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 piping approval
Notes: The most common problems delaying start-up and affecting unit reliability are:
3. Items on this list incorrectly acknowledged resulting in delayed start and possible extra expenses incurred by return trips.
Contractor Representative
Daikin Applied Sales Representative
Signed:
Signed:
Name:
Name:
Company:
Company:
Date:
Date:
Phone/Email:
Phone/Email:
Pre-Start Checklist – Scroll Compressor Chillers
Must be completed, signed and provided to Daikin Applied at least 2 weeks prior to requested start date.
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:
Cut Here
a.From Power supply to chiller
* Refer to NEC Article 430-22 (a)
2. Remote Evaporator piping incomplete or incorrect. Provide approved piping diagrams.
Daikin Trailblazer™ air-cooled water chillers are complete, selfcontained, automatic chillers designed for outdoor installation.
Packaged units are completely assembled, factory wired,
charged, and tested.
NOMENCLATURE
A G Z XXX E D SM
Air-Cooled
Global Design
Scroll Compressor
Nominal Tons
Design Vintage
WARNING
Installation is to be performed by qualied personnel who are
familiar with local codes and regulations.
CAUTION
Sharp edges on unit and coil surfaces are a potential hazard
to personal safety. Avoid contact with them.
InsTallaTIonand applICaTIon InformaTIon
The electrical control center includes all equipment protection
and operating controls necessary for dependable automatic
operation.
Application
SM = Standard Efciency Packaged Unit
HM = High Efciency Packaged Unit
# of Compressors
D = Tandem per Circuit
T = Trio per Circuit
Figure 1: Suggested Pushing Arrangment
Blocking is required
across full width
Additional Manual
This manual covers the installation, of dual circuit, AGZ-EH
packaged, scroll compressor chillers using R-410A.
Information for units with either the pump package or remote
evaporator options can be found at www.DaikinApplied.com.
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.
Handling
Be careful to avoid rough handling of the unit. Do not push
or pull the unit from anything other than the base. Block the
pushing vehicle away from the unit to prevent damage to the
sheet metal cabinet and end frame (see Figure 1).
To lift the unit, 2-1/2” (64mm) diameter lifting eyes are provided
on the base of the unit. Arrange spreader bars and cables to
prevent damage to the condenser coils or cabinet (see Figure
2).
CAUTION
All lifting locations must be used to prevent damage to unit.
Figure 2: Required Lifting Arrangement
Number of fans and
rigging holes may vary
SPREADER BARS
REQUIRED FOR
EACH PAIR OF
LIFTING LUGS
(USE CAUTION)
from this diagram.
The lifting method will
remain the same.
MUST USE THESE
RIGGING HOLES
(BE AWARE OF
CONTROL BOX
LOCATION)
DANGER
Do not stand beneath the unit while it is being lifted or
installed.
www.DaikinApplied.com 3 IOM 1206-6 • TRAILBLAZER™ MODEL AGZ CHILLERS
InsTallaTIonand applICaTIon InformaTIon
Operating and Standby Limits
Table 1: Operating Limits
Maximum standby ambient temperature131°F (55°C)
Maximum operating ambient temperature105°F (41°C)
-with optional high ambient package (see information under High Ambient Operation)125°F (52°C)
Minimum operating ambient temperature (standard control)32°F (0°C)
Minimum operating ambient temperature (with optional low-ambient control)-10°F (-23°C)
Leaving chilled water temperature40°F to 65°F (4°C to 18°C)
Leaving chilled uid temperatures (with anti-freeze) - Note that in cases of high ambient
temperature, the lowest leaving water temperature settings may be outside of the chiller
operating envelope; consult Daikin Tools to ensure chiller is capable of the required lift.
Operating chilled water delta-T range6°F to 16°F (3.3°C to 8.9°C)
Maximum evaporator operating inlet uid temperature81°F (27°C)
Maximum evaporator non-operating inlet uid temperature100°F (38°C)
15°F to 65°F (-9°C to 18°C)
Unit Placement
Trailblazer™ units are for outdoor applications and can be
mounted either on a roof or at ground level. For roof mounted
applications, install the unit on a steel channel or I-beam
frame to support the unit above the roof. For ground level
applications, install the unit on a substantial base that will not
settle. Use a one-piece concrete slab with footings extended
below the frost line. Be sure the foundation is level within 0.5”
(13 mm) over its length and width. The foundation must be
strong enough to support the unit weight - see “Dimensions
and Weights - Packaged Units” on page 15.
Service Clearance
Sides
• 30-70 Ton Models: Minimum of 4 feet (1.2 meters)
• 75-240 Ton Models: It is highly recommended to
provide a minimum of 8 feet (2.4 meters) on one side to
allow for coil replacement. Coils can be removed from
the top, allowing a minimum of 4 feet (1.2 meters) of
side clearance; however, the unit performance may be
derated.
Control Panel End
• All Models: Minimum of 4 feet (1.2 meters)
Opposite Control Panel End
• 30-70 Ton Models with Microchannel Coils: Minimum
of 7.5 feet (2.3 meters)
• 75-180 Ton Models: Minimum of 4 feet (1.2 meters)
• 190-240 Ton Models: Minimum of 8 feet (2.4 meters) for
evaporator removal
Figure 3: Service Clearance
075-240 Ton Models: 8ft (2.4 m) recommended on one side
Minimum = 7.5 ft (2.3 m)
for models 030-070
with Microchannel Coils
Minimum = 4 ft (1.2 m)
for models 075-180
Minimum = 8 ft (2.4 m)
for models 190-240
Minimum = 4 ft (1.2 m)
Minimum = 4 ft (1.2 m)
Minimum = 4 ft
(1.2 m)
Control Panel
Spacing Requirements
Sufcient clearance must be maintained between the unit
and adjacent walls or other units to allow the required unit air
ow to reach the coils. Failure to do so will result in a capacity
reduction and an increase in power consumption. No solid
obstructions are allowed above the unit at any height, see page
7 for details.
Graphs on the following pages give the minimum clearance
for different types of installations and also capacity reduction
and power increase if closer spacing is used. 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.
IOM 1206-6 • TRAILBLAZER™ MODEL AGZ CHILLERS 4 www.DaikinApplied.com
InsTallaTIonand applICaTIon InformaTIon
D
% Capacity Reduction
AGZ190-210EAGZ225-240E
AGZ190-210EAGZ225-240E
Case 1: Building or Wall on One Side of Unit
NOTE: Assumes a solid height wall taller than unit. Refer to
Case 4 for partial wall openings.
For models AGZ030-100E, maintain a 4 feet minimum from a
wall of any height.
For models AGZ110-130E, maintain a 6 feet minimum from a
wall of any height.
For models AGZ140-240E, maintain a 8 feet minimum from a
wall of any height.
Figure 4: Building or Wall on One Side of Unit
Height
of
Wall
Distance
Between
Wall
and
Unit
Case 2: Two Units, Side-by-Side
For models 030-180, there must be a minimum of 4 feet
between two units placed side-by-side; however, performance
may be affected at this distance. For models 190-210,
the minimum is 6 feet as closing spacing may cause air
recirculation and elevated condenser pressure. Assuming
the requirement of one side having at least 8 feet of
service clearance is met, Case 2 gures show performance
adjustments as the distance between two units increases.
Figure 5: Two Units, Side-by-Side
Figure 6: Case 2 - Full Load Capacity Reduction
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
4568
Full Load Capacity Reduction
Distance Between Units (ft)
AGZ030-070EAGZ075-100E
AGZ110-130EAGZ140-180E
Figure 7: Case 2 - Power Increase
4.5
4.0
3.5
3.0
2.5
2.0
1.5
% Power Increase
1.0
0.5
0.0
4568
Power Increase
Distance Between Units (ft)
AGZ030-070EAGZ075-100E
AGZ110-130EAGZ140-180E
www.DaikinApplied.com 5 IOM 1206-6 • TRAILBLAZER™ MODEL AGZ CHILLERS
InsTallaTIonand applICaTIon InformaTIon
Distance from Wall to Unit (ft)
Case 3: Three or More Units, Side-by-Side
For all models, there must be a minimum distance between
any units placed side-by-side; however, performance may be
affected at this distance. Minimum distances are: models 030
to 070 - 4 feet, models 075 to 100 - 5 feet, models 110 to 240
- 6 feet. Figure 9 and Figure 10 depict Case 3 performance
adjustments as the distance between units increases.
NOTE: Data in Figure 9 and Figure 10 is for the middle unit
with a unit on each side. See Case 2 adjustment
factors for the two outside units.
Decorative screening walls are often used to help conceal a
unit either on grade or on a rooftop. When possible, design
these walls such that the combination of their open area
and distance from the unit (see Figure 11) do not require
performance adjustment. If the wall opening percentage is less
than recommended for the distance to the unit, it should be
considered as a solid wall. It is assumed that the wall height is
equal to or less than the unit height when mounted on its base
support. If the wall height is greater than the unit height, see
Case 5: Pit Installation for performance adjustment factors.
The distance from the sides of the unit to the side walls must
be sufcient for service, such as opening control panel doors.
For uneven wall spacing, the distance from the unit to each
wall can be averaged providing no distance is less than 4 feet.
Values are based on walls on all four sides.
IOM 1206-6 • TRAILBLAZER™ MODEL AGZ CHILLERS 6 www.DaikinApplied.com
InsTallaTIonand applICaTIon InformaTIon
0.0
1.0
2.0
3.0
4.0
5.0
6.0
08101213
14
% Capacity Reduction
Depth of Pit / Wall Height (ft)
Full Load Capacity Reduction (AGZ030-070E)
Dis tance = 4 ft
Dis tance = 5 ft
Dis tance = 6 ft
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
08101213
14
% Pow er Incr ease
Depth of Pit / Wall Height (ft)
Power Increase (AGZ030-070E)
Dis tance = 4 ft
Dis tance = 5 ft
Dis tance = 6 ft
0.0
1.0
2.0
3.0
4.0
5.0
6.0
08101213
14
% Capacity Reduction
Depth of Pit / Wall Height ft)
Full Load Capacity Reduction (AGZ075
-130E)
Dis tance = 5 ft
Dis tance = 6 ft
Dis tance = 8 ft
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
08101213
14
% Pow er Incr ease
Depth of Pit / Wall Height (ft)
Power Increase (AGZ075-130E)
Dis tance = 5 ft
Dis tance = 6 ft
Dis tance = 8 ft
Case 5: Pit Installation
Pit installations can cause operating problems resulting from
air recirculation and restriction and require care that sufcient
air clearance is provided, safety requirements are met and
service access is provided. A solid wall surrounding a unit is
substantially a pit and this data 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
recirculation problems. Have any pit installation reviewed by
the Daikin Applied sales representative prior to installation to
ensure it has sufcient air-ow characteristics and approved by
the installation design engineer to avoid risk of accident.
Models AGZ030-070E:
The Case 5 gures for models AGZ030-070E show adjustment
factors for pit/wall heights of 4 feet, 5 feet, and 6 feet.
Figure 12: Case 5 - Full Load Capacity Reduction
(AGZ030E-070E)
Figure 14: Case 5 - Pit Installation
Models AGZ075-130E:
The Case 5 gures for models AGZ075-130E show adjustment
factors for pit/wall heights of 5 feet, 6 feet, and 8 feet.
Figure 15: Case 5 - Full Load Capacity Reduction
(AGZ075-130E)
Figure 13: Case 5 - Power Increase (AGZ030-070E)
www.DaikinApplied.com 7 IOM 1206-6 • TRAILBLAZER™ MODEL AGZ CHILLERS
Figure 16: Case 5 - Power Increase (AGZ075-130E)
Models AGZ140-240E:
% Capacity Reduction
% Capacity Reduction
The Case 5 gures for models AGZ140-240E show adjustment
factors for pit/wall heights of 6 feet, 8 feet, and 10 feet.
InsTallaTIonand applICaTIon InformaTIon
Figure 17: Case 5 - Full Load Capacity Reduction
(AGZ140-180E)
6.0
5.0
4.0
3.0
2.0
1.0
0.0
Full Load Capacity Reduction (AGZ140-180E)
0810121314
Depth of Pit / Wall Height (ft)
Distance = 6 ftDistance = 8 ftDi stance = 10 ft
Figure 18: Case 5 - Full Load Capacity Reduction
(AGZ190-240E)
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
Full Load Capacity Reduction (AGZ190-240E)
0810121314
Depth of Pit / Wall Height (ft)
Distance = 6 ftDistance = 8 ftDistance = 10 ft
Figure 19: Case 5 - Power Increase (AGZ140-210E)
9.0
8.0
7.0
6.0
5.0
4.0
3.0
% Power Increase
2.0
1.0
0.0
0810121314
Power Increase (AGZ140-210E)
Depth of Pit / Wall Height (ft)
Distance = 6 ftDistance = 8 ftDistance = 10 ft
Figure 20: Case 5 - Power Increase (AGZ225-240E)
11.0
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
% Power Increase
2.0
1.0
0.0
0810121314
Power Increase (AGZ225-240E)
Depth of Pit / Wall Height (ft)
Distance = 6 ftDistance = 8 ftDistance = 10 ft
IOM 1206-6 • TRAILBLAZER™ MODEL AGZ CHILLERS 8 www.DaikinApplied.com
Chilled Water Piping
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).
• AGZ-E models 030-180 require a strainer with
perforations no larger than 0.063” (1.6 mm) diameter and
models 190-240 require a strainer with perforations no
larger than 0.125” (3.175 mm) diameter. See the Inlet
Strainer Guidelines on page 10 for more information.
• A water ow switch must be installed in the horizontal
piping of the supply (evaporator outlet) water line to avoid
evaporator freeze-up under low or no ow conditions. The
ow switch may be ordered as a factory-installed option,
a eld-installed kit, or may be supplied and installed in the
eld. See page 12 for more information.
• Piping for units with brazed-plate evaporators must have
a drain and vent connection provided in the bottom of
the lower connection pipe and to the top of the upper
connection pipe respectively, see Figure 21. These
evaporators do not have drain or vent connections due
to their construction. Purge air from the water system
before unit start-up to provide adequate ow through the
evaporator.
• Adequate piping support, independent from the unit,
InsTallaTIonand applICaTIon InformaTIon
to eliminate weight and strain on the ttings and
connections.
It is recommended that the eld 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.
NOTE: Failure to follow these measures may result in
performance and reliability issues.
WARNING
Daikin Applied recommends against the use of PVC and
CPVC piping for chilled water systems. In the event the pipe
is exposed to POE oil used in the refrigerant system, the pipe
can be chemically damaged and pipe failure can occur. .
WELDED PIPE CONNECTIONS ARE NOT ALLOWED
BETWEEN THE STRAINER AND EVAPORATOR DUE
TO THE CHANCE OF SLAG ENTERING THE EVAPORATOR
www.DaikinApplied.com 9 IOM 1206-6 • TRAILBLAZER™ MODEL AGZ CHILLERS
Typical Piping, Shell and Tube Evaporator
CHANCE OF SLAG ENTERING THE EVAPORATOR
InsTallaTIonand applICaTIon InformaTIon
VENT
3/8” PIPE PLUG
OUTLET
INLET
VIBRATION
ELIMINATOR
DRAIN
PROTECT ALL FIELD PIPING
AGAINST FREEZING
WELDED PIPE CONNECTIONS ARE NOT ALLOWED
BETWEEN THE STRAINER AND EVAPORATOR DUE TO THE
WATER
STRAINER
Inlet Strainer Guidelines
An inlet water strainer kit must be installed in the chilled water
piping before the evaporator inlet. Several paths are available
to meet this requirement:
1. Factory installed option is available - models 030 to 180.
2. A eld-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 0.063” (1.6
mm) diameter for AGZ-E models 030-180, a strainer
with perforations no larger than 0.125” (3.175 mm)
diameter for AGZ-E models 190-240].
• Extension pipe with two Schrader ttings that can be
used for a pressure gauge and thermal dispersion ow
switch. The pipe provides sufcient clearance from the
evaporator for strainer basket removal.
• ½-inch blowdown valve
• Two grooved clamps
Both are sized per Table 2 and with the pressure drop shown in
the Strainer Pressure Drop graph. Connection sizes are given
in the Dimensions and Weights section on page 15.
3. A eld-supplied strainer that meets specication and
installation requirements of this manual.
LEAVING FLUID
TEMP. SENSOR
VIBRATION
ELIMINATOR
FLOW
VALVED
PRESSURE
GAUGE
GATE
VALV E
BALANCING
FLOW
SWITCH
VALV E
Figure 22: Factory Installed Strainer
Figure 23: Strainer Pressure Drop
100.0
10.0
Pressure Drop ( ft)
1.0
GATE
VALV E
FLOW
2.5 in
3.0 in
4.0 in
8.0 in.
Table 2: Strainer Data
Trailblazer™
Model
030-070E2.5 (64)0.063 (1.6)YY
075-130E3.0 (76)0.063 (1.6)YY
140-180E4.0 (102)0.063 (1.6)YY
190-240E8.0 (203)0.125 (3.175)NY
Strainer Size
in (mm)
IOM 1206-6 • TRAILBLAZER™ MODEL AGZ CHILLERS 10 www.DaikinApplied.com
Minimum
perforation size
in (mm)
Factory
Installed
Option
Field
Installed
Option
0.1
10.0100.01000.0
Flow Rate (gpm)
InsTallaTIonand applICaTIon InformaTIon
Water Flow Limitations
Constant Evaporator Flow
The evaporator ow rates and pressure drops shown on page
28 for various system designs. The maximum ow rate and
pressure drop are based on a 6°F temperature drop. Flow
rates above the maximum values will result in unacceptable
pressure drops and can cause excessive erosion, potentially
leading to failure.
The minimum ow and pressure drop is based on a full load
evaporator temperature drop of 16°F. Evaporator ow rates
below the minimum values can result in laminar ow causing
low pressure alarms, scaling and poor temperature control.
Variable Evaporator Flow
Reducing evaporator ow in proportion to load can reduce
system power consumption. The rate of ow change should be
a maximum of 10 percent of the ow per minute. 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. The water
ow through the evaporator must remain between the minimum
and maximum values listed in Table 11 on page 28. 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. See unit
set point information in See Variable Evaporator Flow on page
56
System Water Volume Considerations
All chilled water systems need adequate time to recognize
a load change, respond to the change and stabilize to avoid
undesirable short cycling of the compressors or loss of
temperature 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 “gallons of water volume equal to two to
three times the chilled water gpm ow rate” is often used. 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”.
BAS should enable chiller only when there is a cooling
demand.
Evaporator Freeze Protection
Evaporator freeze-up can be a concern in the application of
air-cooled water chillers in areas experiencing below freezing
temperatures. To protect against freeze-up, insulation and an
electric heater are furnished with the evaporator. Models 030
through 180 have an external plate heater and thermostat.
Models 190 through 240 have immersion heaters with a
thermostat. These heaters help protect the evaporator down to
-20°F (-29°C) ambient air temperature. The evaporator heater
cable is factory wired to the 115 volt control circuit transformer
in the control box. A 115V power source for the heater and
controls may also be supplied from a separate power feed to
maximize unit protection if desired. Refer to the eld wiring
diagram on page 30 for additional information on supplying a
separate 115V power feed.
Operation of the heaters is automatic through the sensing
thermostat that energizes the evaporator heaters for protection
against freeze-up. Unless the evaporator is drained in the
winter or contains an adequate concentration of anti-freeze, the
disconnect switch to the evaporator heater must not be open.
Although the evaporator is equipped with freeze protection,
it does not protect water piping external to the unit or the
evaporator itself if there is a power failure or heater burnout, or
if the chiller is unable to control the chilled water pumps. Use
one of the following recommendations for additional freeze
protection:
1. If the unit will not be operated during the winter, drain the
evaporator and chilled water piping and ush with glycol.
2. Add a glycol solution to the chilled water system. Burst
protection should be approximately 10°F below minimum
design ambient temperature.
3. Insulate the exposed piping.
4. Add thermostatically controlled heat by wrapping the
lines with heat tape.
5. When glycol is added to the water system for freeze
protection, the refrigerant suction pressure will be lower,
cooling performance less, and water side pressure drop
greater. If the percentage of glycol is high, or if propylene
is used instead of ethylene glycol, the added pressure
drop and loss of performance could be substantial. When
Glycol or Ice are selected as Unit Mode, the MicroTech®
III control will automatically reset the available range
for the Leaving Water Temperature, Freezestat and
Evaporator Pressure settings.
www.DaikinApplied.com 11 IOM 1206-6 • TRAILBLAZER™ MODEL AGZ CHILLERS
InsTallaTIonand applICaTIon InformaTIon
Chilled Water Pump
It is important that the chilled water pumps be wired to, and
controlled by, the chiller’s microprocessor. When equipped
with optional dual pump output, the chiller controller has the
capability to selectively send the signal to a pump relay (by
others) to 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 start-up sequence.
he pump will also be turned on when the water temperature
goes below the Freeze Setpoint for longer than a specied time
to help prevent evaporator freeze-up. Connection points are
shown in the Field Wiring Diagram beginning on page 30.
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.
Failure to allow pump control by the chiller may cause the
following problems:
1. If any device other than the chiller attempts to start the
chiller without rst 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 ow.
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 or contain glycol, the chiller
may be subject to catastrophic evaporator failure due to
freezing. The freeze rating of the evaporator is based on
the evaporator heater and pump operation. The external
brazed plate heater or shell and tube immersion heater
itself may not be able to properly protect the evaporator
from freezing without circulation of water.
Flow Switch
All chillers require a chilled water ow switch to check that
there is adequate water ow through the evaporator ant to shut
the unit down if there isn’t. There are two options for meeting
this requirement.
1. A factory-mounted thermal dispersion ow switch.
2. A “paddle” type ow switch is available from Daikin
Applied for eld mounting and wiring. Wire from switch
terminals Y and R to the unit control panel terminals
shown on the eld wiring diagrams, page 30 and page
31. Mount the ow switch in the leaving water line to
shut down the unit when water ow is interrupted. A ow
switch is an equipment protection control and should
never be used to cycle a unit.
Installation should be per manufacturer’s instructions included
with the switch. Flow switches should be calibrated to shut off
the unit when operated below the minimum listed ow rate for
the unit as listed on page 28.
There is also a set of normally closed contacts on the switch
that can be used for an indicator light or an alarm to indicate
when a “no ow” condition exists. Freeze protect any ow
switch that is installed outdoors. Differential pressure switches
are not recommended for outdoor installation. They can freeze
and not indicate a no-ow conditions.
Glycol Solutions
The use of a glycol/water mixture in the evaporator to prevent
freezing will reduce system capacity and efciency, as well
as increase pressure drop. The system capacity, required
glycol solution ow rate, and pressure drop with glycol may be
calculated using the following formulas and tables.
Glycol Flow Rate = Capacity Tons X Flow Correction Factor
(gpm) 0.00429 x ΔT
1. Capacity - Multiply the capacity based on water by the
Capacity correction factor from Table 3 or Table 4.
2. Flow - Multiply the water evaporator ow by the Flow
correction factor from Table 3 or Table 4 to determine
the increased evaporator ow due to glycol. If the ow is
unknown, it can be calculated from the above equation.
3. Pressure drop - Multiply the water pressure drop from
Table 11 by Pressure Drop correction factor from Table
3 or Table 4. High concentrations of propylene glycol at
low temperatures may cause unacceptably high pressure
drops.
4. Power - Multiply the water system power by Power
correction factor from Table 3 or Table 4.
IOM 1206-6 • TRAILBLAZER™ MODEL AGZ CHILLERS 12 www.DaikinApplied.com
InsTallaTIonand applICaTIon InformaTIon
Test coolant with a clean, accurate glycol refractometer to
determine the freezing point. Obtain percent glycol from the
freezing point table below. It is recommended that a minimum
of 25% solution by weight be used for protection against
corrosion or that additional compatible inhibitors be added.
Concentrations above 35% do not provide any additional burst
protection and should be carefully considered before using.
Reset the freezestat setting to 6 °F (3.3 °C) below the leaving
chilled water setpoint temperature after the glycol percentage
is veried safe for the application.
CAUTION
Do not use an automotive-grade antifreeze. Industrial
grade glycols must be used. Automotive antifreeze contains
inhibitors which will cause plating on the copper tubes within
the chiller evaporator. The type and handling of glycol used
must be consistent with local codes.
Table 3: Ethylene Glycol Factors
E.G.Freeze Point
%°F°C
1026-3.30.9970.9991.0281.090
2018-7.80.9930.9971.0591.216
307-140.9870.9951.0941.379
40-7-220.9810.9931.1321.557
50-28-330.9720.9901.1741.811
CapPowerFlowPD
Low Ambient Operation
Compressor staging is adaptively determined by system load,
ambient air temperature, and other inputs to the MicroTech® III
control. The standard minimum ambient temperature is 32°F
(0°C). A low ambient option with fan VFD allows operation
down to -10°F (-23°C). The minimum ambient temperature
is based on still conditions where the wind is not greater
than 5 mph. Greater wind velocities will result in reduced
discharge pressure, increasing the minimum operating
ambient temperature. Field installed louvers are available and
recommended to help allow the chiller to operate effectively
down to the ambient temperature for which it was designed.
High Ambient Operation
Trailblazer™ units for high ambient operation (105°F to 125°F,
40°C to 52°C) require the addition of the optional high ambient
package that includes a small fan with a lter in the air intake
to cool the control panel.
All units with the optional VFD low ambient fan control
automatically include the high ambient option. Note that in
cases of high ambient temperature, capacity could be reduced
or the lowest leaving water temperature settings may be
outside of the chiller operating envelope; consult Daikin Tools
to ensure chiller is capable of the required lift.
Table 4: Propylene Glycol Factors
P.G.Freeze Point
%°F°C
1026-3.30.9950.9981.0111.025
2019-7.20.9880.9951.0301.150
309-130.9790.9921.0561.375
40-5-210.9680.9881.0901.701
50-27-330.9550.9831.1312.128
CapPowerFlowPD
www.DaikinApplied.com 13 IOM 1206-6 • TRAILBLAZER™ MODEL AGZ CHILLERS
InsTallaTIonand applICaTIon InformaTIon
Condenser Coil Options and Coating
Considerations
The standard coils on the Trailblazer™ chiller are an all
aluminum alloy microchannel design with a series of at
tubes containing multiple, parallel ow microchannels layered
between the refrigerant manifolds. The microchannel coils are
designed to withstand 1000+ hour acidied synthetic sea water
fog (SWAAT) test (ASTM G85-02) at 120°F (49°C) with 0% n
loss and develop no leaks.
Should the standard microchannel coil not meet the corrosion
requirements for the application, additional coil options are
available.
Aluminum n/copper tube coils consist of 3/8 inch (10 mm)
seamless copper tubes mechanically bonded into plate-type
aluminum ns. The ns have full drawn collars to completely
cover the tubes. The aluminum n/copper tube option is best
suited for non-corrosive environments, and can be repaired
onsite. This option is only available for models AGZ030-070E.
Figure 24: Aluminum Fin/Copper Tube Coils
BlackFin™ coils include aluminum ns pre-coated with a
durable phenolic epoxy coating. In addition to providing a
durable coating on the n material, the BlackFin™ coils provide
and epoxy barrier between the aluminum n stock and the
copper tube, to prevent the galvanic corrosion that can occur
between the dissimilar metals. This option will provide a 1000+
hour salt spray rating per ASTM B117-90. The BlackFin™
option provides enhanced protection in mildly corrosive
environments. This option is only available for models AGZ030070E.
Copper-n coils consist of 3/8 inch (10 mm) seamless copper
tubes mechanically bonded into plate-type copper ns. The ns
have full drawn collars to completely cover the tubes. Since
the n and the tube materials are similar, the opportunity for
galvanic corrosion is eliminated. The copper n/copper tube
option may be used in marine environments; however this
option is not well suited for industrial or chemical atmospheric
contamination. This option is only available for models
AGZ030-070E.
ElectroFin® coil coating is a water-based extremely exible
and durable epoxy polymer coating uniformly applied to all
coil surfaces through a multi-step, submerged electrostatic
coating process. ElectroFin® condenser coils provide a 5000+
hour salt spray resistance per ASTM B117-90, applied to both
the coil and the coil frames. The ElectroFin® coated coils also
receive a UV-resistant urethane top-coat to provide superior
resistance to degradation from direct sunlight. This coil coating
option provides the best overall protection against corrosive
marine, industrial or combined atmospheric contamination.
This coating option may be applied to any of the untreated coil
options offered, to provide excellent longevity and resistance to
corrosion.
Table 5: Coil/Coating Selection Matrix
Coil Option
Standard Microchannel+++---
Alum. Fin/Copper Tube
Copper Fin/Copper Tube
™5
BlackFin
ElectroFin
®
Non-
Corrosive
5
+++---
5
++++++--
+++++-
+++++++++++
Unpolluted
1
Marine
2
Industrial
Combined
3
Marine-
Industrial
NOTE:
1. Non-corrosive environments may be estimated by the
appearance of existing equipment in the immediate area
where the chiller is to be placed.
2. Marine environments should take into consideration
proximity to the shore as well as prevailing wind
direction.
3. Industrial contaminants may be general or localized,
based on the immediate source of contamination (i.e.
diesel fumes due to proximity to a loading dock).
4. Combined marine-industrial are inuenced by proximity
to shore, prevailing winds, general and local sources of
contamination.
5. Available for models AGZ030-070E only.
4
IOM 1206-6 • TRAILBLAZER™ MODEL AGZ CHILLERS 14 www.DaikinApplied.com
dImensIonsand WeIghTs - paCkaged UnITs
BLANK PANELS ARE
M1 - M4, ISOLATOR MOUNTING HOLE LOCATIONS ON BOTTOM SURFACE OF UNIT BASE
IOM 1206-6 • TRAILBLAZER™ MODEL AGZ CHILLERS 22 www.DaikinApplied.com
Table 6: Refrigerant Charge - Microchannel Units
Microchannel Coil Unit Operating Charge - lbs (kg)
Unit
Models
030E17 (7.7)17 (7.7)15 (16.8)15 (16.8)
035E16 (7.3)16 (7.3)14 (6.4)14 (6.4)
040E23 (10.5)23 (10.5)21 (9.5)21 (9.5)
045E23 (10.5)23 (10.5)21 (9.5)21 (9.5)
050E23 (10.5)23 (10.5)21 (9.5)21 (9.5)
055E23 (10.5)23 (10.5)21 (9.5)21 (9.5)
060E23 (10.5)23 (10.5)21 (9.5)21 (9.5)
065E23 (10.5)23 (10.5)21 (9.5)21 (9.5)
070E23 (10.5)23 (10.5)21 (9.5)21 (9.5)
075E46 (20.9)46 (20.9)
Replaceable Core Filter DrierSealed Filter Drier
Circuit 1Circuit 2Circuit 1Circuit 2
refrIgeranT Charge
refrIgeranT Charge
080E46 (20.9)46 (20.9)
090E48 (21.8)48 (21.8)
100E49 (22.3)49 (22.3)
110E64 (29.1)64 (29.1)
120E65 (29.5)65 (29.5)
130E65 (29.5)65 (29.5)
140E76 (34.5)76 (34.5)
150E76 (34.5)76 (34.5)
161E78 (35.4)78 (35.4)
170E80 (36.3)80 (36.3)
180E80 (36.3)80 (36.3)
190E
210E
225E110 (49.9)110 (49.9)
240E114 (51.8)114 (51.8)
90 (40.9)90 (40.9)
94 (42.7)94 (42.7)
www.DaikinApplied.com 23 IOM 1206-6 • TRAILBLAZER™ MODEL AGZ CHILLERS
Figure 33: Spring Isolator
OPER. HT.
ELASTOMERIC PAD
.25 TO .5 GAP
3
.62 [15.8]
[76.2]
.625
[15.9]
5
6.2
[127.0]
FREE HT.
5\X [127.0]
ELASTOMERIC
SNUBBER
9.25 [235.0]
10.5 [266.7]
7.75 [196.9]
.5 [12.7] DIA.
POSITIONING
PIN
ADJ. BOLT
[6.4 to 12.7]
IsolaTor InformaTIon
IsolaTor InformaTIon
In all cases, set the unit in place and level. When spring
isolators are required, install springs running under the main
unit supports. Unit should be installed on blocks or shims at the
listed free height. Isolator springs should not be loaded until the
installation is complete, then adjust the springs to the vendor
listed compression for the load point.
Installation of spring isolators requires exible piping
connections and at least three feet of exible electrical conduit
to avoid straining the piping and transmitting vibration and
noise.
Mounting locations for each model can be found in the
“Dimensions and Weights - Packaged Units” section of this
document, starting on page 15.
Optional seismic isolator information begins on page 26
Contact a Daikin Applied sales representative for isolator
information related to units with other n materials.
.56 [14.3]
.25 [6.4]
Figure 34: Rubber-in-Shear (RIS) Isolator
Table 7: Isolator Kits
AGZ-E
Model
030332320102332325101
035332320102332325101
040332320102332325101
045332320132332325101
050332320132332325101
055332320132332325101
060332320132332325101
065332320132332325101
070332320132332325101
075332320117332325101
080332320117332325101
090332320117332325101
100332320117332325101
110332320123332325113
120332320124332325113
130332320124332325113
140332320106332325113
150332320106332325113
161332320111332325113
170332320111332325113
180332320111332325113
190332320108332325114
210332320108332325114
225332320126332325114
240332320126332325114
Microchannel - Packaged Units
Spring IsolatorsRIS Isolators
IOM 1206-6 • TRAILBLAZER™ MODEL AGZ CHILLERS 24 www.DaikinApplied.com
Table 8: Isolator Information - Microchannel Units
AGZ-E
Model
030
035
040
045
050
055
060
065
070
075
080
090
100
110
120
130
140
150
161
170
180
190
210
225
240
M1M2M3M4M5M6M7M8M1M2M3M4M5M6M7M8
BrownBrownBrown BrownDark Grn Dk Prple BlackBlack
BrownBrownBrown BrownDark Grn Dk Prple BlackBlack
BrownBrownBrown BrownDark Grn Dk Prple BlackBlack
BrownBrownBrown BrownDark Grn Dk Prple Dk Prple Black
BrownBrownBrown BrownDark Grn Dk Prple Dk Prple Black
BrownBrownBrown BrownDark Grn Dk Prple Dk Prple Black
BrownBrownBrown BrownDark Grn Dk Prple Dk Prple Black
BrownBrownBrown BrownDark Grn Dk Prple Dk Prple Black
BrownBrownBrown BrownDark Grn Dk Prple Dk Prple Black
BrownBrownBrown BrownDark Grn Dark Grn Dark Grn Dark Grn
BrownBrownBrown BrownDark Grn Dark Grn Dark Grn Dark Grn
BrownBrownBrown BrownDark Grn Dark Grn Dark Grn Dark Grn
BrownBrownBrown BrownDark Grn Dark Grn Dark Grn Dark Grn
RedRedBrownBrownBrownBrownDark Grn Dark Grn Dk Prple Dk PrpleRedRed
NOTE: 1. Full load ow minimum is the minimum allowable ow at full load conditions, and/or for a constant ow system.
2. Part Load ow minimum is the minimum allowable ow for a partially loaded unit, which is only applicable a variable ow system.
Flow may only be reduced proportionally to load, i.e. a ow reduction of 25% from the design ow rate is only allowable if the chiller
load is reduced by 25%.
Full Load Minimum Flow
(Applies to Constant and
Variable Flow Systems)
Minimum Flow Rate
1
Fixed and Variable Flow Systems
Nominal Flow RateMaximum Flow Rate
IOM 1206-6 • TRAILBLAZER® MODEL AGZ CHILLERS 28 www.DaikinApplied.com
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