Lennox AUD24AH2/A-D(U) Installation Instructions Manual page 33

X-Series Pre-Commissioning Checklist
Project Name :
Model #
Static Pressure:
Serial #
Existing Static Pressure Reading (
New Unit Static Pressure Reading (Fill in):
Static Pressure:
*If existing unit has a PSC motor installed and the static pressure is above 0.6, add supply and return duct as needed.
Existing Static Pressure Reading (
should not be above 0.6*)
Air Handler checklist, prior to install:
New Unit Static Pressure Reading (Fill in):
New Unit Holding Charge - double check the unit to make sure charge is holding prior to install
*If existing unit has a PSC motor installed and the static pressure is above 0.6, add supply and return duct as needed.
Check for Position of New Air Handler
Air Handler checklist, prior to install:
Dip switch settings for air flow Level (Fill in):
New Unit Holding Charge - double check the unit to make sure charge is holding prior to install
Run start AH only test static pressure in factory default Level 4 (Fill in):
Check for Position of New Air Handler
Adjust dip switch to the needed CFM at your current Static pressure
Dip switch settings for air flow Level (Fill in):
If default is too low increase the dip switch setting to your desired CFM See charts
Run start AH only test static pressure in factory default evel 4 (Fill in):
Adjust dip switch to the needed CFM at your current Static pressure
Lineset guidelines
If default is too low increase the dip switch setting to your desired CFM see charts
Accurately measure the existing refrigerant lines if they are over 31' and calculate the additional footage.
When brazing use Nitrogen purge throughout the process.
Lineset guidelines
Torque down the flare nuts per industry standards.
Accurately measure the existing refrigerant lines if they are over 25' and calculate the additional footage.
Pressurize the lineset only, leak test the fittings and the braze connections, and verify that the system is 100% leak free.
When brazing use Nitrogen purge throughout the process.
Open the valves on the indoor unit only. Pull triple evacuation on the indoor coil and linesets.
Torque down the flare nuts per industry standards.
Charging guidelines
Pressurize the lineset only, leak test the fittings and the braze connections, and verify that the system is 100% leak free.
Open the valves on the indoor unit only. Pull triple evacuation on the indoor coil and linesets.
If the line set is over 31' add .32oz per foot.
Charging guidelines
ex. 50' line set is over by 19' multiply the overage 19' x .32 =6.08oz of additional charge is required
If the line set is over 31' add .32oz per foot.
Dip Switch setting for Capacity (Fill in):
ex. 50' line set is over by 19' multiply the overage 19' x .32 =6.08oz of additional charge is required
Communication Wiring guidelines
Dip Switch setting for Capacity (Fill in):
X-Series Pre-Commissioning Checklist
Project Name :
Checklist to prepare for commissioning, use prior to commissioning unit
Model #
Serial #
(Fill in):
should not be above 0.6*)
(Fill in):
Checklist to prepare for commissioning, use prior to commissioning unit
Upflow Horizontal-right* Horizontal-left
Horizontal-right
Y/N
Y/N
Horizontal-left Upflow
Lineset Length Added charge
______________ ____________(oz)
Added
Lineset Length
charge
____________(oz)
______________
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