Pre-Installation Considerations - Daikin VHF Installation And Maintenance Manual

1 . To prevent damage to equipment, do not operate
supplementary heating and cooling during the construction
period.
2 . Inspect the carton for any specific tagging numbers
indicated by the factory per a request from the installing
contractor. At this time the voltage, phase and capacity
should be checked against the plans.
3 . Check the unit size against the plans to verify that the unit
is being installed in the correct location.
4 . Before installation, check the available dimensions of the
area where the unit is to be installed versus the dimensions
of the unit.
5 . Note the location and routing of water piping, condensate
drain piping, and electrical wiring. The locations of these
items are clearly marked on submittal drawings.
6 . The installing contractor will find it beneficial to confer with
piping, sheet metal, and electrical foremen before installing
any unit.
Note: Check the unit data plate for correct voltage with the
plans before installing the equipment.
WARNING
Make sure all electrical ground connections are made in
accordance with local code.
WARNING
The contractor shall cover the units to protect the machines
during finishing of the building. This is critical while
spraying fireproofing material on bar joists, sandblasting,
spray painting and plastering.
For Optimum Unit Performance and to Help Minimize
Noise and Vibration
● Adhere to the "Critical Dimensions" for locations of framing
and distances to the cabinet.
● Be sure there are no kinks and that the stainless steel
braided hoses do not come in contact with and vibrate on
chassis and cause noise.
● Be sure there are no kinks in the condensate drain hose
that can restrict flow of condensate to the drain riser.
● Ensure there is no metal-to-metal contact between return
air grille and cabinet and the discharge diffuser and the
cabinet, use provided gaskets.
● Air balancing in ducted applications is critical for proper
airflow at each diffuser.
● It is recommended that all unused openings in the cabinet
be sealed to eliminate any air leakage from the cabinet.
IM 986-11 • Vertical Stack WSHP
P
re
Figure 7: Typical side by side unit installation
NOTICE
Top air discharge units will require turning vanes and/
or a volume damper for proper air flow and balancing, to
minimize turbulence. These components must be field-
installed and furnished in accordance with SMACNA
guidelines.
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-i C
nstallation onsiderations
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