National Comfort Products NCPC-418-1010 User Manual

National Comfort Products
539 Dunksferry Road • Bensalem, PA 19020
(215) 244-1400 • 1-800-523-7138 • Fax: (215) 244-9579
SPLIT-SYSTEM CONDENSING UNIT INSTALLATION INSTRUCTIONS
1000 3000 4000 SERIES
Before Installing Unit
Check all local codes and ordinances that could affect in-1.
stallation. The manufacturer assumes no responsibility for
equipment installed in violation of any code requirements.
Be sure that the electrical data specied on the unit rating 2.
plate corresponds to what is available at the installation site
and NEC for installation requirements.
Be sure that the electrical service provided to the building 3.
can handle the load imposed by the unit.
This unit should be installed in an outside wall for thru-the-4.
wall installation ONLY.
NCP condensing units may only be used with indoor evapo-5.
rator coils utilizing an expansion (TXV) valve. Self-equaliz-
ing components are required to reduce compressor starting
problems. If self-equalizing components are not used, eld
installed hard start kits will be required.
Hard start kits must be compatible with Bristol compres-
sors.
Start Cap for Various Sizes µFd/Volts
18,000 BTU 145-175/330
24,000 BTU 145-175/330
30,000 BTU 145-175/330
Start relays to be sized to µFd of capacitor used.
The unit must be installed with the top level front to rear 6. and
left to right.
In thru-the-wall installation, due to the various types of wall con-
struction, it is not possible to provide detailed instructions. The
following is a list of general requirements and cautions for in-
stalling these units.
Masonry walls must have a lintel to support the wall.1.
Extend the unit approximately 3/4” beyond outside surface 2.
of the wall. Optional mounting angles can be purchased
from the factory or eld fabricated for locating and mounting
the unit in the wall.
The wall opening across the top and bottom must be 3.
ashed. Bottom ashing to cover the full foot print of unit
and extend up 2’’ on 3 sides. All openings around the top,
sides and bottom must be caulked and sealed. Care must
be taken not to plug the openings in the front of the base
pan of the unit.
Step 1 - Thru-the-Wall Installation
If the optional wall sleeve is used, caulk the spaces between the
sleeve and the wall. Completely ll the clearance between the
unit and the wall sleeve with a polyurethane foam sealant (Fol-
low manufacturer’s suggested application manual).
During periods of rain and wind the primary drainage path 4.
may not be adequate to handle the load. Secondary pre-
cautions may also be required but not limited to the follow-
ing:
a. Seal ashing to unit
b. Floor drain
c. Additional eld sealing of sheet metal joints
d. Sealing of unused access opening
Clearances to air inlets and outlets must be adequate to en-5.
sure no air ow obstructions or recirculation of condenser
air ow.
Some architectural designs of buildings will require the unit 6.
to be mounted behind a decorative grille. The performance
(capacity and efciency) of the unit may be reduced with
the use of these decorative grilles.
The less resistive these grilles are to air ow, the better the units
performance will be.
Outdoor louvers provided by others must be approved by NCP
to maintain unit performance and warranty. Care must be taken
to locate coil intake side of unit away from loose debris that may
clog intake.
If the unit is mounted behind a decorative grille, one or both 7.
of the following items must be done to eliminate recircula-
tion of air to the unit:
a. The front of the unit must be mounted tight to the inside
of the architectural grille
b. A barrier must be provided to prevent recirculation of air
to the unit (mixing of inlet and outlet air) when the front
of the unit is mounted back from the inside of the arch-
tectural grille
The unit 8. must not be mounted in dead-end hallways or ar-
eas where there is no fresh outside air circulation. Cool
fresh outside air must be provided for best unit operation.
Thru-the-wall units may not be located where hot exhausts
from clothes dryer vents, kitchen vents, steam vents or cor-
rosive fumes could come in contact with coil side of unit.
30” clearance is required for service accessibility on the in-9.
side. If more than one unit is to be installed in the same
area a min. of 48’’ vertical must be maintained between
units to minimize recirculation of condenser exhaust air.
THE UNIT MUST NEVER BE PLACED ON ITS SIDE OR UPSIDE DOWN AS THE COMPRESSOR OIL WILL RUN IN THE COOLING
CIRCUIT AND SERIOUSLY DAMAGE THE UNIT. BASE PAN MUST ALWAYS BE ON THE BOTTOM OF THE INSTALL.
1
14299706 09/10
R410a
PLEASE NOTE: ALL 2.5 TON UNITS (430 MODELS)
HAVE BEEN DISCONTINUED.

National Comfort Products NCPC-418-1010 Specifications

General

Brand	National Comfort Products
Model	NCPC-418-1010
Category	Air Conditioner
Language	English

Summary

Before Installing Unit

Pre-installation Checks and Requirements

Verify local codes, electrical data, service load, and unit leveling before installation.

Thru-the-Wall Installation Specifics

Unit must be in an outside wall; TXV coils and hard start kits may be needed.

Step 1 - Thru-the-Wall Installation

Masonry Wall Lintel and Unit Mounting

Masonry walls need lintels; unit extends 3/4" out; use mounting angles.

Wall Opening Flashing, Sealing, and Drainage

Flash/seal openings, ensure drainage, and prevent base pan blockage.

Airflow and Installation Clearances

Maintain air inlet/outlet clearance, consider decorative grilles, and prevent recirculation.

Installation Environment and Location

Ensure fresh air, avoid exhaust fumes, and maintain service access clearance.

Step 2 - Installing Refrigerant Lines

Refrigerant Line Routing and Insulation

Route lines directly, insulate vapor lines, and use heat sinks during brazing.

Leak Checking Procedures

Check for leaks using dry nitrogen and soap solution or R410a refrigerant.

Figure 1 - Installing Refrigerant Lines

Field Installation Preparation

Install units per manufacturer, route lines, and prepare tubing.

Refrigerant Line Brazing Steps

Detailed steps for cutting, fluxing, brazing, and cooling refrigerant line joints.

Service Valve Operation

Procedure for opening and securing the service valve.

Step 4 - Evacuation

Vacuum Pump Connection and System Evacuation

Connect pump, evacuate system to 300 microns, and check for leaks.

Post-Evacuation Procedures

Continue running pump, check holding vacuum, isolate pump, open valves.

Step 5 - Refrigerant Charging

Charge Adjustment and System Preparation

Adjust charge for line length; ensure access panel is in place during operation.

Refrigerant Charging Process

Connect cylinder, introduce refrigerant, and remove gauge set.

Superheat and Subcooling Targets

Charge to sub-cooling 12-16° and superheat 8-12° at service valve.

Step 6 - Electrical Connections

Electrical Connection Requirements

Match unit specs, use separate circuit, and install disconnect means.

Line and Low Voltage Wiring

Connect power to L1/L2 and low voltage to thermostat cable.

Thermostat Placement Guidelines

Locate thermostat in natural air path, avoiding drafts and obstructions.

Sequence of Operations for Madison Avenue Option

Compressor Crankcase Heater and Safety Switches

Heater energized; safety switches closed during normal operation.

Cooling Cycle Sequence

Thermostat call activates fan speed control and compressor contactor.

System Shutdown Logic

System stops upon thermostat satisfaction or opening of safety switches.

Figure 2 - Wiring Schematic NCPC

NCPC Wiring Schematic Diagram

Diagram illustrating wiring of the condensing unit components.

Voltage and Capacitor Charts

Charts providing voltage ranges and capacitor values for NCPC models.

Figure 3 - Wiring Schematic Madison Series

Madison Series Wiring Schematic

Detailed wiring diagram for Madison Series units with component labels.

Madison Series Capacitor Specifications

Chart listing capacitor values for various Madison Series models.

SPECIFICATIONS CHART - 1000 SERIES

1000 Series Dimensions and Valve Sizes

Physical dimensions and refrigerant valve sizes for 1000 Series units.

1000 Series Electrical and Compressor Specs

Electrical data, RLA/LRA, fan motor specs for 1000 Series.

1000 Series Coil and Dimensional Drawings

Coil face area/FPI and dimensional drawings for 1000 Series.

SPECIFICATIONS CHART - 3000 SERIES

3000 Series Dimensions and Valve Sizes

Physical dimensions and refrigerant valve sizes for 3000 Series units.

3000 Series Electrical and Compressor Specs

Electrical data, RLA/LRA, fan motor specs for 3000 Series.

3000 Series Coil and Dimensional Drawings

Coil face area/FPI and dimensional drawings for 3000 Series.

SPECIFICATIONS CHART - 4000 SERIES

4000 Series Dimensions and Valve Sizes

Physical dimensions and refrigerant valve sizes for 4000 Series units.

4000 Series Electrical and Compressor Specs

Electrical data, RLA/LRA, fan motor specs for 4000 Series.

4000 Series Coil and Dimensional Drawings

Coil face area/FPI and dimensional drawings for 4000 Series.

NCPC SERIES 1000 REPLACEMENT PARTS GUIDE

NCPC 1000 Series Parts

Itemized list of replacement parts for NCPC Series 1000 units.

Madison 1000 Series Parts

Itemized list of replacement parts for Madison Series 1000 units.

NCPC SERIES 3000 REPLACEMENT PARTS GUIDE

NCPC 3000 Series Parts

Itemized list of replacement parts for NCPC Series 3000 units.

Madison 3000 Series Parts

Itemized list of replacement parts for Madison Series 3000 units.

NCPC SERIES 4000 REPLACEMENT PARTS GUIDE

NCPC 4000 Series Parts

Itemized list of replacement parts for NCPC Series 4000 units.

Madison 4000 Series Parts

Itemized list of replacement parts for Madison Series 4000 units.

LIMITED EXTENDED PROTECTION WARRANTY

Product Warranty Terms and Coverage

One-year product warranty; extended five-year compressor warranty.

Warranty Limitations and Exclusions

Excludes labor, transportation, and damage from improper installation.

Freight Damage and Facade Warnings

Freight damage not covered; warning against brick facades impeding airflow.

PROCEDURE FOR WARRANTY FAILURE

Compressor Warranty Return Procedure

Steps for returning failed compressors to a Bristol wholesaler or NCP.

Other Parts Warranty Claim Process

Process for other parts, requiring PO, RGA number, and factory notification.

ENGINEERING SPECIFICATION GUIDE

Unit Specifications Overview

General, safety, application, coil, cabinet, and charging specs for the unit.

Component Construction Details

Specifications for service valves, compressor, and blower motor.