484 01 3700 01
December 2011
INSTALLATION INSTRUCTIONS
Cased N Coil, Horizontal
ENH4X
NOTE
: Read the entire instruction manual before starting
the installation.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS
1
. . . . . . . . . . . . . . . . . . . . . . . .
INTRODUCTION
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horizontal Right and Left with Pan Extension
3
. . . . . .
Furnace Attachment
3
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horizontal Attic
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horizontal Crawl Space
4
. . . . . . . . . . . . . . . . . . . . . . . . .
Refrigerant Lines
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connect Refrigerant Liquid and Suction Lines
4
. . . . . .
Connect Condensate Drain Line
5
. . . . . . . . . . . . . . . . .
Waste Line Connection
5
. . . . . . . . . . . . . . . . . . . . . . . . .
Model Number Identification
6
. . . . . . . . . . . . . . . . . . . . .
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service,
maintenance, or use can cause explosion, fire, electrical
shock or other conditions which may cause death, personal
injury or property damage. Consult a qualified installer,
service agency, or your distributor or branch for information
or assistance. The qualified installer or agency must use
factory--authorized kits or accessories when modifying this
product. Refer to the individual instructions packaged with
the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective
clothing and work gloves. Use quenching cloths for brazing
operations. Have fire extinguisher available. Read these
instructions thoroughly and follow all warnings or cautions
attached to the unit. Consult local building codes and the
current editions of the National Electrical Codes (NEC)
NFPA 70.
In Canada, refer to the current editions of the Canadian
Electrical Code CSA C22.1.
Recognize safety information. This is the safety--alert
symbol
. When you see this symbol on the unit and in
instructions or manuals, be alert to the potential for personal
injury.
Understand the signal words
DANGER
,
WARNING
and
CAUTION
. These words are used with the safety--alert
symbol.
DANGER
identifies the most serious hazards which
will
result in severe personal injury or death.
WARNING
signifies hazards which
could
result in personal injury or
death.
CAUTION
is used to identify unsafe practices, which
may
result in minor personal injury or product and property
damage.
NOTE
is used to highlight suggestions which
will
result in enhanced installation, reliability, or operation.
NOTE
: Nitrogen can leak out through the needle pierce
hole in the plugs. This does not indicate a leaking coil nor
warrant return of the coil.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Before installing, modifying or servicing system, always
turn off main power to system. There may be more than
one disconnect switch. Lock out and tag switch with a
suitable warning label.
!
WARNING
PERSONAL INJURY HAZARD
Failure to follow this caution may result in personal
injury.
This coil contains Nitrogen precharge of 15 PSIG.
Release of this pressure through the center of the
rubber plugs is required before removing the plugs.
CAUTION
!
CUT HAZARD
Failure to follow this caution may result in personal
injury.
Sheet metal parts may have sharp edges or burrs. Use
care and wear appropriate protective clothing and
gloves when handling parts.
CAUTION
!
