York SUNLINE ULTRA D1HE 036 User manual

CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
RENEWAL PARTS . . . . . . . . . . . . . . . . . . . . . . . . .3
APPROVALS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
PRODUCT NOMENCLATURE . . . . . . . . . . . . . . . .4
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . .17
See the following page for a complete Table of Contents.
NOTES, CAUTIONS AND WARNINGS
The installer should pay particular attention to the
words:NOTE,CAUTIONandWARNING.Notesare
intended to clarify or make the installation easier.
Cautions are given to prevent equipment damage.
Warnings are given to alert installer that personal
injury and/or equipment damage may resultif instal-
lation procedure is not handled properly.
CAUTION: READ ALL SAFETY GUIDES BEFORE
YOU START TO INSTALL YOUR FURNACE.
SAVE THIS MANUAL
INSTALLATION
MANUAL
M
ODELS: D1HE 036, 048 and
D2HE 060
SUNLINE ULTRATM
ELECTRIC / ELECTRIC SINGLE
PACKAGE AIR CONDITIONERS
035-13329-001-B-0504

035-13329-001-B-0504
2Unitary Products Group
TABLE OF CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
RENEWAL PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . 3
APPROVALS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
PRODUCT NOMENCLATURE . . . . . . . . . . . . . . . . . 4
LIMITATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
LOCATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
RIGGING AND HANDLING . . . . . . . . . . . . . . . . . . . .5
CLEARANCES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
FILTERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
CONDENSATE DRAIN . . . . . . . . . . . . . . . . . . . . . . .6
SERVICE ACCESS . . . . . . . . . . . . . . . . . . . . . . . . . . 6
THERMOSTAT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
POWER AND CONTROL WIRING . . . . . . . . . . . . . .6
COMPRESSORS. . . . . . . . . . . . . . . . . . . . . . . . . . . .7
OPTIONAL ECONOMIZER RAIN HOOD . . . . . . . . .7
DISCONNECT SWITCH BRACKET . . . . . . . . . . . . .9
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
COOLING SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . .15
PRELIMINARY OPERATION COOLING. . . . . . . . .15
COOLING SEQUENCE OF OPERATION . . . . . . . .15
SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . .15
HEATING SEQUENCE OF OPERATION . . . . . . . .15
TWO-STAGE HEATING. . . . . . . . . . . . . . . . . . . . . .16
HEAT ANTICIPATOR SETPOINTS. . . . . . . . . . . . . 16
CHECKING SUPPLY AIR CFM . . . . . . . . . . . . . . . .16
BELT-DRIVE BLOWER . . . . . . . . . . . . . . . . . . . . . .16
SECURE OWNER’S APPROVAL . . . . . . . . . . . . . .17
MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
NORMAL MAINTENANCE. . . . . . . . . . . . . . . . . . . . 17
LIST OF FIGURES
Fig. Pg.
1 CENTER OF GRAVITY . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 RECOMMENDED DRAIN PIPING . . . . . . . . . . . . . . . . . 6
3 ECOMONIZER RAIN HOOD ASSEMBLY (OPTION). . . 8
4 ENTHALPY SET POINT ADJUSTMENT . . . . . . . . . . . . 9
5 DIMENSIONS & CLEARANCES - 3, 4 & 5 TONS . . . . 10
6 TYPICAL FIELD WIRING . . . . . . . . . . . . . . . . . . . . . . . 11
7 BELT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8 PRESSURE DROP ACROSS A DRY
EVAPORATOR COIL VS. SUPPLY AIR CFM,
WITHOUT AIR FILTERS . . . . . . . . . . . . . . . . . . . . . . . 17
LIST OF TABLES
Tbl. Pg.
1 PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 SUPPLY AIR PERFORMANCE - 3-TON . . . . . . . . 12
3 SUPPLY AIR PERFORMANCE - 4 TON. . . . . . . . . 12
4 SUPPLY AIR PERFORMANCE - 5 TON. . . . . . . . . 13
5 STATIC RESISTANCES . . . . . . . . . . . . . . . . . . . . . 14
6 MOTOR AND DRIVE DATA- BELT-DRIVE
BLOWER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7 ELECTRICAL DATA- BASIC UNIT . . . . . . . . . . . . . 14
8 HEAT ANTICIPATOR SETTING. . . . . . . . . . . . . . . 16
9 BELT DRIVE SUPPLY AIR ADJUSTMENT
MOTOR PULLEY ADJUSTMENT. . . . . . . . . . . . . . 16

035-13329-001-B-0504
Unitary Products Group 3
GENERAL
YORK Model DHE units are single package air conditioners
designed for outdoor installation on a rooftop or a slab. Elec-
tric heaters are available as field-installed accessories.
The units are completely assembled on rigid, permanently
attached base rails. All piping, refrigerant charge, and electri-
cal wiring is factory-installed and tested. The units require
only electric power and duct connections at the point of instal-
lation.
The electric heaters have nickel-chrome elements and utilize
single point power connection.
INSPECTION
As soon as a unit is received, it should be inspected for possi-
ble 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. Refer to Form 50.15-NM for additional
information.
REFERENCE
Additional information on the design, installation, operation
and service of this equipment is available in the following ref-
erence forms:
RENEWAL PARTS
Refer to Parts Manual for complete listing of replacement
parts on this equipment.
APPROVALS
Design certified by CGA and UL listed as follows:
1. For use as a cooling only unit or cooling unit with electric
heat.
2. For outdoor installation only.
3. For installation on combustible material.
The enclosed installation instructions and any
applicable local, state, and national codes includ-
ing, but not limited to, building, electrical, and
mechanical codes.
Incorrect installation may create a condition where
the operation of the product could cause personal
injury or property damage.

035-13329-001-B-0504
4Unitary Products Group
PRODUCT NOMENCLATURE
LIMITATIONS
These units must be installed in accordance with the current
edition of the following national and local safety codes:
In USA:
1. National Electrical Code ANSI/NFPA No. 70.
2. Local electric utility requirements.
In Canada:
1. Canadian Electrical Code C22.1.
2. Canadian Installation Codes CAN/CGA-B149.1 and 2.
Refer to Table 1 for Unit Application Data.
If components are to be added to a unit to meet local codes,
they are to be installed at the dealer’s and / or the customer’s
expense.
Size of unit for proposed installation should be based on heat
loss / heat gain calculation made according to the methods of
Air Conditioning Contractors of America (ACCA).
LOCATION
Use the following guidelines to select a suitable location for
these units.
1. Unit is designed for outdoor installation only.
2. Condenser coils must have an unlimited supply of air.
Where a choice of location is possible, position the unit
on either north or east side of building.
3. For ground level installation, a level pad or slab should
be used. The thickness and size of the pad or slab used
should meet local codes and unit weight. Do not tie the
slab to the building foundation.
4. Roof structures must be able to support the weight of the
unit and its options and / or accessories. Unit must be
installed on a solid level roof curb or appropriate angle
iron frame.
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Model DEG 036 048 060
Voltage Variation 208/230V
Min. / Max.1 460V 208/230V 187 / 253
460V 414 / 506
Supply Air CFM, Nom. 1200 1600 2000
Wet Bulb Temperature (°F) of
Air on Evaporator Coil,
Min. / Max.
57 /
72 57 / 72 57 / 72
Dry Bulb Temperature (°F) of Air on Con-
denser Coil,
Min2 / Max.
45 /
120 45 / 120 45 / 120
Excessive exposure of this furnace to contami-
nated combustion air may result equipment dam-
age or personal injury. Typical contaminates
include: permanent wave solutions, chlorinated
waxes and cleaners, chlorine based swimming
pool chemicals, water softening chemicals, carbon
tetrachloride, Halogen type refrigerants, cleaning
solvents (e.g. perchloroethylene), printing inks,
paint removers, varnishes, hydrochloric acid, ce-
ments and glues, antistatic fabric softeners for
clothes dryers, masonry acid washing materials.

035-13329-001-B-0504
Unitary Products Group 5
5. Maintain level tolerance to 1/2" maximum across the
entire length or width of the unit.
6. Elevate the unit sufficiently to prevent any blockage of
the air entrances by snow in areas where there will be
snow accumulation. Check the local weather bureau for
the expected snow accumulation in your area.
RIGGING AND HANDLING
Exercise care when moving the unit. Do not remove any
packaging until the unit is near the place of installation. Rig
the unit by attaching chain or cable slings to the lifting holes
provided in the base rails. Spreaders, whose length exceeds
the largest dimension across the unit, MUST be used across
the top of the unit.
BEFORE LIFTING A UNIT, MAKE SURE THAT ITS
WEIGHT IS DISTRIBUTED EQUALLY ON THE CABLES
SO THAT IT WILL LIFT EVENLY.
Units may also be moved or lifted with a forklift. Slotted open-
ings in the base rails are provided for this purpose.
LENGTH OF FORKS MUST BE A MINIMUM OF 42".
Remove the nesting brackets from the four corners on top of
the unit. All screws that are removed when taking these
brackets off must be replaced on the unit.
Units may also be moved or lifted with a forklift. Slotted open-
ings in the base rails are provided for this purpose.
LENGTH OF FORKS MUST BE A MINIMUM OF 42".
Remove the nesting brackets from the four corners on top of
the unit. All screws that are removed when taking these
brackets off must be replaced on the unit.
Refer to Table 4 for unit weights and to Figure 1 for approxi-
mate center of gravity.
CLEARANCES
All units require certain clearances for proper operation and
service. Installer must make provisions for adequate combus-
tion and ventilation air in accordance with Section 5.3, Air for
Combustion and Ventilation of the National Fuel Gas Code,
ANSI Z223.1 (in U.S.A.) or Sections 7.2, 7.3 or 7.4 of Gas
Installation Codes CAN/CGA-B149.1 and .2 (in Canada) and/
or applicable provisions of the local building codes. Refer to
Figure 9 for the clearances required for combustible con-
struction, servicing, and proper unit operation.
DUCTWORK
Ductwork should be designed and sized according to the
methods in the manuals of the Air Conditioning Contractors
of America (ACCA).
A closed return duct system shall be used. This shall not pre-
clude use of economizers or outdoor fresh air intake. The
supply and return air duct connections at the unit should be
made with flexible joints to minimize the transmission of
noise.
The supply and return air duct systems should be designed
for the CFM and static requirements of the job. They should
If a unit is to be installed on a roof curb or special
frame other than a YORK roof curb, gasketing
must be applied to all surfaces that come in con-
tact with the unit underside.
An adhesive backed label is provided over the out-
side of the combustion air inlet opening to prevent
moisture from entering the unit which could cause
damage to electrical components. Allow this clo-
sure label to remain in place until the combustion
air hood is to be installed (refer to Figure 6).
FIGURE 1 - CENTER OF GRAVITY
Do not permit overhanging structures or shrubs to
obstruct condenser air discharge outlet, combus-
tion air inlet or vent outlet.
Front
Approximate
Center of
Gravity
AB
44-7/8"
82-1/4"
3, 4, 5 Ton
19-3/4"
40-3/4"
Dim.
A
B
Condenser
Coil End
Back

035-13329-001-B-0504
6Unitary Products Group
NOT be sized to match the dimensions of the duct connec-
tions on the unit.
Refer to Figure 5 for information concerning side and bottom
supply and return air duct openings.
FILTERS
1" filters are supplied with each unit. 2" replacement filters
may be used with no modification to the filter racks. Filters
must always be installed ahead of the evaporator coil and
must be kept clean or replaced with same size and type. Dirty
filters will reduce the capacity of the unit and will result in
frosted coils or safety shutdown. Minimum filter area and
required sizes are shown in Table 2.
CONDENSATE DRAIN
Plumbing must conform to local codes. Use a sealing com-
pound on male pipe threads. Install a condensate drain line
from the 3/4" PVC female connection on the unit to spill into
an open drain.
NOTE: The condensate drain line MUST be trapped to pro-
vide proper drainage. See Figure 2.
SERVICE ACCESS
Access to all serviceable components is provided by the fol-
lowing removable panels:
• Compressor compartment
• Heater compartment
• Blower compartment
• Main control box
• Filter compartment
• Motor Access (on units w/belt-drive option)
Refer to Figure 5 for location of these access panels.
THERMOSTAT
The room thermostat should be located on an inside wall
approximately 56" above the floor where it will not be subject
to drafts, sun exposure, or heat from electrical fixtures or
appliances. Follow manufacturer’s instructions enclosed with
thermostat for general installation procedure. Color coded
insulated wires (#18 AWG) should be used to connect ther-
mostat to unit. See Figure 4 for wiring details.
NOTE: If the unit has an economizer, remove jumper J1
from terminals 8 and 10 on the relay board to pre-
vent simultaneous operation of the compressor and
the economizer. If you want to control the econo-
mizer on a second stage of cooling, use a thermo-
stat with two stages of cooling.
POWER AND CONTROL WIRING
Field wiring to the unit must conform to provisions of the
National Electrical Code (NEC) ANSI/NFPA 70 (in USA), cur-
rent Canadian Electric Code (CEC) C22.1 (in Canada) and/or
local ordinances. The unit must be electrically grounded in
accordance with the NEC and CEC (as specified above) and/
or local codes. Voltage tolerances which must be maintained
at the compressor terminals during starting and running con-
ditions are indicated on the unit Rating Plate and Table 1.
The wiring harness furnished with this unit is an integral part
of a UL design certified unit. Field alteration to comply with
electrical codes should not be required.
A disconnect switch should be field provided for the unit. The
switch must be separate from all other circuits. Refer to Fig-
ure 5 for installation location. If any of the wire supplied with
the unit must be replaced, replacement wire must be of the
type shown on the wiring diagram.
Electrical lines must be sized properly to carry the load. USE
COPPER CONDUCTORS ONLY. Each unit must be wired
with a separate branch circuit fed directly from the meter
panel and properly protected.
When fastening ductwork to the side duct flanges
on the unit, insert the screws through the duct
flanges only. DO NOT insert the screws through
the casing.
Outdoor ductwork must be insulated and water-
proofed.
FIGURE 2 - RECOMMENDED DRAIN PIPING
Make sure that all screws are replaced on the unit
to maintain an air-tight seal.
When connecting electrical power and control wir-
ing to the unit, waterproof type connectors MUST
BE USED so that water or moisture cannot be
drawn into the unit during normal operation. The
above waterproofing conditions will also apply
when installing a field-supplied disconnect switch.

035-13329-001-B-0504
Unitary Products Group 7
Refer to Figure 6 for typical field wiring and to the appropriate
unit wiring diagram for control circuit and power wiring infor-
mation.
COMPRESSORS
On some units the compressor is mounted on springs which
have been tightened down for shipment only.
After this unit is installed, back out the compressor bolts until
the sleeve clears the top grommet.
.
OPTIONAL ECONOMIZER RAIN HOOD
The following procedure should be used when assembling an
economizer rain hood onto a unit. Refer to Figure 3. The out-
door and return air dampers, damper actuator, the linkage
and all the controls are factory mounted as part of the econo-
mizer option.
All of the hood components, including the filters, the gasket-
ing and the hardware for assembling are located above the
top filter racks within the filter section. The outdoor air sensor
is in the bag of parts located at the bottom of the return air
section.
1. With filter section access panel removed, take out hood
components, filters and sensor described above.
Remove and discard outdoor air opening cover on back
unit (Upper right hand corner).
2. Remove the 1/2" knockout (A) in the units rear panel
(located to the right side of the outdoor air opening).
Insert the two loose wires from inside the unit, into the
1/2" bushing provided. Insert wires and bushing into
knockout. Snap bushing into place.
3. Mount the outdoor air sensor to the rear panel, just
below the knockout described in Step 2. Secure with two
self-drilling screws at dimples (B) provided in the panel.
NOTE: Sensor must be positioned so that the sensing ports
are at the top (louvers pointing downward) and ter-
minal connections to the right.
4. Connect the two wires, indicated in Step 2, to the sensor
as follows:
• Wire #73 to terminal (+)
• Wire #74 to terminal (S)
5. Assemble the LH and RH side plates to the top cover (2
screws each side) to form the hood. Apply gasketing to
the flange surface on each side plate. Extend gasketing
1/4" beyond top and bottom of each flange to insure
adequate corner sealing. Secure this assembly to the
unit back panel (upper right hand corner). First, remove
screw (C) on unit top cover. Then slip flange of hood
cover in under flange of unit top cover, replace screw
(C), engaging hole (E) in hood flange and tighten. Attach
the two side plates to the unit panel by using two self-
drilling screws for each side plate at dimples (D) pro-
vided in the panel.
6. Position fillpiece at bottom of hood, between the two side
plates but do not secure at this time. (Slotted openings
MUST be downward for drainage). After fillpiece is prop-
erly positioned, note where contact is made with the unit
panel.
Remove fillpiece and apply gasket material to this area
to provide a seal. Reposition fillpiece and secure with 2
screws.
TABLE 1: PHYSICAL DATA
MODELS DHE
036 048 060
EVAPORA-
TOR
BLOWER
CENTRIFUGAL BLOWER (Dia. x Wd.
in.)
FAN MOTOR HP
12 x 10
1.5 12 x 10 1.5 12 x 10 1.5
EVAPORA-
TOR
COIL
ROWS DEEP 4 4 4
FINS PER INCH 13 13 13
FACE AREA (Sq. Ft.) 4.3 5.1 5.1
CONDENSER
FAN PROPELLER DIA. (in.) 24 24 24
FAN MOTOR HP 1/2 1/2 1/2
NOM. CFM TOTAL 4,500 4,200 4,200
CONDENSER
COIL ROWS DEEP 2 2 2
FINS PER INCH 18 18 18
FACE AREA (Sq. Ft.) 17.1 17.1 17.1
AIR FILTERS
(SEE NOTE) QUANTITY PER UNIT(15" x 20" x 1") 2 2 2
QUANTITY PER UNIT(14" X 25" X 1") 1 1 1
TOTAL FACE AREA (sq. ft.) 6.6 6.6 6.6
CHARGE REFRIGERANT 22 (lbs./oz.) 10 / 8 10 / 4 10 / 14
COMPRES-
SOR QUANTITY PER UNIT (HERMETIC- TYPE) 1 /
RECPT 1 / RECPT 1 / RECPT
WEIGHTS (LBS)
Basic Unit
3 Ton 565
4 Ton 610
5 Ton 645
ACCESSORIES / OPTIONS
Electric Heat
(Nominal KW) 5 - 7 KW 18
10 - 15 KW 23
20 - 30 KW 28
Economizer 50
Motorized Outdoor
Air Damper 26
Relief/Fixed
Air Damper 10
Roof Mounting Curb 92
Do Not loosen compressor mounting bolts.

035-13329-001-B-0504
8Unitary Products Group
7. Install the two filters into the hood assembly, sliding
down along retainers on side plates, into fillpiece at bot-
tom of hood.
NOTE: Install filters so that “Air Flow” arrows point toward
the unit.
8. Install filter cover over the end of the hood with one
screw (center of hood), securing filters into position.
9. The enthalpy set point for the dampers may now be set
by selecting the desired set-point from graph in Figure 4.
For a single enthalpy economizer, carefully turn the set-
point adjusting screw to the “A”, “B”, “C” or “D” setting
corresponding to the lettered curve. For a dual enthalpy
economizer, carefully turn the set-point adjusting screw
fully clockwise past the “D” setting.
10. To check that the damper blades move smoothly without
binding, carefully turn the minimum position adjusting
screw fullyclockwise and then energize and de-energize
terminals “R” to “G”. With terminals “R” to “G” energized,
turn the minimum position screw counterclockwise until
the desired minimum position has been attained.
Replace the filter section access panel.
FIGURE 3 - ECOMONIZER RAIN HOOD ASSEMBLY (OPTION)
When proceeding with steps 9 and 10, extreme
care must be exercised while turning both the set
point and minimum position adjusting screws to
prevent twisting them off.

035-13329-001-B-0504
Unitary Products Group 9
DISCONNECT SWITCH BRACKET
A special bracket for mounting a field-supplied disconnect
switch is provided in each unit. The bracket is shipped inside
the blower compartment taped to the top of the blower
housing.
Install the bracket on the left hand side of the unit as shown in
Figure 5. Several existing screws at the top of the unit and
one screw approximately midway down from the top will be
used for mounting the bracket. Screws should be loosened
only - NOT REMOVED. Matching holes in the bracket have
elongated keyways allowing easy installation. Re-tighten
screws after bracket is in place to ensure panels will remain
leak tight.
Electric heaters are available as field-installed accessories.
Refer to Form 530.18-N7.1V for installation instruction. These
UL approved heaters are located within the central compart-
ment of the unit (see Figure 5 for access panel) with the heat-
ing elements extending into the supply air chamber.
The heaters are wired for a single point power supply. Power
supply need only be brought into the single point terminal
block and thermostat wiring to the low voltage terminal strip
located in the upper portion of the unit control box.
Fuses are supplied, where required, by the factory. Some KW
sizes require fuses and others do not. Refer to the accessory
instruction for electrical data.
FIGURE 4 - ENTHALPY SET POINT ADJUSTMENT

035-13329-001-B-0504
10 Unitary Products Group
FIGURE 5 - DIMENSIONS & CLEARANCES - 3, 4 & 5 TONS

035-13329-001-B-0504
Unitary Products Group 11
CONTROL WIRING
CAUTION:
Label all wires prior to disconnection when servicing con-
trols. Wiring errors can cause improper and dangerous
operation. Verify proper operation after servicing.
FIGURE 6 - TYPICAL FIELD WIRING
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 







4    
   
   
 
 
 
RV
YC
GF
R
Y1
B
Y2
THERMOSTAT
1
TERMINALS UNIT TERMINAL STRIP TB1
24 VOLT
TRANSFORMER
COOLING ONLY (24 VOLT THERMOSTAT)
1
24 VOLT THERMOSTAT 2TH07701024 IF THE UNIT HAS AN ECONOMIZER,
REMOVE JUMPER J1 FROM TERMINALS 8 AND 10 ON THE RELAY BOARD
T
O PREVENT SIMULTANEOUS OPERATION OF THE COMPRESSOR AND
T
HE ECONOMIZER. IF YOU WANT TO CONTROL THE ECONOMIZER ON A
S
ECOND STAGE OF COOLING, USE THE THERMOSTAT 2TH04701224.
R C
Y
R
Y 1
Y 2
W 1
W
W 2
G
B
G
R H
T H E R M O S T A T
1
T E R M I N A L S
U N I T T E R M I N A L
S T R I P T B 1
2 4 V O L T
T R A N S F O R M E R
C O O L I N G / H E A T I N G ( 2 4 V O L T T H E R M O S T A T )
1
2 4 V O L T T H E R M O S T A T 2 T H 0 7 7 0 1 0 2 4 . I F T H E U N I T H A S A N E C O N O M I Z E R ,
R E M O V E J U M P E R J 1 F R O M T E R M I N A L S A N D 1 0 O N T H E R E L A Y B O A R D
T O P R E V E N T S I M U L T A N E O U S O P E R A T I O N O F T H E C O M P R E S S O R A N D
T H E E C O N O M I Z E R . I F Y O U W A N T T O C O N T R O L T H E R E C O N O M I Z E R O N A
S E C O N D S T A G E O F C O O L I N G O R H A V E A N D E L E C T R I C H E A T A C C E S S O R Y
W I T H T W O S T A G E S O F H E A T , U S E T H E R M O S T A T 2 T H 0 4 7 1 0 2 4
A D D
J U M P E R
R C
R H
Y 1
Y 2
W 1
W 2
G
L E D 1
L E D 2
C O M
A 1
A 2
T
T
B
R
Y 1
Y 2
G
B
X
N
W 2
W 1
T H E R M O S T A T
1
T E R M I N A L S U N I T T E R M I N A L
S T R I P T B 1 2 4 V O L T
T R A N S F O R M E R
T O R E M O T E S E N S O R
2 T H 0 4 0 7 0 2 2 2 4 I F U S E D
N O T
U S E D
A D D
J
U M P E R
A D D
J U M P E R
4
4
3
2
1
E L E C T R O N I C P R O G R A M M A B L E T H E R M O S T A T 2 E T 0 4 7 0 0 2 2 4 ( I N C L U D E S S U B B A S E )
2
S E C O N D S T A G E C O O L I N G I S N O T R E Q U I R E D O N U N I T S L E S S E C O N O M I Z E R .
3
S E C O N D S T A G E H E A T I N G I S O N L Y R E Q U I R E D O N U N I T S W I T H A T W O S T A G E
E L E C T R I C H E A T E R .
4
R E M O V E J U M B E R J 2 F R O M T E R M I N A L S 4 A N D 9 O N J U M P E R P L U G C O N N E C T O R
P 6 O N U N I T S W I T H E C O N M I Z E R . T E R M I N A L S A 1 A N D A 2 P R O V I D E A R E L A Y
O U T - P U T T O C L O S E T H E O U T D O O R E C O N O M I Z E R D A M P E R S W H E N T H E
T H E R M O S T A T S W I T C H E S T O T H E S E T - B A C K P O S I T I O N .
R H
R C
Y
W
G
R
Y 1
W 1
B
G
A D D
J U M P E R
T H E R M O S T A T
1
T E R M I N A L S U N I T T E R M I N A L
S T R I P T B 1
2 4 V O L T
T R A N S F O R M E R
1E L E C T R O N I C P R O G R A M M A B L E T H E R M O S T A T 2 E T 0 7 7 0 1 0 2 4 ( I N C L U D E S S U B B A S E ) .
I F T H I S U N I T H A S A N D E C O N O M I Z E R , R E M O V E J U M P E R J 1 F R O M T E R M I N A L S A N D
1 0 O N T H E R E L A Y B O A R D T O P R E V E N T S I M U L T A N E O U S O P E R A T I O N O F T H E
C O M P R E S S O R A N D T H E E C O N O M I Z E R . I F Y O U W A N T T O C O N T R O L T H E
E C O N O M I Z E R O N A S E C O N D S T A G E O F C O O L I N G , U S E T H E R M O S T A T 2 E T 0 4 7 0 0 2 2 4 .
C O O L I N G / H E A T I N G ( E L E C T R O N I C T H E R M O S T A T )
S I N G L E S T A G E

035-13329-001-B-0504
12 Unitary Products Group
TABLE 2: SUPPLY AIR PERFORMANCE - 3-TON
3 TON GAS HEAT VALUES SHOWN @ 230/460 VOLTS - SIDE DUCT CONNECTIONS
UNIT
SIZE
(MBH)
AIR FLOW
CFM
Avail able External Static Pres sure - IWG*
0.20 0.30 0.40 0.50 0.60 0.70 0.80
RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts
036
2000 843 860 880 925 919 1005 956 1065 993 1145 1030 1195 1067 1235
1900 817 775 854 850 893 920 930 995 970 1065 1008 1125 1046 1170
1800 790 700 828 760 867 840 906 905 944 980 985 1040 1025 1100
1700 - - 802 670 840 745 881 815 920 900 961 970 1001 1030
1600 ----818 665 858 740 898 820 940 890 980 950
1500 ------842 695 882 755 922 835 962 895
1400 ------833 650 867 705 904 765 942 820
1300 --------858 665 893 725 932 785
1200 --------847 640 880 680 916 730
UNIT
SIZE
(MBH)
AIR FLOW
CFM
Avail able External Static Pres sure - IWG*
0.90 1.00 1.10 1.20 1.30 1.40 1.50
RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts
036
2000 1103 1270 ------------
1900 1085 1210 ------------
1800 1064 1145 1102 1180 ----------
1700 1040 1075 1081 1115 1121 1140 --------
1600 1020 1005 1060 1050 1100 1085 --------
1500 1003 945 1044 995 1086 1035 --------
1400 982 880 1024 920 1067 965 1107 1000 ------
1300 970 835 1010 870 1053 920 1099 960 ------
1200 953 780 992 815 1034 855 1080 905 ------
NOTE: For 208 Volts, multiply values by 0.95.
*. Includes allowances for a wet evaporator coil, 1” filters and gas-fired heat exchangers. Refer to the Static Resistances Table for
resistance values on applications other than gas / electric units with side duct air flows.
TABLE 3: SUPPLY AIR PERFORMANCE - 4 TON
4 TON GAS HEAT VALUES SHOWN @ 230/460 VOLTS - SIDE DUCT CONNECTIONS
UNIT
SIZE
(MBH)
AIR FLOW
CFM Available External Static Pressure - IWG*
0.20 0.30 0.40 0.50 0.60 0.70 0.80
RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts
048
2000 843 860 880 925 919 1005 956 1065 993 1145 1030 1195 1067 1235
1900 817 775 854 850 893 920 930 995 970 1065 1008 1125 1046 1170
1800 790 700 828 760 867 840 906 905 944 980 985 1040 1025 1100
1700 - - 802 670 840 745 881 815 920 900 961 970 1001 1030
1600 ----818 665 858 740 898 820 940 890 980 950
1500 ------842 695 882 755 922 835 962 895
1400 ------833 650 867 705 904 765 942 820
1300 --------858 665 893 725 932 785
1200 --------847 640 880 680 916 730
UNIT
SIZE
(MBH)
AIR FLOW
CFM Available External Static Pressure - IWG*
0.90 1.00 1.10 1.20 1.30 1.40 1.50
RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts
048
2000 1103 1270 ------------
1900 1085 1210 ------------
1800 1064 1145 1102 1180 ----------
1700 1040 1075 1081 1115 1121 1140 --------
1600 1020 1005 1060 1050 1100 1085 --------
1500 1003 945 1044 995 1086 1035 --------
1400 982 880 1024 920 1067 965 1107 1000 ------
1300 970 835 1010 870 1053 920 1099 960 ------
1200 953 780 992 815 1034 855 1080 905 ------
NOTE: For 208 Volts, multiply values by 0.95.
*. Includes allowances for a wet evaporator coil, 1” filters and gas-fired heat exchangers. Refer to the Static Resistances Table for
resistance values on applications other than gas / electric units with side duct air flows

035-13329-001-B-0504
Unitary Products Group 13
TABLE 4: SUPPLY AIR PERFORMANCE - 5 TON
5 TON GAS HEAT MODELS SHOWN AT 230/460 VOLTS - SIDE DUCT CONNECTIONS
UNIT
SIZE
(MBH)
AIR FLOW
CFM
Available External Static Pressure - IWG*
0.20 0.30 0.40 0.50 0.60 0.70 0.80
RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts
060
2500 1059 1560 1077 1590 1095 1630 1114 1650 1134 1660 1158 1685 1181 1720
2400 1032 1405 1054 1470 1074 1525 1094 1560 1116 1595 1140 1620 1167 1640
2300 1005 1260 1024 1275 1049 1370 1069 1440 1090 1475 1116 1505 1142 1535
2200 980 1160 1002 1170 1022 1190 1044 1250 1066 1350 1090 1410 1117 1440
2100 930 1060 957 1070 983 1080 1010 1100 1039 1160 1064 1260 1092 1340
2000 877 950 908 975 941 1000 976 1020 1009 1050 1040 1100 1070 1225
1900 ----894 885 940 940 980 980 1014 1020 1047 1095
1800 ----855 815 903 860 950 905 988 940 1022 970
1700 ------884 815 925 850 964 880 1001 910
1600 ------864 770 908 805 948 835 987 870
1500 --------882 740 926 780 965 830
UNIT
SIZE
(MBH)
AIR FLOW
CFM
Available External Static Pressure - IWG*
0.90 1.00 1.10 1.20 1.30 1.40 1.50
RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts
060
2500 --------------
2400 1193 1665 ------------
2300 1170 1580 1202 1620 ----------
2200 1148 1480 1180 1530 ----------
2100 1121 1385 1155 1425 1190 1475 --------
2000 1100 1285 1133 1340 1169 1385 1205 1445 ------
1900 1079 1180 1110 1240 1143 1280 1178 1330 1222 1375 ----
1800 1058 1060 1090 1135 1122 1190 1158 1240 1196 1295 ----
1700 1035 960 1071 1030 1103 1100 1134 1140 1164 1175 1197 1205 - -
1600 1020 900 1056 965 1088 1035 1118 1065 1145 1105 1170 1130 1198 1150
1500 1004 860 1038 880 1070 925 1101 980 1130 1045 1158 1075 1184 1110
NOTE: For 208 Volts, multiply values by 0.95.
*. Includes allowances for a wet evaporator coil, 1” filters and gas-fired heat exchangers. Refer to the Static Resistances Table for
resistance values on applications other than gas / electric units with side duct air flows

035-13329-001-B-0504
14 Unitary Products Group
TABLE 5: STATIC RESISTANCES
EXTERNAL STATIC PRESSURE DROP
DESCRIPTION RESISTANCE, IWG CFM
1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000
Economizer* † 0.07 0.08 0.09 0.11 0.13 0.15 0.17 0.20 0.23 0.26 0.30
Electric Heaters15 - 15 KW 0.04 0.05 0.06 0.07 0.08 0.10 0.12 0.14 0.16 0.19 0.22
20 - 30 KW 0.06 0.07 0.08 0.09 0.11 0.13 0.15 0.17 0.20 0.23 0.26
Bottom Duct Connections*0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.14 0.16 0.19 0.22
Cooling Only‡0.08 0.10 0.12 0.14 0.16 0.18 0.20 0.23 0.26 0.29 0.32
*. Deduct these resistance values from the available external static pressure shown in the respective Blower Performance Table.
†. The pressure thru the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return air duct system is less than 0.25 IWG,
the unit will deliver less CFM
‡. Add these resistance values to the available static resistance in the respective Blower Performance Table.
TABLE 6: MOTOR AND DRIVE DATA- BELT-DRIVE BLOWER
MODEL BLOWER RANGE
(RPM)
MOTOR*ADJUSTABLE
MOTOR PULLEY FIXED BLOWER PULLEY BELT
HP RPM FRAME
SIZE SERVICE FACTOR PITCH DIA. (IN.) BORE PITCH DIA. (IN.) BORE PITCH LENGTH DESIGNATIONS-
DHE036 790 - 1,120 1-1/2 1,725 56 1.15 2.4 - 3.4 7/8 5.7 137.3 A36
DHE048 790 - 1,120 1-1/2 1,725 56 1.15 2.4 - 3.4 7/8 5.7 137.3 A36
DHE060 850 - 1,220 1-1/2 1,725 56 1.15 2.4 - 3.4 7/8 5.2 137.3 A36
*. All motors have solid bases and are inherently protected. These motors can be selected to operate into their service factor because they are located in the moving air,
upstream of any heating device
TABLE 7: ELECTRICAL DATA- BASIC UNIT
MODEL
DHE POWER
SUPPLY
VOLTAGE LIMITATIONS
(SEE NOTE 1) COMPRESSOR
COND.
FAN
MOTOR,
FLA
SUPPLY
AIR
BLOWER
MOTOR,
FLA
TOTAL UNIT
AMPACITY
AMPS
MAX. FUSE
SIZE (SEE
NOTE 2) AMPS
MAX HACR
BREAKER
SIZE AMPS
MIN. MAX. RLA LRA FLA
036 208/230-3-60 187 253 14.1 110.0 2.3 5.3 25.2 35 35
460-3-60 414 504 7.1 54.0 1.4 3.1 13.3 20 20
048 208/230-3-60 187 253 10.0 110.0 2.3 5.2 23.9 35 35
460-3-60 414 504 5.2 54.0 1.4 2.6 12.4 15 15
060 208/230-3-60 187 253 16.0 137.0 2.3 6.0 28.3 40 40
460-3-60 414 504 8.3 69.0 1.4 3.0 14.8 20 20
Note: 1. Rated in accordance with ARI Standard 110, utilization range “A”. 2. Dual Element, time delay type. 3. Based on 75º copper conductors.

035-13329-001-B-0504
Unitary Products Group 15
OPERATION
COOLING SYSTEM
The cooling section is a complete factory package utilizing an
air-cooled condenser. The system is factory-charged with
Refrigerant-22. The compressor is hermetically sealed and
internally sprung.
The compressors have inherent (internal) protection. If there
is an abnormal temperature rise in the compressor, the pro-
tector will open to shut down the compressor.
PRELIMINARY OPERATION COOLING
After the installation has been completed, the crankcase
heater of the compressor must be energized for at least 4
hours before starting the unit. After this initial warm-up, the
compressor should be given three false starts (energized just
long enough to make a few revolutions) with a 5 minute delay
between each start before being put into full time service.
NOTE: Prior to each cooling season, the crankcase heater
must be energized at least 10 hours before the sys-
tem is put into operation.
COOLING SEQUENCE OF OPERATION
Single-Stage Cooling: When the thermostat calls for “cool-
ing”, “R” is closed to “G” and “Y1" (wiring schematic) which
completes the low voltage control circuit, immediately ener-
gizing the compressors, condenser fan motor and blower
motor simultaneously.
Two-Stage Cooling: A two-stage cooling thermostat may be
used if the unit has an economizer. First-stage cooling is pro-
vided by the economizer if the outdoor air enthalpy is accept-
able, and second-stage cooling is provided by the
compressor. Jumper wire J1 must be removed. Refer to unit
wiring diagram.
After the thermostat is satisfied and opens, the blower will
continue to run for a short time. All other components will
stop.
SAFETY CONTROLS
The refrigerant system is equipped with the following safety
controls:
1. A Suction Line Freezestat to protect against low evapo-
rator temperatures due to a low air flow or a low return
air temperature.
2. A High Pressure Cutout Switch to protect against exces-
sive discharge pressures due to a blocked condenser
coil or a condenser motor failure.
3. A Low Pressure/Loss of Charge Switch to protect
against loss of refrigerant charge.
If either of the above safety controls opens, the refrigerant
system will be locked out. The lock out of the system can be
reset by opening the 24V circuit either at the room thermostat
or at the unit disconnect.
HEATING SEQUENCE OF OPERATION
The following sequence of operation is based on using a
standard single-stage or two-stage heating thermostat.
WITH POWER TO UNIT AND THERMOSTAT IN THE HEAT-
ING MODE
Single-Stage Heating:
a. If the fan switch is in the “ON” position, the evapora-
tor blower motor relay (BR) will be energized
through terminal G to provide continuous blower
operation. If the fan switch is in the “AUTO” position,
the blower will operate only when there is a call for
heating by the thermostat.
b. Upon a call for heat by the thermostat, the first stage
of heat will be energized. Sequencer 1S (or
contactor 2M) is al-ways the first and last to com-
plete its timing cycle and controls power to the evap-
orator blower motor.
c. The thermostat will cycle the electric heat to satisfy
the heating requirements of the conditioned space.

035-13329-001-B-0504
16 Unitary Products Group
TWO-STAGE HEATING:
a. If the fan switch is in the “ON” position, the evapora-
tor blower motor relay (BR) will be energized
through terminal G to provide continuous blower
operation. If the fan switch is in the “AUTO” position,
the blower will operate only when there is a call for
heating by the thermostat.
b. Upon a call for first-stage heat by the thermostat, the
first stage of heat will be energized.
c. The thermostat will cycle the electric heat to satisfy
the heating requirements of the conditioned space.
CONTINUOUS BLOWER - Continuous blower operation is
possible by closing the R to G circuit on the thermostat.
HEAT ANTICIPATOR SETPOINTS
It is important that the anticipator setpoint be correct. Too
high of a setting will result in longer heat cycles and a greater
temperature swing in the conditioned space. Reducing the
value below the correct setpoint will give shorter “ON” cycles
and may result in the lowering of the temperature within the
conditioned space. Refer to Table 8 for the required heat
anticipator setting.
CHECKING SUPPLY AIR CFM
The speed of the supply air blower will depend on the
required CFM, the unit accessories and the static resistances
of both the supply and the return air duct systems. With this
information, the speed for the supply air blower can be deter-
mined from the static resistance and blower performance
data on Tables 3 thru 5.
Knowing the required blower RPM and the blower motor HP,
the speed setting for the direct-drive supply air motor can be
determined.
The setting (turns open) for the belt-drive supply air motor
pulley can be determined from Table 9.
BELT-DRIVE BLOWER
All units with belt-drive blowers have single-speed motors.
The variable pitch pulley on the blower motor can be adjusted
to obtain the desired supply air CFM.
Refer to Table 6 for blower motor and drive data. The tension
on the belts should be adjusted as shown in Figure 7.
Start the supply air blower motor. Adjust the resistances in
both the supply and the return air duct systems to balance
the air distribution throughout the conditioned space. The job
specifications may require that this balancing be done by
someone other than the equipment installer.
To check the supply air CFM after the initial balancing has
been completed:
TABLE 8: HEAT ANTICIPATOR SETTING
NOMINAL
HEATER
SIZE KW VOLTAGE SETTING, AMPS
TH1 TH2
5
7
10
15
20
30
240-3-60
0.35
0.35
0.35
0.35
0.35
0.35
-
-
-
0.19
0.38
0.38
7
10
15
20
30
480-3-60
0.35
0.35
0.35
0.37
0.37
-
-
-
0.29
0.29
TABLE 9: BELT DRIVE SUPPLY AIR ADJUSTMENT
MOTOR PULLEY ADJUSTMENT
TURNS
OPEN*
*.Pulley can be adjusted in half-turn increments.
BLOWER DRIVE RANGE (RPM)
3 TONS 4 TON 5 TON
5780 790 850
4842 856 924
3904 922 998
2966 988 1072
11028 1054 1246
01090 1120 1220
FIGURE 7 - BELT ADJUSTMENT
SPANLENGTH
DEFLFORCE
*NEVERLOOSEN
(A) (C)*
(D)
CAUTION
Procedureforadjustingbelt tension:
1.Loosennut(D)fromthemotormount.
2.Neverloosennuts(C)fromeachotherwhilelooseningnut(
D).
3.Adjust thetensionbyturningbolt(B).
4.Donotloosenthefournuts(topandbottom)(A);unlessadditionaltensioning
distanceisreq
uired;immediatelyre-tightentheseboltsifloosened.
5.Useabelt tensioncheckertoapplyaperpendicularforcetoonebeltat the
midpo
intof thespanasshown.Thedeflectionforceshouldbeapplied
untilaspecificdeflectiondistanceof4mm(5/32")isobtained.Todetermin
e
thedeflectiondistancefromnormalposition,useastraightedgefrom
sheavetosheaveasareferenceline.Therecommendeddeflection
force
isasfollows:
Tensionnewbeltsat themax.deflectionforcerecommendedforthebelt
section.Checkthebelt tensionatleast twotimesdu
ringthefirst24hoursof
operation.Anyre-tensioningshouldfallbetweenthemin.andmax.
deflectionforcevalues.
6.Afteradjusting,re
-tightennut(D)against themotormount takingcarenot
toloosennuts(C).
(B)

035-13329-001-B-0504
Unitary Products Group 17
1. Remove the (two) 5/16" dot plugs from the holes located
on the filter access panel side of the unit.
2. Insert at least 8" of 1/4 inch tubing into each of these
holes for sufficient penetration into the air flow on both
sides of the evaporator coil.
NOTE: The tubes must be inserted and held in a position
perpendicular to the air flow so that velocity pres -
sure will not affect the static pressure readings.
3. Using an inclined manometer, determine the pressure
drop across a dry indoor coil. Since the moisture on an
indoor coil may vary greatly, measuring the pressure
drop across a wet coil under field conditions would be
inaccurate. To assure a dry coil, the compressors should
be de-energized while the test is being run.
4. Knowing the pressure drop across a dry coil, the actual
CFM through the unit can be determined from the curve
in Figure 8.
5. After readings have been obtained, remove the tubes
and seal the holes with the 5/16” dot plugs removed in
Step 1.
NOTE: De-energize the compressors before taking any test
measurements to assure a dry indoor coil.
SECURE OWNER’S APPROVAL
When the system is functioning properly, secure the owner’s
approval. Show him the location of all disconnect switches
and the thermostat. Teach him how to start and stop the unit
and how to adjust temperature settings within the limitations
of the system.
MAINTENANCE
NORMAL MAINTENANCE
FILTERS - Inspect once a month. Replace disposable or
clean permanent type as necessary. DO NOT replace perma-
nent type with disposable.
MOTORS - Indoor fan and outdoor fan motors are perma-
nently lubricated and require no maintenance.
OUTDOOR COIL - Dirt should not be allowed to accumulate
on the outdoor coil surface or other parts in the air circuit.
Cleaning should be as often as necessary to keep coil clean.
Use a brush, vacuum cleaner attachment, or other suitable
means. If water is used to clean coil, be sure power to the
unit is shut off prior to cleaning.
NOTE: Exercise care when cleaning the coil so that the coil
fins are not damaged.
Do not permit the outdoor air discharge to be obstructed by
overhanging structures of shrubs.
FIGURE 8 - PRESSURE DROP ACROSS A DRY
EVAPORATOR COIL VS. SUPPLY AIR CFM,
WITHOUT AIR FILTERS
Failure to properly adjust the total system air quan-
tity can result in poor system performance.
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
750 1250 1750 2250 2750 3250 3750
036
048
NOMINAL CFM
PRESSURE DROP (IWG)
060
Prior to any of the following maintenance proce-
dures, shut off all power to the unit to prevent per-
sonal injury.

035-13329-001-B-0504
18 Unitary Products Group

035-13329-001-B-0504
Unitary Products Group 19

Subject to change without notice. Printed in U.S.A. 035-13329-001-B-0504
Copyright © 2004 by Unitary Products Group. All rights reserved. Supersedes: 035-13329-001-A-0204
Unitary 5005 Norman
Products York OK
Group Drive 73069
®