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Table 3 – FZ4A Air Delivery Performance Correction Component Pressure Drop (in. wc) at Indicated Airflow (Dry to Wet Coil)
500
600
UNIT SIZE
024
0.034
0.049
- -
036
- -
048
- -
060
- -
061
HEATER
ELEMENTS
0
1
2
3
4
R- 410A QUICK REFERENCE GUIDE
R- 410A refrigerant operates at 50- 70 percent higher pressures than R- 22. Be sure that servicing equipment and replacement
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components are designed to operate with R- 410A refrigerant.
R- 410A refrigerant cylinders are rose colored.
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Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400.
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R- 410A refrigerant systems should be charged with liquid refrigerant. Use a commercial type metering device in the manifold
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hose when charging into suction line with compressor operating
Manifold sets should be 700 psig high side and 180 psig low side with 550 psig low- side retard.
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Use hoses with 700 psig service pressure rating.
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Leak detectors should be designed to detect HFC refrigerant.
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R- 410A refrigerant, as with other HFCs, is only compatible with POE oils.
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Vacuum pumps will not remove moisture from oil.
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Do not use liquid- line filter driers with rated working pressures less than 600 psig.
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Do not leave R- 410A refrigerant suction line filter driers in line longer than 72 hours.
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Do not install a suction- line filter drier in liquid line.
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POE oils absorb moisture rapidly. Do not expose oil to atmosphere.
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POE oils may cause damage to certain plastics and roofing materials.
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Wrap all filter driers and service valves with wet cloth when brazing.
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A factory approved liquid- line filter drier is required on every unit.
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Do NOT use an R- 22 TXV.
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If indoor unit is equipped with a R- 22 TXV or piston metering device, it must be changed to a hard- shutoff R- 410A refrigerant
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TXV.
Never open system to atmosphere while it is under a vacuum.
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When system must be opened for service, recover refrigerant, evacuate then break vacuum with dry nitrogen and replace filter
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driers. Evacuate to 500 microns prior to recharging.
Do not vent R- 410A refrigerant into the atmosphere.
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Do not use capillary tube coils.
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Observe all warnings, cautions, and bold text.
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All indoor coils must be installed with a hard- shutoff R- 410A refrigerant TXV metering device.
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Copyright 2018 CAC / BDP D 7310 W. Morris St. D Indianapolis, IN 46231
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
700
800
900
0.063
0.076
0.089
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
Table 4 – Electric Heater Static Pressure Drop (in. wc)
FZ4A024 - 036
EXTERNAL STATIC
PRESSURE
kW
CORRECTION
0
+.02
3, 5
+.01
8, 10
9, 15
20
CFM
1000
1100
1200
1300
- -
- -
- -
- -
0.070
0.080
0.090
0.099
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
HEATER
ELEMENTS
0
2
0
3
–.02
4
–.04
6
Edition Date: 04/18
10
1400
1500
1600
1700
- -
- -
- -
- -
- -
- -
- -
- -
0.063
0.070
0.076
0.083
- -
- -
0.049
0.054
- -
- -
0.027
0.031
FZ4A048 - 060
kW
0
8, 10
9, 15
20
18, 24, 30
Catalog No: IM- FZ4ANP- 02
1800
1900
2000
- -
- -
- -
- -
- -
- -
- -
- -
0.090
0.059
0.065
0.070
0.035
0.039
0.043
EXTERNAL STATIC
PRESSURE
CORRECTION
+.04
+.02
0
–.02
–.10
Replaces: IM- FZ4ANP- 01
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