28
Connect the hot water heating supply to the
bottom of the coil and return to the top.
Figure 15 - Hot & Chilled Water Piping
Water coils should not be subjected to
entering air temperatures below 38°F to
prevent coil freeze-up. If air temperature
across the coil is going to be below this value,
use a glycol solution to match the coldest air
expected.
Water supply lines must be insulated,
properly fastened, drained, and supported
according to local code requirements.
Chilled Water Coil
Factory installed four, six or eight row chilled
water cooling coils can be factory mounted.
These coils are supplied from a building
chilled water source. All valve controls for
the cooling coil operation are field supplied
and field installed.
Table 6 - Chilled Water Coil Sweat
Connection Sizes
Model (V3-)
Supply and Return
Connection Size (OD)
A
1 1/8"
B
1 3/8"
C
1 5/8"
D & E
2 1/8"
Connect the chilled water supply to the
bottom of the coil and return to the top.
Water supply lines must be insulated with
closed cell type pipe insulation or insulation
that includes a vapor barrier. Lines should be
properly fastened, drained and supported
according to local code requirements, and job
specifications.
Piping shall be in accordance with
national and local codes. Pressure
limiting devices, backflow preventers
and all other safety requirements are
the sole responsibility of the installing
contractor.
WARNING
Installing Contractor is responsible for
proper sealing of the water piping
entries into the unit Failure to seal the
entries may result in damage to the
unit and property.
CAUTION
