General Information - Nordyne R-22 Installation Instructions Manual

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1. GENERAL INFORMATION

Standard cased coils are designed for upflow/
downflow applications or horizontal applications
when used in conjunction with our horizontal
drain pan kit (See page 5). Accessory kits are
not required for factory ready horizontal coils.
Coils are equipped with braze type refrigerant
connections for easy installation.
Read the installation manual supplied with the
outdoor unit for refrigerant line connection pro-
cedure, required line sizes, and other informa-
tion pertaining to the system installation.
1.
Make certain that the air delivery of the
furnace/air handler is adequate to handle
the static pressure drop of the coil, filter, and
duct work.
2.
Check the orifice size of the coil's expan-
sion device and confirm that it is suitable for
application with the intended outdoor unit.
NOTE: Some C4 series coils (R-410A re-
frigerant) employ a thermostatic expansion
valve (TXV) as the metering device (See
page 4).
H
3.
Where precise forming of the refrigerant
lines is required, a copper tubing bender
designed for the size lines used is recom-
mended. Avoid sharp bends and contact of
the refrigerant lines with metal surfaces.
4.
Refrigerant lines should be wrapped with
pressure sensitive neoprene or other suit-
able material where they pass through the
raw edges of holes.
5.
Coil must be level for proper condensate
drainage.
NOTE:
must be properly sized and installed in accor-
dance with the furnace manufacturer's specifi-
cations and approved recommendations. "Heat-
ing 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 Coil Speci-
fications for recommended CFM and allow for
pressure drop across the coil and filters.
A
B
Figure 1.
Optional cooling/heating equipment
3/4"
15
/
"
5
8
13
3
/
"
8
W
3

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This manual is also suitable for:

R-410a

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