Daikin McQuay AGZ-D 25, Руководство по эксплуатации и техническому обслуживанию

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OMM 1087-1 AGZ 025D through 190D 9
automatic through the ambient sensing
thermostat that energizes the evaporator heater
cable for protection against freeze-up. Unless the evaporator is drained in the winter, the
disconnect switch to the evaporator heater
must not be open.
Operating/Standby Limits
•
Maximum standby ambient air temperature, 130
°
F (55
°
C)
•
Maximum operating ambient air temperature 105
°
F (40.6
°
C)
•
Minimum operating ambient temperature (standard), 35
°
F (2
°
C)
•
Minimum operating ambient temperature (with optional low-ambient control), -10
°
F (-23.3
°
C)
•
Leaving chilled water temperature, 40
°
F to 60
°
F (4.4
°
C to 15.6
°
C)
•
Leaving chilled fluid temperatures (with anti-freeze), 15
°
F to 60
°
F (-9.4
°
C to 15.6
°
C)
•
Chilled water Delta-T range, 6 degrees F to 16 degrees F (3.3 degrees C to 8.9 degrees C)
•
Part load minimum flow for variable flow systems, varies with unit size; see Table 8 on page 11.
•
Maximum operating inlet fluid temperature, 76
°
F (24
°
C)
•
Maximum non-operating inlet fluid temperature, 100
°
F (38
°
C).
Pressure Drop Curves
Evaporator pressure drop curves on the
following page. They apply to either packaged
or remote evaporator applications. Figure 1,
Evaporator Pressure Drops. See following page
for curve cross-reference on the next page
contains the evaporator reference letter and the
minimum and maximum flows allowed for
each unit.
Occasionally the same evaporator is used on
multiple units resulting in overlapping lines.
The minimum and maximum flows for a given
unit will be at the point where the unit
reference number appears.