WaterFurnace Envision NDZ Series, Руководство по установке

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NSZ/NDZ INSTALLATION MANUAL
WARNING: There are 8 total (360°) turns on
the superheat adjustment stem from wide open
to fully closed. When adjusting the superheat
stem clockwise (superheat increase) and the
stop is reached, any further clockwise turning
adjustment will damage the valve.
Determining Subcooling
Measure the temperature of the liquid line on the 1.
small refrigerant line (liquid line) just outside the
split cabinet. This location will be adequate for
measurement in both modes unless a significant
temperature drop in the liquid line is anticipated.
Measure the liquid line pressure by attaching
2.
refrigerant gauges to the Schrader connection on the
liquid line service valve.
Convert the pressure obtained in Step 2 to the
3.
saturation temperature by using the R-410A Pressure/
Temperature Conversion Chart.
Subtract the temperature in Step 1 from the
4.
temperature in Step 3. The difference will be the
subcooling value for that unit. Refer to the Operating
Parameters tables for subcooling ranges at specific
enter water conditions.
Refrigeration cont.
Line Set Sizes
NOTES: * The "Charge Amount with NAH Air Handler" column is based on the charge amount for a NAH Air Compressor Section/Split.
Additional charge will have to be added accordingly for line set length.
After Charge is added adjustments can be made to get appropriate subcooling and superheat.
Additional charge for R-410A is 0.50 oz. per ft. for 3/8 in. and 1.0 oz. per ft. for 1/2 in. tube.
Unit
Size Air
Handler
20 feet 40 feet 60 feet Factory
Charge
(oz.)
*Charge Amount
with NAH Air
Handler (oz.)
Suction Liquid Suction Liquid Suction Liquid
022
NAH022 5/8” OD 3/8” OD 5/8” OD 3/8” OD 3/4” OD 3/8” OD 56 78
030 NAH030 5/8” OD 3/8” OD 3/4” OD 3/8” OD 3/4” OD 3/8” OD 56 78
036 NAH036 5/8” OD 3/8” OD 3/4” OD 3/8” OD 3/4” OD 1/2” OD 56 86
042
NAH042 3/4” OD 3/8” OD 3/4” OD 3/8” OD 7/8” OD 1/2” OD 74 99
048 NAH048 3/4” OD 3/8” OD 7/8” OD 3/8” OD 7/8” OD 1/2” OD 90 115
060
NAH060 7/8” OD 1/2” OD 7/8” OD 1/2” OD 1-1/8” OD 1/2” OD 92 112
070 NAH060 7/8” OD 1/2” OD 7/8” OD 1/2” OD 1-1/8” OD 1/2” OD 108 132
026 NAH026 5/8” OD 3/8” OD 3/4” OD 3/8” OD 3/4” OD 1/2” OD 52 74
038 NAH036 3/4” OD 3/8” OD 3/4” OD 3/8” OD 3/4” OD 1/2” OD 56 86
049 NAH048 3/4” OD 3/8” OD 7/8” OD 3/8” OD 7/8” OD 1/2” OD 90 115
064
NAH060 7/8” OD 1/2” OD 7/8” OD 1/2” OD 1-1/8” OD 1/2” OD 92 112
072 NAH060 7/8” OD 1/2” OD 7/8” OD 1/2” OD 1-1/8” OD 1/2” OD 104 132
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