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Duct Connections
Minimum 24 gauge galvanized sheet metal
duct (supplied by the installer) is recommended
to be attached to duct collars provided at the
unit air outlet and inlet (provided with plenum
option only), see Figures 5, 6,7 and 8 for duct
collar dimensions.
To attach, slip the duct over the outlet collar
and fasten the duct and collar together with
screws or rivets, as shown on Figure 3 Duct
Work. Field-supplied transition fittings should
be used in installations where unit duct
collars do not match discharge air-grille
collars.
A return duct with plenum can be attached
to the return air collar provided at the return
plenum. To attach, slip the return duct over
the return air collar and fasten the duct and
collar together with screws.
Piping
Coil connections
To complete piping connections, attach the
water piping with famale connections copper
tube to the coil header and then sweat the
connection area thoroughly. For optional
threaded connections, attach the water
piping with MPT connection to the coil
header and then fasten the connection. The
water inlet is on the bottom and water outlet
on the top of the coil. Coil connection size
and coil connection locations are given on
Figure 4. Refer to submittals for specific
connection locations.
Condensate Drain Connections
Either PVC pipe or steel pipe with 3/4-inch
FPT connection can be used as a drain line.
Attach the drain line to the drain connection
with tape-sealant to prevent leakage. A drain
line pitch with a minimum slope of 1:50 is
recommended.
7
Electrical Connections
For wiring and installion, refer to the wiring
diagram decals on each unit located on coil
end panel. Also see Figure 9 for wiring
diagrams.
A grounding point, which must be properly
connected to the building grounding system,
has been provided with a mark within the
Junction Box.
All electrical connections must comply with
local electrical codes and ordinances.
WARNING: Disconnect electrical power
source and secure in disconnected
position before servicing the unit. Failure
to do so may result in personal injury or
death from electrical shock.
CAUTION: Use only copper conductors
for wiring connections. Unit terminals are
not designed to accept other types of
wiring. Aluminum or other conductors
may cause overheating and unit damage.
Notice: The reserved space for power
supply cords is 20 mm in diameter.
Notice: Table shows the range of the fan
coil units with different heater options.
Please refer to the current and use the
proper power supply cords.
HCCA-SVX01A-EN
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