29
NOTICE:
If the indoor temperature is
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electric heat/furnace to bring the temperature up.
2. Note the measured Liquid Pressure, Pliq =
______psig, as measured from the liquid (small)
service valve. Use the Temperature Pressure
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temperature for R-410A at the measured liquid
pressure.
Liquid Saturation Temperature, SAT°= _____°F
[_____°C].
3. Note the liquid line temperature, Liq° = _____°F
[_____°C], as measured from a temperature
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the unit on the copper liquid line (small line).
It is recommended to use a calibrated clamp-
on temperature probe or an insulated surface
thermocouple.
4. Subtract the liquid line temperature from the
saturation temperature to calculate subcooling.
SAT°_____°F [_____°C] - Liq°_____°F [_____°C]
= SC°_____°F [_____°C]
5. Adjust charge to obtain the specified subcooling
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the listed requirement for the given outdoor
temperature, add charge. If the measured
subcooling level is above the listed requirement
for the given outdoor temperature, remove
charge.
5.0 SYSTEM START-UP & REFRIGERANT CHARGING
5.4.5 R-410A Temperature
Pressure Chart
5.5 Completing Installation
• Disconnect the hoses from the pressure ports. Replace
the pressure port caps and tighten adequately to seal
caps.
Do not overtighten.
• Replace the service valve top caps finger-tight and then
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Do not
overtighten.
• Replace control box cover and service panel and install
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• Configure thermostat per the thermostat installation
instructions and set to desired mode and temperature.
SATURATION
TEMP
(Deg. F)
[Deg. C]
R-410A
PSIG
SATURATION
TEMP
(Deg. F)
[Deg. C]
R-410A
PSIG
SATURATION
TEMP
(Deg. F)
[Deg. C]
R-410A
PSIG
SATURATION
TEMP
(Deg. F)
[Deg. C]
R-410A
PSIG
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Charging