Installation Manual

484 01 3701 05 4/18/18
Specifications subject to change without notice.
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 1...................................
INSTALLATION 2....................................
Horizontal Right and Left with Pan Extension 2.........
Furnace Attachment 4..............................
Horizontal Attic 4................................
Horizontal Crawl Space 4...........................
Refrigerant Lines 4................................
Connect Refrigerant Liquid and Suction Lines 4.........
Condensate Drain Line Connection 5..................
Waste Line Connection 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
!
UNIT OR PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in property damage.
Take precautions to ensure Aluminum tubes do not come in
direct contact or allow for condensate run off with a dissimilar
metal. Dissimilar metals can cause galvanic corrosion and
possible premature failure.
CAUTION
!
INTRODUCTION
The ENH4X is a horizontal, multi−use furnace coil (see Fig. 1).
With the use of field−supplied transition duct, these furnace coils
can also be applied to other similar horizontal furnaces on the
market. The ENH4X is available in sizes 024 through 060. All
models are equipped with a factory−installed TXV and are used
with R−410A refrigerant systems.