Installation Manual

ManualsBrandsAirQuest ManualsCooling & Air Quality2.5 Ton 16 SEER 96% AFUE 80,000 BTU Gas Furnace and Air Conditioner System - Vertical

484 01 3601 02 8/9/17

Specifications subject to change without notice.

INSTALLATION INSTRUCTIONS

Cased N Coil, Upflow−Downflow

END4X, ENW4X

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 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

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

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

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..................................

INTRODUCTION

Use this instruction manual to install indoor coils on upflow or

downflow furnaces. Do not install coil in horizontal position. Coils

are enclosed in a painted casing have factory−installed TXV’s.

These coils are used with R−410A refrigerant systems.

Summary of content (6 pages)

PAGE 1
INSTALLATION INSTRUCTIONS Cased N Coil, Upflow−Downflow END4X, ENW4X 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.
PAGE 2
INSTALLATION S water blow−off These units can be installed in multiple configurations. Before installation, there are several performance requirements that must be considered because poor installation can negatively alter performance. This section will briefly discuss those factors. Airflow Airflow amount and distribution are vital to adequate system performance.
PAGE 3
Installation of Furnace Coils Upflow Cased Coil Installation NOTE: On upflow installations where the indoor coil is placed in an unconditioned space, a 6 inch (152 mm) wide piece of insulation should be applied and wrapped around the outside of coil casing and supply duct contact point. 1. Set coil in place on upflow furnace discharge air opening. See Figure 2. 2. When coil front width matches furnace front width, the coil can be placed directly on furnace. 3.
PAGE 4
5. Place furnace on top of N−coil casing, or field−supplied furnace shelf. 2 1/4” (57) ALTERNATIVE A TXV A thermal expansion valve is utilized in this coil design to optimize performance and comfort throughout the entire operating range of the system. Special attention needs to be taken to the TXV when installing the coil S Do not overheat valve. Temperatures that exceed 212_F (100_C) can harm valve performance. Use a wet cloth or heat sink when brazing.
PAGE 5
Refrigerant Line Connections ! WARNING PERSONAL INJURY HAZARD Failure to follow this warning could result in personal injury. Wear eye protection. Coil is factory charged with 15 psi nitrogen. The coil is under pressure and TXV screen is in place behind liquid line plug. DO NOT remove liquid line plug first, always remove the suction line plug first to depressurize the coil. NOTE: Factory nitrogen charge may escape past rubber plugs during storage.
PAGE 6
Figure 7 − Condensate Drain to Waste Line ! A10216 WARNING EXPLOSION HAZARD Failure to follow this warning could result in personal injury or death. Provide trap with air gap in drain line when connecting to waste (sewer) line.