Daikin AGZ045E - Page 12

IOM 1206-7 • TRAILBLAZER
™
MODEL AGZ CHILLERS 10 www.DaikinApplied.com
InsTallaTIon and applICaTIon InformaTIon
Figure 22: Typical Piping, Shell and Tube Evaporator
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 sufcient 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 20.
3. A eld-supplied strainer that meets specication and
installation requirements of this manual.
Table 2: Strainer Data
Trailblazer™
Model
Strainer Size
in (mm)
Minimum
perforation size
in (mm)
Factory
Installed
Option
Field
Installed
Option
030-070E 2.5 (64) 0.063 (1.6) Y Y
075-130E 3.0 (76) 0.063 (1.6) Y Y
140-180E 4.0 (102) 0.063 (1.6) Y Y
190-240E 8.0 (203) 0.125 (3.175) N Y
Figure 23: Factory Installed Strainer
Figure 24: Strainer Pressure Drop
LEAVING FLUID
TEMP. SENSOR
VENT
3/8” PIPE PLUG
VIBRATION
ELIMINATOR
FLOW
SWITCH
GATE
VALVE
FLOW
FLOW
GATE
VALVE
OUTLET
DRAIN
BALANCING
VALVE
VIBRATION
ELIMINATOR
WATER
STRAINER
VALVED
PRESSURE
GAUGE
PROTECT ALL FIELD PIPING
AGAINST FREEZING
INLET
WELDED PIPE CONNECTIONS ARE NOT ALLOWED
BETWEEN THE STRAINER AND EVAPORATOR DUE TO THE
CHANCE OF SLAG ENTERING THE EVAPORATOR
2.5 in
3.0 in
4.0 in
8.0 in.
0.1
1.0
10.0
100.0
10.0 100.0 1000.0
Pressure Drop ( ft)
Flow Rate (gpm)