background image

Installation Instructions

NOTE: 

Read  the  entire  instruction  manual  before  starting  the

installation.

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.

INTRODUCTION

The ENH4X is a horizontal, multi-use furnace coil (

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 coil is available

in  sizes  024  through  060.  All  models  are  equipped  with  a

factory-installed TXV and are used with R-410A refrigerant systems.

ENH4X
Cased N Coil, Horizontal

Heating – Cooling

WARNING

!

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.

CAUTION

!

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

!

ENVIRONMENTAL HAZARD

Failure to follow this caution may result in environmental damage.
Federal  regulations  require  that  you  do  not  vent  refrigerant  to  the

atmosphere. Recover during system repair or final unit disposal.

Summary of Contents for ENH4X Series

Page 1: ...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 INTRODUCTION The ENH4X is a horizontal multi use furnace coil Fig 1 With the use of field supplied transition duct these furnace coils can also be applied to other similar horizontal furnaces on the mark...

Page 2: ...V designed only for use with R 410A refrigerant Use only with outdoor units designed for R 410A NOTE All TXV S have preset superheat settings and are not field adjustable Cabinet Sweating If the unit is installed in a garage attic or other unconditioned space special attention may need to be given to the potential of cabinet sweating Condensate Management With proper installation these coils will ...

Page 3: ...stall and orientate the components as shown in Fig 4 Use Table 1 and Table 2 to identify which Application Letters A through J are acceptable for the furnace width and coil width being used in a specific situation Orientate and configure the furnace and coil as shown in each application A180215A Fig 4 Horizontal Installation Applications HORIZONTAL RIGHT INSTALLATIONS Acceptable for Air Conditione...

Page 4: ... Fig 5 A05419 Fig 5 Mount Attachment Plates 3 Connect furnace snugly against coil casing 4 Use self tapping screws to attach furnace Fig 6 5 Seal joint between coil casing and furnace to create air tight seal using locally approved materials A05420 Fig 6 Attach Coil to Furnace NOTE If the coil and furnace are different widths refer to Fig 4 and Table 1 Table 2 HORIZONTAL ATTIC INSTALLATION Constru...

Page 5: ...frigerant grade Always evacuate tubing and reclaim refrigerant when making connections or flaring tubing Leak check connections before insulating entire suction line See Table 3 for coil connection tube size 1 Remove cabinet access door 2 Remove rubber plugs suction plug then liquid plug from coil stubs using a pulling and twisting motion Hold coil stubs steady to avoid bending or distorting 3 Rem...

Page 6: ...ensate in this external condensate pan should be drained to a noticeable place As an alternative to using an external condensate pan some localities may allow the running of a separate 3 4 in 19 mm condensate line with appropriate trap per local code to a place where the condensate will be noticeable The owner of the structure must be informed that when condensate flows from secondary drain or ext...

Reviews: