum of 3 to 4-feet clearance above the top of the
chiller. The U.S. National Electric Code (NEC) or local codes can
require more clearance in and around electrical components and
must be checked for compliance.

INSTALLATION
NAVIGATOR WWV/TWVDAIKIN APPLIED 6
Lifting Guidance
Daikin Applied equipment is designed to withstand the loads of
the lifting and rigging process resulting from ASME Standard
P30.1 - Planning for Load Handling Activities or equivalent.
Lifting guidance is intended for installations of newly delivered
equipment. If moving previously installed equipment for re-
location or disposal, consideration should be given to unit
condition. Equipment should also be drained as unit weight and
center of gravity values do not reect the addition of water for
lifting.
DANGER
Improper rigging, lifting, or moving of a unit can result in unit
damage, property damage, severe personal injury, or death.
See the as-designed, certied dimensioned drawings included
in the job submittal for the weights and center of gravity of the
unit. If the drawings are not available, consult the local Daikin
Applied sales o󰀩ce for assistance.
Installation is to be performed only by qualied personnel who
are familiar with local codes and regulations, and experienced
with this type of equipment. Lifting equipment and mechanisms
must be determined by the Lifting Director per the current version
of ASME Standard P30.1 or equivalent and must be suited for the
load capacity. Daikin Applied is not a licensed nor certied rigging
specialist. Therefore it is the customer’s responsibility to consult a
certied rigging contractor to rig, lift, and move components and
subcomponents properly and safely as needed.
CAUTION
Forklifts may not be used to lift or move Navigator units as the
method may result in unit damage.
CAUTION
When around sharp edges, wear appropriate Personal Protective
Equipment (PPE), such as gloves, protective clothing, foot wear,
eye protection, etc. to prevent personal injury.
Lifting Brackets
Lifting bracket designs vary from product to product. Rules of
engagement with the lifting brackets are the same regardless of
the bracket type. For Navigator units, a typical lifting bracket with
2ʺ (51 mm) diameter holes found on the sides of the unit base
are illustrated in Figure 1. See the as-designed certied drawings
for specic lifting points on this product model.
Engagement with each bracket is to be as close to vertical as
possible. The maximum allowable lift angle from the vertical is
30° as shown in Figure 2. If the lift angle shifts beyond 30° from
vertical on any of the lift points, the lift shall not proceed until a
plan and rigging can be secured that will correct the angle of lift.
WARNING
The lifting angle must not go beyond 30 degrees from vertical or
the unit can become unstable which may result in unit damage,
property damage, severe personal injury, or death.
Figure 1: Illustration of Lifting Bracket and Allowed Angle for
Lifting
Figure 2: Illustration of Allowed Angle Label
Lifting Equipment
Lifting equipment is supplied by the user or their designate.
This is typically selected around the unit certied information
of the equipment to be lifted and the available lifting equipment
planned to be at the site where the lift is to take place. It is the
responsibility of the Lifting Director to follow a standard practice
of lift planning and equipment selection, like that found in the
ASME P30 series of standards. Lifting plan and equipment must
ensure that the only contact with the unit is at the lifting brackets.
Straps, chains or spreader bars that are likely to be used shall
not come in contact with the unit.

7
IOM 1264-4 WWW.DAIKINAPPLIED.COM
INSTALLATION
CAUTION
Lifting mechanisms must not make contact with the unit beyond
the lifting bracket. Extreme care must be used when rigging the
unit to prevent damage to the control panels, unit handles, unit
piping, and unit frame.
Lifting Points
Lifting points are predetermined by design. When lifting, all
factory installed lifting brackets must be used. Figure 3 illustrates
typical 4 point lifting conguration, with four lifting points on each
side of the unit. The unit must remain level throughout the entire
lifting event. Level is dened as one end being no more than
0.25” per foot of unit length to the opposite end.
WARNING
Be aware that the center of gravity may not necessarily be in the
geometric center of the unit. No additional items can be added
to a lift with the unit as it may a󰀨ect the center of gravity and
cause unit damage, property damage, severe personal injury, or
death. Refer to as-designed, certied drawings for weight, center
of gravity location and details specic to unit conguration.
Figure 3: Lifting Points Locations
Transit and Temporary Storage
If the unit is stored for an intermediate period before installation
or moved to a di󰀨erent location, take these additional
precautions:
1. Support the unit well along the length of the base rail.
2. Level the unit (no twists or uneven ground surface).
3. Provide proper drainage around the unit to prevent ooding
of the equipment.
4. Provide adequate protection from vandalism, mechanical
contact, etc.
5. Securely close the doors and lock the handles.
6. Long term storage in humid environments may cause
condensate corrosion on steel surfaces. Consider adding a
desiccant material to alleviate corrosion concerns.
When the unit is being tied down for transit, the maximum
allowable attachment angle from the vertical is 30 degrees in
the opposite direction of lifting in Figure 2. Shimming of the unit
under the lifting brackets or tie-down points must be used to
ensure even contact along the length of the base rail.
Long Term Storage
This information applies to new units being stored waiting
for startup or to existing units that may be inoperative for an
extended period of time.
The chiller must be stored in a dry location and protected from
any damage or sources of corrosion. A Daikin Applied service
representative must perform an inspection and leak test of the
unit on minimum quarterly schedule, to be paid by the owner
or contractor. Daikin Applied will not be responsible for any
refrigerant loss during the storage time or for repairs to the
unit during the period of storage, or while moving the unit from
the original location to a storage facility and back to any new
installation location. If there is concern about the possibilities of
damage and loss of charge during storage, the customer can
have the charge removed and stored in recovery cylinders.
CAUTION
If the temperature of where the chiller is located is expected
to exceed 122°F (50°C), then the refrigerant must be removed.
Should it be necessary to store the unit prior to installation, it is
necessary to observe some precautions.
• Do not remove the protective plastic
• Do not leave the unit exposed to the elements
• Do not expose the unit to direct sunlight
• Do not use the machine near a heat source and/or open
ame
• Keep in places where room temperature is between +
41°F (5°C) to 122°F (50°C) (room temperature over the
maximum limit may trigger the relief valve resulting in loss
of refrigerant)
For additional tasks required, contact a Daikin Applied service
representative.

INSTALLATION
NAVIGATOR WWV/TWVDAIKIN APPLIED 8
Heat Exchanger Water Piping
Figure 4: Typical Piping, Shell and Tube Evaporator
No. Component
1Gate Valve (2)
2Vibration Eliminators (2)
3Temp. Sensor Wells (2)
4 Valved Pressure Gauge
5Balancing Valve
6Water Strainer
7Relief Pipe Plug
Be sure that water inlet and outlet connections match certied
drawings and nozzle markings.
Field installed water piping to the chiller must include:
• air vents at the high points.
• a cleanable water strainer upstream of the evaporator and
condenser inlet connections.
• a ow proving device for both the evaporator and condenser
to prevent freeze up. Flow switches, thermal dispersion
switches, or Delta-P switches can be used. Note that
thermal dispersion ow switches are factory installed as
standard. Additional ow switches can be used only if they
are connected in series with the ones already provided.
• su󰀩cient shuto󰀨 valves to allow vessel isolation. The chiller
must be capable of draining the water from the evaporator
or condenser without draining the complete system.
• matching mechanical connections. All evaporators and
condensers have OGS-type grooved water connections
(adhering to Standard AWWA C606) or optional ange
connections. PVC piping should not be used.
• water pressure gauge connection taps and gauges at the
inlet and outlet connections of both vessels for measuring
water pressure drop.
WARNING
Polyolester Oil, commonly known as POE oil is a synthetic oil
used in many refrigeration systems, and is present in this Daikin
Applied product. POE oil, if ever in contact with PVC/CPVC, will
coat the inside wall of PVC/CPVC pipe causing environmental
stress fractures. Although there is no PVC/CPVC piping in this
product, please keep this in mind when selecting piping materials
for your application, as system failure and property damage
could result. Refer to the pipe manufacturer’s recommendations
to determine suitable applications of the pipe.
It is recommended that eld installed water piping to the chiller
include:
• temperature sensors at the inlet and outlet connections of
both vessels.

9
IOM 1264-4 WWW.DAIKINAPPLIED.COM
INSTALLATION
CAUTION
When common piping is used for both building heating and
cooling modes, care must be taken to provide that water
owing through the evaporator cannot exceed 109.4°F (43°C).
Water this hot can damage controls or cause the relief valve to
discharge refrigerant.
Piping must be supported to eliminate weight and strain on the
ttings and connections. Chilled water piping must be adequately
insulated.
Inlet Strainer Guidelines
An inlet water strainer must be installed in the chilled water piping
before the evaporator inlet. Two paths are available to meet this
requirement:
1. A eld-installed kit shipped loose with the unit that consists of:
• Y-type area strainer with 304 stainless steel perforated
basket, groove pipe connections and strainer cap
• Extension pipe with two Schrader ttings that can be used
for a pressure gauge and thermal dispersion ow switch.
The pipe provides su󰀩cient clearance from the evaporator
for strainer basket removal
• ½-inch blowdown valve
• Two grooved clamps
2. A eld-supplied strainer that meets specication and
installation requirements of this manual on www.DaikinApplied.
com.
Inlet and outlet connections are clearly marked on the unit and
also appear on the dimension drawings. Drain connections
should be provided at all low points in the system to permit
complete drainage. Air vents should be located at the high points
in the system to purge out air. A vent connection, located on top
of the evaporator vessel, permits the purging of air out of the
evaporator. Air purged from the water system prior to unit start-up
provides adequate ow through the vessel and prevents safety
cutouts on the freeze protection. System pressure should be
maintained by using a properly sized expansion tank.
Pressure gauges should be installed in the inlet and outlet water
lines to the evaporator. Pressure drop through the evaporator
should be measured to calculate proper gpm (L/s) as specied in
the Pressure Drop tables.
Source water piping may have to be insulated (depending on its
temperature) to reduce heat loss and prevent condensation if
cold water is used. If cooling tower water is used, insulation may
not be necessary. Complete unit and system leak tests should
be performed prior to insulating the water piping. Insulation with
a vapor barrier is recommended. If the vessel is insulated, the
vent and drain connections must extend beyond the proposed
insulation thickness for accessibility. If the unit operates year-
round, or if the system is not drained for the winter, the chilled
water piping exposed to outdoor ambient should be protected
against freezing by wrapping the lines with a heater cable.
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.
A storage tank may have to be added to the system to reach the
recommended system volume. Refer to AG 31-003 for method of
calculating “Minimum Chilled Water Volume”.
The water quality provided by the owner/occupant/operator/user
to a chiller system should minimize corrosion, scale buildup,
erosion, and biological growth for optimum e󰀩ciency of HVAC
equipment without creating a hazard to operating personnel or
the environment. Strainers must be used to protect the chiller
systems from water-borne debris. Daikin Applied will not be
responsible for any water-borne debris damage or water side
damage to the chiller heat exchangers due to improperly treated
water.
Water systems should be cleaned and ushed prior to chiller
installation. Water testing and treatment should be veried
during initial chiller installation/commissioning and maintained on
a continuous basis by water treatment professionals (see Limited
Product Warranty).
CAUTION
The improper use of detergents, chemicals, and additives in the
chiller system water may adversely a󰀨ect chiller performance
and potentially lead to repair costs not covered by warranty.
Any decision to use these products is at the discretion of the
owner/occupant/operator/user as such they assume full liability/
responsibility for any damage that may occur due to their use.
Vessel Drains at Startup
The unit is drained of water at the factory. Drain plugs for each
vessel head are shipped separately in the control box. Units are
shipped with the drain plug in the top water box vent hole and no
plug in the bottom drain hole. Install the bottom drain plugs prior
to lling the vessel with uid. See Figure 5.

INSTALLATION
NAVIGATOR WWV/TWVDAIKIN APPLIED 10
Figure 5: Drain Plug Installation
No. Description
1 Plug
2Vent Hole (Air Purge)
3Drain Hole (Under Insulation)
Flow Switch
A ow switch must be included in the chilled water system
to prove that there is adequate water ow to the evaporator
before the unit can start or to shut down the unit if water ow is
interrupted. A solid state, thermal dispersion ow switch that is
factory-wired is standard and is mounted in the chiller leaving
water nozzle.
Figure 6: Flow Switch
Temperature sensors and pressure gages are recommended
on the water pipes near the heat exchangers connections.
Furthermore, air vents must also be installed at the highest points
on the pipe.
Should water pump noise be excessive, we recommend using
exible connectors at both pump or chiller inlet and outlet.
Variable Speed Pumping
Reducing evaporator ow in proportion to load can reduce
system power consumption. Daikin Applied chillers are designed
for variable water ow duty provided that the rate of change
is less than 10 percent of the design ow per minute, and the
minimum and maximum ow rates for the evaporator are not
exceeded. If ow drops below the minimum allowable, large
reductions in heat transfer can occur. If the ow exceeds the
maximum rate, excessive pressure drop and tube erosion can
occur. For example, if the maximum design ow is 200 gpm and
it will be reduced to a ow of 140 gpm, the change in ow is 60
gpm. Ten percent of 200 gpm equals 20 gpm change per minute,
or a minimum of three minutes to go from maximum to desired
ow.
Glycol Solutions
Test coolant with a clean, accurate glycol solution hydrometer
or refractometer to determine the freezing point. 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.
The use of glycol may impact system performance depending on
its concentration and should be considered during initial system
design.
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.
Ice Mode
Ice making chillers will run very cold uid during o󰀨 hours,
when energy is least expensive, to build a tank of ice. In ice
building mode, the unit will operate at full load until the shuto󰀨
temperature setpoint is reached. Optional double evaporator
insulation is recommended for ice mode operation. The standard
controller software will require “ice” setpoint changes and a
digital signal into the controller is required to change to the ice
mode and back to standard cooling. Set points related to ice
mode can be found in “Unit Level Set Points” on page 27 and
wiring connection points are shown in Figure 16.
Condenser Water Control
The minimum condenser inlet water temperature should not
be less than 60°F (15.6°C). If the water temperature is lower, a
method of condenser water temperature control will be required.
Cooling tower control is discussed beginning on page 34.
Two-Way Bypass Valve Operation
A two-way regulating control valve can control ow to ensure
adequate condenser water temperature. The unit controller can
send a 0-10Vdc signal to the valve to modulate its position.

11
IOM 1264-4 WWW.DAIKINAPPLIED.COM
INSTALLATION
Three-Way Bypass Valve Operation
To modulate the water temperature in the condenser, install
a three-way by-pass valve. The three-way valve position can
be modulated by a 0-10Vdc signal from the unit controller to
regulates proper water temperature.
VFD Operating with a Condenser Water Pump
In place of a valve, use a circulation pump controlled by an
inverter.
The VFD speed may be controlled by an analog 0-10 Vdc signal
issued by the controller according to the water temperature
entering the condenser.
Relief Valves
As a safety precaution and to meet code requirements, each
chiller is equipped with pressure relief valves located on the
condenser and evaporator for the purpose of relieving excessive
refrigerant pressure (caused by equipment malfunction, re, etc.)
to the atmosphere.
Table 2: Three-Way Relief Valve Data
Chiller WWV
Relief Valve Evaporator Condenser
Location Top of vessel Top of vessel
Pressure Setting (psi) 225 325
Discharge Cap.(lb/
min air)
84.4 111
Qty 1 set 1 set
Connection Size 1.0-inch female
NPT
1.0-inch female
NPT
Building codes require that relief valves be vented to the outside
of a building. Relief piping connections to the relief valves must
have exible connectors.
Remove plastic shipping plugs (if installed) from the inside of
the valves prior to making pipe connections. Whenever vent
piping is installed, the lines must be in accordance with local
code requirements and ANSI/ASHRAE Standard 15 code
recommendations must be followed.
In order to ensure proper installation, it is important to know how
the three-way relief valve functions. One valve remains active
at all times and the second valve acts as a standby. When the
stem of the three-way valve is turned into the valve completely,
the valve is in “Front Seated Position” and all refrigerant will ow
through the back outlet port, as shown in Figure 8. When the
stem of the three-way valve is turned back completely, the valve
is in “Back Seated Position” and all refrigerant will ow through
the front outlet port as shown in Figure 9.
Figure 7: Three-Way Relief Valve
No. Description
1 Relief Valves
2Three-Way Valve
Figure 8: Three-Way Valve, Front Seated Position

INSTALLATION
NAVIGATOR WWV/TWVDAIKIN APPLIED 12
Figure 9: Three-Way Valve, Back Seated Position
When the valve stem is not turned forward or turned back
completely, the valve is in “Mid Position,” as shown in Figure 10.
CAUTION
Do not operate the system with the three-way valve stem in the
Mid Position.
Figure 10: Three-Way Valve, Mid Position

13
IOM 1264-4 WWW.DAIKINAPPLIED.COM
INSTALLATION
Retrot Knockdown
It is estimated that fty percent of retrot applications require partial or complete disassembly of the chiller. WWV chillers are relatively
easy to disassemble due to the small compressor size and simplied refrigerant piping. Two knockdown arrangements, Type A and
Type B, are available as options. All major components (evaporator, condenser, compressor, unit control panel and compressor) are
designed with lifting holes or eyebolts that should be utilized in moving these pieces individually.
Type A Knockdown, “Bolt-Together Construction”
Chillers are built and shipped completely assembled with bolt-together construction on major components for eld disassembly and
reassembly on the job site.
Figure 11: Knockdown Piping Connections - Exploded View
Type A Scope:
• Chiller components are manufactured with bolt-together
construction designed for eld disassembly and reassembly
on-site.
• Suction and discharge lines have bolt-on anges.
• Unit ships with vessel and/or head insulation.
• Unit ships with full factory refrigerant charge in the chiller.
• Unit ships with replacement refrigerant gaskets and O-rings,
stick-on wire ties, and touch-up paint. Unit is fully tested at
the factory prior to shipment.
• Site disassembly and reassembly must be supervised or
completed by Daikin Applied service personnel.
• Block o󰀨 plates are required to cover any refrigerant
connection left open for extended periods of time. Contact
Daikin Applied service to obtain these parts.
• Ideal for retrot applications where site disassembly is
needed due to installation clearances.

INSTALLATION
NAVIGATOR WWV/TWVDAIKIN APPLIED 14
Type B Knockdown, “Bolted
Construction, Shipped as Parts”
Compressor(s), power boxes and control box are removed at the
factory and shipped on separate skids; combined vessel stack is
shipped together as a sub-assembly.
Type B Scope:
• All associated piping and wiring remain attached, if
possible.
• All free piping ends are capped.
• Unit ships with vessel and/or head insulation, if ordered.
• Refrigerant will not be shipped with the chiller and must be
procured by others.
• Compressor(s) and vessels receive an inert gas holding
charge.
• Unit ships with replacement refrigerant gaskets and O-rings,
stick-on wire ties, and touch-up paint.
• Unit is fully tested at the factory prior to shipment.
• Site reassembly must be supervised or completed by
Daikin Applied service personnel. Cost for unit reassembly
and supervision by Daikin Applied service is not included in
the purchase price of the equipment. Contact Daikin Applied
service for pricing.
• Ideal for retrot applications where it is desired that the
compressor(s), power box, and control box be removed at
the factory, prior to shipment, and where refrigerant may be
secured by others.
Compressor Dimensions
Figure 12: WWV Compressor Dimension Schematic
Table 3: Compressor Dimensions and Weights
Com-
pressor Dimensions
Model Length (in) Width (in) Height (in) Weight (lbs)
JNNS 60.5 27.1 28.0 1534
MNNS 61.6 28.0 29.1 1925
RNNS 64.6 30.5 31.4 2778
HEIGHT
LENGTH
WIDTH

15
IOM 1264-4 WWW.DAIKINAPPLIED.COM
INSTALLATION
Unit Knockdown Dimensions
Figure 13: Unit Dimensional Diagram for Typical WWV Knockdown
Table 4: WWV Knockdown Dimensions
Combined Unit Congurations
E16/C18 E16/C20 E20/C20 E24/C24
Length (in) 150.7 149.7 149.8 152
Width (in) 23.2 23.2 25.2 30.4
Height (in) 61.2 61.2 65.4 73.3
Separated Evaporator Separated Condenser
E16 E20 E24 C18 C20 C24
Length (in) 143.2 144.3 142.7 150.7 149.3 151.5
Width (in) 23.2 25.2 30.4 21.3 23.7 28.4
Height (in) 31.7 35.9 38.5 33.8 34.6 38.1
Weight (lb) 1783 2579 3646 2398 2999 4371
NOTE: Weight based on maximum tube conguration and
heaviest waterbox combination.
NOTE: Weight and “corner point” weight values are presented
with a +/- 5% tolerance.

INSTALLATION
NAVIGATOR WWV/TWVDAIKIN APPLIED 16
Type A Knockdown Disassembly
Removal of specic components only may be necessary for job
site installation. Steps outlined below illustrate knockdown of
compressor, all refrigerant lines and electrical items. Additional
knockdown details will be shipped with the unit in the control
panel. During disassembly, save gaskets for block o󰀨s and bolts,
washers, and nuts for use later to install block o󰀨 plates.
CAUTION
Standard torque specs must be followed when re-installing
bolts, unless otherwise stated for specic components. Contact
Daikin Applied service for this information.
1. Recover refrigerant charge from the unit.
2. Remove discharge line at compressor and condenser
connections.
3. Remove liquid line at evaporator and condenser
connections, leaving the liquid line clamp on the top of the
condenser.
4. Remove jet pump line at shuto󰀨 valve on condenser
and evaporator. Reassemble the clamp attached to the
compressor bracket after copper jet pump line is removed.
5. Remove oil line at Rotolock connection on compressor and
condenser connection. Remove support bracket attached
to compressor mounting foot. Leave the clamp and bracket
attached to the oil line.
6. Remove power wire harness assemblies from the bottom of
the VFD to the unit control box and to compressor terminal
box but leave the bus bars, electrical barrier, ground strap,
and ttings installed.
Figure 14: Power Wiring Inside VFD
7. Disconnect the thermister wires from the compressor
terminal box and coil them inside the VFD - do not
disconnect from the VFD terminal block. Unbolt VFD from
mounting brackets and use lifting lugs to remove the panel.
8. Disconnect the high pressure switch from the control box
end only and leave connected to the compressor.
9. Remove compressor using lifting lugs and install blocko󰀨s
on the discharge and suction connections; then remove
suction line.
10. Disconnect all solenoids from the chiller but leave
connected to the control box; the jet pump solenoid
harness should include the solenoid coil.
11. Disconnect the multi-cable connectors from the back side
of the control box. Leave all transducers and ow sensors
installed on the chiller, just remove the cables. Unmount
the control box and use lifting lugs to remove. the control
panel.
12. Ensure vessel blocko󰀨s are installed at suction, discharge,
and liquid connections as shown in Figure 15. Refer to
detailed knockdown instructions included in the chiller
control panel for discharge line bolt torque specications.
13. Vessels can be further separated at tubesheet braces if
needed, leaving relief valves attached. Use lifting holes in
the tubesheets to properly move vessels.
Figure 15: Vessel Blocko Locations
















17
IOM 1264-4 WWW.DAIKINAPPLIED.COM
INSTALLATION
Type B Knockdown Disassembly
Type B knockdown units are shipped disassembled except for
the vessel stack and are shipped without refrigerant. If the stack
size or weight dictates further disassembly, the vessels can
be separated by disconnecting any interconnecting wiring and
tubing and then unbolting the tube sheet braces while ensuring
the vessel weights are safely supported. Vessels have holes
designed into each tubesheet for lifting purposes. The vessels
and compressors have an inert gas holding charge that must be
released prior to attempting to open any connection.
WARNING
Remove compressor, piping, or vessel holding charge through
the Schrader valve in the block o󰀨 plates before attempting to
loosen any ttings on them. Failure to do so can cause severe
bodily injury.
Reassembly
1. Reassemble the vessel stack, if disassembled, and
reconnect any wiring and tubing.
2. Mount the compressor on the stack. Be careful to avoid
damaging lines already mounted on the unit. Mounting
bolts, washers, and nuts are shipped loose. Leave the
mounting bolts loose until the suction and discharge lines
are installed and aligned.
During assembly, bolts holding block o󰀨 plates are used for
reassembly of the component.
3. Do not remove block o󰀨s until ready to install piping. The
compressor and vessels have a Schrader valve on their
block o󰀨 plates to be used for relieving the inert gas holding
charge.
4. Install the suction, discharge, and liquid line piping. For
Type B knockdown, the piping is shipped in crates and
on pallets. Tighten bolts after each line has been installed
and aligned, referring to detailed knockdown instructions
included in the chiller control panel for discharge line bolt
torque specications. Insulate the suction line with the
insulation and glue provided.
5. Install the control panel and reattach wiring to the unit.
6. Install VFD on the mounting brackets and reconnect wiring
to the unit control panel and compressor terminal box.
Refer to detailed knockdown instructions included in the
chiller control panel to properly place the wires.
7. Pressure (leak) test, evacuate, and charge with eld-
supplied R-134a or R-513A using stanard refrigeration
practices.

TEMPLIfIER
NAVIGATOR WWV/TWVDAIKIN APPLIED 18
Templier
Templier Operating Limits
Templier units are designed to operate over a large range of
temperatures so as to have wide application possibilities. The
following operating limits are based on vessel and compressor
limits.
Table 5: Templier Operating Limits
Description Limit
Maximum allowable condenser water pressure 225 psig (1552
kPa)
Maximum allowable evaporator water pres-
sure
175 psig (1207
kPa)
Maximum allowable water temperature to
evaporator in a nonoperating cycle 105°F (40.5°C)
Maximum entering water temperature for oper-
ating cycle
(for example, during system changeover from
heating to cooling cycle)
90°F (32.2°C)
NOTE:
Contact a Daikin Applied representative for performance at specic
operating conditions, as some limits depend on unit conguration
Table 6: Temperature Limits
Cooling Cycle Min.
Temp
Max
Temp
Notes
Evap Leaving
Water Temp.
40° F 60° F In Cooling Cycle controlling
Evap LWT - The Maximum Set
point temp is 60°F
Cond Leaving
Water Temp
70° F 160° F With Evap LWT above 50°F,
the Cond LWT must be 30°F
above Evap LWT
Evap Water
Delta-T
6° F 16° F
With Glycol in
Evap - Evap LWT
15° F 60° F With Evap LWT below 40°F, the
Cond EWT must not exceed
120°F above Evap LWT.
Heating Cycle
Evap Leaving
Water Temp
40° F 85° F With Evap LWT above 70°F,
the Cond LWT must be 30°F
above Evap LWT
Cond Leaving
Water Temp
110° F 160° F
Evap Water
Delta-T
6° F 16° F
Cond Water Delta - T
with 2 Pass
Cond Water Flow
10° F 15° F Cond Water Temp Delta-T
should be 10°F minimum for
liquid subcooling
with 4 Pass
Cond Water Flow
15° F 40° F
NOTE:
Contact a Daikin Applied representative for performance at specic
operating conditions, as some limits depend on unit conguration
Source Water Piping
The system water piping must be ushed thoroughly prior to
making connections to the unit evaporator. Lay out the water
piping so the source water circulating pump discharges into the
evaporator inlet.
CAUTION
Templier Models must have clean source water from a closed
and treated loop going to the brazed-plate evaporator. For
open water loop applications, an intermediate heat exchanger
between the source water and evaporator is required. Failure to
provide a clean, closed water loop can cause equipment failure
and possible revocation of the unit warranty.
Templier evaporator water can come from various sources
and care must be exercised to avoid sources that can cause
corrosion, fouling, or accumulation of debris in the heat
exchanger. Borderline cases will require a careful and rigorously
performed maintenance schedule.
Heating and Cooling Units
Templier units can be arranged and controlled to act as
either a water chiller or a water heater. These systems vary
considerably in the specics of the piping arrangement. Care
must be exercised when changeover occurs to avoid mixing
water streams that could possibly contaminate a water system.
For example, a unit can have chilled water in the evaporator
and tower water in the condenser when in the cooling mode.
Changeover to heating could put tower water through the
evaporator and hot water (possibly potable water) through the
condenser. This could introduce tower water into the chilled water
system and into the hot water system and should be avoided.
Source/Hot Water Thermostat
The source water temperature sensor is factory installed in the
leaving water connection on the evaporator. The controlling hot
water sensor is in the leaving condenser connection. A sensor is
also located in the entering water connection in order to measure
the condenser Delta-T. Care should be taken not to damage the
sensor cable or lead wires when working around the unit. It is
also advisable to check the lead wire before running the unit to
be sure that it is rmly anchored and not rubbing on the frame or
any other component.
If the sensor is ever removed from the well for servicing, care
must be taken as not to wipe o󰀨 the heat conducting compound
supplied in the well.
The units can be switched from heating to cooling. In the
cooling mode they are controlled by a thermistor in the leaving
evaporator connection, in the heating mode by the leaving
condenser thermistor.

19
IOM 1264-4 WWW.DAIKINAPPLIED.COM
TEMPLIfIER
Flow Switch
A water ow switch must be mounted in the evaporator and
condenser leaving water lines to prove adequate water ow to
the vessels before the unit can start. This will safeguard against
slugging the compressors on startup. It also serves to shut down
the unit in the event that water ow is interrupted to guard against
evaporator freeze-up.
NOTICE
Install per the vendor instructions and calibrate to a safe setting
based on the application design ow.
Groove Coupling / Flow Switch Warning
All evaporators and condensers have OGS-type grooved water
connections (adhering to Standard AWWA C606) or optional
ange connections. The installing contractor must provide
matching mechanical connections. PVC piping should not be
used.
On units utilizing shell-and-tube evaporator vessels and factory-
mounted ow switches and ange connections (groove-to-ange
adaptors or weld-on anges), relocating the ow switch is
required to allow for possible future replacement. The ange will
interfere with unscrewing the switch. The following procedure is
recommended before installing a ange to avoid interference:
1. Remove the ow switch and plug the opening in the
nozzle.
2. Install the groove-to-ange adaptor or weld on ange.
3. Relocate the ow switch in the water piping outside the
ange close enough to it that the wire leads will reach
and the switch can still be unscrewed.
Glycol Solutions
The use of glycol in Templier systems is uncommon, but if used,
the system performance will result in lower refrigerant suction
pressure, cooling performance less, and water side pressure
drop will be higher.
Daikin Applied encourages a minimum glycol concentration of
25% be provided on all glycol applications. Glycol concentrations
below 25% have too little inhibitor content for long-term corrosion
protection of ferrous metals.
NOTICE
The e󰀨ect of glycol in the condenser is negligible and there is no
capacity derate.
CAUTION
Do not use automotive grade antifreeze. Industrial grade glycols
must be used. Automotive antifreeze contains inhibitors which
will cause plating on the copper within the unit evaporator. The
type and handling of glycol used must be consistent with local
codes.

ELECTRICAL
NAVIGATOR WWV/TWVDAIKIN APPLIED 20
Electrical
Power wiring connections to the chiller may be done with either
copper or aluminum wiring. Wire should be sized and installed
per NEC and/or local codes. Wire sizing and wire count must
t in the power connection lug sizing listed in chiller submittals.
All wiring within the unit is sized in accordance with the USA
National Electrical Code. Refer to the unit nameplate and the
submittals for the correct electrical ratings.
DANGER
Qualied, licensed electricians must perform wiring. Electrical
shock hazard exists that can cause severe injury or death.
The eld power wiring required varies depending on unit model.
See page 21 for wiring information. These wiring diagrams are
also provided with the chiller.
NOTICE
Wiring, fuse, and wire size must be in accordance with the
National Electric Code (NEC). The voltage to these units must
be within ±10% of nameplate voltage (415V units must have
voltage within -13% and +6% of nameplate voltage) and the
voltage unbalance between phases must not exceed 2%. Since
a 2% voltage unbalance will cause a current unbalance of 6 to
10 times the voltage unbalance per the NEMA MG-1 Standard,
it is most important that the unbalance between phases be kept
at a minimum.
CAUTION
Do not use power factor correction capacitors with WWV chillers.
Doing so can cause harmful electrical resonance in the system.
Correction capacitors are not necessary since VFDs inherently
maintain high power factors.
Control panels are rated for the amount of current that can
be passed through it and still contain the damage within the
enclosure; this value is known as the short circuit panel rating as
shown in Table 7 and is standard on all WWV and TWV models.
Table 7: Short Circuit Current Ratings (kAmps)
Voltage/Hz High Short Circuit Panel Rating
460/60
65kA380/60
400/50
575/60 25kA
Field-supplied disconnect switches are required if not factory-
supplied with the unit. 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.
Control Circuit
The unit control circuit is powered at 120 Vac. Terminals are
provided in the unit control panel for optional eld hookup of the
control circuit to a separate fused 115-volt power supply in lieu of
the standard factory installed control transformer.
Water ow switch interlock terminals are included in the
controller. See Figure 16 for the correct connections in the eld.
The purpose of the water ow switch interlock is to prevent the
compressor from running while the evaporator and condenser
water pumps come online and provide the correct water ow.
It is best to leave pump control to the unit controller for better
system management. If an external system independently
manages pump starts, use the following guidelines:
• Turn on evaporator pump 2 minutes before enabling the
machine
• Turn o󰀨 evaporator pump 5 minutes after disabling the
machine
Use with On-Site Generators
Switching from site grid power to generator power and vice
versa requires that the chiller must either be powered down or
the power must be o󰀨 for more than 5 seconds to avoid sending
out of phase voltage to the chiller. A properly installed, fully
Synchronized Automatic Transfer Switch must be used to transfer
power if the chiller is running under load.
Generator Sizing
WARNING
Generator must be sized by an electrical engineer familiar with
generator applications.
Transfer Back to Grid Power
Proper transfer from stand-by generator power back to grid
power is essential to avoid chiller damage and must be used to
ensure proper function of the unit.
WARNING
Stop the chiller before transferring supply power from the
generator back to the utility power grid. Transferring power while
the chiller is running can cause severe chiller damage.
The necessary procedure for reconnecting power from the
generator back to the utility grid is as follows:
1. Set the generator to always run ve minutes longer than
the unit start-to-start timer, which can be set from two to
sixty minutes, while keeping the chiller powered by the
generator until the fully Synchronized Automatic Transfer
Switch properly hands over chiller power from the site.
2. Congure the transfer switch provided with the generator to
automatically shut down the chiller before transfer is made.
The automatic shut-o󰀨 function can be accomplished
through a BAS interface or with “remote on/o󰀨” wiring
connection shown in Figure 16.
A start signal can be given anytime after the stop signal since the
three-minute start-to-start timer will be in e󰀨ect.