Nortek C6BA Series, Installation Instructions Manual

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3
COIL INSTALLATION
WARNING:
ELECTRICAL SHOCK, FIRE OR
EXPLOSION HAZARD
Failure to follow safety warnings exactly could result
in serious injury or property damage.
Improper servicing could result in dangerous
operation, serious injury, death or property damage.
• Before servicing, disconnect all electrical power
to the equipment.
• When servicing controls, label all wires prior to
disconnecting. Reconnect wires correctly.
• Verify proper operation after servicing.
CAUTION:
The coil must be level to ensure proper condensate
drainage. An unlevel installation may result in
structural damage, premature equipment failure,
or possible personal injury.
General Information
C6 Series indoor cased coils are designed for upflow,
downflow, or horizontal applications when used in conjunction
with a horizontal drain pan kit. Accessory kits are not required
for factory ready horizontal coils. See Table 1, (page 7)
or Table 2, (page 7) . Coils are equipped with braze type
refrigerant connections for easy installation.
• Check the coils orifice size and confirm that it’s suitable
for application with the intended outdoor unit. Depending
on application, additional installer supplied orifice or TXV
may be required.
• Optional cooling/heating equipment must be properly sized
and installed in accordance with the furnace manufacturer’s
specifications and approved recommendations.
• “Heating Only” furnace air circulators may have to be
replaced with multi-speed heating / cooling blowers to
upgrade the air delivery (CFM) when an add-on coil is
installed. Refer to Table 1 or Table 2 for coil specifications,
recommended CFM, and allowances for pressure drop
across the coil and filters.
• Verify that the air delivery of the furnace/air handler is
adequate to handle the static pressure drop of the coil,
filter, and duct work.
• If precise forming of refrigerant lines is required, a copper
tubing bender is recommended. Avoid sharp bends and
contact of the refrigerant lines with metal surfaces.
• Refrigerant lines should be wrapped with pressure sensitive
neoprene or other suitable material where they pass against
sharply edged sheet metal.
• Horizontal installations require a horizontal drain pan kit
to be installed. See Table 1 for available part numbers.
• Close-off plates are available in some air filter kits. Refer
to the Replacement Parts List for available part numbers.
Install the necessary close-off plates around the refrigerant
lines and drain line where required. Reinstall all inner and
outer panels of the furnace/air handler that were previously
removed when installing the indoor coil.
Upflow Installations
1. Disconnect all electrical power to the furnace.
2. Install the coil case on the furnace air discharge opening
and level it as needed to ensure proper condensate
drainage. If needed, use one of the coil case adapter
kits to match the coil to the air discharge opening. See
Figure 2 (page 6)
for coil dimensions.
3. Seal the enclosure as required to minimize air leakage.
4. Connect the refrigerant lines as outlined in the Refrigerant
Line Connection section.
Horizontal Installations
C6 coils can be installed horizontally, but it is required that
the furnace and coil cabinets be securely mounted together
before setting in place. A horizontal drain pan kit must also
be installed under the coil. Refer to Table 1 for available
part numbers.
Horizontal Left Installations
1. Disconnect all electrical power to the furnace.
2. Remove the coil access door.
3. Remove the plug and knockout from one of the threaded
holes in the horizontal drain pan.
CAUTION:
The knockout must be removed and discarded
to ensure proper condensate drainage. Improper
drainage may result in structural damage, premature
equipment failure, or possible personal injury.
4. Install plug (from horizontal drain pan) in the open drain
hole in the drain pan at the bottom of the unit. This will
block bypass air from entering the system.
5. Remove the drain line knockout from the coil access door.
This will allow access to the horizontal drain.
6. Install drain pan extension (if supplied with unit).
NOTE:
The holes in the drain pan extension should be
pressed over the nibs molded into the drain pan. Which
pair of holes to use will depend on whether the unit is
installed horizontal left or horizontal right. Verify proper
positioning for clearance thru the top of the coil cabinet
before affixing. The drain pan extension can be installed
and removed after the ductwork has been attached to the
cased coil.
7. Connect the refrigerant lines as outlined in the Refrigerant
Lines Connection section.
8. Seal the enclosure as required to minimize air leakage.
9. Reinstall the coil access door.
10. Restore electrical power to the furnace.
Horizontal Right Installations
1. Disconnect all electrical power to the furnace.
2. Remove the coil access door.
3. Remove the plug and knockout from one of the threaded
holes in the horizontal drain pan.