Carrier CNPVU2417ACA, CNPVU2414ACA, CNPVU3017ACA, CNPVU3117ACA, CNPVU3617ACA Installation Instructions Manual

CNPVU
CNRVU

Installation Instructions

NOTE: Read the entire instruction manual before starting the

installation.

TABLE OF CONTENTS

PAGE

SAFETY CONSIDERATIONS 1.........................

INTRODUCTION 1...................................

INSTALLATION 2....................................

Procedure 1 — Inspect Equipment 2....................

Procedure 2 — Select Installation 3....................

Procedure 3 — Installation of Evaporator Coil 4...........

Procedure 4 — Connect Refrigerant Piping 6.............

Procedure 5 — Connect Refrigerant Liquid

and Suction Lines 6....................

Procedure 6 — Condensate Drain Line Connection 7.......

Procedure 7 — Humidifier Application 8................

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.

on

Uncased Coils

Upflow - Downflow

Heating - Cooling

!

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury
or death.

Before installing or servicing system, always turn off main
power to system. There may be more than one disconnect
switch. Tag disconnect switch with a suitable warning label.
Turn off accessory heater power if applicable.

!

CAUTION

UNIT OR PROPERTY DAMAGE HAZARD

Failure to follow this caution may result in product or
property damage.

This coil contains Nitrogen precharge of 15 PSI. 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.

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.

INTRODUCTION

Use this instruction manual to install indoor coils on upflow or
downflow furnaces. (See Fig. 1.) Do not install coil in horizontal
position. Models CNPVU/CNRVU have factory−installed
thermostatic expansion valves (TXVs). CNPVU models are used
with Puronr refrigerant (R410A) systems and CNRVU models are
used with R−22 systems.

INSTALLATION

These units can be installed in either upflow or downflow
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.

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.

S Place filter dryer near ID unit to reduce the risk of debris

clogging the valve.

S Make sure TXV bulb is securely fastened and wrapped in the

indentation on heater tube.

CNPVU Models:
These coils have a factory−installed hard−shutoff TXV designed

only for use with R−410A refrigerant. Use only with outdoor units
designed for R−410A.

CNRVU Models:

These coils have a factory−installed hard−shutoff TXV designed
only for use with R−22 refrigerant. Use only with outdoor units
designed for R−22.

NOTE: All TXVs have preset superheat settings and are not
field−adjustable.

Airflow

Airflow amount and distribution are vital to adequate system
performance. Problems that can be experienced with incorrect
airflow include:

S low system performance

S restricted TXV

S frosted coil

S poor humidity control

S water blow−off

When attaching the coil and building the plenum, pay special
attention to the effect these details will have on airflow. After
system start−up, check the cfm to insure that it is correct.
(Generally, the cfm should be 350 to 400 cfm/ton during normal
cooling operation.)

Condensate Management

With proper installation, these coils will manage the condensate
without blow−off into the duct work. See detailed instructions for
more info.

Procedure 1 — Inspect Equipment

File claim with shipper if equipment is damaged.
The following parts are included with this coil (See Fig. 1),

depending on your application different components will be
required.

COMPONENT QUANTITY

Support Rails 2

Collar 1

Header Plate 1

Grommets 2

Extension Air Baffles 2

Header Plate
1 pc.

Support Rails
2 pcs.

Extension Air Baffles
2 pcs. (Attached to coil)

Uncased N-coil

Collar
1 pc.

A06362

Fig. 1 − Uncased N−Coil Components

2

Procedure 2 — Select Installation

Select and follow the installation instruction that best suits your needs:

Uncased N - Coil

Applications

Replacement

Applications

Cased

Cased

Applications

Applications

Cased “ A ” Cased “ N ” Uncased “ A ”

Cased “ A ”

Old CD5

Follow

procedur e

3A

Cased “ N ”

Old CK5

Follow

procedur e

3B

Plenum

Applications

Uncased “ A ”

Old CC5

Follow

procedur e

3C

N-Coil

Kit Casing

Applications

Follow

procedur e

3D

New

Applications

Plenum

Applications

Follow

procedur e

3E

A06363

Fig. 2 − Uncased N−Coil Applications

Table 1 – CNPVU Uncased Coil Information

MODEL NUMBER TONNAGE

COIL SIZE (IN.) COLLAR SIZE (IN.)

Depth Width Depth Width Liquid Suction

CNPVU1814A(C,T,L)A 1-1/2 19-1/8 13-1/2 19-3/8 12-7/8 3/8 5/8 KCAKC2601ECC
CNPVU1917A(C,T,L)A 1-1/2 19-1/8 16-3/4 19-3/8 16-1/4 3/8 3/4 KCAKC3001ECC
CNPVU2414A(C,T,L)A 2 19-1/8 13-1/2 19-3/8 12-7/8 3/8 5/8 KCAKC2601ECC
CNPVU2417A(C,T,L)A 2 19-1/8 16-7/8 19-3/8 16-1/4 3/8 5/8 KCAKC2701ECC
CNPVU3014A(C,T,L)A 2-1/2 19-1/8 13-1/2 19-3/8 12-7/8 3/8 3/4 KCAKC2601ECC
CNPVU3017A(C,T,L)A 2-1/2 19-1/8 16-7/8 19-3/8 16-1/4 3/8 3/4 KCAKC2701ECC
CNPVU3117A(C,T,L)A 2-1/2 19-1/8 16-3/4 19-3/8 16-1/4 3/8 3/4 KCAKC3101ECC
CNPVU3617A(C,T,L)A 3 19-1/8 16-7/8 19-3/8 16-1/4 3/8 3/4 KCAKC2701ECC
CNPVU3621A(C,T,L)A 3 19-1/8 20-1/4 19-3/8 19-5/8 3/8 3/4 KCAKC2801ECC

CNPVU37171A(C,T,L)A 3 19-1/8 16-3/4 19-3/8 16-1/4 3/8 7/8 KCAKC3201ECC

CNPVU4221A(C,T,L)A 3-1/2 19-1/8 20-1/4 19-3/8 19-5/8 3/8 7/8 KCAKC2801ECC
CNPVU4324A(C,T,L)A 3-1/2 19-1/8 23-3/4 19-3/8 23-1/8 3/8 7/8 KCAKC3301ECC
CNPVU4821A(C,T,L)A 4 19-1/8 20-1/4 19-3/8 19-5/ 3/8 7/8 KCAKC2801ECC
CNPVU4824A(C,T,L)A 4 19-1/8 23-3/4 19-3/8 23-1/8 3/8 7/8 KCAKC2901ECC
CNPVU6024A(C,T,L)A 5 19-1/8 23-3/4 19-3/8 23-1/8 3/8 7/8 KCAKC2901ECC
CNPVU6124A(C,T,L)A 5 19-1/8 23-3/4 19-3/8 23-1/8 3/8 7/8 KCAKC3401ECC

COIL CONNECTION

TUBE SIZE (IN.)

KIT CASING

Model #

Table 2 – CNRVU Uncased Coil Information

MODEL NUMBER TONNAGE

COIL SIZE (IN.) COLLAR SIZE (IN.)

Depth Width Depth Width Liquid Suction

CNRVU1814A(T,L)A 1-1/2 19-1/8 12-1/4 19-3/8 12-1/2 3/8 5/8 KCAKC2601ECC
CNRVU2414A(T,L)A 2 19-1/8 12-5/16 19-3/8 12-9/16 3/8 5/8 KCAKC2601ECC
CNRVU2417A(T,L)A 2 19-1/8 16-7/8 19-3/8 16-1/4 3/8 5/8 KCAKC2701ECC
CNRVU3014A(T,L)A 2-1/2 19-1/8 12-5/16 19-3/8 12-5/8 3/8 3/4 KCAKC2601ECC
CNRVU3017A(T,L)A 2-1/2 19-1/8 16-7/8 19-3/8 16-1/4 3/8 3/4 KCAKC2701ECC
CNRVU3617A(T,L)A 3 19-1/8 15-5/8 19-3/8 15-15/16 3/8 3/4 KCAKC2701ECC
CNRVU3621A(T,L)A 3 19-1/8 20-1/4 19-3/8 19-5/8 3/8 3/4 KCAKC2801ECC
CNRVU4221A(T,L)A 3-1/2 19-1/8 19 19-3/8 19-5/16 3/8 7/8 KCAKC2801ECC
CNRVU4821A(T,L)A 4 19-1/8 19 19-3/8 19-5/16 3/8 7/8 KCAKC2801ECC
CNRVU4824A(T,L)A 4 19-1/8 23-3/4 19-3/8 23-1/8 3/8 7/8 KCAKC2901ECC
CNRVU6024A(T,L)A 5 19-1/8 22-5/8 19-3/8 22-7/8 3/8 7/8 KCAKC2901ECC

For the 11th digit position in the model number; C = standard copper, L = Aluminum and T = tin-plated copper

COIL CONNECTION

TUBE SIZE (IN.)

KIT CASING

Model #

3