York N1VSD10A06, N1VSD14A06, N2VSD20A06 Installation Instruction

®

TYPE OF APPLICATIONS

UPFLOW DOWNFL OW

HORIZONTAL

ELECTRIC FURNACE

WITH 018 - 024 COIL

WITH 030 - 061 COIL

*

*Right hand ret urn may be used by remov ing Horizo ntal Drain Pa n

WITH 024 COIL

VARIABLE SPEED AIR HANDLERS

FOR USE WITH SPLIT SYSTEM COOLING AND HEAT PUMP

CAUTION

THE ENCL OSED I NST AL LAT I ON INSTRUCTI ONS AND ANY APPL I CABL E

LOCAL , STATE, AND NATIONAL CODES INCLUDING, BUT NOT LIMITE D

TO, BUIL DING, ELECTRICAL, AND MECHANICAL CODES.

T HIS PRODUCT MUST BE INSTALLED IN STRICT COMPL IANCE WITH

WARNING

OPERATION OF THE PRODUCT COULD CAUSE PERSONAL INJURY
OR PROPERTY DAM AGE.

INCORRECT INSTALLA TION MAY CREATE A CONDITION WHERE THE

INSTALLATION INSTRUCTION

GENERAL

This instruction covers the installation of the following variable
speed blower sections.

N1VSD10A06
N1VSD14A06
N2VSD20A06

The blower section is the basic component of an indoor modular
system which may be combined with various accessories listed
below to make an evaporator blower, evaporator blower with
electric heat, heat pump blower, and heat pump blower with
electric heat.

Because of the many ways this Air Handler may be applied and
the large variety of available accessories, the indoor portion of the
cooling or heat pump system comes to you in modules. These
modules must be field assembled to meet the specific needs of
the owner.

If this variable speed air handler is installed with a two stage
(H*DS) outdoor condensing unit, a thermal expansion valve kit
must be installed on the indoor side.

Check modules (accessories, etc.) received, against plans to be
sure all required modules are available for assembly .

Supersedes: 535.03-N1Y (1293)

N*VS BLOWER SECTIONS

CAUTIONS
WARNINGS

and/or equipment damage may result if installation procedures
are not handled properly .

535.03-N1Y (594)

035-10809

are given to prevent equipment damage.

are given to alert the installer that personal injury

INSPECTION

As soon as a unit is received, it should be inspected for possible
damage during transit. If damage is evident, the extent of the
damage should be noted on the carrier’s freight bill. A separate
request for inspection by the carrier’s agent should be made in
writing. See Form 50.15-NM for more information.

REFERENCE

This instruction should be used in conjunction with installation
instructions supplied with each accessory as well as the matching
outdoor section.

Installer should pay particular attention to the words: NOTE,
CAUTION and WA RNING.

NOTES

are intended to clarify or make the installation easier.

FIGURE 1 - Typical Component Application

535.03-N1Y

LIMIT ATIONS

These units must be wired and installed in accordance with all
national and local safety codes.

Voltage limits are as follows:

Air Handler

Voltage

208/230 (06) 187-253

*Utilization range “A” in accordance with ARI Std. 110.

Air flow must be within the minimum and maximum limits ap­proved for electric heat, evaporator coils and outdoor units.

Entering Air Temperature Limits

Wet Bulb Temp. °F Dry Bulb Temp. °F

MIN. MAX. MIN. MAX.

57 72 65 95

*Normal Operating

Voltage Range

3. Precautions should be taken to locate the unit and ductwork
so that supply air does not short circuit to the return air.

4. If evaporator coil is used, locate to permit installation of a
trapped condensate line to an open drain.

5. When an evaporator coil is installed in an attic or above a
finished ceiling, an auxiliary drain pan should be provided
under the coil as is specified by most local building codes.

If the coil is provided with a secondary drain it should be
trapped and piped to a location that will give the occupant a
visual warning that the primary drain is clogged. If the secon­dary drain is not used it must be capped.

6. If unit is located in an area of high humidity, ie. an uncondi­tioned garage or attic, nuisance sweating of casing may
occur. On these installations a wrap of 2" fiberglass insulation
with vinyl vapor barrier should be used.

7. Proper electrical supply must be available.

CLEARANCE

Clearance must be provided for:

1. Refrigerant piping and connections - minimum 12"
recommended.

2. Maintenance and servicing access - minimum 36" from front
of unit recommended for blower motor / coil replacement.

3. Condensate drain line.

4. Filter removal - minimum 36" recommended.

LOCA TION

Location is usually predetermined. Check with owner’s or dealer’s
installation plans. If location has not been decided, consider the
following in choosing a suitable location:

MINIMUM CLEARANCE
OF 1" ALL SIDES

8. Clearances must also be taken into consideration, and pro­vided for as follows:

a. Maintenance and servicing thru the front or access side of

unit with both sides and rear of unit having zero inch
clearance.

b. When no electric heat is used, the unit as well as all duct

work and plenum are designed for zero clearance to
combustible material.

c. If electric heat is used or anticipated, be sure a minimum

clearance of one inch is allowed on all sides of the supply

FLEXIBLE
DUCT

3’

COLLAR

FIGURE 2 - Duct Clearance

1. Select a location with adequate structural support, space for
service access, clearance for air return and supply duct
connections.

2. Normal operating sound levels may be objectionable if the air
handler is placed directly over some rooms such as bed­rooms, study, etc. A flexible duct collar is recommended as
shown in Figure 2 to minimize noise.

2 Unitary Products Group

FIGURE 3 - Typical Wiring and Piping

air duct and plenum. This clearance must be maintained
up to 3 feet a long the supply air duct. See Figure 2.

535.03-N1Y

liquid line connection and distributor . The orifice is identified on a
label next to the liquid connection.

When a discharge plenum forms part of the duct work, it too must
have one inch clearance on all sides.

DUCT CONNECTIONS

NOTE: The electric heat accessory should be installed before the

supply air duct is attached to the supply air openings.

Air supply and return may be handled in one of several ways best
suited to the installation. See Figure 4 for Air Handler inlet and
outlet dimensions. Inlet dimensions of Air Handler are the same
as coil casing outlet dimensions.

The vast majority of problems encountered with combination
heating and cooling systems can be linked to improperly designed
or installed duct systems. It is therefore highly important to the
success of an installation that the duct system be properly de­signed and installed.

Use flexible duct collars to minimize the transmission of vibra­tion/noise into the conditioned space. If electric heat is used
non-flammable material must be used.

Where return air duct is short, or where sound is liable to be a
problem, sound absorbing glass fiber should be used inside the
duct. Insulation of duct work is a must where it runs through an
unheated space during the heating season or through an un­cooled space during the cooling season. The use of a vapor
barrier is recommended to prevent absorption of moisture from
the surrounding air into the insulation.

The supply air opening on the fan unit should be enlarged to the
proper duct size by use of a transition. All ducts should be
suspended using flexible hangers and never fastened directly to
the structure.

Duct work should be fabricated and installed in accordance with local
and/or national codes. This includes the standards of the National
Fire Protection Association for Installation of Air Conditioning and
Ventilating Systems, NFPA No. 90A and Warm Air Heating and Air
Conditioning Systems, NFP A No. 90B.

INDOOR UNIT PREPARATION

Prepare Air Handler for installation as follows:
Each accessory is provided with its own instruction.

1. Attach coil casing to blower section in a way appropriate to
indoor unit application.

See Form 535.01-N5V for G*HC or G*FC Coils and
Form 535.01-N6V for G*HT Coils

Confirm the orifice size before connecting line. The G*HC and
G*FC coils will have an orifice installed in the fitting between the

The orifice that is shipped with the coil is based on the “most sold”
combination, but it may have to be changed, depending on the
capacity and efficiency of the outdoor unit, elevation differences,
and/or long total line lengths. See coil instruction and Application
Data (Form 690.01-AD1V) for detailed piping guidelines.

If a thermal expansion valve kit is installed, the orifice must be
removed.

The G*HT coils have a thermal expansion valve installed in the
liquid line. An orifice is not included in this coil. Be sure the G*HT
coil has been listed as a matched coil in the outdoor unit technical
guide.

NOTE: If a humidistat accessory is installed with the system, a

thermal expansion valve kit or G*HT coil must be installed
on the indoor side.

If a two stage (H*DS) outdoor condensing unit is installed with this
variable speed air handler a thermal expansion valve kit must be
installed.

2. Install Combustible Floor Base accessory if applicable. The
floor base is required on blower-heater combinations with
greater than zero clearance in a downflow position on a
combustible floor.

See Form 535.01- N1.5V

NOTE: Instructions for installing accessories are included with the

accessories.

3. Attach Filter Rack Accessory if applicable. The filter rack is
designed for use with G*HC, G*FC or G*HT coil or blower
section.

See Form 535.01- N1.4V

CAUTION: Equipment should never be operated without filters.

4. Attach Suspension Kit if applicable. The suspension kit is
designed to be used with all sizes of air handlers whenever
the application requires horizontal or vertical suspension of
the unit.

See Form 535.01 - N1.3V

5. Install Air Handler operating controls. A transformer accessory
or an electric heater accessory must be supplied for the
operation of the Air Handler .

See Form 535.03 - N1.1V
See Form 535.01 - N4.1V

Unitary Products Group 3

024

535.03-N1Y

NOTES: Power wiring may be brought into the unit through one of the knockouts in either the top or the right side panel.
Multiple knockouts are provided to accommodate all of the electric heat and transformer accessories that are available.
Use the knockouts that provide the best wire routing for the accessory being used.

024

024

Coil

Model

Blower

*

**G*HT coil models o nly.

GHC,

Size

GFC,

GHT

024

D10

030 14-1/4 22-3/4 54-1/2 3-1/4 6-3/8 14-7/8 16-7/8
036

D14

042 20-1/4 27-7/8 59-5/8 6 8-1/8 20 22
048
060

D20

60D**

061**

G*HT coils are available as sweat connect only.

A B C D E F G H J K L M Liquid Vapor Liquid Vapor

16-1/4 1 12-1/8 3-7/8 12-1/8

22-1/4 3-5/8 14-7/8 3-7/8 12-1/8

26-1/4 5-5/8 14-7/8 3-7/8 12-1/8 24-1/4

Dimensions

14-1/4 22-3/4 54-1/2 3-1/2 1-1/2 1-3/4 3-1/2

20-1/4 22-3/4 54-1/2 6 7-3/8 14-7/8 16-7/8

27-7/8 59-5/8 8 6-3/4 20 22
31-3/8 63-1/8 7-1/4 7-5/8 23-1/2 25-1/2

Refrigerant*

Connections

Quick

Connect

F-6 F-11

Line

Sizes

5/16 5/8
5/16 3/4

3/8 7/8

FIGURE 4 - DIMENSIONS

4 Unitary Products Group

ELECTRICAL CON NECT IONS

12.5, 15 & 20 KW CONTROL BOARDS

FIGURE 5 - Line Power Connections

Wire Transformer Kit or Electric Heater per wiring diagram on th e
accessory . T ypical field wiring is shown in Figures 9, 10 and 11.

CAUTION: Break off tab must be removed from 2HW electric

heat control boards for variable speed operation. See
Figure 6.

NOTE: All wiring must comply with local and national electrical

code requirements. Read and heed all unit caution labels.

LINE POWER CONNECTIONS

Power may be brought into the unit through the supply air end of
the unit (top when unit is vertical) or the right side panel. Use the
hole appropriate to the unit’s orientation in each installation to
bring conduit from the disconnect. The power lead conduit should

GRD.
LUG

WITHOUT CIRCUIT BREAKER

GRD.

POWER
SUPPLY

CIRCUIT BREAKERS

POWER WIRING

GRD.
LUG

WITH CIRCUIT BREAKER

535.03-N1Y

be terminated at the transformer or electric heater box. Refer to
Tables 2 and 5 for single source wire sizes. Also see Figure 5.

ALTERNATE LINE POWER CONNECTI ONS

When desired or required by local conditions the units equipped
with circuit breakers may be field converted to use multiple power
sources, this will permit the use of smal ler size power wire but will
require a greater number of wires. To accomplish this field con­version refer to Figure 5 - (Dual Supply) as an example and
proceed as follows.

1. Remove the jumper bar assembly and cover at the line side
connection to the circuit breakers.

2. Select the proper wire size from Table 3.

3. Connect the multiple power sources direct to the circuit breakers.

DUAL SUPPLYSINGLE SUPPLY

GRD.

POWER
SUPPLY

GRD.
LUG

GRD.

NOTE: Two circuits permit smaller wire.

CIRCUIT BREAKERS

POWER

SUPPLY 1

WITH CIRCUIT BREAKER

POWER

SUPPLY 2

FIELD
REMOVED
BUSSBAR

5, 7.5 & 10 KW CONTROL BO ARDS

NOTE: LINE VOLTAGE POWER CONNECTS
DIRECTLY T O 10 KW BOARDS

EDGE CONNECTOR
(For Wiring Harness that
attaches to Connection Board)

BREAK OFF TABS
(For V ariable Speed Air
Handler ONL Y - must be
removed)

FIGURE 6 - Typical Electric Heat Control Boards

EDGE CONNECTOR
(For Wiring Harness that
attaches to Connection Board)

- (5-20KW Single Phase)

BREAK OFF TABS
(For V ariable Speed Air
Handler ONL Y - must be
removed)

Unitary Products Group 5

JUMPER IN “A” CFM
POSITION

535.03-N1Y

FAN MOTOR SPEED TAP RECEPTACLE
ON TRANSFORMER OR HEATER ACCESSORY

208/230V

Field supplied low voltage wiring must be kept as short as possi­ble and away from the blower motor wires. Refer to Table 2, 3 or
5 for minimum wire size.

PURPLE

BLUE

GRD.

5 PIN CONNECTOR

PURPLE

BLUE

VARIABLE
SPEED MOTOR

WIRE HARNESS
TO CONNECTOR
BOARD (16 PIN
CONNECTOR)

FIGURE 7 - Blower Connections

LOW VOLTAGE CO NT ROL CO NNECT ION S

Use 7/8 inch knockout on the left hand side panel to bring low
voltage wiring into air handler.

CAUTION: Use 7/8 inch plastic bushing provided to prevent

All field control wiring to be connected at screw terminals of
connector board. See Figure 8.

Remove control wiring harness supplied with 2HW electric heat
accessory and discard. Every connector board is supplied with a
complete electric heat wiring harness connected to the lower right
hand corner of connector board (See Figure 8). Plug in free end
of wiring harness to electric heat control board. If the transformer
kit is installed, discard electric heat wiring harness attached to
connector board. Install wiring harness provided with transformer
accessory at the connection in lower right hand corner of connec­tor board.

chafing wires.

The 24 volt power supply is provided by an internally wired low
voltage transformer. However , if the unit is connected to a 208 volt
power supply the low voltage transformer must be rewired to the
208 volt tap. See the unit wiring label.

See Figure 9, 10 and 1 1 for low voltage terminal connections.
If thermostat used has an adjustable heat anticipator, see Table

below for proper setting.

HEAT ANTICIPATOR SETTING

Electric Heater with

Cooling or

Electric Heater Only

2HW 5 - 20 0.1 Amps

KW

Adjustable

Heat

Anticipator

BLOWER SPEED SEL ECTI ON

All variable speed air handlers (N*VS) are designed to deliver
constant CFM regardless of the external static pressure (ESP) in
the ductwork. Therefore, if too many supply registers are closed,
a filter becomes clogged, or there is a restriction in the ductwork,
the motor will automatically operate at a higher speed to compen­sate for the higher ESP. This may result in a higher operating
sound level.

To Set Cooling CFM:
Refer to the outdoor unit technical guide for the recommended

airflow with the matching evaporator coil. Refer to the label on the
blower housing or T able 1 for the possible HI speed cooling and/or

SCREW
TERMINAL
BOARD

HUMIDISTAT
ACCESSORY
JUMPER

FIGURE 8 - N*VS Connector Board

HEA T PUMP JU MPER

BLOWER MOTOR
INTERFACE HARNESS
CONNECTS HERE

JUMPER IN STORED POSITION

(Vertically on RH side, pins “A” and “B”)

COOL TAP

(Horizontally jumper two “A” pins)

ELECTRIC

HEA T TAP

ADJ TAP

DELA Y

PROFILE TAP

ELECTRIC HEA T OR TRANSFORMER WIRING
HARNESS CONNEC TS HE RE

6 Unitary Products Group

heat pump CFM selections. Find the recommended system air­flow in the table for the installed Air Handler model.

Moving up the table, identify the “COOL” tap jumper position (“A”,
“B”, “C” or No Jumper). Go to the connector board and set the
jumper horizontally for the “COOL” tap position. See Figure 8 for
the layout of the connector board.

NOTE: No jumper indicates the jumper should be removed or

placed in the “store” position (see Figure 8).

Return to Table 1 and move to the right to identify the “ADJ” tap
jumper position. Go to the connector board and set the jumper
horizontally for the “ADJ” tap position (refer to Figure 8). Again,
“No jumper” indicates the jumper should be removed or placed in
the “store” position.

To Set Heat Pump CFM:
The heat pump CFM setting is the same as the cooling CFM. No

additional CFM setting is required, however, you mu st remove the
jumper at the bottom of the connector board labeled “Remove for
Heat Pump” for heat pump operation. (See Figure 8.)

To Set Electric Heat CFM:
The blower speed required for the Electric Heat is different than

cooling. Refer to the label on the blower housing or Table 1 for the
possible CFM selections. Refer to Table 4 for the minimum
required CFM for the electric heater installed. Find the desired
airflow in Table 1. Moving up the table, identify the “HEAT” tap
jumper position. Go to the connector board and set the jumper
horizontally for the “HEA T” ta p position.

CAUTION: DO NOT change the “ADJ” tap position on the con-

nector board as this will change your cooling CFM
previously selected.

To Set Delay Profile:
Every variable speed air handler has multiple “blower off delay”

profiles to optimize system performance and efficiency .

535.03-N1Y

Refer to Table below for the type of system installed. set the
“DELA Y” jumper tap position horizontally on the connector board
for the appropriate setting.

Delay Profile

“DELA Y” T ap Unit Type
Jumper at “A” System wo/TXV or wo/ S.V.
Jumper at “B” System w/TXV or w/ S. V.
Jumper at “C” Two Stage Condensor

No Jumper Test Mode

TXV= Thermal Expansion Valve
SV= Solenoid Valve

To Install Humidistat Accessory:
If the system is used with a humidistat accessory, connect the field

wires to screw terminals “R” and “BK” on the connector board.
See Figures 10 or 11.

IMPORTANT : Remove the jumper at the bottom of the connector
board marked “Remove for Humidistat” for humidistat operation.

MAINTENANCE

One permanent high velocity washable filter is provided with each
filter rack. This filter may be cleaned with a vacuum cleaner or
washed with warm water using a mild detergent. Do not use a
high velocity water stream. No coating is required. Install filter with
cloth mesh towards blower . Never turn a dirty filter to allow air flow
in the opposite direction.

Filters must be cleaned when they become dirty. Inspect at least
once per month. The frequency of cleaning depends upon the
hours of operation and the local atmospheric conditions. Clean
filters keep unit efficiency high.

COIL CLEA NING

If the coil needs to be cleaned, it should be washed with Calgon
Coilclean (mix one part Coilclean to seven parts water). Allow
solution to remain on coil for 30 minutes before rinsing with clean
water. Solution should not be permitted to come in contact with
painted surfaces.

Unitary Products Group 7

535.03-N1Y

TABLE 1 - CFM / TAP SELECT IO N

MODEL HI SPEED COOLING AND HEAT PUMP CFM SELECTION

“COOL” Tap

Cubic Foot Per Minut e (CF M)
610 650 850 900 Jumper at “B”
680 720 950 1000 No Jumper

N1VSD10

N1VSD14

N2VSD20

750 800 1050 1100 Jumper at “C”

ELECTRIC HEAT CFM SELECTION

“HEAT” Tap

Jumper at “A” Jumper at “B” Jumper at “C” No Jumper

Cubic Foot Per Minut e (CF M)
900 1000 1050 1100

HI SPEED COOLING AND HEAT PUMP CFM SELECTION

“COOL” Tap

Cubic Foot Per Minut e (CF M)
900 1050 1210 1260 Jumper at “B”

1000 1175 1350 1400 No Jumper
1100 1300 1485 1540 Jumper at “C”

ELECTRIC HEAT CFM SELECTION

“HEAT” Tap

Jumper at “A” Jumper at “B” Jumper at “C” No Jumper

Cubic Foot Per Minut e (CF M)

1100 1200 1300 1400

HI SPEED COOLING AND HEAT PUMP CFM SELECTION

“COOL” Tap

Cubic Foot Per Minut e (CF M)

1050 1500 1550 1625 Jumper at “B”
1150 1660 1750 1800 No Jumper
1350 1900 2000 2090 Jumper at “C”

“ADJ” TapJumper at “A” Jumper at “B” Jumper at “C” No Jumper

“ADJ” TapJumper at “A” Jumper at “B” Jumper at “C” No Jumper

“ADJ” TapJumper at “A” Jumper at “B” Jumper at “C” No Jumper

ELECTRIC HEAT CFM SELECTION

“HEAT” Tap

Jumper at “A” Jumper at “B” Jumper at “C” No Jumper

Cubic Foot Per Minut e (CF M)

1300 1300 1450 1600

T A BLE 2 - ELECTRICAL DATA / TRANSFORMER KIT

BLOWER

SIZE
N1VSD10
N1VSD14 5.4 5.4 15 14
N2VSD20 8.8 8.8 15 14

TRANFORMER

KIT

2TT6700506

208/230V

TABLE 3 - ELECTRICAL DATA / HEATER ACCESSORY

Blower

Size

N1VSD10

N1VSD14

N2VSD20

* NOTE: 60°C and 90° C wire may be used. Reference the latest edition of National Electrical Code for proper wire size.

Heater
Accessory
Model No.

2HW06501306 48/56 11/ 13 50/60 15/15 8/6 14/14
2HW06501506 48/56 23/26 50/60 25/30 8/6 10/10
2HW06502006 48/56 45/52 50/60 50/60 8/6 8/6
2HW06501306 51/58 11/ 13 60/60 15/15 6/6 14/14
2HW06501506 51/58 23/26 60/60 25/30 6/6 10/10
2HW06502006 51/58 45/52 60/60 50/60 6/6 8/6
2HW06501306 54/61 11/ 13 60/60 15/15 6/6 14/14
2HW06501506 54/61 23/26 60/60 25/30 6/6 10/10
2HW06502006 54/61 45/52 60/60 50/60 6/6 8/6

Min. Circuit Ampac ity Max. Time Delay Fuse

Circuit Circuit Circuit

1st 2nd 1st 2nd 1st 2nd

208/240 208/240 208/240 208/240 208/240 208/240

MIN. CIRCUIT AMPACITY

208 230

2.8 2.8 15 14

MAX. T.D. FUSE SIZE MIN. WIRE SIZE AWG.

/ MULTI-POWER SOURCE

75°C Wire Size - AWG*

8 Unitary Products Group

TABLE 4 - ELECTRICAL DA TA / HEA TER ACCESSORY

Blower

Size

N1VSD10

N1VSD14

N2VSD20

Heater
Accessory
Model No.

2HW06500506 900 3.8/5.0 13.0/17.1 3.8/5.0 ­2HW06500806 950 5.0/7.5 19.1/25.6 3.8/5.0 1.8/2.5
2HW06501006 1000 7.5/10.0 25.6/34.2 3.8/5.0 3.8/5.0
2HW26501006 1000 7.5/10.0 25.6/34.2 3.8/5.0 3.8/5.0
2HW06501306 1050 9.4/12.5 32.1/42.7 3.8/5.0 5.6/7.5
2HW06501506 1100 11.3/15.0 38.6/51.2 3.8/5.0 7.5/10.0
2HW06502006 1100 15.0/20.0 51.2/68.3 3.8/5.0 11.3/15.0
2HW06500506 1100 3.8/5.0 13.0/17.1 3.8/5.0 ­2HW06500806 1100 5.0/7.5 19.1/25.6 3.8/5.0 1.8/2.5
2HW06501006 1200 7.5/10.0 25.6/34.2 3.8/5.0 3.8/5.0
2HW26501006 1200 7.5/10.0 25.6/34.2 3.8/5.0 3.8/5.0
2HW06501306 1300 9.4/12.5 32.1/42.7 3.8/5.0 5.6/7.5
2HW06501506 1300 11.3/15. 0 38.6/51.2 3.8/5.0 7.5/10.0
2HW06502006 1400 15.0/20.0 51.2/68.3 3.8/5.0 11.3/15.0
2HW06500506 1200 3.8/5.0 13.0/17.1 3.8/5.0 ­2HW06500806 1200 5.0/7.5 19.1/25.6 3.8/5.0 1.8/2.5
2HW06501006 1300 7.5/10.0 25.6/34.2 3.8/5.0 3.8/5.0
2HW26501006 1300 7.5/10.0 25.6/34.2 3.8/5.0 3.8/5.0
2HW06501306 1450 9.4/12.5 32.1/42.7 3.8/5.0 5.6/7.5
2HW06501506 1450 11.3/15. 0 38.6/51.2 3.8/5.0 7.5/10.0
2HW06502006 1600 15.0/20.0 51.2/68.3 3.8/5.0 11.3/15.0

Min. CFM

Cooling or

Heat Pump

208/230-1-60 HEA TERS

535.03-N1Y

Total Heat

1

KW Staging

KW MBH 1st 2nd

208/240 208/240 208/240 208/240

TABLE 5 - ELECT RICAL DATA / HEATER ACCESSORY

Blower

Size

Heater
Accessory
Model No.

Min. Ckt.
Ampacity

2HW06500506 26/30 30/35 10/8 NONE
2HW06500806 37/43 40/45 8/8 NONE
2HW06501006 48/56 50/60 8/6 NONE

N1VSD10

2HW26501006 48/56 50/60 8/6 BREAKER
2HW06501306 60/68 60/70 6/4 BREAKER
2HW06501506 71/82 80/90 4/4 BREAKER
2HW06502006 94/108 100/125 3/2 BREAKER
2HW06500506 28/31 30/35 10/8 NONE
2HW06500806 39/44 40/45 8/8 NONE
2HW06501006 51/58 60/60 6/6 NONE

N1VSD14

2HW26501006 51/58 60/60 6/6 BREAKER
2HW06501306 62/71 70/80 6/4 BREAKER
2HW06501506 73/83 80/90 4/4 BREAKER
2HW06502006 96/110 100/110 3/2 BREAKER
2HW06500506 31/35 35/35 8/8 NONE
2HW06500806 43/48 45/50 8/8 NONE
2HW06501006 54/61 60/60 6/6 NONE

N2VSD20

2HW26501006 54/61 60/60 6/6 BREAKER
2HW06501306 65/74 70/80 6/4 BREAKER
2HW06501506 76/87 80/90 4/4 BREAKER
2HW06502006 99/113 100/125 3/2 BREAKER

NOTE: Air handler and heater accessory may be com bined without a coil fo r electric furnace applica t io ns. Model Number suf fix i nd ica tes voltage. 06=208/230 -1-6 0.
* NOTE: 60°C and 90°C wire may be used. Referrence the latest e dition of Natio na l Ele ctrical Co de for proper wire size.

Field Wiring - 208/240
Max. Overcurrent

Prot. Amps/Type

208/230-1-60 HEAT ER S

Wire Size, AWG*

75°C Copper

Factory-Installed

Over-Current

Protection

1

KW & MBH CONVERSIONS:

208-VOLT

FOR

230-VOLT 240-VOLT .918

Unitary Products Group 9

OPERATION, MULTIPLY

240-VOLT

TABULATED KW & MBH BY

.751

THERMO STAT

Y

G
W

OUTDOOR UNIT

O

R

B
Y

O

X
R

W

66

C
Y

R

G

CONNECTOR
BOARD

X or L

B or C

60

53

O
X

("HUMIDISTAT" JUMPER MUST BE REMOVED)

DEHUMIDIFICATION CONTROL CONNECTION

NOT
USED

NOT
USED

BK

535.03-N1Y

CONNECTOR

THERMOSTAT

R
Y

G
W

NOT USED

DEHUMIDIFICATION CONTROL CONNECTION

("HUMIDISTAT" JUMPER MUST BE REMOVED)

BOARD

COOLING UNITS 208/230 VOLT

MODELS H*DA and H*DH

THERMOSTAT

TWO STAGE COOLING
MUST BE USED

X or L

C or B

R
C

Y
G

BK

R

Y1
Y2

G

W1

W2

OUTDOOR
UNIT

INDO OR UNIT
CONNECTO R BOARD

O

WIRE NUT

X

R

C

Y
Y1
Y2

G

W/W1
W2
BK

HEAT PUMPS 208/230 VOLT

MODELS E*FB and E*FH

OUTDOOR UNIT

NO

RED

BLU

BLK

YEL

BRN

H*DS CONTROL BOAR D

DEHUMIDIFICATION CONTROL CONNECTION

("HUMIDISTAT" JUMPER MUST BE REMOVED)

R
C

Y2 OUT

Y1
Y2

FIGURE 9 - Control Wiring / Transformer Accessory

10 Unitary Products Group

COOLING UNIT 208/230 MODELS H*DS

INDOOR UNIT
CONNECTOR BOARD

O

THERMOSTAT

R

Y

G
W

X
R
C

Y
Y1
Y2

G

DEHUMIDIFICATION CONTROL CONNECTION

("HUMIDISTAT" JUMPER MUST BE REMOVED)

FIELD
INSTALLED
JUMPER

W/W1

W2
BK

COOLING WITH ELECTRIC HEAT MODELS H*DA and H*DH

535.03-N1Y

OUTDOOR
UNIT

INDO OR UNIT

THERMOSTAT

TWO STAGE COOLING
MUST BE USED

X or L

R

C or B

CONNECTOR BOARD

O
X

R

C
Y

Y1
Y2

G

W1

W2

Y1
Y2

G

W/W1
W2
BK

COOLING WITH ELECTRIC HEAT MODEL H*DS

FIGURE 10 - Control Wiring / Electric Heat

WIRE NUT

- COOLING

OUTDOOR UNIT

NO

RED

BLU

BLK
YEL

BRN

H*DS CONTROL BOAR D

R
C

Y2 OUT

Y1
Y2

DEHUMIDIFICATION CONTROL CONNECTION

("HUMIDISTAT" JUMPER MUST BE REMOVED)

Unitary Products Group 11

THERMOSTAT

G

X or L

R

OUTDOOR
HEATPUMP

R

C
Y

G

O
X

W/W1

W2

INDOOR UNIT
CONNECTOR BOARD

("HUMIDISTAT" JUMPER MUST BE REMOVED)

Y1
Y2

BK

DEHUMIDIFICATION CONTROL CONNECTION

O

Y

W
E
T

X

B

R

O

Y

W

66

C or B

FIELD
INSTALLED
JUMPER

1

1

OUTDOOR
THERMISTOR

**

**

HEAT PUMP (1 Phase)

THERMOSTAT

G

X or L

R

OUTDOOR
HEATPUMP

R

C
Y

G

O
X

W2

INDOOR UNIT
CONNECTOR BOARD

("HUMIDISTAT" JUMPER MUST BE REMOVED)

Y1
Y2

BK

DEHUMIDIFICATION CONTROL CONNECTION

O

Y

W

E

T

X

B

R

O

Y

W

66

B or C

FIELD
INSTALLED
JUMPER

1

1

OUTDOOR
THERMISTOR

60
53

W/W1

**

**

MODELS E*FB

**TERMINAL NOT
A V AILABLE ON ALL
THERMOST ATS.

IMPORTANT NOTE:

HEA T PUMP JUMPER
A T BOTTOM OF THE
CONNECTOR BOARD
MUST BE REMOVED
WHEN AIR HANDLER
IS USED WITH A HEAT
PUMP UNIT.

FIGURE 11 - Control Wiring with Electric Heat

P.O. Box 1592, Yo rk, Pennsylvania USA 17405-1592
Subject to change without notice. Printed in U.S.A
Copyright  by York International Co rp ora tion 1993. All Rights Reserved.

HEAT PUMP MODELS E*FH

- HEAT PUMP

Supersedes: 535.03-N1Y