www.DaikinApplied.com 25 IOM 1207-6 • TRAILBLAZER
®
MODEL AGZ CHILLERS
Liquid Line Solenoid Valve
The liquid line solenoid valves are supplied as part of the
Refrigerant Specialties Kit with a DIN connector. These 120
volt valves must be located within 3 feet of the evaporator.
Field supplied wiring must be connected to the terminal block
inside the AGZ-E control box via a eld-supplied junction
box and #14 ga. wiring. All wiring should be run in conduit as
required by local and national code. See Field Wiring Diagram
included in unit, or Typical Field Wiring Diagram on page 65
and page 66 for wiring schematic.
Service Pumpdown
The service pumpdown capacity of AGZ units with
microchannel condenser coils is less than the previous model
with tube and n coils. Care should be exercised to include
all equipment and lines when calculating the system charge
relative to the unit’s pumpdown (storage) capacity. While the
AGZ-E remote evaporators have an insignicant operating
charge, the amount of refrigerant in interconnecting refrigerant
piping can be considerable. Due to the decreased refrigerant
capacity of microchannel condenser coils, isolating refrigerant
charge in the condenser is not recommended for remote
evaporator applications with line sets exceeding the measured
lengths in Table 9.
WARNING
Failure to follow condenser volume limits when isolating
refrigerant charge in the condenser may result in unit
damage, personal injury, and unintentional loss of refrigerant
to atmosphere if condenser refrigerant volume exceeds
published capacity limits.
It is mandatory that the liquid line solenoid valve be located
close to the evaporator so that pumpdown does not have to
remove and store a large quantity of liquid refrigerant from the
liquid line.
Table 9: Maximum Line Set Length for Charge Isolation
Unit
Models
Max. Measured Line Set Length for
Field Charge Isolation
Feet
030E
Microchannel
25
035E 25
040E 55
045E 55
050E 55
055E 50
060E 50
065E 50
070E 50
075E 70
080E 70
090E 70
100E 70
110E 70
120E 70
130E 70
140E 75
150E 75
161E 75
170E 75
180E 75
191E 90
211E 90
226E 105
241E 105
To Next Page
Loading...
