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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 specified 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, field 

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 field fabricated for locating and mounting 

the unit in the wall.

The  wall  opening  across  the  top  and  bottom  must  be 

3. 

flashed. Bottom flashing 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 fill 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 flashing to unit

b. Floor drain

c. Additional field 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 flow obstructions or recirculation of condenser 

air flow.

Some architectural designs of buildings will require the unit 

6. 

to be mounted behind a decorative grille.  The performance 

(capacity and efficiency) of the unit may be reduced with 

the use of these decorative grilles.

The less resistive these grilles are to air flow, 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.

Summary of Contents for MADISON 1000 SERIES

Page 1: ...eve and the wall Completely fill 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 flashing to unit b Floor drain c Additional fie...

Page 2: ...r drier must be installed SPORLAN 083 S or similar The unit has internally mounted service valves Field tub 1 ing may be routed through the locations provided in either the top or rear flange Care should be taken not to block ac cess to internal components Seal unused knockouts with high grade sealant Gaskets are provided for liquid and suction lines NOTE Always use refrigeration grade copper tubi...

Page 3: ...e alloy is used Step 5 This is not a back seating valve To open the valve re move the valve cap with an adjustable wrench Insert a 3 16 or 5 16 hex wrench into the stem Back out counter clockwise until the valve stem just touches the retaining ring Step 2 Wrap a wet rag around the copper stub before brazing Step 4 After brazing quench with a wet rag to cool the joint and remove any flux residue Ev...

Page 4: ...uce refrigerant into the system NOTE Oil charge is polyester 32bce Step 4 Evacuation Step 5 Refrigerant Charging When the correct refrigerant charge level is obtained re 3 move the manifold gauge set Replace the gauge port caps 4 Permanently stamp the unit data plate with the total amount of refrigerant in the system For coils equipped with TXV s charge to sub cooling 12 16 at ser vice valve super...

Page 5: ...rioration Sequence of Operations for Madison Avenue Option Step 7 Maintenance The compressor crankcase heater will be energized as long as there is power to the unit The high pressure switch HPS and low pressure switch LPS will be closed as long as refrigerant pressure in the condensing unit is normal Upon a call for cooling as indicated by 24 vac being applied to low voltage connections C and Y C...

Page 6: ...Figure 2 Wiring Schematic NCPC 6 ...

Page 7: ...7 Figure 3 Wiring Schematic Madison Series ...

Page 8: ... 208 230 60 1 12 14 8 25 Volts Hertz Phase Min AWG Wire Min Cir Ampacity Max Fuse COMPRESSOR 6 5 43 8 0 43 10 6 54 RLA Amps LRA Amps FAN MOTOR 0 25 1140 1 2 0 25 1140 1 2 0 25 1140 1 2 HP RPM Amps Full Load COIL 3 46 16 3 46 16 3 46 16 Face Area FPI Service Clearance 30 4 7 8 18 1 2 28 21 32 2 19 32 15 16 2 3 32 1 17 32 2 7 8 1 17 32 2 15 16 1 3 8 2 1000 SERIES 8 13 32 1 15 32 7 8 13 19 32 19 7 8 ...

Page 9: ...0 2 15 208 230 60 1 12 14 4 20 208 230 60 1 12 17 3 25 Volts Hertz Phase Min AWG Wire Min Cir Ampacity Max Fuse COMPRESSOR 6 5 43 8 0 43 10 6 54 RLA Amps LRA Amps FAN MOTOR 0 25 1140 1 2 0 25 1140 1 2 0 25 1140 1 2 HP RPM Amps Full Load COIL 3 77 16 3 77 16 3 77 16 Face Area FPI Service Clearance 30 3 17 32 7 8 1 17 32 1 3 8 1 17 32 18 1 2 32 20 5 16 7 8 1 3 8 23 3 4 1 1 2 7 8 1 5 16 3 5 16 5 13 1...

Page 10: ...SIONS 29 1 2 23 18 1 2 3 8 3 4 29 1 2 23 18 1 2 3 8 3 4 29 1 2 23 18 1 2 3 8 3 4 Width Height Length Liquid Valve Vapor Valve NOMINAL CAPACITY B HR 18 000 23 600 28 500 ELECTRICAL 208 230 60 1 14 10 2 15 208 230 60 1 12 14 4 20 208 230 60 1 12 14 8 25 Volts Hertz Phase Min AWG Wire Min Cir Ampacity Max Fuse COMPRESSOR 6 5 43 8 0 43 10 6 54 RLA Amps LRA Amps FAN MOTOR 0 25 1140 1 2 0 25 1140 1 2 0 ...

Page 11: ...38 14270038 14267007 14214013 14214021 14256933X 14256936Y 14256939S 14208360 14270038 14270036 14267007 14214013 14214021 14256933X 14256936Y 14256939S 14208360 14270038 14270036 14267007 14214013 14214021 14256933X 14256936Y 14256939S ITEM DESCRIPTION NCPC 418 NCPC 424 NCPC 430 16 17 18 19 19a 20 Right Side Panel Left Side Panel Wire Grille 1000 Muffler MADISON Touch Up Paint 14256938S 14256937S...

Page 12: ...0 Blower Housing Inlet Ring 2 req d Motor Blower Mount Access Panel 3000 Top Panel 3000 14208356 14270038 14270038 14267007 14214013 14214021 14256933X 14256969S 14256967S 14208357 14270038 14270036 14267007 14214013 14214021 14256933X 14256969S 14256967S 14208357 14270038 14270036 14267007 14214013 14214021 14256933X 14256969S 14256967S ITEM DESCRIPTION NCPC 418 NCPC 424 NCPC 430 16 17 18 19 19a ...

Page 13: ...eel 7 6 OD x 8 0 Blower Housing Inlet Ring 2 req d Motor Blower Mount Access Panel 4000 Top Panel 4000 14208359 14270038 14270038 14267007 14214013 14214021 14256933X 14256970S 14256968S 14208358 14270038 14270036 14267007 14214013 14214021 14256933X 14256970S 14256968S 14208358 14270038 14270036 14267007 14214013 14214021 14256933X 14256970S 14256968S ITEM DESCRIPTION NCPC 418 NCPC 424 NCPC 430 1...

Page 14: ...require that defective parts be returned to verify and identify the cause of the defect LIMITATION OF WARRANTIES ALL IMPLIED WARRANTIES INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY ARE HEREBY LIMITED IN DURATION TO THE PERIOD FOR WHICH EACH LIMITED WARRANTY IS GIVEN SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU THE EX PR...

Page 15: ... have to wait for a replacement compressor to be shipped from Bensalem PA The situation may present itself where it is better for the compressor to be returned to National Comfort Products during the 20 month Bristol warranty period NCP will also honor the Bristol 20 month warranty period All returned compressors must have the tubing connections closed with rubber plugs or brazed shut National Com...

Page 16: ...seamless rifled copper tubes CABINET Unit cabinet shall be constructed of heavy gauge galvanized or aluminized steel The steel shall be treated by phosphate washes prior to electrostatically applied and oven baked paint FACTORY CHARGED Each unit shall be charged with R410a for proper operation with recommended indoor coil and 10 foot tubing SERVICE VALVES Each unit shall be equipped with liquid an...

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Page 20: ...R 410a Split System Condensing Unit Installation Instructions Rev 09 10 PLEASE NOTE ALL 2 5 TON UNITS 430 MODELS HAVE BEEN DISCONTINUED ...

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