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Pre-Commissioning
Due to our policy of continuous product innovation, some specifications may change without notification.
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PRE-COMMISSIONING
Start-Up / Checks
Start-Up Configuration
When connecting with DOAS system, ensure that all information in DOAS Installation Manual is read by installers and that the system is
configured as applicable per manufacturer requirements.
DANGER
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WARNING
•
Do not operate the unit without the aluminum filters installed. There is a risk of physical injury and / or death.
•
Do not run unit during construction phase. There is a risk of physical injury and / or death.
•
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system. These functions could interrupt proper target pressure control for the DOAS unit. (Fn7 would not be activated based on the DOAS
fan control setting if the outdoor unit is in defrost mode.)
•
Do not operate the unit without the aluminum filters installed. The filters prevent foreign objects such as leaves, birds, etc., from enter-
ing, which could damage internal components.
•
Do not run unit during construction phase. It could result in damage to internal components and void the warranty.
Checks Before Initial Start-Up
After the installation of the unit, check the following items. Once all below checks are fulfilled, and all panels are re-attached, only then can
the unit be powered up.
1. Installation: Check that the unit is properly installed to avoid abnormal noises and vibrations when starting up the unit.
• Verify diameter seal settings on the energy recovery wheel
• Check all fasteners, set-screws, and locking collars on the fans, bearings, drives, motor bases and accessories for tightness.
• Dirt can clog the filters during building construction. Replace any dirty pleated filters and clean the aluminum mesh filters in the intake hood.
• Verify proper drain trap installation.
2. Field wiring: Be sure that the field wiring has been carried out according to the instructions described in “Electrical System section on
pages 29-36, according to the wiring diagrams, and to local, state, and federal codes.
3. Power supply voltage: Check the power supply voltage on the local supply panel. The voltage must correspond to the voltage on the
identification label of the unit.
4. Ground wiring: Be sure that the ground wires have been connected properly and that the ground terminals are tightened.
5. Fuses, circuit breakers, or protection devices: Check that the fuses, circuit breakers, or the locally installed protection devices are of the
size and type specified in the Electrical System section on pages 29-36. Be sure that neither a fuse nor a protection device has been
bypassed.
6. Internal wiring: Visually check the control box and the inside of the unit for loose connections or damaged electrical components.
7. Pipe size and pipe insulation: Be sure that correct pipe sizes are installed, and that the pipes are fully and properly insulated.
8. Service valves: Be sure that all service valves are open.
9. Damaged equipment: Check the inside of the unit for damaged components or pipes.
10. Refrigerant leak: Check the inside of the unit for refrigerant leaks. If there is a refrigerant leak, try to repair the leak. If the repair is un-
successful, call your local dealer.
Do not touch refrigerant that has leaked out from refrigerant piping connections. This may result in
frostbite.
11. Oil leak: Check the compressor for oil leaks. If there is an oil leak, try to repair the leak. If the repairing is unsuccessful, call the local
manufacturer representative.
12. Air inlet / outlet: Check that the air inlet and outlet of the unit is not obstructed by paper, cardboard, or any other material.
13. Record the field-settings and contents: Record them on the accessory REQUEST FOR THE INDICATION label and attach the label on
the back of the front panel.
14. Record the installation date: Record the installation date on the accessory REQUEST FOR THE INDICATION label and attach the label
on the back of the front panel.
