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YC *075 -SF -5A
SER VICE Library Service Lkerature
Product Section Unitary
Product Rooftop Air Conditioner
Model YC#
�-' Literature Type Service Facts
Sequence 5A
Customer Property — Contains wiring and Date January 1996
service information. Please retain. File No. SV UN- RTYC#075 SF -SA 1/96
Supersedes New
Models:
YCDO75C3LOBE, C3LABE ,C3LBBE,C3LCBE,C3LFBE,C3LGBE Packaged Cooling/Gas Heat
YCH075C3L3BE.C3LBBE,C3LFBE WA Tons- Downflow & Horizontal
YCDO75C3HOBE, C3HABE ,C3HBBE,CEHCBE,C3HFBE.C3HGBE
YCH075C3HOBE.C3HRBE,C3HFBE Mirco- Electronic Controls
IMPORTANT NOTE: This unit is Table 2 - Product Specifications
equipped with advanced electronic RATED VOLTS / PHASE 1 HZ 208.23013 / 60 Outdoor Fan • Type Propeller
A.R.I. Ridings CFM 4870
controls which provide convenient Cooling (1) No. Used /Dia. 1 1 24
service functions significantly differ-
Indoor Capacity (BTUH) 72.000 Npe s: No. Speeds Direct/ I
nddoor r Air ir Flow (CFM) 2500 CFM No . Motors , HP 1 7 0.50
ent from conventional units. Refer to System Power (KW) 8.0 Motor Speed R.P.M 1075
EER (BTU per Watt) (2) 9.0 Volts / Ph I Hz 208 -230 / 1 1 60
your service literature carefully when Heating (3) F.I Amp" Lk /imps 3.4 /10.8
performing service or maintenance. Input BTUH (Low Heal) 120,000 INDOOR FAN — Type FC Centrifugal
Output BTUH (Low Heal) 97,000 No. Used / Dia. a Width (In.) 1 r 12.6 x 9.5
1st Stage Input BTUH (High Heat) 150.000 Drive / Speeds (No.) Bert / I
Output BTUH (High Heat) 122,000 No. Motors / HP
2nd Stage Input STUN (7) 205,000 Standard Motor 1 / 1.0
Output BTUH 166.000 Oversize Motor 1 r 2.0
Table 1 - Contents Temp. Rise - Min. F (L /H) 25 / 35 Motor Speed R.P.M. 1725
Temp, Rise - Mat. F (LM) 55 /65 Volts / Ph / Hz 208 -230 /3 / 60
Page Type of Gas (d` Natural F.L. Amps / L.R. Amps
r °!!° 'POWER CONKS — / PH 1142 208.230 / 3 160 Standard Motor 5.9 / 32.2
Contents 1 Min. Circuit Ampacily 16) Oversize Motor 8.8 / 53.0
Table 2 - Product Specifications 1 Standard/Oversize Motor 36.6 /39.5 COMBUSTION FAN - Type Centrifugal
....–' Table 3 - Optional Equipment 2 Fuse Size - Mao. (Amps) 50 / 60 No used t
COMPRESSOR Drive / No. of Speeds (1.41) Direct I/2
Sequence of Operation 2 No. Used t Motor HP / RPM (Low) 1,20 / 3350
Unit Start -Up 2 Volts /Ph/HZ 200230 /3 1 60 (High) 1/20.3000.3500
Cooling Operation /Mechanical R.L. Amps 21.8 Vohs Ph , Hz 208 -230 / 1 / 60
compressor Cycle 2 L.R. Amps 124.0 F.L. Amps / L.R. Amps 0.4 / 1.4
OUTDOOR COIL — TYPE H,-Pedormance FILTER Furnished
Cooling Operation Rows r F P I. 2/16 Type Throwaway
Economizer Cycle .. 2 Face Area (Sq. Ft.) 11.32 Filters Size 16 x 25 x I
Continuous Fan Operation 3 Tube Size (In.) 0.375 Quantify 3
INDOOR COIL —Typ• Hi Perlormencs REFRIGERANT
Heating Operation /Gas Heat ....... .. 3 Rows / F.P.1. 3/15 Char a Lbs. of R-221(51 9.1
Ignition Control Module 3 Face Area (Sq. FLI 7.88 GAS PIPE SIZE (In.) 1.2
Operating Pressure Curve 5 Tube SNIP (In.) 0.375 ' DIMENSIONS H x W x L
Refrigerant Control Short Orifice Crated lin.` 39 x 55x90
Superheat Charging Chart 5 Drain Conn Sue (In.) 314' NPT WEIGHT (Approx. Lbs)
Connection Diagram (Low Heat) 6 Shipping / Net 938 / 750
Connection Diagram (High Heat) ,.,.8 F eoinete.
Power Schematic t0 1 Cooling P•formance is rated at 95 F ambient. 80 F entering dry bulb. 67 F entering wet bub and
nominal crm listed ARI capacity is net and includes the affect of tan motor neat Rated in accordance
Control Schematic (Low Heat) 12 with ARI Standard 210
Control Schematic (High Heat) 14 2 Rated at API conditions and in accordance with DOE test procedures
Refrigerant Circuit Diagram 16 3 Heating performance lime senngs and rating data ware established and approved under laboratory
test conditions using American National Standards (WOOD standards Ratings shown are for •Mvatlons
up to 2000 heel
4 CoaverabN to LP pas with orifice change
S. Refrigerant charge shown is • nominal value; for • more precise value see the unit nameplate.
6. Values do not Include power exhaust accessory.
7. Applies to High Heat models only.
411 WARNING: HAZARDOUS VOLEAGE-DISCONNEC I POWER BEFORE SERVICING
Failure to DISCONNECT SAFETY NOTICE RE- CONNECT
POWER before servicing This information is intended for use by individuals ALL GROUNDING DEVICES
possessing adequate backgrounds of electrical and
could lead to severe personal mechanical experience. Any attempt to repair a central air All pails this g d of n
conditioning product may result in personal irpury and/or prop electrical cuu rrent erre e groou undeedad If f of wires.
injury or death. erly damage. The manufacturer of seller cannot be respon- screws, straps. clips. nuts or washers used to
complete a path to ground are removed for
sible for the interpretation of this information, nor can it as- service. they must be returned to their original
some any liability in connection with its use. position and properly fastened
Maim Since the manufacturer has a policy of cOntnlautl product fmptovement,
8 reserves the nom to change specification and design wthout notice. Page 0-921.641
T
Model Number YSC072F3EHA * *C000000001A0000000000000000
Customer : ADVANCED HEATING
Project : YHC075 REPLACEMENT
Name : Y4C 1
3 -10 Ton R410A PKGD Unitary Gas /Electric Rooftop
General
Unit function DX cooling, gas heat Unit efficiency Standard efficiency
Airflow Convertible configuration Airflow Application Downflow
Fresh air selection Econ -dry bulb 0 -100% 3hp Tonnage 6 Ton
Cooling Entering DB 80.00F Cooling Entering WB 67.00F
Ambient Temp 95.00F Heating capacity High gas heat 3ph
Voltage 208 - 230/60/3 Major design sequence F - R -410A With Microchannel
DX Cooling, Gas Heat 3 -10 Ton
Unit controls Electro mechanical controls 3 Refrigeration controls Frostat 3ph
ph
Smoke detector Return air smoke detector
3ph
Page 1
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1
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3/4"-14 DIA HOLE
CONDENSATE DRAIN
27 5M" 4314"
ISOMETRIC - PACKAGED COOLING
Page 3
* 0 Mar
$
" / — TOP PANEL
EVAPORATOR
SECTION ACCESS PANEL
CONDENSER FAN
CONDENSATE DRAIN (ALT) 11 1 11
314 " -14 NPT DIA. HOLE `t t�`���ll
`�� z COIL
41!'4\ 4 ,\ 111%11.. 11111111
\ 0 /
' ° 4/ NIT CONTROL WIRE 7/8" DIA. HOLE
47 7/8" e 0
/ � SERVICE GAUGE PORT ACCESS 1 3/8" DIA. HOLE
0 NIT POWER WIRE
112" NPT GAS CONNECTION ONTROL AND COMPRESSOR ACCESS PANEL
(80MBH & 120MBH)
3/4" NPT GAS CONNECTION
(150MBH, 200MBH & 250MBH)
THROUGH THE BASE 27 58"
CONDENSATE
NOTES:
4 1/8" 1. THRU -THE -BASE ELECTRICAL AND GAS IS NOT STANDARD ON
P ALL UNITS.
2. VERIFY WEIGHT, CONNECTION. AND ALL DIMENSION WITH
INSTALLER DOCUMENTS BEFORE INSTALLATION
T- - -F - -1 r- - -r - -1
f# 1I\\
``> leg
, ���
�' 33" 3218"
`—� SUPPLY RETURN
1-- ' - -1 -- 4
-
— 17 1/2' 878• 171/2• 358"
PLAN VIEW UNIT
DIMENSION DRAWING
f - - - A
RETURN 32 114" 4078' e
4 HORIZONTAL
SUPPLY 2378• I
1 AIR FLOW
1812'4 I 0
1 Y o
- /, -- 9819 558" -
.. -' _ .. m a 4 I �Q u
18 114" 93/8• - 18 3/4• 3 78" 4 1 /4"
CONDENSATE 558 "mss
7 58" 1
88 58" 631/4'
PACKAGED GAS / ELECTRICAL
DIMENSION DRAWING
Page 2
. J
'ELECTRICAL / GENERAL DATA
GENERAL ' 2h4ac) HEATING PERFORMANCE
Model: YSC072F Oversized Motor HEATING - GENERAL DATA
Unit Operating Voltage: 187 -253 MCA: N/A Model: High
Unit Primary Voltage: 208 MFS: N/A Heating Heating M odt (Btu': High 0 /105,000
Unit Secondary Voltage 230 MCB: N/A
Unit Hertz: 60 Heating Output iBtu): 120,000/84.000
Unit Phase: 3 No Burners: 3
No. Stages 2
EER 11.2
Standard Motor Field Installed Oversized Motor Gas Inlet Pressure
MCA: 36.5 MCA: N/A Natural Gas (Min /Mix): 4.5/14
MFS: 50.0 MFS: N/A LP (Min/Max) 11.0/14.0
MCB: 50.0 MCB: N/A Gas Pipe Connection Size: 3/4"
INDOOR MOTOR
Sandard Motor Oversized Motor Field Installed Oversized Motor
Number: 1 Number N/A Number: N/A
Horsepower: 1.0 Horsepower: N/A Horsepower: N/A
Motor Speed (RPM): — Motor Speed (RPM): N/A Motor Speed (RPM): N/A
Phase 3 Phase N/A Phase N/A
Full Load Amps: 5.00 Full Load Amps: N/A Full Load Amps: N/A
Locked Rotor Amps: 32 Locked Rotor Amps: N/A Locked Rotor Amps: N/A
COMPRESSOR Circuit 1/2 OUTDOOR MOTOR
Number: 1 Number: 1
Horsepower: 5.6 Horsepower: 0.70
Phase: 3 Motor Speed (RRM): 1100
Rated Load Amps: 22.4 Phase: 1
Locked Rotor Amps: 149.0 Full Load Amps: 3.5
Locked Rotor Amps: 10.9
POWER EXHAUST ACCESSORY ' FILTERS REFRIGERANT (2)
(Field Installed Power Exhaust)
Type R -410
Phase: N/A T Throwaway
Horsepower: N/A Furnished: Yes Factory Charge
Motor Speed (RPM): N/A Number 4 Ciruit #1 5.3 lb
Full Load Amps: N/A Recommended 16'x25 "x2" Ciruit #2 N/A
Locked Rotor Amps: N/A
NOTES.
1. Maximum (HACR) Circuit Breaker sizing is for installations in the United States only
2. Refrigerant charge is an approximate value. For a more precise value. see unit nameplate and service instructions.
3. Value does not include Power Exhaust Accessory.
4. Value includes oversized motor.
5. Value does not include Power Exhaust Accessory.
6. EER is rated at AHRI conditions and in accordance with DOE test procedures.
Page 4
Y INSTALLED ACCESSORIES NET WEIGHT DATA
ACCESSORY _1 WEIGHTS
ECONOMIZER
MOTORIZED OUTSIDE AIR DAMPER
0 O MANUAL OUTSIDE AIR DAMPER
�{ BAROMETRIC RELIEF
C OVERSIZED MOTOR
�� BELT DRIVE MOTOR
�� POWER EXHAUST
"�````4 / THROUGHT THE BASE ELECTRICAL IFIOPS)
■ � \\```` ��'� / UNIT MOUNTED CIRCUIT BREAKER iFIOPSi
�`� UNIT MOUNTED DISCONNECT ■FIOPS)
POWERED CONVENIENCE OUTLET i FIOPS)
t'/` HINGED DOORS iFIOPS)
� 0 HAIL GUARD
A
SMOKE DETECTOR, SUPPLY /RETURN 7.0 lb
NOVAR CONTROL
PACKAGED GAS / ELECTRICAL
CORNER WEIGHT STAINLESS STEEL HEAT EXCHANGER
REHEAT
ROOF CURB
BASIC UNIT WEIGHTS CORNER WEIGHTS CENTER OF GRAVITIY
SHIPPING NET AO 222.0 lb 0 121 0 lb (E)LENGHT Fl WIDTH
805.0 lb 710.0 lb 0 217.0 lb 0 1500Ib 41`
NOTE:
1. CORNER WEIGHTS ARE GIVEN FOR INFORMATION ONLY.
2. TO ESTIMATE SHIPPING WEIGHT ADD 5 LBS TO NET WEIGHT.
S' 3. BASIC UNIT WEIGHT DOES NOT INCLUDE ACCESSORY WEIGHT. TO OBTAIN TOTAL
WEIGHT, ADD ACCESSORY NET WEIGHT TO BASIC UNIT WEIGHT.
4 WEIGHTS FOR OPTIONS NOT LISTED ARE >5 LBS.
'''-'',,,%. X ,:',:-.-------. - 4 :2
(V>4 i
• _ ' ` ti p`\
< ■Lz..., .
PACKAGED GAS / ELECTRICAL
RIGGING AND CENTER OF GRAVITY
Page 5
, .....
CLEARANCE FROM TOP OF UNIT 77'
CLEARANCE 36"
CLEARANCE 48"
e7
1 lU. :11\
\ RETURN -----
`I i
DOWNFLOW CLEARANCE 36"
HORIZONTAL CLEARANCE 18"
CLEARANCE 36"
PACKAGED GAS / ELECTRIC
CLEARANCE
ROOF OPENING
I
UNrr OUTLINE -- I
\H 46" 1 53 1/4"
I i I
I I
46"
88 5/8"
PACKAGED GAS / ELECTRIC
DOWNFLOW TYPICAL ROOF OPENING
Page 6
• 0 TRaNE
(.... teal.
--
1,,, , t
m7
' ECONOMIZER HOOD
i
I _
0 1-- ECONOMIZER HOOD
o
6 718"
• 00 MI= O 00
ACCESSORY - ECONOMIZER HOOD
Page 7
TE
• e Qeneral
The units shall be convertible airflow. The operating range shall be between 115 °F and 0 °F incooling as standard from the factory for units with
microprocessor controls. Operating range for units with electromechanical controls shall be between 115 °F and 40 °F. Cooling performance shall
be rated in accordance with ARI testing procedures. All units shall be factory assembled, internally wired, fully charged with R -410A, and 100
percent run tested to check cooling operation, fan and blower rotation, and control sequence before leaving the factory. Wiring internal to the unit
shall be colored and numbered for simplified identification. Units shall be cULus listed and labeled, classified in accordance for Central Cooling Air
Conditioners.
Casing
Unit casing shall be constructed of zinc coated, heavy gauge, galvanized steel. Exterior surfaces shall be cleaned, phosphatized, and finished with
a weather- resistant baked enamel finish. Unit's surface shall be tested 672 hours in a salt spray test in compliance with ASTM B117. Cabinet
construction shall allow for all maintenance on one side of the unit. Service panels shall have lifting handles and be removed and reinstalled by
removing two fasteners while providing a water and air tight seal. All exposed vertical panels and top covers in the indoor air section shall be
insulated with a cleanable foil- faced, fire - retardant permanent, odorless glass fiber material. The base of the unit shall be insulated with 1/8 inch,
foil- faced, closed -cell insulation. All insulation edges shall be either captured or sealed. The unit's base pan shall have no penetrations within the
perimeter of the curb other than the raised 1 1/8 inch high downflow supply /return openings to provide an added water integrity precaution, if the
condensate drain backs up. The base of the unit shall have provisions for forklift and crane lifting, with forklift capabilities on three sides of the
unit.
Unit Top
The top cover shall be one piece construction or, where seams exist, it shall be double- hemmed and gasket - sealed. The ribbed top adds extra
strength and enhances water removal from unit top.
Filters
Throwaway filters shall be standard on all units. Optional 2 - inch MERV 8 and MERV 13 filters shall also be available.
Compressors
All units shall have direct- drive, hermetic, scroll type compressors with centrifugal type oil pumps. Motor shall be suction gas - cooled and shall
have a voltage utilization range of plus or minus 10 percent of unit nameplate voltage. Internal overloads shall be provided with the scroll
compressors.
Crankcase heaters shall be included on 6 -10 ton units.
Dual compressors are outstanding for humidity control, light load cooling conditions and system back -up applications. Dual compressors are
available on 7 -10 ton models and allow for efficient cooling utilizing 3- stages of compressor operation for all high efficiency models.
Indoor Fan
The following units shall be equipped with a direct drive plenum fan design (T /YSC120E, T /YHC092,102, 120E). Plenum fan design shall include a
backward - curved fan wheel along with an external rotor direct drive variable speed indoor motor. All plenum fan designs will have a variable
speed adjustment potentiometer located in the control box. 3 -5 ton units (standard efficiency 3 -phase or high efficiency 3 -phase with optional
motor) are belt driven, FC centrifugal fans with adjustable motor sheaves. 3 -5 ton units (1 -phase or high efficiency 3- phase) have multispeed,
direct drive motors. All 6 -8 ton units (standard efficiency) shall have belt drive motors with an adjustable idler -arm assembly for quick -
adjustment to fan belts and motor sheaves. All motors shall be thermally protected. All 10 tons and 71/2-8 (high efficiency) have variable speed
direct drive motors. All indoor fan motors meet the U.S. Energy Policy Act of 1992 (EPACT).
Outdoor Fans
The outdoor fan shall be direct - drive, statically and dynamically balanced, draw - through in the vertical discharge position. The fan motor shall be
permanently lubricated and shall have built -in thermal overload protection.
Evaporator and Condenser Coils
Internally finned, 5/16" copper tubes mechanically bonded to a configured aluminum plate fin shall be standard. The microchannel type condenser
coil is standard for the T /YSC 10 ton models and 7 ton high efficiency models. The microchannel type condenser coil is not offered on the 71/2
ton dehumidification model. Due to flat streamlined tubes with small ports, and metallurgical tube -tofin bond, microchannel coil has better heat
transfer performance. Microchannel condenser coil can reduce system refrigerant charge by up to 50% because of smaller internal volume, which
leads to better compressor reliability. Compact all- aluminum microchannel coils also help to reduce the unit weight. All- aluminum construction
improves re- cyclability. Galvanic corrosion is also minimized due to allaluminum construction. Strong aluminum brazed structure provides better
fin protection. In addition, flat streamlined tubes also make microchannel coils more dust resistant and easier to clean. Coils shall be leak tested
at the factory to ensure the pressure integrity. The evaporator coil and condenser coil shall be leak tested to 600 psig. The assembled unit shall
Page 8
=ANT
b? leak tested to 465 psig. The condenser coil shall have a patent pending 1 +1 +1 hybrid coil designed with slight gaps for ease of cleaning. A
removable, reversible, double - sloped condensate drain pan with through the base condensate drain is standard.
Controls
Unit shall be completely factory -wired with necessary controls and contactor pressure lugs or terminal block for power wiring. Unit shall provide
an external location for mounting a fused disconnect device. A choice of microprocessor or electromechanical controls shall be available.
Microprocessor controls provide for all 24V control functions. The resident control algorithms shall make all heating, cooling, and /or ventilating
decisions in response to electronic signals from sensors measuring indoor and outdoor temperatures. The control algorithm maintains accurate
temperature control, minimizes drift from set point, and provides better building comfort. A centralized microprocessor shall provide anti -short
cycle timing and time delay between compressors to provide a higher level of machine protection. 24 -volt electromechanical control circuit shall
include control transformer and contactor
High Pressure Control
All units include High Pressure Cutout as standard.
Phase monitor
Phase monitor shall provide 100% protection for motors and compressors against problems caused by phase loss, phase imbalance, and phase
reversal. Phase monitor is equipped with an LED that provides an ON or FAULT indicator. There are no field adjustments. The module will
automatically reset from a fault condition.
Refrigerant Circuits
Each refrigerant circuit offer thermal expansion valve as standard. Service pressure ports, and refrigerant line filter driers are factory - installed as
standard. An area shall be provided for replacement suction line driers,
Gas Heating Section
The heating section shall have a progressive tubular heat exchanger design using stainless steel burners
and corrosion resistant steel throughout. An induced draft combustion blower shall be used to pull the combustion products through the firing
tubes. The heater shall use a direct spark ignition (DSI) system. On initial call for heat, the combustion blower shall purge the heat exchanger for
20 seconds before ignition After three unsuccessful ignition attempts, the entire heating system shall be locked out until manually reset at the
thermostat /zone sensor. Units shall be suitable for use with natural gas or propane (field - installed kit) and also comply with the California
requirement for low NOx emissions (Gas /Electric Only).
Economizer
This accessory shall be available with or without barometric relief. The assembly includes fully modulating 0 -100 percent motor and dampers,
minimum position setting, preset linkage, wiring harness with plug, spring return actuator and fixed dry bulb control. The barometric relief shall
provide a pressure operated damper that shall be gravity closing and shall prohibit entrance of outside air during the equipment off cycle.
Optional solid state or differential enthalpy control shall be available for either factory or field installation. The economizer arrives in the shipping
position and shall be moved to the operating position by the installing contractor.
Supply and /or Return Air Smoke Detector
Smoke detector shall be factory installed photoelectric smoke detector mounted in the return air section (with or without the economizer or
motorized damper option), AND /OR in the supply air fan compartment. The detector will be wired for continuous power whenever the unit is
energized. Upon detection of smoke, the detector will shut down all unit operations. Local codes may dictate the location of detectors. Note:
Due to the shipping position of the economizer or motorized damper, the return air smoke detector will not be completely factory installed. The
wiring harness for the detector will be routed and tied off in the fan compartment for shipping. The smoke detector and barometric damper hood
will also be installed in a shipping position in the fan compartment.
Frostat
This option is to be utilized as a safety device. The Frostat opens when temperatures on the evaporator coil fall below 10 °F. The temperature will
need to rise to 50 °F before closing. This option should be utilized in low airflow or high outside air applications. (Cooling with Electric Heat Only.)
Page 9