Page 1
®
SUNLINE 2000
ELECTRIC / ELECTRIC
SINGLE PACKAGE AIR CONDITIONERS
INSTALLATION INSTRUCTION
MODELS D4CE 036, 048 & 060 (10 SEER)
CAUTION
SCROLL COMPRESSORS
OPERATE IN ONLY ONE
DIRECTION.
If the compressor is
experiencing:
- low amperage draw
- similar discharge and
suction pressure
- increased noise level
It is operating in reverse.
Switch two line voltage
connections to correct.
GENERAL
YORK Model DCE units are single package air conditioners
designed for o utdoor in stalla tion on a r ooftop or a slab. Electr ic
heaters are available as field- i ns ta ll ed accessories.
The units are completely assembled on rigid, permanently
attached base ra ils. All piping, refr igerant charge , and electrical
wiring is fa ctory-installed and tested. T he units require only
electric power an d duct co nnecti ons at the po int of i nstall ation.
The electric he aters have nic kel-chro me elements an d utilize
single point power connection.
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 car rier’s freig ht bill. A sepa rate
request for inspec tion by the carr ier’s agent sho uld 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 eq uipment is availa ble in the followi ng reference form s:
55.70-N1 -General Installation
•
55.70-N2 -Pre-start & Post-start Check List
•
530.18-N1.2 V -Economizer Ac ce ss ory
•
Supersedes: 530. 18 -N 7 Y (9 93)
MODEL D2CE 072 (9 EER)
(STYLE B & Belt-Drive Option)
530.18-N1.13V -M an. Out door Air Damp er Acc y 0-3 5%
•
530.18-N1.14V -Man. Outdoor Air Damper Accy 0-100%
•
530.18-N1.12V - Mot oriz ed O utdo or Air Damp er Acc y..
•
530.18-N1.8V -Coil Guard
•
530.18-N7.1V -Electric Heater Accessory
•
530.18-N7.2V -Fuse Block Accessory
•
690.15-N25V -Low Ambi en t to 0°F
•
Renewal Parts:
Refer to Part s Manual for comple te listing of repla cement
•
parts on this equipment.
All forms referenced in this instru ction may be ordered from:
Publications Distribution Center
Unitary Products Grou p
P.O. Box 1592, York, PA 17405
APPROVALS
Design certified by U.L. and C.G.A. as follo ws:
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.
530.18-N7Y (2 95 )
035-12855
Installer should pay particular attention to the words:
the instal lation ea sier . Cautio ns are giv en to prev ent equip ment dam age. W arnings are given to alert installer that personal injury
and/or equipment damage may result if installation procedure is not handled properly.
THIS PRODUCT MUST BE INSTALLED IN STRICT COMPLIANCE WITH THE ENCLOSED INSTALLATION INSTRUCTIONS
AND ANY APPLICABLE LOCAL, STAT E, AND NA TIONAL CODES INCLUDING, 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, PROPER T Y DAM AGE AND/OR DEATH.
DE-ENERGIZE THE ELECTRICAL POWER TO THE UNIT BEFORE ATTEMPTING TO INSPECT, REPAIR OR PERFORM
MAINTENANCE TO THE UNIT.
NOTE, CAUTION
CAUTION
WARNING
WARNING
and
WARNING
. Notes are inte nd ed to cl arif y o r make
Page 2
530.18-N7Y
TABLE OF CONTENTS
General................................................................................1
Inspection.............................................................................1
Reference ............................................................................ 1
Approvals ............................................................................. 1
Nomenclature.......................................................................2
INSTALLATION
Limitations............................................................................3
Location ............................................................................... 3
Rigging and Handling .......................................................... 3
Clearances...........................................................................3
Ductwork .............................................................................. 3
Filters ................................................................................... 3
Condensate Drain................................................................ 4
Service Access..................................................................... 4
Thermostat.................. ........ ........ ........ ........ ........ ........ ........ .4
Power and Control Wiring.................................................... 4
Blower Speed Selection....................................................... 4
Scroll Compressors.............................................................. 4
Optional Economizer Rain Hood.........................................5
Disconnect Switch Bracket For Optional Belt-Drive ............ 6
Electric Heaters....................................................................8
TABLES
No. Description Page
1 Unit Applicatio n Da ta............ .... .... .... .... .... .. 3
2 Physical Data.............................................. 4
3 Blower Perf. - 3-6 Ton Direct-Drive............. 8
4 Blower Perf. - 3 & 4 Ton Belt-Drive............. 9
5 Blower Perf. - 5 & 6 Ton Belt-Drive............. 10
6 Static Resistances ...................................... 11
7 Motor and Drive Data - Belt-Drive ............. 11
8 Electrical Data - Direct-Drive...................... 11
9 Electrical Data - Belt-Drive.......................... 11
10 Supperheat, 036 ..... .......................... .......... 12
11 Supperheat, 048..................... .. ............ .. .. .. 12
12 Supperheat, 060 ..... .......................... .......... 12
13 Supperheat, 072 ..... .......................... .......... 13
14 Heat Anticipator Setting................. ...... ...... . 14
15 Motor Pulley Adj ustment.................... ...... ... 15
OPERATION
Cooling System.................................................................. 14
Cooling Sequence of Operation.........................................14
Safety Controls .................................................................. 14
Heating Sequence of Operation ........................................ 14
Heat Anticipator Setpoints ................................................. 14
Checking Supply Air CF M............... .... .... .... .... .... .... .... .... ...14
Secure Owner’s Approval.................................................. 15
MAINTENANCE
Normal Maintenance......... .. .. .. .. ............ .. .. .. .. ............ .. .. .. .. .16
PRODUCT NOMENCLAT URE
D 4 C E A
PRODUCT CATEGORY
D = Single Package Air Conditioner
(Air Cooled)
PRODUCT GENERAT ION
2 = 2nd Generation
4 = 4rd Generation
PRODUCT IDENTIFIER
CE = Cooling
FIGURES
No. Description Page
1 Center of Gravity......................................... 3
2 Recommended Drain Piping....................... 4
3 Economizer Rain Hoo d Assem bly.............. 5
4 Typical Field Wiring..................................... 6
5 Dimensions and Clearances....................... 7
6 Enthalpy Setpoint Adjustment..................... 8
7 Belt Adjustment........................................... 15
8 Press. Drop vers us Su pp ly Ai r CFM........... 15
30 6 2 5
VOLTAGE CODE
06 = 208/230-1-60
25 = 208/230-3-60
46 = 460-3-60
58 = 575-3-60
NOMINAL COOLING
CAPACITY
036 = 3 Ton
048 = 4 Ton
060 = 5 Ton
072 = 6 Ton
FACTORY INSTALLED
HEAT
A = Cooling Only
2 Unitary Products Group
Page 3
INSTALLATION
LIMITATIONS
These units mu st be installe d in accorda nce with the cu rrent
edition of the following nation al and loc al safety codes:
In USA:
1. Natio na l El ec tr ic al C o de 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.
530.18-N7Y
the largest dimension across the unit,
be used acr oss
MUST
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
openings in the base rails are pr ovided 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 2 for unit weights and to Figure 1 for approximate
center of gravity.
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 fo r pr op os ed ins tall at io n sh ou ld be base d on hea t
APPROXIMATE
CENTER OF
GRAVITY
FRONT
loss / heat gain calculation made according to the methods of
Air Conditioning Contractors of America (ACCA).
TABLE 1
Wet Bulb Temperature (°F) of Air on
Evaporator Coil, Min. / Max.
Dry Bulb Temperature (°F) of Air on
Condenser Coil, Min.
1
Utilization range “A” in accordance with ARI St anda rd 110.
2
A low ambient accessory is available for operation down to 0°F
- UNIT APPLICATION DATA
Voltage Variation
Min. / Max
.1
2
/ Max.
208/230V 187 / 253
460V 414 / 504
575V 518 / 630
57 / 72
45 / 120
LOCATION
Use the follow ing guidelines to selec t a suitable location for
these units.
1. Unit is designed for outdoor installation only.
2. Condenser must ha ve a n un li mited s up pl y of ai r. Where a
choice of l ocat ion is p ossi ble, posi tion un it on eith er nort h
or east side of building.
3. For ground level installation, a level pad or slab should be
used. The thic kness and size of the pad or sl ab used should
meet local codes and unit weight. Do not tie the slab to the
building foundation.
7
⁄
44
“
8
32-1/8
FIG. 1
- CENTER OF GRAVITY
A
15-1/4
B
21
CLEARANCES
All units re quire certain cl earances for prope r operation and
service. Refer to Figure 5 for the clearances required for
combustible co nstructi on, ser vicing, and proper unit oper ation.
WARNING:Do not permit overhanging st ructures or shrubs to
obstruct outdoor air discharge outlet.
DUCTWORK
Ductwork should be designed and sized according to the
methods in Manu al Q of the Air Condi tioning Contractors of
America (ACCA).
A closed return duct system shall be used. This shall not
preclude us e of econ omizers or ou tdoor fres h air intake . The
supply an d return air d uct connecti ons at the unit s hould be
made with flexib le joint s to min imize th e tra nsmis sion of noise.
The supply a nd r etur n air duct s yste ms sh ould b e desi gned for
1
⁄
82
“
48-11/32
4
Dim. 3- 5 To n 6 Ton
A 19-3/4" 22"
B 40-3/4" 44"
the CFM and static requirements of the job. They should NOT
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.
CAUTION: If a unit i s to be in st al le d o n a roof cu rb or sp ec ia l
frame other than a YORK roof curb, gasketing must
be applied to all su rfaces that come in con tact w ith
the unit underside.
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
be sized to match the dimensions of the duct connections on
the unit.
CAUTION: 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 waterproofed.
Refer to Fig ure 5 for i nformatio n concerni ng side and bo ttom
supply and return air duct openings.
air entrances by snow in areas where there will be snow
accumulation . Chec k the loca l weather bur eau for th e expected snow accumulation in your area.
RIGGING AND HANDLING
Exercise care when moving the unit. Do not remove any
packaging unti l the unit is ne ar the place of installa tion. Rig the
unit by attaching chain or cable slings to the lifting holes
provided in the base rails. Spreaders, whose length exceeds
Unitary Products Group 3
FILTERS
1" filters ar e supp lied with each un it. 2" r eplace ment filt ers m ay
be used wi th no modification to th e filter racks. Filters must
always be installed ahead of the evaporator coil and must be
kept clean or re placed wit h same size and t ype. Dir ty filt ers will
reduce the cap acit y of t he un it an d wi ll re sult in fros ted coil s or
safety shutdown. Minimum filter area and required sizes are
shown in Table 2.
Page 4
530.18-N7Y
CONDENSATE DRAIN
Plumbing must conform to local codes. Use a sealing
compound on male pipe threads. Install a condensate drain line
from the 3/4" PVC fem ale connecti on on the unit to spill in to an
open drain.
NOTE: The condensate drain line MUST be trapped to pro-
vide proper dr ai na ge . See Figure 2.
FIG. 2
- RECOMMENDED DRAIN PIPING
SERVICE ACCESS
Access to all serviceable components is provided by the
following removable panels:
•
Compressor compartment
•
Heater compartment
•
Blower compartment
•
Main control bo x
•
Filter compartment
•
Motor Access (on unit s w/b elt- dr ive op tion )
Refer to Figure 5 for location of these access panels.
CAUTION: Make sure that all screws are replac ed on th e
unit to maintai n an air-tight seal.
THERMOSTAT
The room thermostat should be located on an inside wall
approximatel y 5 6" ab ove the flo or wh ere it will not be subj ect
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
thermostat to unit. See Figure 4 for wiring details.
NOTE: If the unit has an economizer, remove jumper J1
from terminals 8 an d 10 on the relay board to prevent simultaneous operation of the scroll compressor and the econom i ze r. If you want to control the
economizer on a second stage of cooli ng , us e a
thermostat 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), current 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 scroll compressor terminals during starting and running
conditions are indicated on the unit Rating Plate and Table 1.
The wiring harness furn ished with th is unit is an inte gral par t of
a UL and CGA design cert if ie d un it. Fi el d al te ra ti on t o co mpl y
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 Figure 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 mu st be size d prope rly to carry the load. USE
COPPER CONDUCTORS ONL Y. Each unit must be wir ed with
a separate branch circuit fed directly from the meter panel and
properly protected.
CAUTION: When connecting electrical powe r an d co nt ro l
wiring to the unit, waterproof type connectors
MUST BE USED so that water or moisture cannot be drawn into the unit during normal operation. The abov e waterproofing conditions will
also apply when installing a field-supplied disconnect switch.
Refer to Figur e 4 fo r ty pi ca l fi el d wir in g an d to the approp ri at e
unit wiring diagram for control circuit and power wiring
information.
BLOWER SPEED SELECTION
Three blower mo tor speeds a re availa ble on the 3, 4 and 5 ton
direct-drive units. The 6 ton direct-drive unit has a single speed
blower motor. The speed selection for the 3, 4 and 5 ton
direct-drive units is determined by the CFM and ESP
requirements of the applications. All units with belt-drive option
have an adjustable motor pulley to achieve the above
conditions.
All direct-drive units are shipped with the black wire (labeled
#8) connected to the high speed tap on the blower motor. If a
lower blower m otor speed is de sired, this wire should be mov ed
to the medium or low speed tap on the motor.
SCROLL COMPRESSOR
These units are shipped with the scroll compressor mountings
factory-adjusted and ready for operation.
CAUTION: Do Not loosen the scroll compressor mounting bolts.
TABLE 2
BLOWER
(SEE NOTE)
CHARGE REFRIGERANT 22 (lbs./oz.) 5/8 6/8 6/8 10/ 0
4 Unitary Products Group
- PHYSICAL DATA
EVAP.
EVAP.
COIL
COMPR.
TYPE
COND.
FAN
COND.
COIL
AIR
FILTERS
CENTRIFUGAL BLOWER (Dia. x Wd. in.)
FAN MOTOR HP (Direct-Drive)
FAN MOTOR HP (Belt-Drive)
ROWS DEEP
FINS PER INCH
FACE AREA (Sq. Ft.)
HERMETICALLY SEALED (Qty. = 1) BRISTOL SCROLL
PROPELLER DIA. (in.)
FAN MOTOR HP
NOM. CFM TOTAL
ROWS DEEP
FINS PER INCH
FACE AREA (Sq. Ft.)
QUANTITY PER UNIT (15" x 20" x 1")
QUANTITY PER UNIT (14" X 25" X 1")
TOT AL FACE AREA (sq. ft.)
MODELS
UNIT SIZE
036 048 060 072
12 x 10
3,400
1
1
1
3
13
3.6
24
1
1
16
17.1
2
1
6.3
12 x 10
⁄
2
⁄
2
⁄
4
3,400
3
1
1
3
13
4.3
24
1
1
16
17.1
2
1
6.3
12 x 10
⁄
4
⁄
4
1
1
⁄
1
⁄
2
3
13
5.1
24
1
⁄
4
3,400
1
22
17.1
2
1
6.3
2
12 x 11
1
1
⁄
1
2
4
13
5.1
24
1
⁄
4
3,300
2
16
16.7
2
1
6.3
WEIGHTS (LBS)
3 Ton 515
Basic Unit
ACCESSOR IE S / O PTIONS
Electric Heat
(Nominal KW)
Economizer 50
Motorized Outdoor
Air Damper
Relief/Fixed
Air Damper
Roof Mounting Curb 92
Belt-Drive Blower 5
4 Ton 565
5 Ton 590
6 Ton 670
5 - 7 KW 18
10 - 15 KW 23
20 - 30 KW 28
26
10
Page 5
OPTIONAL ECONOMIZER RAIN HOOD
The following procedure should be used when assembling an
economizer rain hood onto a unit. Refer to Figure 3. The
outdoor and return air dampers, damper actuator, the linkage
and all the controls are factory mounted as part of the
economizer option.
All of the hood com pon ents , in clud ing the filt er s, t he g aske ting
and the hardware for assembling are located ab ove the top filter
racks with in the fil ter se ctio n. The outd oor a ir sens or is in th e
bag of parts locat ed at the bottom of the r et urn air section.
1. With filter section access panel removed, take out hood
components, filters and sensor described above. R emove
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). In se rt
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 sens or to the re ar pan el, 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
4. Connect the two wires, indicated in Step 2, to the sensor
as follows:
5. Assemble the LH an d RH side pl ates to th e top cove r
(2 screws ea ch si de ) t o fo rm th e hood . A pp ly gasketing to
the flange surface on each side plate. Extend gasketing
1/4" beyond t op and bo ttom of each fl ange to in sure ade quate corner sealing. Secure this assembly to the unit back
panel (upper right hand corner). First, remove screw (C) on
ports are a t the top (louve rs pointing downw ard)
and terminal connections to the right.
•
Wire #73 to terminal (+)
•
Wire #74 to terminal (S)
530.18-N7Y
unit top cover . Then sli p flange of hood c over in under flan ge
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-dri lling screws for ea ch side
plate at dimples (D) provided 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 properly
positioned, n ote wher e con tact is made with t he uni t pa nel.
Remove fillpiece and apply gasket material to this area to
provide a seal. Reposition fillpiece and secure with 2
screws.
7. Install the two filters into the hood assembly, sliding down
along retainers on side plates, into fillpiece at bottom 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.
CAUTION: When proceeding with steps 9 and 10, extreme
care must be ex ercise d wh ile tur ning both the se t
point and minimum position adjusting screws to
prevent twistin g th em of f.
9. The enthalpy set point f or th e dampers may now be se t by
selecting the desired set-point from graph in Figure 6. For
a single enth alpy economizer, carefully tur n 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 fully clockwise and th en energize and de -energize
terminals “ R” to “G”. Wi th terminal s “R” to “G” en ergized,
turn the mi nimum po sition s crew c ountercl ockwise until the
desired minimum position has been attained.
1 1. Replace the filter section access panel.
FILTER
COVER
GASKETED
FLANGE
L. H. SIDE
PLATE
FILTERS
FIG. 3
- ECONOMIZER RAIN HOOD ASSEMBLY (OPTION)
Unitary Products Group 5
HOOD
COVER
FILLPIECE
OUTDOOR AIR
OPENING COVER
D
E
D
GASKETED
FLANGE
R. H.
SIDE
PLATE
C
A
B
SIDE DUCT
APPLICATION SHOWN
D
D
OUTDOOR AIR
SENSOR
GASKET
FIL TER SE CTION
ACCESS PANEL
Page 6
530.18-N7Y
DISCONNECT SWITCH BRACKET
FOR UNITS WITH OPTIONAL BELT-D RIVE B LOWER
A special bracket for mounting a field-supplied disconnect
switch is provided in each unit ordered with an optional
belt-drive supply air blower. The bracket is shipped inside the
blower compar t m en t ta pe d to the top of the blow e r ho us ing.
TYPICAL POWER WIRING
REFER TO THE APPROPRIATE
ELECTRICAL DATA TABLE TO
SIZE THE DISCONNECT SWITCH,
OVERCURRENT PROTECTION
AND WIRING.
TYPICAL CONTROL WIRING
COOLING ONLY (24 VOLT THERMOSTAT)
THERMOSTAT
TERMINALS
1
UNIT TERMINAL
STRIP TB1
24 VOLT
TRANSFORMER
Install the bracket on the le ft ha nd side of the u ni t as s hown 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 t he bracket. Sc rews should be lo osened 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.
COOLING / HEATING (24 VOLT THERMOSTAT )
THERMOSTAT
TERMINALS
ADD
JUMPER
1
UNIT TERMINAL
STRIP TB1
24 VOLT
TRANSFORMER
1
24 VOLT THERMOSTAT 2TH08701024. IF THE UNIT HAS AN ECONOMIZER,
REMOVE JUMPER J1 FROM TERMINALS 8 AND 10 ON THE RELAY BOARD
TO PREVENT SIMULTANEOUS OPERATION OF THE SCROLL COMPRESSOR
AND THE ECONOMIZER. IF YOU WANT TO CONTROL THE ECONOMIZER ON
A SECOND STAGE OF COOLING, USE THERMOSTAT 2TH04701224.
COOLING / HEATING (ELECTRONIC THERMOSTAT)
THERMOSTAT
TERMINALS
ADD
JUMPER
4
ADD
JUMPER
1
ELECTRONIC PROGRAMMABLE THERMOSTAT 2ET04700224 (INCLUDES SUBBASE)
TO CONTROL ECONOMIZER ON SECOND STAGE OF COOLING, REMOVE JUMPER
J1 FROM TERMINALS 8 AND 10 ON THE RELAY BOARD.
2
SECOND STAGE COOLING IS NOT REQUIRED ON UNITS LESS ECONOMIZER.
3
SECOND STAGE HEATING IS ONLY REQUI RED ON UNITS WITH A TWO STAGE
ELECTRIC HEATER.
4
REMOVE JUMPER J2 FROM TERMINALS 4 AND 9 ON JUMPER PLUG CONNECTOR
P6 ON UNITS WITH ECONOMIZER. TERMINALS A1 AND A2 PROVIDE A RELAY
OUT-PUT TO CLOSE THE OUTDOOR ECONOMIZER DAMPERS WHEN THE
THERMOSTA T SWITCHES TO THE SET-BACK POSITION.
FIG. 4
- TYPICAL FIELD WIRING
1
UNIT TERMINAL
2
3
NOT
USED
4
TO REMOTE SENSOR
2TH04702224 IF USED
STRIP TB1
24 VOLT
TRANSFORMER
1
24 VOLT THERMOSTAT 2TH07701024. IF THE UNIT HAS AN ECONOMIZER,
REMOVE JUMPER J1 FROM TERMINALS 8 AND 10 ON THE RELAY BOARD
TO PREVENT SIMULTANEOUS OPERATION O F THE SCROLL CO MPRESSOR
AND THE ECONOMIZER. IF YOU WANT TO CONTROL THE ECONOMIZER
ON A SECOND STAGE OF COOLING OR HA VE AN ELECTRIC HEAT
ACCESSORY WITH TWO STAGES OF HEAT, USE THERMOSTAT 2TH04701024
OR 2TH04701524 (WITH SUBBASE 2TB04700224 OR 2TB04700324).
COOLING / HEATING (ELECTRONIC THERMOSTAT)
THERMOSTAT
TERMINALS
ADD
JUMPER
1
ELECTRONIC PROGRAMMABLE THERMOSTAT 2ET07701024 (INCLUDES SUBBASE).
IF THIS UNIT HAS AN ECONOMIZER, REMOVE JUMPER J1 FROM TERMINALS 8 AND
10 ON THE RELAY BOARD TO PREVENT SIMUL TANEOUS OPERATION OF THE
SCROLL COMPRESSOR AND THE ECONOMIZER. IF YOU WANT TO CONTROL THE
ECONOMIZER ON A SECOND STAG E OF COOLING, USE THERMOSTAT 2ET04700224.
1
UNIT TERMINAL
STRIP TB1
24 VOLT
TRANSFORMER
6 Unitary Products Group
Page 7
(Direct-Drive Units)
FIELD-SUPPLIED
DISCONNECT SWITCH
LOCA TION
FILTER ACCESS
5
32
530.18-N7Y
BLOWER
ACCESS
CONTROL
BOX ACCESS
⁄
8
OUTDOOR
COIL
SCROLL
COMPRESSOR
ACCESS
FRONT VIEW
3
⁄
“ PVC FEMALE
4
COND. DRAIN
(See Detail ”A")
7
⁄
44
8
A, B
WIRING ENTRY
(See Detail “B”)
3
⁄
5
8
3
⁄
6
7
7
4
⁄
8
BOTTOM SUPPLY &
RETURN AIR OPENINGS
(SEE NOTE)
B - POWER WIRING ENTRY
A - CONTROL WIRING ENTRY
3
⁄
8
8
CLEARANCES
Front 24"
12" (Less Economizer)
Back
Left Side (Filter Access)
Right Side (Cond. Coil) 24"
Below Unit
Above Unit
NOTE:
Units and ductwork are appr ove d fo r zer o clea ra nce t o combu s tib le
mater-ials when equipped with electric heaters.
1
Units may be inst alled on combustible floors made from wood or
class A, B or C roof covering material. (Applicable in USA o nly).
2
Units must be installed oudo or s. Ove rhan gin g str uct ur es or shru bs
should not obstruct the outdoor coil nor the fan outlet.
1
2
36" (With Economizer
or Fixed Air/Motorized
Air Damper)
24" (Less Economizer)
36" (With Economizer)
20"
72" (For Condenser Air
Discharge)
ELECTRIC
1
⁄
82
4
HEA T
ACCESS
1
⁄
2
2
DUCT COVERS - Units are shipped with
1
⁄
11
2
all air duct
openings covered.
side duct applications;
1
⁄
17
2
1
⁄
6
2
1
⁄
17
2
1
⁄
8
8
UNIT BASE WITH RAILS
Shown separately to illustrate bottom
duct openings and power connection
locations.
NOTE: For curb-mounted units, refer to the
duct hanger dimensio ns of the curb for the
proper size of the supply and return air
duct connections.
1
6
⁄
17
2
REAR VIEW
SIDE SUPPLY AND RETURN
AIR OPENINGS
AIR FLOW LEGEND
RETURN AIR
For
1.Remove and discard the supply and
return air duct
covers.
2.Connect ductwork to duct flanges on the
rear of the
unit.
For
bottom duct applications;
1. Remove the side supply air duct cover to
All dimensions are in inches. They are subject to change without notice. Certified dimensions will be provided upon request.
1
⁄
11
2
UTILITIES ENTRY DATA
3
1
⁄
11
2
5
⁄
4
8
1
7
⁄
17
1
⁄
2
⁄
7
2
8
KNOCKOUT
HOLE
SIZE
(DIA.)
Control Wiring
A7/8" *
(Side or
Bottom)**
Power Wiring
B2" *
(Side or
Bottom)
Knockouts in the bottom of the unit can be located
*
by the slice in the insulation.
Do not remove the 2" knockout ring.
**
USED FOR
3
⁄
DRAIN
1
⁄
27
2
1
⁄
19
2
(must be trapped)
44
DETAIL “A”
UNIT WITH ECONOMIZER RAIN HOOD
FIG. 5
- DIMENSIONS & CLEARANCES - 3 - 6 TONS
Unitary Products Group 7
“ CONDENSATE
4
19
7
⁄
8
SUPPLY AI R
OUTDOOR AIR
3
⁄
4
OUTDOOR AIR
(Economizer)
DIMENSION "A"
FIXED
OUTDOOR
AIR DAMPER
MOTORIZED
DAMPER
12
16
7
⁄
30
8
1
⁄
10
4
1
⁄
19
8
"A"
DETAIL “B”
1
⁄
2
UNIT WITH FIXED OUTDOOR
AIR/MOTORIZED DAMPER RAIN HOOD
B
A
7
⁄
44
8
1
⁄
3
2
1
⁄
8
4
3
⁄
4
8
Page 8
530.18-N7Y
FIG. 6
- ENTHALPY SET POINT ADJUSTMENT
ELECTRIC HEATERS
The heaters are wired for a single point power supply. Power
supply need only be brought into the single point terminal block
Electric heaters are available as field-installed accessories.
Refer to Form 530.18-N7.1V for installation instruction. These
UL and CGA approved heaters are loca ted withi n the centra l
compartment o f the unit (see Figu re 5 for ac cess pane l) with
the heating elem e nt s ex te nd ing into the suppl y ai r ch am b er.
TABLE 3
- SUPPL Y AIR PERFORMANCE - 3 THRU 6 TON
GAS HEAT VALUES SHOWN @ 230/460/575 VOL TS
UNIT
SIZE
036
048
060
072 HI 2461 1480 2402 1440 2361 1395 2260 1350 2178 1305 2101 1260 2000 1205 1914 1155 1830 1110
NOTE: FOR 208 VOLTS, MULTIPLY VALUES BY 0.95.
INCLUDES ALLOWANCES FOR A WET EVAPORATOR COIL, 1" FIL T ERS AND GAS-FIRED HEAT EXCHANGERS. REFER TO THE STATIC RESISTANCES TABLE FOR RESISTANCE
*
VALUES ON APPLICATIONS OTHER THAN GAS / ELECTRIC UNITS WITH SIDE DUCT AIRFLOWS.
MOTOR
SPEED
HI
MED
LOW
HI
MED
LOW
HI
MED
LOW
0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00
CFM Watts CFM Watts CFM Watts CFM Watts CFM Watts CFM Watts CFM Watts CFM Watts CFM Watts
1699
1684
1487
1996
1804
1681
2400
2290
2150
800
710
960
838
760
1155
1105
1020
1631
1464
1933
1765
1640
2338
2214
2100
780
690
936
810
738
1125
1065
990
1582
1421
1868
1714
1604
2274
2145
2029
Available External Static Pressure - IWG*
1650
825
1524
750
1367
670
1795
910
1650
785
1541
715
2167
1095
2071
1030
1965
950
and thermostat wiring to the low voltage terminal strip located
in the upper portion of the unit control box.
Fuses are s u pplied, where required, by the factory. Some KW
sizes require fuses and others do not. Refer to the accessory
instruction for electrical data.
w/Direct-Drive Blower
- Side Duct Connections
680
1280
700
1360
725
1430
755
1570
785
720
650
880
765
695
1045
990
910
1410
1315
1722
1589
1490
2096
1990
1905
690
620
845
735
670
1010
950
880
1324
1246
1635
1508
1416
1990
1911
1816
650
605
820
705
645
980
920
838
1260
1185
1544
1407
1337
1887
1828
1724
630
590
790
675
620
945
885
800
1185
1110
1419
1306
1230
1771
1724
1644
610
570
765
645
595
905
835
770
1180
1100
1020
1300
1195
1120
1629
1604
1531
655
590
545
740
625
575
855
798
710
8 Unitary Products Group
Page 9
530.18-N7Y
TABLE 4
3 TON GAS HEAT VALUES SHOWN @ 230/460/575 VOLTS
NOTE: FOR 208 VOLTS, MULTIPLY VALUES BY 0.95.
INCLUDES ALLOWANCES FOR A WET EVAPORATOR COIL, 1" FILTERS, AND THE HEAT EXCHANGERS. REFER TO THE ST ATIC RESISTANCES TABLE FOR RESISTANCE VALUES
*
ON APPLICATIONS OTHER THAN GAS / ELECTRIC UNITS WITH SIDE DUCT AIRFLOWS.
- SUPPLY AIR PERFORMANCE - 3 & 4 TON
UNIT
SIZE
UNIT
SIZE
036
036
AIR FLOW
CFM
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
AIR FLOW
CFM
2000 1 103 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 - - - - - -
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
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
w/Belt-Drive Blower
- Side Duct Connections
Available External Static Pressure - IWG*
Available External Static Pressure - IWG*
4 TON GAS HEAT VALUES SHOWN @ 230/460/575 VOLTS
UNIT
SIZE
UNIT
SIZE
NOTE: FOR 208 VOLTS, MULTIPLY VALUES BY 0.95.
INCLUDES ALLOWANCES FOR A WET EVAPORATOR COIL, 1" FIL T ERS AND GAS-FIRED HEAT EXCHANGERS. REFER TO THE STATIC RESISTANCES TABLE FOR RESISTANCE
*
VALUES ON APPLICATIONS OTHER THAN GAS / ELECTRIC UNITS WITH SIDE DUCT AIRFLOWS.
048
048
AIR FLOW
CFM
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 1 125 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
AIR FLOW
CFM
2000 1 103 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 - - - - - -
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
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
Available External Static Pressure - IWG*
Available External Static Pressure - IWG*
- Side Duct Connections
Unitary Products Group 9
Page 10
530.18-N7Y
TABLE 5
5 TON GAS HEAT VALUES SHOWN @ 230/460/575 VOLTS
UNIT
SIZE
UNIT
SIZE
NOTE: FOR 208 VOLTS, MULTIPLY VALUES BY 0.95.
INCLUDES ALLOWANCES FOR A WET EVAPORATOR COIL, 1" FIL T ERS AND GAS-FIRED HEAT EXCHANGERS. REFER TO THE STATIC RESISTANCES TABLE FOR RESISTANCE
*
VALUES ON APPLICATIONS OTHER THAN GAS / ELECTRIC UNITS WITH SIDE DUCT AIRFLOWS.
- SUPPLY AIR PERFORMANCE - 5 & 6 TON
060
060
AIR FLOW
CFM
2500 1059 1560 1077 1590 1095 1630 1114 1650 1 134 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
AIR FLOW
CFM
2500 - - - - - - - - - - - - - -
2400 1 193 1665 - - - - - - - - - - - 2300 1 170 1580 1202 1620 - - - - - - - - - 2200 1 148 1480 1180 1530 - - - - - - - - - 2100 1 121 1385 1155 1425 1190 1475 - - - - - - - 2000 1 100 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 1 196 1295 - - - 1700 1035 960 1071 1030 1103 1100 1 134 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 1 158 1075 1184 1110
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
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
w/Belt-Drive Blower
- Side Duct Connections
Available External Static Pressure - IWG*
Available External Static Pressure - IWG*
6 TON GAS HEAT VALUES SHOWN @ 230/460/575 VOLTS
UNIT
SIZE
UNIT
SIZE
NOTE: FOR 208 VOLTS, MUL TIPLY VALUES BY 0.95.
INCLUDES ALLOWANCES FOR A WET EVAPORATOR COIL, 1" FIL TERS AND GAS-FIRED HEAT EXCHANGERS. REFER TO THE STA TIC RESISTANCES TABLE FOR RESISTANCE
*
VALUES ON APPLICATIONS OTHER THAN GAS / ELECTRIC UNITS WITH SIDE DUCT AIRFLOWS.
072
072
AIR FLOW
CFM
3200 1 150 2325 1182 2425 1212 2525 - - - - - - - -
3000 1 100 2010 1129 2090 1157 2150 1185 2225 1215 2290 1242 2360 - 2800 1045 1700 1074 1780 1102 1850 1131 1940 1 160 2025 1190 2075 1217 2130
2600 985 1425 1015 1475 1045 1540 1075 1630 1 103 1715 1135 1760 1163 1825
2400 930 1240 958 1300 990 1350 1020 1400 1051 1430 1081 1490 1111 1600
2200 - - 905 1070 933 1 160 965 1210 997 1250 1028 1285 1060 1325
2000 - - - - - - 919 1025 950 1100 982 1130 1014 1160
1800 - - - - - - - - 909 925 939 1005 968 1030
AIR FLOW
CFM
3200 - - - - - - - - - - - - - 3000 - - - - - - - - - - - - - 2800 1245 2190 - - - - - - - - - - - 2600 1193 1920 1222 1990 1250 2060 - - - - - - - 2400 1142 1675 1173 1730 1205 1800 1234 1885 - - - - - 2200 1090 1380 1124 1450 1155 1550 1186 1640 1217 1710 1249 1775 - 2000 1045 1175 1077 1200 1109 1275 1140 1360 1170 1460 1205 1545 1235 1600
1800 998 1050 1028 1060 1058 1060 1087 1075 1118 1150 1148 1250 1176 1360
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
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
Available External Static Pressure - IWG*
Available External Static Pressure - IWG*
- Side Duct Connections
10 Unitary Products Group
Page 11
530.18-N7Y
TABLE 6
- STATIC RESISTANCES
EXTERNAL STATIC PRESSURE DROP
RESISTANCE, IWG
DESCRIPTION
Economizer
Electric Heaters
Bottom Duct Connections
Cooling Only
1
Deduct these resistance values from the available external static pressure shown in the respective Blower Performance Table.
2
Add these resistance values to the available static resistance in the respective Blower Performance T able.
3
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
during full economizer oper ation.
1, 3
1
2
5 - 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
1
1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000
0.07 0.08 0.09 0.11 0.13 0.15 0.17 0.20 0.23 0.26 0.30
0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.14 0.16 0.19 0.22
0.08 0.10 0.12 0.14 0.16 0.18 0.20 0.23 0.26 0.29 0.32
CFM
TABLE 7
- MOTOR AND DRIVE DA TA - Belt-Drive Blower
UNIT
SIZE
BLOWER
RANGE
(RPM)
HP RPM
MOTOR*
FRAME
SIZE
SERVICE
FACTOR
ADJUSTABLE
MOTOR PULLEY
PITCH
DIA.
(in.)
BORE
(in.)
FIXED
BLOWER PUL L EY
PITCH
DIA.
(in.)
BORE
(in.)
BELT
PITCH
LENGTH
(in.)
DCE036 780 - 1090 1-1/2 1725 56 1.15 2.4 - 3.4 7/8 5.7 1 37. 3 A36
DCE048 790 - 1120 1-1/2 1725 56 1.15 2.4 - 3.4 7/8 5.7 1 37. 3 A36
DCE060 850 - 1220 1-1/2 1725 56 1.15 2.4 - 3.4 7/8 5.2 1 37. 3 A36
DCE072 900 - 1250 1-1/2 1725 56 1.15 2.8 - 3.8 7/8 5.2 1 37. 3 A36
All motors hav e 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
*
TABLE 8
NOTES: 1. Utilization Range “A” in accordan ce with ARI Standa rd 110. 2. Dual element, time delay type.
- ELECTRICAL DATA (BASIC UNIT)
VOLTAGE
UNIT
SIZE
036
048
060
072
POWER
SUPPLY
208/230-1-60
208/230-3-60
460-3-60
575-3-60
208/230-1-60
208/230-3-60
460-3-60
575-3-60
208/230-1-60
208/230-3-60
460-3-60
575-3-60
208/230-3-60
460-3-60
575-3-60
LIMITATIONS
(SEE NOTE 1)
MIN. MAX. RLA LRA
187
187
414
518
187
187
414
518
187
187
414
518
187
414
518
253
253
504
630
253
253
504
630
253
253
504
630
253
504
630
w/Direct-Drive Blower Motor
SCROLL
COMPRESSOR
18.0
11.4
6.2
5.0
24.4
14.1
7.1
5.6
28.9
16.0
8.0
6.4
20.3
10.2
8.2
105.0
90.0
45.0
36.0
140.0
105.0
55.0
44.0
165.0
125.0
67.0
50.0
146.0
73.0
58.4
COND.
FAN
MOTOR,
FLA
1.3
1.3
0.8
0.8
1.3
1.3
0.8
0.8
1.3
1.3
0.8
0.8
1.3
0.8
0.8
SUPPLY
AIR
BLOWER
MOTOR,
FLA
4.4
4.4
2.2
2.2
5.0
5.0
2.2
2.2
6.6
6.6
3.3
3.3
6.8
3.6
3.6
MINIMUM
CIRCUIT
AMPACITY
28.2
20.0
10.8
9.3
36.8
23.9
11.9
10.1
44.0
27.9
14.1
12.1
33.5
17.2
14.7
MAX.
FUSE
SIZE,
(SEE NOTE 2)
AMPS
45
30
15
15
60
35
15
15
70
40
20
15
50
25
20
BREAKER
DESIG-
NAT ION
MAX.
HACR
SIZE,
AMPS
45
30
15
-
60
35
15
-
70
40
20
-
50
25
-
TABLE 9
- ELECTRICAL DATA (BASIC UNIT)
VOLTAGE
UNIT
SIZE
POWER
SUPPLY
LIMITATIONS
(SEE NOTE 1)
MIN. MAX. RLA LRA
208/230-1-60
036
208/230-3-60
460-3-60
575-3-60
208/230-1-60
048
208/230-3-60
460-3-60
575-3-60
208/230-1-60
060
208/230-3-60
460-3-60
575-3-60
208/230-3-60
072
460-3-60
575-3-60
NOTES: 1. Utilization Range “A” in accordan ce with ARI Standa rd 110. 2. Dual element, time delay type.
187
187
414
518
187
187
414
518
187
187
414
518
187
414
518
Unitary Products Group 11
253
253
504
630
253
253
504
630
253
253
504
630
253
504
630
w/Belt-Drive Blower Motor
SCROLL
COMPRESSOR
18.0
11.4
6.2
5.0
24.4
14.1
7.1
5.6
28.9
16.0
8.0
6.4
20.3
10.2
8.2
105.0
90.0
45.0
36.0
140.0
105.0
55.0
44.0
165.0
125.0
67.0
50.0
146.0
73.0
58.4
MOTOR,
COND.
FAN
FLA
1.3
1.3
0.8
0.8
1.3
1.3
0.8
0.8
1.3
1.3
0.8
0.8
1.3
0.8
0.8
SUPPLY
AIR
BLOWER
MOTOR,
FLA
5.3
5.3
3.1
3.1
8.6
5.2
2.6
2.0
8.6
6.0
3.0
2.4
7.3
3.7
2.8
MINIMUM
CIRCUIT
AMPACITY
29.1
20.9
11.7
10.2
40.4
24.1
12.3
9.9
46.0
27.3
13.8
11.2
34.0
17.3
13.9
MAX.
FUSE
SIZE,
(SEE NOTE 2)
AMPS
45
30
15
15
60
35
15
15
70
40
20
15
50
25
20
MAX.
HACR
BREAKER
SIZE,
AMPS
45
35
15
-
60
35
15
-
70
40
20
-
50
25
-
Page 12
530.18-N7Y
TABLE 10
TEMPERATURE,
TABLE 11
TEMPERATURE,
- SUPERHEAT CHARGING TABLE FOR MODEL 036
OUTDOOR
°
F
65 25.6 26.8 28 29.2 30.4 31.6 32.8 33.3 33.9 34.4 34.9
70 20.1 21.7 23.3 24.9 26.5 28.1 29.6 30.6 31.5 32.4 33.4
75 14.6 16.6 18.5 20.5 22.5 24.5 26.5 27.8 29.1 30.5 31.8
80 9.0 11.4 13.8 16.2 18.5 20.9 23.3 25.0 26.8 28.5 30.3
85 - 6.3 9.0 11.8 14.6 17.4 20.1 22.3 24.4 26.6 28.7
90 - - 6.7 9.1 11.4 13.8 16.2 18.9 21.7 24.4 27.1
95 - - - 6.3 8.3 10.3 12.3 15.6 18.9 22.2 25.6
100 - - - 5.3 6.8 8.4 10.0 13.4 16.8 20.2 23.6
105 ----5.46.57.711.214.718.221.7
110 ------5.49.012.616.219.8
115 -------6.810.514.117.8
55 57 59 61 63 65 67 69 71 73 75
SUPERHEAT AT SCROLL COMPRESSOR SUCTION, °F, AIRFLOW = 400 CFM/TON
INDOOR WB TEMPERATURE, °F
- SUPERHEAT CHARGING TABLE FOR MODEL 048
OUTDOOR
°
F
65 18.1 20.1 22.2 24.3 26.3 28.4 30.5 31.7 32.9 34.2 35.4
70 14.5 16.6 18.7 20.8 22.9 25 27.1 28.7 30.2 31.8 33.4
75 11.0 13.1 15.2 17.4 19.5 21.6 23.7 25.6 27.5 29.5 31.4
80 7.5 9.6 11.7 13.9 16.0 18.2 20.3 22.6 24.8 27.1 29.3
85 - 6.1 8.3 10.4 12.6 14.8 16.9 19.5 22.1 24.7 27.3
90 - - 6.6 8.2 9.8 11.4 13.0 16.1 19.1 22.2 25.2
95 - - - 5.9 7.0 8.0 9.1 12.6 16.1 19.6 23.1
100 - - - 5.3 6.2 7.0 7.9 11.1 14.2 17.4 20.5
105 ----5.46.06.79.512.315.218.0
110 -----5.05.58.010.513.015.4
115 -------6.48.610.712.9
55 57 59 61 63 65 67 69 71 73 75
SUPERHEAT AT SCROLL COMPRESSOR SUCTION, °F, AIRFLOW = 400 CFM/TON
INDOOR WB TEMPERATURE, °F
TABLE 12
TEMPERATURE,
12 Unitary Products Group
- SUPERHEAT CHARGING TABLE FOR MODEL 060
OUTDOOR
°
F
65 20.1 22.0 24.0 25.9 27.8 29.8 31.7 32.5 33.3 34.1 35.0
70 16.9 18.9 21.0 23.1 25.2 27.2 29.3 30.3 31.3 32.3 33.4
75 13.7 15.9 18.1 20.3 22.5 24.7 26.9 28.1 29.3 30.5 31.8
80 10.4 12.8 15.1 17.4 19.8 22.1 24.5 25.9 27.3 28.7 30.2
85 7.2 9.7 12.2 14.6 17.1 19.6 22.0 23.7 25.3 27.0 28.6
90 - 6.6 8.9 11.3 13.6 16.0 18.3 20.6 22.8 25.0 27.3
95 - - 5.7 7.9 10.1 12.4 14.6 17.4 20.3 23.1 25.9
100 - - - 6.5 8.2 9.9 11.6 14.6 17.6 20.6 23.6
105 - - - 5.1 6.3 7.4 8.6 11.8 15.0 18.1 21.3
110 ------5.69.012.315.719.0
115 -------6.19.713.216.7
55 57 59 61 63 65 67 69 71 73 75
SUPERHEAT AT SCROLL COMPRESSOR SUCTION, °F, AIRFLOW = 400 CFM/TON
INDOOR WB TEMPERATURE, °F
Page 13
530.18-N7Y
TABLE 13
OUTDOOR
TEMPERATURE,
- SUPERHEAT CHARGING TABLE FOR MODEL 072
SUPERHEAT AT SCROLL COMPRESSOR SUCTION, °F, AIRFLOW = 400 CFM/TON
°
F
65 15.2 18.0 20.9 23.7 26.5 29.3 32.1 33.4 34.7 36.0 37.3
70 11.9 14.9 17.8 20.8 23.7 26.7 29.6 31.0 32.4 33.8 35.3
75 8.6 11.7 14.8 17.9 21.0 24.1 27.2 28.7 30.2 31.7 33.2
80 5.2 8.5 11.7 15.0 18.2 21.4 24.7 26.3 27.9 29.6 31.2
85 - 5.3 8.7 12.0 15.4 18.8 22.2 23.9 25.7 27.4 29.2
90 - 5.1 7.7 10.4 13.0 15.7 18.4 20.7 23.1 25.4 27.8
95 - - 6.8 8.7 10.6 12.6 14.5 17.5 20.4 23.4 26.3
100 - - 6.2 7.7 9.2 10.7 12.3 15.4 18.5 21.7 24.8
105 - - 5.6 6.7 7.8 8.9 10.0 13.4 16.7 20.0 23.3
110 - - - 5.6 6.4 7.1 7.8 1 1.3 14.8 18.3 21.8
115 -----5.25.59.212.916.620.4
55 57 59 61 63 65 67 69 71 73 75
INDOOR WB TEMPERATURE, °F
Unitary Products Group 13
Page 14
530.18-N7Y
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 scroll c ompressor is hermeti cally sealed
and internally sprung.
The scroll compressor s have inh erent (interna l) protectio n. If
there is an a bnormal temper ature rise in the scro ll comp ressor ,
the protector w il l op en to sh ut down the scroll co m pressor.
COOLING SEQUENCE OF OPERATION
Single-Stage Cooling:
When the thermostat calls for “cooling”, “R” is closed to “G” and
“Y1" (wiring schematic) which completes the low voltage
control circuit, immediately energizing the scroll 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 provided by the economizer
if the outdoor air enthalpy is acceptable, and second-stage
cooling is provided by the scroll 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 f or a s hort ti me. All ot her com ponen ts will sto p.
SAFETY CONTROLS
The refriger ant system is equipp ed with the following safety
controls:
1. A Suction Line Freezestat to protect against low evaporator
temperatures due to a low air flow or a low return air
temperature.
2. A High Pressure C utout Switch to p rotect against e xcessive
discharge pr essu res due to a bloc ked co nden ser coil or a
condenser motor failure.
3. A Low Pressure 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 singl e- st age or two-stag e he ating thermos ta t.
WITH POWER TO UNIT AND THERMOSTAT IN THE
HEA T ING MODE
Single-Stage Heating:
a. If the fan switch is in the “ON” position, the evaporator
blower motor relay (BR) will be energized through terminal
G to provide continuous blower operation. If the fan switch
is in the “AUTO” position, th e blower will op erate only wh en
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 always
the first and last to complete its timing cycle and controls
power to the evaporator blower motor.
c. The thermostat will cycle the electric heat to satisfy the
heating requirements of the conditioned space.
Two-Stage Heating:
a. If the fan switch is in the “ON” position, the evaporator
blower motor relay (BR) will be energized through terminal
G to provide continuous blower operation. If the fan switch
is in the “AUTO” position, th e blower will op erate only wh en
there is a call for heating by the thermostat.
b. Upon a call for f irst-s tage he at by th e thermost at, the first
stage of heat will be energized.
If the thermostat calls for the second stage of heat, the
second stage of heat will be energized.
As before, sequencer 1S (or contactor 2M) maintains
control of the evaporator blower.
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 closin g the R to G circuit on th e th ermostat.
HEA T ANT ICIPA TOR SETPOINTS
It is importa nt that the antic ip at or setpoint be co rrect. Too high
of a setting will result in longer heat cycles and a greater
temperature swing in the conditioned space. Reducing the
value belo w the correc t setpoint will give sh orter “ON” cycles
and may resu lt in the lowering of the temperature wi thin the
conditioned space. Refer to Table 10 for the required heat
anticipator se tt in g.
TABLE 14
NOMINAL
HEATER
- HEA T ANTICIPATOR SETTING
SIZE
KW
5
7
10
15
20
30
5
7
10
15
20
30
7
10
15
20
30
10
15
20
30
VOLTAGE
240-1-60
240-3-60
480-3-60
600-3-60
SETTING, AMPS
TH1 TH2
0.16
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.37
0.37
0.35
0.35
0.37
0.37
-
-
-
0.19
0.38
0.38
-
-
-
0.19
0.38
0.38
-
-
-
0.29
0.29
-
-
0.29
0.29
CHECKING SUPPLY AIR CFM
The speed of the supply air blower will depend on the required
CFM, the unit ac cessories and the static resi stances of both
the supply and the return air duct systems. With this
information, the speed for the supply air blower can be
determined fr om the st atic re sistan ce and b lower perfor mance
data on Tables 3 thru 6.
Knowing the required blower RPM and the blower motor HP,
the speed setting for the direct-drive supply air motor can be
determined.
14 Unitary Products Group
Page 15
The setting (turns open) for the option al belt-drive supply air
motor pulley ca n be det ermined from Table 1 5.
530.18-N7Y
T o check the supply air CFM after the initial balancing has been
completed:
TABLE 15
- BELT-DR IVE S U PP LY AIR
MOTOR PULLEY ADJUSTMENT
TURNS
OPEN*
5
4
3
2
1
0
Pulley can be adjusted in half-turn increments.
*
OPTIONAL BELT-DRIVE BLOWER
All units with belt-drive blowers have single-speed motors. The
variable pi tch pulley on the blower motor can be adjusted t o
obtain the desired supply air CFM. Refer to Table 7 for blower
motor and drive data. The tension on the belts should be
adjusted as shown in Figure 7.
Procedure for adjusting belt tension:
1. Loosen nut (D) from the motor mount.
2. Never loosen nuts (C) from each other while loosening nut (D).
3. Adjust the tension by turning bolt (B).
4. Do not loosen the four nuts (top and bottom) (A); unless additional tensioning
distance is required; immediately re-tighten these bolts if loosened.
5. Use a belt tension checker to apply a perpendicular force to one belt at the
midpoint of the span as shown. The deflection force should be applied
until a specific deflection distance of 4mm (5/32")is obtained. To determine
the deflection distance from normal position, use a straight edge from
sheave to sheave as a reference line. The recommended deflection force
is as follows:
BLOWER DRIVE RANGE (RPM)
3 TON 4 TON 5 TON 6 TON
780
842
904
966
1028
1090
CAUTION
790
856
922
988
1054
1120
SPAN LENGTH
DEFL FORCE
850
924
998
1072
1246
1220
900
970
1040
1110
1180
1250
1.
Remove the (two)
5
⁄
" dot plugs from the holes located on
16
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 p enetration into th e air fl ow on bo th sides o f
the evaporator coil.
NOTE: The tubes must be inserted and held in a position
perpendicular to the air flow so that velocity pressure will not affect the static pressure readi ngs.
3. Using an inclined manometer, determine the pr essure drop
across a dry indo or coil. Since th e moisture on an indoo r
coil may vary greatly, measuring the pressure drop across
a wet coil under field conditions would be inaccurate. To
assure a dry coil, the scroll 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 un it can be de te rm i ne d f ro m th e c ur ve in
Figure 8.
0.7
0.6
0.5
0.4
0.3
0.2
PRESSURE DROP (IWG)
0.1
036
048
072
060
(B)
(A)
Tension new belts at the max. deflection force recommended for the belt
section. Check the belt tension at least two times during the first 24 hours of
operation. Any re-tensioning should fall between the min. and max.
deflection force values.
6. After adjusting, re-tighten nut (D) against the motor mount taking care not
to loosen nuts (C).
(C)*
* NEVER LOOSEN
(D)
0
750 1250 1750 2250 2750 3250 3750
NOMINAL CFM
FIG. 8
- PRESSURE DROP ACROSS A DRY
EV APORATOR COIL VS SUPPLY AIR CFM,
WITHOUT AIR FILTERS
WARNING:Failure to properly adjust the total system air quan-
FIG. 7
- BEL T ADJUSTMENT
Start the supply air blower motor. Adjust the resistances in both
the supply and th e return air duct sy stems to balanc e the air
distribution throughout the conditioned space. The job
specifications may require that this balancing be done by
someone other than the equipment installer.
SECURE OWNER’S APPROV AL
:
When the system is functioning properly , secure the owner’s approval. Show him the
5. After readings have been obtained, remove the tubes and
seal the holes w ith the
NOTE: DE-ENERGIZE THE SCROLL COMPRESSORS BE-
tity can result i n poor system performance.
5
⁄
" dot plugs removed in Ste p 1.
16
FORE TAKING ANY TEST MEASUREMENTS TO
ASSURE A DR Y INDOOR COIL.
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.
Unitary Products Group 15
Page 16
MAINTENANCE
NORMAL MAINTENANCE
CAUTION: Prior to any of the following ma intenance proce-
dures, shut off al l power to the unit to prevent
personal injury.
FIL TERS - Insp ect once a mo nth. Replac e disposabl e or clean
permanent type as necessary. DO NOT replace permanent
type with disposable.
MOTORS - Indoor fan and outdoor fan motors are permanently
lubricated an d require no maintenance.
OUTDOOR COIL - Dirt should not be allow ed to accumulate
on the outdoor coil surface or other parts in the air circuit.
Cleaning sho uld be as o ften as nece ssar y to kee p coi l cle an.
Use a brush, vacuum cleaner attachme nt, or other suitable
means. If wate r is used to cl ea n co il, be sure po w er to the unit
is shut off pri or to cleaning.
NOTE: Exercise c are when cl eaning the coil so that th e coil
fins are not damag ed.
Do not permit the outdoor air discharge to be obstructed by
overhanging st ru ctures of shrubs .
208/230-1-60 VOLT
MODELS ONLY
Unitary Products Group
P.O. Box 1592, York, P en nsylva nia USA 17 40 5-15 92
Subject to change without notice. Printed in U.S.A.
Copyright by York International Corporation 1997. All Rights Reserved.
208/230, 460 VOLT
MODELS ONLY
208/230, 575 VOLT
MODELS ONLY
530.18-N7Y
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