Table of Contents
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CNPVU
CNRVU
NOTE: Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS
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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.
Installation Instructions
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!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
1
or death.
1
Before installing or servicing system, always turn off main
power to system. There may be more than one disconnect
2
switch. Tag disconnect switch with a suitable warning label.
2
Turn off accessory heater power if applicable.
3
4
6
!
6
UNIT OR PROPERTY DAMAGE HAZARD
7
Failure to follow this caution may result in product or
8
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.
!
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
on
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
thermostatic expansion valves (TXVs). CNPVU models are used
with Puronr refrigerant (R410A) systems and CNRVU models are
used with R−22 systems.
Uncased Coils
Upflow - Downflow
Heating - Cooling
WARNING
CAUTION
CAUTION
CNPVU/CNRVU
have
factory−installed
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Table of Contents
Related Manuals for Carrier CNPVU1814ACA
Summary of Contents for Carrier CNPVU1814ACA
-
Page 1: Table Of Contents
CNPVU Uncased Coils CNRVU Upflow - Downflow Heating - Cooling Installation Instructions NOTE: Read the entire instruction manual before starting the WARNING installation. TABLE OF CONTENTS ELECTRICAL SHOCK HAZARD PAGE Failure to follow this warning could result in personal injury SAFETY CONSIDERATIONS . -
Page 2: Installation
INSTALLATION Airflow Airflow amount and distribution are vital to adequate system These units can be installed in either upflow or downflow performance. Problems that can be experienced with incorrect configurations. Before installation, there are several performance airflow include: requirements that must be considered because poor installation can S low system performance negatively alter performance. -
Page 3: Procedure 2 - Select Installation
Procedure 2 — Select Installation Select and follow the installation instruction that best suits your needs: Uncased N - Coil Applications Replacement Applications Applications Plenum Cased Cased Plenum N-Coil Applications Kit Casing Applications Applications Applications Applications Cased Cased “ A ” “... -
Page 4: Procedure 3 - Installation Of Evaporator Coil
See Table 1 and 2 for dimensions and overhang options. Note instructions for placement of coil casing on furnace. Remove this portion Remove this portion For replacement applications using an existing CD5 coil assembly follow Procedure 3A. For replacement applications using an existing CK5 coil assembly follow Procedure 3B. - Page 5 4. Cut holes for liquid, suction and drain connections in the existing header panel. Use new header plate supplied with coil as template to locate holes. Align header plate to the header panel using the upper hole as indicated in Fig. 11. A06289 Fig.
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Page 6: Procedure 4 - Connect Refrigerant Piping
2. Remove old A−coil from plenum and discard coil. CAUTION 3. Place collar over furnace flanges inside of plenum (See Fig. AIR CONDITIONING COIL BEHIND THIS IMPORTANT: Insure that collar is level for proper drainage. PANEL. DO NOT DRILL OR CUT PANEL 4. -
Page 7: Procedure 6 - Condensate Drain Line Connection
4. Fit refrigerant lines into coil stubs. Wrap a heat sinking Procedure 6 — Condensate Drain Line material such as a wet cloth behind braze joints. Connection 5. Wrap TXV and nearby tubing with a heat−sinking material such as a wet cloth. CAUTION 6. -
Page 8: Procedure 7 - Humidifier Application
explained in the previous note provides further protection against overflow due to a clogged primary drain. NOTE: In applications where return air humidity levels stay at 70% or above for a prolonged period of time, condensation can Supply form on the bottom of pan and drip. WASTE LINE CONNECTION If the condensate line is to be connected to a waste (sewer) line, an open trap must be installed ahead of the waste line to prevent...