484 01 3600 00
April 2010
INSTALLATION INSTRUCTIONS
Cased N Coil, Upflow
−
Downflow
END4X, ENW4X
NOTE
: Read the entire instruction manual before starting
the installation.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS
1
. . . . . . . . . . . . . . . . . . . . . . . .
INTRODUCTION
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Airflow
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TXV
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspect Equipment
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Select Installation Procedure
2
. . . . . . . . . . . . . . . . . . . . . . .
Installation of Furnace Coils
3
. . . . . . . . . . . . . . . . . . . . . . . .
Connect Refrigerant Piping
5
. . . . . . . . . . . . . . . . . . . . . . . . .
Connect Refrigerant Liquid and Suction Lines
5
. . . . . . . . .
Refrigerant Metering Device
5
. . . . . . . . . . . . . . . . . . . . . . . .
Condensate Drain Line Connection
5
. . . . . . . . . . . . . . . . . .
Waste Line Connection
6
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Humidifier Application
6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model Number Identification
7
. . . . . . . . . . . . . . . . . . . . . . . .
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 cloth for brazing
operations. Have fire extinguisher available. Read these
instructions thoroughly and follow all warning or cautions
included in literature and attached to the unit. Consult local
building codes and the current editions of the National
Electrical Code (NEC) NFPA 70.
In Canada, refer to the current editions of the Canadian
Electrical Code CSA C22.1.
Recognize safety information. 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
,
CAUTION
, and
NOTE
. 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.
IMPORTANT
: Nitrogen can leak out through the hole that
the needle pierced 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
!
ENVIRONMENTAL HAZARD
Failure to follow this caution may result in environmental
pollution.
Remove and recycle all components or materials (i.e.
oil, refrigerant, etc.) before unit final disposal.
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
!
