Report Certified Drawing for RTU
Project:-Untitled3 12/16/2015
Prepared By: 08:59AM
NOTES:
Nolo
I.DINEXIM AAE IX INC N[S DI XE XS IONS UX[i J X 11 PNASEI (J PNAS[1 If ANNRaaIFS'iln us[.1 Xsse nlxam l,Sx s ASanuXenImArT c
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3.y DIRECTION 01 AIR FLW IBlil 13111 (1121
y/B A 1310'1351 DIA FIELD-11 SUPPLY NOTE
IBR[06 11 JIB II 118 10 5 2'1501 DIA INNER SUPPLY NNa ROUT
11051] 1311] 11121
1.1511 DIA GAUGE AC[I35 PLUG
D IIB/1221 DIA FIELD CONTROL HIRE FAS—E
II-- 33-IIB --yII
1010] E 311-11 RPT CWDEXSDRAIN
f 62-14262-14 XPi GAS CONNECTION ECTION
• �F 6 21/2'1611 DIA PWER SUPPLY KNOCK-Wi
12-111 �E[OXONI IEP XaD
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wa
FILT,R ACCESS PANEL THRU-THE BASE CHART
IOOI-LI. A WP. THE S[XOL[5 AEW IA Ea fOR USE
CCE55 CONDENSER (IBTNPYA001 01, 03A01
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Alp 2•• 10031 112'FIT GAS 3116'(30.01
111111 FOA'THRU-THE-OASEPAN'FACTORY OPTION,
HACK ANOIE 16510 -- I FITTINGS FON ONLY X,Y,0 2 ARE PROVIDED
CYp LE
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uR0 Ii-311 I TOR PWER,DEPENDING W.IRE S12E
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DR11511 � 10011 PROVIDES 311'FPT TRRU CURB
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OUII Ei DISCOXNICi AR O N [53911
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Xm nrRkRxfi 481C 04-06 SINGLE ZONE ELECTRICAL 48K0000281 a<N
IXDF2 09-16-14 COOLING WITH GAS HEAT -
Packaged Rooftop Builder 1.39v Page 2 of 23
Certified Drawing for RTU
Project:—Untitled3 12/16/2015
Prepared By: 08:59AM
((J,RNITED _
STD.UNIT CORNEA CORNER COA NEA CmIIR C.6. NEIGNi `_ CSR 061E3 rnlrtHIM
to�1wrt uu t>
UNIT RF]6XT T6:16Xi RAI NE16XT 161 RE IOXi IC) NE I6NT 101
163. N0. 163. X6. LIS. I6. 163. N6. LBS. I6. 1 1 Z
/SAC 01 110 Zit l2D 5/ 111 50 125 51 155 /1 55)II Mss t/3//11361 16 TlI 1111]
IMC OS 511 t11 130 5t 131 51 I" I1 111 t{ )t 111 INuI tl]/1 1It61 16 1/t[1111
1611[Ot Sli n0 111 6/ 151 10 56 111/ 1 112 1 t/ 1 31 116 11131 tl 1/i 151/1 t0 III[5111
•STAIDARD UNIT WIGHT IS WITH LURE GAS NEAT AND WITHOUT PACKAGING.
TOA OTHER OPTIONS AND ACCESSORIES.REFER TO TIE PRODUCT DATA CATALOG.
CORNER A CORNER 0
O
1 0
19
CORNER 0 CORNER C
1
TOP
C�
00 01
FRONT
48KC 04-06 SINGLE ZONE ELECTRICAL 48KC000281
t v z 09-16-14 -7 COOLING V TH GAS HEAT -
Packaged Rooftop Builder 1.39v Page 3 of 23
Certified Drawing for RTU
Project:-Untitled3 12/16/2015
Prepared By: 08:59AM
Service Clearance
LOCATION DIMENSION CONDITION
48-in J1219 mm •Und disconnect is mouded on net
A 18-in(457 mm) •No dll—nect,carsenknce outlet option
•Recommended servke clearance
134n 1305 mm •Minimum clearance
42-In(1O67mm) -Surface behind ser erlsgr0unded(e.g.,metal,mos wall}
B 3 in 914 mm •Surface behind servk is electrics Z.—Jictirve e..,wood,fiber Wss
Spedal -Check for sources of flue products wdhin 10 ft.of unit treshair intake hood
C 35-in 914 mm) •Side condensate drain Ls used
18-In 457 mm •Minimum clearance
481n(1219 mm) dschare accessoryinstalled,surfacels combusbbie materiel
47-in 1106/mm •Surface heNM service rwMed e..,metal,mos wall,another unt
0 36In1914 mm) •Surface beNM siNcerls electrically Iwrlcondudlve(e..,wood,fiber lass)
Special Check for for adjacent units cr building fresh air intakes within lo-ft.of this uniCs
flue outlet
NOTE:UM nit disgned to have overhead obstruction.CondactApplication Engineering for guidance on any
application planning overhead obstru Tian m vertical dearances.
Packaged Rooftop Builder 1.39v Page 4 of 23
Performance Summary For RTU
Project: -Untitled3 12/16/2015
Prepared By: 08:59AM
Part Number:48KCDA04A2AMAOA0
ARI SEER: . . - 14.00
Base Unit Dimensions
Unit Length: - - 74.4 in
Unit Width:.. .__ - - .46.8 in
Unit Height: _ .__ __33.4 in
Operating Weight
Base Unit Weight: 490 Ib
Medium Static Option Belt Drive --.._._ _ __.__ __................ _.. _..... ------ ... .......... Ib
Total Operating Weight: 500 Ib
Unit
Unit Voltage-Phase-Hertz:
Air Discharge:.. ...._._..__Vertical
Fan Drive Type:- ...._.. -- ..,Belt
Actual Airflow:_ . .. . -- ------- -- ----- ------ --- . ...... ........... 1200 CFM
Site Altitude:. ..... - ---- - -----------............ ----- -------------- 0 ft
Cooling Performance
Condenser Entering Air DB:....... - - - 95.0 F
Evaporator Entering Air DB:--- - 80.0 F
Evaporator Entering Air WB:.-- - 67.0 F
Entering Air Enthalpy:------- ------.-- - .---- ------------.-_._. ................ 31.44 BTU/Ib
Evaporator Leaving Air DB:............................._.. ............ -- -- - ------ - -- - ..-59.4 F
EvaporatorLeaving Air WB:_-........_._............... ............... ...... --- . _ ......_..-- ....... . ...................-----.....-.......57.5 F
Evaporator Leaving Air Enthalpy________ ____ ______________24.70 BTU/Ib
Gross Cooling Capacity: ................._..36.41 MBH
Gross Sensible Capacity: _____ .... 26.71 MBH
CompressorPower Input:_.... .........................- - --------------------- ............................................_..._......... _...._...._-..._.2.95 kW
Coil Bypass Factor: 0.113
Heating Performance
Heating Airflow:..........................._..__.. _..... _._.._................................................-- - 1200 CFM
Entering Air Temp: ...............- - 70.0 F
Leaving Air Temp:-------- - ._... ---- ------_------__..._............................. ------- _..110.9 F
Gas Heating Input Capacity: ...............- -- --- _.........-.._.......................- --------------------....-...--.65.0 MBH
Gas Heating Output Capacity:. ........ 0.0/53.0 MBH
Temperature Rise: _____ ........... _____-____.___40.9 F
Supply Fan
External Static Pressure: ..... .......0.50 in wg
Fan RPM. 826
FanPower:_ -- -------------------- --........................- - -_....--...........--.... -- ------------------- -...................-_-...... .....--..........--..0.42 BHP
NOTE:------ -.... - - ----- --- -------...._.._.....-......Selected IFM RPM Range: 770-1175
Electrical Data
VoltageRange:............................ _ .......... ..........-...---------- - - __....... - ... __......................... 87-253
Compressor#1 RLA:- .. ....... _._.... - - ......... - -.....16.6
Compressor#1 LRA:.._......................................_.........._................ -...._....__._........................... - ..... _----------------------------------..79
Outdoor Fan Motor Qty:- - ... - - -------------- -- - --------------------- - - -- ----------------..._.-_.........- 1
Outdoor Fan FLA(ea): - - - - - 1
Indoor Fan Motor Type: - MED
Indoor Fan Motor FLA: - - - ...- 4.9
Combustion Fan Motor FLA(ea): -- -- - 0.48
Power Supply MCA: - - - - - 27
Power Supply MOCP (Fuse or HACR):_ __ _ ______ ____._ .. _________...___40
Disconnect Size FLA:.__. .........- .. ------- - - - - - --26
Packaged Rooftop Builder 1.39v Page 5 of 23
Performance Summary For RTU
Project: Untitled3 12/16/2015
Prepared By: 08:59AM
Disconnect Size LRA:..... - .........._............... 93
Electrical Convenience Outlet: ..........._..___ ___ ___ None
Control Panel SCCR: 5kA RMS at Rated Symmetrical Voltage
Acoustics
Sound Power Levels, db re 10E-12 Wafts
Discharge Inlet Outdoor
63 Hz 83.3 85.4 78.2
125 Hz 76.0 73.2 78.0
250 Hz 65.6 58.8 74.2
500 Hz 62.3 58.6 73.3
1000 Hz 59.0 58.3 70.6
2000 Hz 53.4 52.3 66.0
4000 Hz 54.4 47.2 62.4
8000 Hz 48.6 38.7 56.9
A-Weighted 66.3 64.4 76.0
Advanced Acoustics
_ � s
� 3
1
Advanced Accoustics Parameters
1. Unit height above ground:............ __..._30.0 ft
2. Horizontal distance from unit to receiver:_.._.._._.....50.0 ft
3. Receiver height above ground: 5.7 ft
4. Height of obstruction: 0.0 ft
5. Horizontal distance from obstruction to receiver:- _0.0 ft
6. Horizontal distance from unit to obstruction:_._......._0.0 ft
Detailed Acoustics Information
Octave Band Center Freq. Hz 63 125 250 500 1k 2k 4k 8k Overall
A 78.2 78.0 74.2 73.3 70.6 66.0 62.4 56.9 82.9 Lw
B 52.0 61.9 65.6 70.1 70.6 67.2 63.4 55.8 75.4 LwA
C 45.8 45.6 41.8 40.9 38.2 33.6 30.0 24.5 50.5 L
D 19.6 29.5 33.2 37.7 38.2 34.8 31.0 23.4 43.0 L A
Legend
A Sound Power Levels at Unit's Acoustic Center, Lw
B A-Weighted Sound Power Levels at Unit's Acoustic Center, LwA
C Sound Pressure Levels at Specific Distance from Unit, Lp
D A-Weighted Sound Pressure Levels at Specific Distance from Unit, LpA
Packaged Rooftop Builder 1.39v Page 6 of 23
Performance Summary For RTU
Project: —Untitled3 12/16/2015
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Calculation methods used in this program are patterned after the ASHRAE Guide; other ASHRAE Publications and the AHRI
Acoustical Standards. While a very significant effort has been made to insure the technical accuracy of this program, it is assumed
that the user is knowledgeable in the art of system sound estimation and is aware of the tolerances involved in real world acoustical
estimation. This program makes certain assumptions as to the dominant sound sources and sound paths which may not always be
appropriate to the real system being estimated. Because of this, no assurances can be offered that this software will always generate
an accurate sound prediction from user supplied input data. If in doubt about the estimation of expected sound levels in a space, an
Acoustical Engineer or a person with sound prediction expertise should be consulted.
FanCurve
20
,s
3.00BHP
16
9O0RPM
p�14
c �
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ui 1D �
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7OOFFM
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.a_. \
06
Da
V
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o.so
CO
00 03 06 09 12 15 18 21 24
Alrflow(CFM-#=sands)
RPM=826 BHP=0.42 Maximum RPM=2100 MaximumBHP=2.90
Note:Pleasecontactapphcationengineenngforselectionsoutsidetheshadedregion.
SC-SysternCurve RP-RatedPoint
Packaged Rooftop Builder 1.39v Page 7 of 23
Guide Specification for RTU
Project: -Untitled3 12/16/2015
Prepared By: 08:59AM
GUIDE SPECIFICATIONS - 48KC**04-06
Gas Heat/Electric Cooling Packaged Rooftop
HVAC Guide Specifications
Size Range: 3 to 5 Nominal Tons
Section Description
23 06 80 Schedules for Decentralized HVAC Equipment
23 0680.13 Decentralized Unitary HVAC Equipment Schedule
23 06 80.13.A. Rooftop unit schedule
1. Schedule is per the project specification requirements.
23 07 16 HVAC Equipment Insulation
23 07 16.13 Decentralized,Rooftop Units:
23 07 16.13.A. Evaporator fan compartment:
1. Interior cabinet surfaces shall be insulated with a minimum 1/2-in. thick, minimum 1 1/2 lb density, flexible fiberglass
insulation bonded with a phenolic binder,neoprene coated on the air side.
2. Insulation and adhesive shall meet NFPA 90A requirements for flame spread and smoke generation.
23 07 16.13.B. Gas heat compartment:
1. Aluminum foil-faced fiberglass insulation shall be used.
2. Insulation and adhesive shall meet NFPA 90A requirements for flame spread and smoke generation.
2309 13 Instrumentation and Control Devices for HVAC
23 09 13.23 Sensors and Transmitters
2309 13.23.A. Thermostats
1. Thermostat must
a. energize both"W"and"G"when calling for heat.
b. have capability to energize 1 stage of cooling,and 2 different stages of heating.
c. include capability for occupancy scheduling.
23 09 23 Direct-digital Control system for HVAC
23 0923.13 Decentralized,Rooftop Units:
23 09 23.13.A. PremierLink controller
1. Shall be ASHRAE 62-2001 compliant.
2. Shall accept 18-32 VAC input power.
Packaged Rooftop Builder 1.39v Page 8 of 23
Guide Specification for RTU
Project: -Untitled3 12/16/2015
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3. Shall have an operating temperature range from-40T(-40°C)to 158T(70°C), 10%-95%RH(non-condensing).
4. Shall include an integrated economizer controller to support an economizer with 4 to 20 mA actuator input and no
microprocessor controller.
5. Controller shall accept the following inputs: space temperature, setpoint adjustment, outdoor air temperature, indoor air
quality, outdoor air quality, indoor relative humidity, compressor lock-out, fire shutdown, enthalpy, fan status, remote time
clock/door switch.
6. Shall ace, (DCV) Y accept a CO2 sensor in the conditioned s and be Demand Control Ventilation DCV ready.
P
7. Shall provide the following outputs: economizer, fan, cooling stage 1, cooling stage 2, heat stage 1, heat stage 2, heat stage
3/exhaust/reversing valve/dehumidify/occupied.
r
8. Unit shall provide surge protection for the controller though a circuit breaker.
9. Shall be Internet capable,and communicate at a Baud rate of 38AK or faster
10. Shall have an LED display independently showing the status of activity on the communication bus,and processor operation.
11. Shall include an EIA-485 protocol communication port, an access port for connection of either a computer or a Carrier
technician tool, an EIA-485 port for network communication to intelligent space sensors and displays, and a port to connect
an optional LonWorks plug-in communications card.
12. Shall have built-in Carrier Comfort Network TM (CCN) protocol, and be compatible with other CCN devices, including
ComfortLinkTm and ComfortVIEWTM controllers.
13. Shall have built-in support for Carrier technician tool.
14. Software upgrades will be accomplished by local download. Software upgrades through chip replacements are not allowed.
15. Shall be shock resistant in all planes to 5G peak, l lms during operation,and 100G peak, l]ms during storage.
16. Shall be vibration resistant in all planes to 1.5G @ 20-300 Hz.
17. Shall support a bus length of 4000 ft(1219m)max, 60 devices per 1000 ft(305m)section, and 1 RS-485 repeater per 1000
ft(305m)sections.
23 09 23.13.13. RTU Open-Open protocol,direct digital controller:
1. Shall be ASHRAE 62-2001 compliant.
2. Shall accept 18-30VAC,50-60Hz,and consumer 15VA or less power.
3. Shall have an operating temperature range from-40T(-40°C)to 130T(540C), 10%-90%RH(non-condensing).
4. Shall include built-in protocol for BACNET (MS/TP and PTP modes), Modbus (RTU and ASCII), Johnson N2 and
LonWorks. LonWorks Echelon processor required for all Lon applications shall be contained in separate communication
board.
5. Shall allow access of up to 62 network variables(SNVT). Shall be compatible with all open controllers.
6. Baud rate Controller shall be selectable using a dipswitch.
7. Shall have an LED display independently showing the status of serial communication, running, errors, power, all digital
outputs,and all analog inputs.
8. Shall accept the following inputs: space temperature, setpoint adjustment, outdoor air temperature, indoor air quality,
outdoor air quality, compressor lock-out, fire shutdown, enthalpy switch, and fan status/filter status/ humidity/ remote
occupancy.
9. Shall provide the following outputs:economizer,variable frequency drive,fan,cooling stage 1,cooling stage 2,heat stage 1,
heat stage 2,exhaust reversing valve/high fan speed.
10. Shall have built-in surge protection circuitry through solid state polyswitches.Polyswitches shall be used on incoming power
and network connections.Polyswitches will return to normal when the"trip"condition clears.
11. Shall have a battery back-up capable of a minimum of 10,000 hours of data and time clock retention during power outages.
12. Shall have built-in support for Carrier technician tool.
13. Shall include an EIA-485 protocol communication port, an access port for connection of either a computer or a Carrier
technician tool, an EIA-485 port for network communication to intelligent space sensors and displays, and a port to connect
an optional LonWorks communications card.
14. Software upgrades will be accomplished by either local or remote download. No software upgrades through chip
replacements are allowed.
23 09 33 Electric and Electronic Control System for HVAC
23 0933.13 Decentralized, Rooftop Units:
23 09 33.13.A. General:
1. Shall be complete with self-contained low-voltage control circuit protected by a resettable circuit breaker on the 24-v
Packaged Rooftop Builder 1.39v Page 9 of 23
Guide Specification for RTU
Project: -Untitled3 12/16/2015
Prepared By: 08:59AM
transformer side.Transformer shall have 75VA capability.
2. Shall utilize color-coded wiring.
3. Shall include a central control terminal board to conveniently and safely provide connection points for vital control functions
such as: smoke detectors, phase monitor, gas controller, economizer, thermostat, DDC control options, and low and high
pressure switches.
4. The heat exchanger shall be controlled by an integrated gas controller(IGC) microprocessor. See heat exchanger section of
this specification.
5. Unit shall include a minimum of one 8-pin screw terminal connection board for connection of control wiring.
23 09 33.23.13. Safeties:
1. Compressor over-temperature,over-current. High internal pressure differential.
2. Low pressure switch.
a. Low pressure switch shall use different color wire than the high pressure switch.The purpose is to assist the installer and
service technician to correctly wire and or troubleshoot the rooftop unit.
3. High pressure switch.
a. High pressure switch shall use different color wire than the low pressure switch.The purpose is to assist the installer and
service technician to correctly wire and or troubleshoot the rooftop unit.
4. Automatic reset,motor thermal overload protector.
5. Heating section shall be provided with the following minimum protections:
a. High temperature limit switches.
b. Induced draft motor speed sensor.
c. Flame rollout switch.
d. Flame proving controls.
23 09 93 Sequence of Operations for HVAC Controls
23 0993.13 Decentralized,Rooftop Units:
23 0993.13 INSERT SEQUENCE OF OPERATION
2340 13 Panel Air Filters
2340 13.13 Decentralized,Rooftop Units:
23 40 13.13.A. Standard filter section
1. Shall consist of factory installed,low velocity,disposable 2-in.thick fiberglass filters of commercially available sizes.
2. Unit shall use only one filter size.Multiple sizes are not acceptable.
3. Filters shall be accessible through an access panel with "no-tool" removal as described in the unit cabinet section of this
specification(23 81 19.13.G).
2381 19 Self-Contained Air Conditioners
23 81 19.13 Small-Capacity Self-Contained Air Conditioners(48KC**04-06)
23 81 19.13.A. General
1. Outdoor, rooftop mounted,electrically controlled,heating and cooling unit utilizing a fully hermetic scroll compressor(s)for
cooling duty and gas combustion for heating duty.
2. Factory assembled, single-piece heating and cooling rooftop unit. Contained within the unit enclosure shall be all factory
wiring,piping,controls,and special features required prior to field start-up.
3. Unit shall use Puron refrigerant.
4. Unit shall be installed in accordance with the manufacturer's instructions.
5. Unit must be selected and installed in compliance with local,state,and federal codes.
23 81 19.13.13. Quality Assurance
1. Unit meets ASHRAE 90.1 minimum efficiency requirements.
2. Unit shall be rated in accordance with AHRI Standards 210/240.
3. Unit shall be designed to conform to ASHRAE 15,2001.
4. Unit shall be UL-tested and certified in accordance with ANSI Z21.47 Standards and UL-listed and certified under Canadian
standards as a total package for safety requirements.
5. Insulation and adhesive shall meet NFPA 90A requirements for flame spread and smoke generation.
6. Unit casing shall be capable of withstanding 500-hour salt spray exposure per ASTM B 117(scribed specimen).
7. Unit shall be designed in accordance with ISO 9001,and shall be manufactured in a facility registered by ISO 9001.
Packaged Rooftop Builder 1.39v Page 10 of 23
Guide Specification for RTU
Project: —Untitled3 12/16/2015
Prepared By: 08:59AM
8. Roof curb shall be designed to conform to NRCA Standards.
9. Unit shall be subjected to a completely automated run test on the assembly line. The data for each unit will be stored at the
factory,and must be available upon request.
10. Unit shall be designed in accordance with UL Standard 1995, including tested to withstand rain.
11. Unit shall be constructed to prevent intrusion of snow and tested to prevent snow intrusion into the control box up to 40 mph.
12. Unit shake tested to assurance level 1,ASTM D4169 to ensure shipping reliability.
23 81 19.13.C. Delivery, Storage,and Handling
1. Unit shall be stored and handled per manufacturer's recommendations.
2. Lifted by crane requires either shipping top panel or spreader bars.
3. Unit shall only be stored or positioned in the upright position.
23 81 19.13.D. Project Conditions
1. As specified in the contract.
23 81 19.13.E. Operating Characteristics
1. Unit shall be capable of starting and running at 115°F (46°C)ambient outdoor temperature,meeting maximum load criteria
of AHRI Standard 210/240 or 340/360 at± 10%voltage.
2. Compressor with standard controls shall be capable of operation down to 40°F (4°C), ambient outdoor temperatures.
Accessory winter start kit is necessary if mechanically cooling at ambient temperatures down to 25°F(-4°C).
3. Unit shall discharge supply air vertically or horizontally as shown on contract drawings.
4. Unit shall be factory configured for vertical supply&return configurations.
5. Unit shall be field convertible from vertical to horizontal airflow on all models.No special kit required.
6. Unit shall be capable of mixed operation:vertical supply with horizontal return or horizontal supply with vertical return.
23 81 19.13.F. Electrical Requirements
1. Main power supply voltage,phase,and frequency must match those required by the manufacturer.
23 81 19.13.G. Unit Cabinet
1. Unit cabinet shall be constructed of galvanized steel, and shall be bonderized and coated with a prepainted baked enamel
finish on all externally exposed surfaces.
2. Unit cabinet exterior paint shall be: film thickness, (dry) 0.003 inches minimum,gloss (per ASTM D523, 60°F/ 16°C): 60,
Hardness:H-2H Pencil hardness.
3. Evaporator fan compartment interior cabinet insulation shall conform to AHRI Standards 210/240 minimum exterior sweat
criteria. Interior surfaces shall be insulated with a minimum 1/2-in. thick, 1 lb density, flexible fiberglass insulation,
neoprene coated on the air side.Aluminum foil-faced fiberglass insulation shall be used in the gas heat compartment.
4. Base of unit shall have a minimum of four locations for thru-the-base gas and electrical connections(factory installed or field
installed), standard.
5. Base Rail
a. Unit shall have base rails on a minimum of 2 sides.
b. Holes shall be provided in the base rails for rigging shackles to facilitate maneuvering and overhead rigging.
c. Holes shall be provided in the base rail for moving the rooftop by fork truck.
d. Base rail shall be a minimum of 16 gauge thickness.
6. Condensate pan and connections:
a. Shall be a sloped condensate drain pan made of a non-corrosive material.
b. Shall comply with ASHRAE Standard 62.
c. Shall use a 3/4"-14 NPT drain connection,possible either through the bottom or side of the drain pan.Connection shall
be made per manufacturer's recommendations.
7. Top panel:
a. Shall be a single piece top panel on all sizes.
8. Gas Connections:
a. All gas piping connecting to unit gas valve shall enter the unit cabinet at a single location on side of unit(horizontal
plane).
b. Thru-the-base capability
(1.)Standard unit shall have a thru-the-base gas-line location using a raised,embossed portion of the unit basepan.
(2.)Optional,factory approved,water-tight connection method must be used for thru-the-base gas connections.
(3.)No basepan penetration,other than those authorized by the manufacturer,is permitted.
9. Electrical Connections
Packaged Rooftop Builder 1.39v Page 11 of 23
Guide Specification for RTU
Project: —Untitled3 12/16/2015
Prepared By: 08:59AM
a. All unit power wiring shall enter unit cabinet at a single,factory prepared,knockout location.
b. Thru-the-base capability.
(1.)Standard unit shall have a thru-the-base electrical location(s)using a raised,embossed portion of the unit basepan.
(2.)Optional,factory approved,water-tight connection method must be used for thru-the-base electrical connections.
(3.)No basepan penetration,other than those authorized by the manufacturer,is permitted.
10. Component access panels(standard)
a. Cabinet panels shall be easily removable for servicing.
b. Unit shall have one factory installed,tool-less,removable,filter access panel.
c. Panels covering control box,indoor fan, indoor fan motor,gas components(where applicable),and compressors shall
have molded composite handles.
d. Handles shall be UV modified,composite.They shall be permanently attached,and recessed into the panel.
e. Screws on the vertical portion of all removable access panel shall engage into heat resistant,molded composite collars.
f. Collars shall be removable and easily replaceable using manufacturer recommended parts.
23 81 19.13.H. Gas Heat
1. General
a. Heat exchanger shall be an induced draft design. Positive pressure heat exchanger designs shall not be allowed.
b. Shall incorporate a direct-spark ignition system and redundant main gas valve.
c. Gas supply pressure at the inlet to the rooftop unit gas valve must match that required by the manufacturer.
2. The heat exchanger shall be controlled by an integrated gas controller(IGC)microprocessor.
a. IGC board shall notify users of fault using an LED(light-emitting diode).
b. The LED shall be visible without removing the control box access panel.
c. IGC board shall contain algorithms that modify evaporator fan operation to prevent future cycling on high temperature
limit switch.
d. Unit shall be equipped with anti-cycle protection with one short cycle on unit flame rollout switch or 4 continuous short
cycles on the high temperature limit switch.Fault indication shall be made using an LED.
3. Standard Heat Exchanger construction
a. Heat exchanger shall be of the tubular-section type constructed of a minimum of 20-gauge steel coated with a nominal
1.2 mil aluminum-silicone alloy for corrosion resistance.
b. Burners shall be of the in-shot type constructed of aluminum-coated steel.
c. Burners shall incorporate orifices for rated heat output up to 2000 ft(61Om)elevation.Additional accessory kits may be
required for applications above 2000 ft(61Om)elevation,depending on local gas supply conditions.
d. Each heat exchanger tube shall contain multiple dimples for increased heating effectiveness.
4. Optional Stainless Steel Heat Exchanger construction
a. Use energy saving,direct-spark ignition system.
b. Use a redundant main gas valve.
c. Burners shall be of the in-shot type constructed of aluminum-coated steel.
d. All gas piping shall enter the unit cabinet at a single location on side of unit(horizontal plane).
e. The optional stainless steel heat exchanger shall be of the tubular-section type,constructed of a minimum of 20-gauge
type 409 stainless steel.
f. Type 409 stainless steel shall be used in heat exchanger tubes and vestibule plate.
g. Complete stainless steel heat exchanger allows for greater application flexibility.
5. Optional Low NO.Heat Exchanger construction
a. Low NO.reduction shall be provided to reduce nitrous oxide emissions to meet California's Air Quality Management
District(SCAQMD)low-NOx emissions requirement of 40 nanograms per joule or less.
b. Primary tubes and vestibule plates on low NO.units shall be 409 stainless steel.Other components shall be aluminized
steel.
6. Induced draft combustion motor and blower
a. Shall be a direct-drive,single inlet,forward-curved centrifugal type.
b. Shall be made from steel with a corrosion-resistant finish.
c. Shall have permanently lubricated sealed bearings.
d. Shall have inherent thermal overload protection.
e. Shall have an automatic reset feature.
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23 81 19.13.1. Coils
1. Standard Aluminum Fin-Copper Tube Coils:
a. Standard evaporator and condenser coils shall have aluminum lanced plate fins mechanically bonded to seamless
internally grooved copper tubes with all joints brazed.
b. Evaporator coils shall be leak tested to 150 psig, pressure tested to 450 psig,and qualified to UL 1995 burst test at 1775
psig.
c. Condenser coils shall be leak tested to 150 psig,pressure tested to 650 psig,and qualified to UL 1995 burst test at 1980
psig.
2. Optional Pre-coated aluminum-fin condenser coils(3 Phase Models Only):
a. Shall have a durable epoxy-phenolic coating to provide protection in mildly corrosive coastal environments.
b. Coating shall be applied to the aluminum fin stock prior to the fin stamping process to create an inert barrier between the
aluminum fin and copper tube.
c. Epoxy-phenolic barrier shall minimize galvanic action between dissimilar metals.
3. Optional Copper-fin evaporator and condenser coils(3 Phase Models Only):
a. Shall be constructed of copper fins mechanically bonded to copper tubes and copper tube sheets.
b. Galvanized steel tube sheets shall not be acceptable.
c. A polymer strip shall prevent coil assembly from contacting the sheet metal coil pan to minimize potential for galvanic
corrosion between coil and pan.
4. Optional E-coated aluminum-fin evaporator and condenser coils(3 Phase Models Only):
a. Shall have a flexible epoxy polymer coating uniformly applied to all coil surface areas without material bridging between
fins.
b. Coating process shall ensure complete coil encapsulation of tubes,fins and headers.
c. Color shall be high gloss black with gloss per ASTM D523-89.
d. Uniform dry film thickness from 0.8 to 1.2 mil on all surface areas including fin edges.
e. Superior hardness characteristics of 2H per ASTM D3363-92A and cross-hatch adhesion of 413-513 per ASTM D3359-
93.
f. Impact resistance shall be up to 160 in.-lb(ASTM D2794-93).
g. Humidity and water immersion resistance shall be up to minimum 1000 and 250 hours respectively(ASTM D2247-92
and ASTM D870-92).
h. Corrosion durability shall be confirmed through testing to be no less than 1000 hours salt spray per ASTM B117-90.
23 81 19.13.J. Refrigerant Components
1. Refrigerant circuit shall include the following control,safety,and maintenance features:
a. Fixed orifice metering system shall prevent mal-distribution of two-phase refrigerant by including multiple fixed orifice
devices in each refrigeration circuit.Each orifice is to be optimized to the coil circuit it serves.
b. Refrigerant filter drier-Solid core design.
c. Service gauge connections on suction and discharge lines.
d. Pressure gauge access through a specially designed access port in the top panel of the unit.
2. There shall be gauge line access port in the skin of the rooftop,covered by a black,removable plug.
a. The plug shall be easy to remove and replace.
b. When the plug is removed,the gauge access port shall enable maintenance personnel to route their pressure gauge lines.
c. This gauge access port shall facilitate correct and accurate condenser pressure readings by enabling the reading with the
compressor access panel on.
d. The plug shall be made of a leak proof,UV-resistant,composite material.
3. Compressors
a. Unit shall use fully hermetic,scroll compressor for each independent refrigeration circuit.
b. Compressor motors shall be cooled by refrigerant gas passing through motor windings.
c. Compressors shall be internally protected from high discharge temperature conditions.
d. Compressors shall be protected from an over-temperature and over-amperage conditions by an internal,motor overload
device.
e. Compressor shall be factory mounted on rubber grommets.
f. Compressor motors shall have internal line break thermal,current overload and high pressure differential protection.
g. Crankcase heaters shall not be required for normal operating range,unless required by compressor manufacturer due to
Packaged Rooftop Builder 1.39v Page 13 of 23
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refrigerant charge limits.
• 23 81 19.13.K. Filter Section
1. Filters access is specified in the unit cabinet section of this specification.
2. Filters shall be held in place by a pivoting filter tray,facilitating easy removal and installation.
3. Shall consist of factory installed,low velocity,throw-away 2-in.thick fiberglass filters.
4. Filters shall be standard,commercially available sizes.
5. Only one size filter per unit is allowed.
23 81 19.13.L. Evaporator Fan and Motor
1. Evaporator fan motor:
a. Shall have permanently lubricated bearings.
b. Shall have inherent automatic-reset thermal overload protection or circuit breaker.
c. Shall have a maximum continuous bhp rating for continuous duty operation;no safety factors above that rating shall be
required.
2. Direct Drive ECM X13 -Evaporator Fan Standard:
a. Multi-speed motor with easy quick adjustment settings.
b. Blower fan shall be double-inlet type with forward-curved blades.
c. Shall be constructed from steel with a corrosion resistant finish and dynamically ballanced.
3. Belt-driven Evaporator Fan Factory Optional:
a. Belt drive shall include an adjustable pitch motor pulley.
b. Shall use sealed,permanently lubricated ball-bearing type.
c. Blower fan shall be double-inlet type with forward-curved blades.
d. Shall be constructed from steel with a corrosion resistant finish and dynamically balanced.
23 81 19.13.M. Condenser Fans and Motors
1. Condenser fan motors:
a. Shall be a totally enclosed motor.
b. Shall use permanently lubricated bearings.
c. Shall have inherent thermal overload protection with an automatic reset feature.
d. Shall use a shaft-down design on all sizes.
2. Condenser Fans:
a. Shall be a direct-driven propeller type fan.
b. Shall have galvalum blades riveted to corrosion-resistant steel spiders and shall be dynamically balanced.
23 81 19.13.N. Special Features Options and Accessories
1. Integrated EconoMi$er IV, EconoMi$er2, and EconoMi$er X standard leak rate models. (Factory installed on 3 phase
models only.Field installed on all 3 and 1 phase models)
a. Integrated,gear driven opposing modulating blade design type capable of simultaneous economizer and compressor
operation.
b. Independent modules for vertical or horizontal return configuration shall be available.Vertical return modules shall be
available as a factory installed option.
c. Damper blades shall be galvanized steel with composite gears.Plastic or composite blades on intake or return shall not
be acceptable.
d. Shall include all hardware and controls to provide free cooling with outdoor air when temperature and/or humidity are
below setpoints.
e. Shall be equipped with gear driven dampers for both the outdoor ventilation air and the return air for positive air stream
control.
f. Standard leak rate shall be equipped with dampers not to exceed 2%leakage at 1 in.wg pressure differential.
g. Economizer controller on EconoMi$er IV models shall be Honeywell W7212 that provides:
(I.)Combined minimum and DCV maximum damper position potentiometers with compressor staging relay.
(2.)Functions with solid state analog enthalpy or dry bulb changeover control sensing.
(3.)Contain LED indicates for:
when free cooling is available,when module is in DCV mode,when exhaust fan contact is closed.
h. Economizer controller on EconoMi$er X models shall be the Honeywell W7220 that provides:
(1.)2-line LCD interface screen for setup,configuration and troubleshooting.
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(2.)On-board Fault Detection and Diagnostics(FDD)that senses and alerts when the economizer is not operating
properly,per California Title 24.
(3.)Sensor failure loss of communication identification
(4.)Automatic sensor detection
(5.)Capabilities for use with multiple-speed indoor fan systems
(6.)Utilize digital sensors:Dry bulb and Enthalpy
i. Economizer controller on EconoMi$er 2 models with PremierLink shall be 4-20mA design and controlled by the
PremierLink controller.PremierLink does not comply with California Title 24 Fault Detection&Diagnostic(FDD)
requirements.
j. Economizer controller on EconoMi$er 2 models with RTU Open models shall be a 4-20mA design controlled directly
by the RTU Open controller. RTU Open meets California Title 24 Fault Detection&Diagnostic(FDD)requirements.
k. Shall be capable of introducing up to 100%outdoor air.
1. Shall be equipped with a barometric relief damper capable of relieving up to 100%return air and contain seals that meet
ASHRAE 90.1 requirements.
in. Shall be designed to close damper(s)during loss-of-power situations with spring return built into motor.
n. Dry bulb outdoor air temperature sensor shall be provided as standard.Enthalpy sensor is also available on factory
installed only.Outdoor air sensor setpoint shall be adjustable and shall range from 40 to 100°F/4 to 38°C.Additional
sensor options shall be available as accessories.
o. The economizer controller shall also provide control of an accessory power exhaust unit function.Factory set at 100%,
with a range of 0%to 100%.
p. The economizer shall maintain minimum airflow into the building during occupied period and provide design ventilation
rate for full occupancy.
q. Dampers shall be completely closed when the unit is in the unoccupied mode.
r. Economizer controller shall accept a 2-10 Vdc CO2 sensor input for IAQ/DCV control.In this mode,dampers shall
modulate the outdoor air damper to provide ventilation based on the sensor input.
s. Compressor lockout temperature on W7220 is adjustable from-45°F to 80°F,set at a factory default of 32°F.Others
shall open at 35°F(2°C)and closes at 50°F(10°C).
t. Actuator shall be direct coupled to economizer gear.No linkage arms or control rods shall be acceptable.
u. Economizer controller shall provide indications when in free cooling mode,in the DCV mode,or the exhaust fan contact
is closed.
2. Integrated EconoMi$er2, and EconoMi$er X Ultra Low Leak rate models.(Factory installed on 3 phase models only.
Field installed on all 3 and 1 phase models)
a. Integrated,gear driven opposing modulating blade design type capable of simultaneous economizer and compressor
operation.
b. Independent modules for vertical or horizontal return configuration shall be available.Vertical return modules shall be
available as a factory installed option.
c. Damper blades shall be galvanized steel with composite gears.Plastic or composite blades on intake or return shall not
be acceptable.
d. Shall include all hardware and controls to provide free cooling with outdoor air when temperature and/or humidity are
below setpoints.
e. Shall be equipped with gear driven dampers for both the outdoor ventilation air and the return air for positive air stream
control
f. Ultra Low Leak design meets California Title 24 section 140.4 and ASHRAE90.1 requirements for 4 cfm per sq.ft.on
the outside air dampers and 10 cfm per sq.ft.on the return dampers.
g. Economizer controller on EconoMi$er X models shall be the Honeywell W7220 that provides:
(1.)2-line LCD interface screen for setup,configuration and troubleshooting
(2.)On-board Fault Detection and Diagnostics(FDD)that senses and alerts when the economizer is not operating
properly,per California Title 24.
(3.)Sensor failure loss of communication identification
(4.)Automatic sensor detection
(5.)Capabilities for use with multiple-speed indoor fan systems
(6.)Utilize digital sensors:Dry bulb and Enthalpy
h. Economizer controller on EconoMi$er 2 models with RTU Open models shall be a 4-20mA design controlled directly by
Packaged Rooftop Builder 1.39v Page 15 of 23
Guide Specification for RTU
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the RTU Open controller.RTU Open meets California Title 24 Fault Detection&Diagnostic(FDD)requirements.
• i. Shall be capable of introducing up to 100%outdoor air.
j. Shall be equipped with a barometric relief damper capable of relieving up to 100%return air and contain seals that meet
ASHRAE 90.1 requirements.
k. Shall be designed to close damper(s)during loss-of-power situations with spring return built into motor.
I. Dry bulb outdoor air temperature sensor shall be provided as standard.Enthalpy sensor is also available on factory
installed only. Outdoor air sensor setpoint shall be adjustable and shall range from 40 to 100°F/4 to 38°C.Additional
sensor options shall be available as accessories.
in. The economizer controller shall also provide control of an accessory power exhaust unit function.Factory set at 100%,
with a range of 0%to 100%.
n. The economizer shall maintain minimum airflow into the building during occupied period and provide design ventilation
rate for full occupancy.
o. Dampers shall be completely closed when the unit is in the unoccupied mode.
p. Economizer controller shall accept a 2-10 Vdc CO2 sensor input for IAQ/DCV control. In this mode,dampers shall
modulate the outdoor air damper to provide ventilation based on the sensor input.
q. Compressor lockout temperature on W7220 is adjustable from-45°F to 80°F,set at a factory default of 32°F. Others
shall open at 35°F(2°C)and closes at 50°F(10°C).
r. Actuator shall be direct coupled to economizer gear.No linkage arms or control rods shall be acceptable.
s. Economizer controller shall provide indications when in free cooling mode,in the DCV mode,or the exhaust fan contact
is closed.
3. Two-Position Damper(Factory installed on 3 Phase Models Only.Field installed on all 3 and 1 Phase Models)
a. Damper shall be a Two-Position Damper.Damper travel shall be from the full closed position to the field adjustable%-
open setpoint.
b. Damper shall include adjustable damper travel from 25%to 100%(full open).
c. Damper shall include single or dual blade,gear driven dampers and actuator motor.
d. Actuator shall be direct coupled to damper gear.No linkage arms or control rods shall be acceptable.
e. Damper will admit up to 100%outdoor air for applicable rooftop units.
f. Damper shall close upon indoor(evaporator)fan shutoff and/or loss of power.
g. The damper actuator shall plug into the rooftop unit's wiring harness plug.No hard wiring shall be required.
h. Outside air hood shall include aluminum water entrainment filter.
4. Manual damper
a. Manual damper package shall consist of damper,air inlet screen,and rain hood which can be preset to admit up to 25 or
50%outdoor air for year round ventilation.
5. Humidi-MiZer Adaptive Dehumidification System(3 Phase Models Only):
a. The Humidi-MiZer Adaptive Dehumidification System shall be factory installed and shall provide greater
dehumidification of the occupied space by two modes of dehumidification operations in addition to its normal design
cooling mode:
(I.)Subcooling mode further sub cools the hot liquid refrigerant leaving the condenser coil when both temperature and
humidity in the space are not satisfied.
(2.)Hot gas reheat mode shall mix a portion of the hot gas from the discharge of the compressor with the hot liquid
refrigerant leaving the condenser coil to create a two-phase heat transfer in the system,resulting in a neutral leaving
air temperature when only humidity in the space is not satisfied.
(3.)Includes head pressure controller.
6. Head Pressure Control Package
a. Controller shall control coil head pressure by condenser fan speed modulation or condenser fan cycling and wind baffles.
b. Shall consist of solid-state control and condenser coil temperature sensor to maintain condensing temperature between
90°F(32°C)and 110°F(43°C)at outdoor ambient temperatures down to-20°F(-29°C).
7. Propane Conversion Kit
a. Package shall contain all the necessary hardware and instructions to convert a standard natural gas unit for use with
liquefied propane,up to 2000 ft(61Om)elevation.
b. Additional accessory kits maybe required for applications above 2000 ft(610m)elevation.
8. Flue Shield
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a. Flue shield shall provide protection from the hot sides of the gas flue hood.
9. Condenser Coil Hail Guard Assembly (Factory installed on 3 Phase Models Only. Field installed on all 3 and 1 Phase
Models)
a. Shall protect against damage from hail.
b. Shall be either hood style or louvered.
10. Unit-Mounted,Non-Fused Disconnect Switch(Available on units with MOCP's of 80 amps or less):
a. Switch shall be factory installed, internally mounted.
b. National Electric Code(NEC)and UL approved non-fused switch shall provide unit power shutoff.
c. Shall be accessible from outside the unit.
d. Shall provide local shutdown and lockout capability.
1 l. Convenience Outlet:
a. Powered convenience outlet.(3 Phase Models Only)
(L)Outlet shall be powered from main line power to the rooftop unit.
(2.)Outlet shall be powered from line side or load side of disconnect by installing contractor,as required by code.If
outlet is powered from load side of disconnect,unit electrical ratings shall be UL certified and rated for additional
outlet amperage.
(3.)Outlet shall be factory installed and internally mounted with easily accessible 115-v female receptacle.
(4.)Outlet shall include 15 amp GFI receptacles with independent fuse protection.
(5.)Voltage required to operate convenience outlet shall be provided by a factory installed step-down transformer.
(6.)Outlet shall be accessible from outside the unit.
(7.)Outlet shall include a field installed"Wet in Use"cover.
b. Non-Powered convenience outlet.
(1.)Outlet shall be powered from a separate 115/120v power source.
(2.)A transformer shall not be included.
(3.)Outlet shall be factory installed and internally mounted with easily accessible 115-v female receptacle.
(4.)Outlet shall include 15 amp GFI receptacles with independent fuse protection.
(5.)Outlet shall be accessible from outside the unit.
(6.)Outlet shall include a field installed"Wet in Use"cover.
12. Flue Discharge Deflector:
a. Flue discharge deflector shall direct unit exhaust vertically instead of horizontally.
b. Deflector shall be defined as a"natural draft"device by the National Fuel and Gas(NFG)code.
13. Thru-the-Base Connectors:
a. Kits shall provide connectors to permit gas and electrical connections to be brought to the unit through the unit basepan.
b. Minimum of four connection locations per unit.
14. Propeller Power Exhaust:
a. Power exhaust shall be used in conjunction with an integrated economizer.
b. Independent modules for vertical or horizontal return configurations shall be available.
c. Horizontal power exhaust is shall be mounted in return ductwork.
d. Power exhaust shall be controlled by economizer controller operation.Exhaust fans shall be energized when dampers
open past the 0-100%adjustable setpoint on the economizer control.
15. Roof Curbs(Vertical):
a. Full perimeter roof curb with exhaust capability providing separate air streams for energy recovery from the exhaust air
without supply air contamination.
b. Formed galvanized steel with wood nailer strip and shall be capable of supporting entire unit weight.
c. Permits installation and securing of ductwork to curb prior to mounting unit on the curb.
16. High Altitude Gas Conversion Kit:
a. Package shall contain all the necessary hardware and instructions to convert a standard natural gas unit to operate from
2000-7000 ft(610 to 2134m)elevation with natural gas or from 0-7000 ft(90-2134m)elevation with liquefied propane.
17. Outdoor Air Enthalpy Sensor:
a. The outdoor air enthalpy sensor shall be used to provide single enthalpy control.When used in conjunction with a return
air enthalpy sensor,the unit will provide differential enthalpy control.The sensor allows the unit to determine if outside
air is suitable for free cooling.
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18. Return Air Enthalpy Sensor:
a. The return air enthalpy sensor shall be used in conjunction with an outdoor air enthalpy sensor to provide differential
enthalpy control.
19. Indoor Air Quality(CO2)Sensor:
a. Shall be able to provide demand ventilation indoor air quality(IAQ)control.
b. The IAQ sensor shall be available in duct mount,wall mount,or wall mount with LED display.The setpoint shall have
adjustment capability.
20. Smoke detectors(factory installed only):
a. Shall be a Four-Wire Controller and Detector.
b. Shall be environmental compensated with differential sensing for reliable,stable,and drift-free sensitivity.
c. Shall use magnet-activated test/reset sensor switches.
d. Shall have tool-less connection terminal access.
e. Shall have a recessed momentary switch for testing and resetting the detector.
f. Controller shall include:
(L)One set of normally open alarm initiation contacts for connection to an initiating device circuit on a fire alarm
control panel.
(2.)Two Form-C auxiliary alarm relays for interface with rooftop unit or other equipment.
(3.)One Form-C supervision(trouble)relay to control the operation of the Trouble LED on a remote test/reset station.
(4.)Capable of direct connection to two individual detector modules.
(5.)Can be wired to up to 14 other duct smoke detectors for multiple fan shutdown applications
21. Winter start kit
a. Shall contain a bypass device around the low pressure switch.
b. Shall be required when mechanical cooling is required down to 25°F(-4°C).
c. Shall not be required to operate on an economizer when below an outdoor ambient of 40°F(4°C).
22. Time Guard
a. Shall prevent compressor short-cycling by providing a 5-minute delay(±2 minutes)before restarting a compressor after
shutdown for any reason.
b. One device shall be required per compressor.
23. Hinged Access Panels
a. Shall provide easy access through integrated quarter turn latches.
b. Shall be on major panels of: filter,control box,fan motor,and compressor.
Packaged Rooftop Builder 1.39v Page 18 of 23
Guide Specification for RTU
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Copyright 2014 Carrier Corp.•7310 W.Morris St.•Indianapolis,IN 46231 Edition Date.11/14
Packaged Rooftop Builder 1.39v Page 19 of 23
Guide Specification for RTU
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Catalog No: GS-48KC-4-6-01 PD
Replaces:New
Packaged Rooftop Builder 1.39v Page 20 of 23
Guide Specification for RTU
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Manufacturer reserves the right to change,at any time,specifications and designs without notice and without obligations.
Packaged Rooftop Builder 1.39v Page 21 of 23
Unit Feature Sheet for RTU
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WeatherMaker — 48KC
PACKAGED ROOFTOP GAS HEATING/ELECTRIC COOLING UNITS-14 SEER
3,4,5 TONS
STANDARD FEATURES INCLUDE:
• Puron(R-410A)HFC refrigerant
• Meetsandex eds ASHRAE90.1energyeffkiencylewis
•
Scroll compressors with internal line break and overload protection
• Single-stagecoolingcapackycenbul
• SEER'supto14.0,EER'supto12.0
•Acutrol—refrgerantmeterimg system
• Exclusive noncorrosive composite condensate pan in accordance with
ASHRAE Standard 62,sloping design,side orcenterdran
• Standard coaling operation up to 115'F(46'C)and dawn to 40'F(4'C)
-down to 25'F(4'C)with winter start M.
• Pre-pairtedexteriorpanelsand primer-coated interior panels tested to
500 hours salt spray protection
•
Fully insulated cabinet
• Exckrsive IGCwbd-statecontnolforon-boanidiagnestsvvft LED
error code designation bumercontrol logic and energy saving indoor
fan motor delay
rn„ • Low NOx models that meet CaiFomia Ai Quality Management
• Induced draftgasheat combustion design
COM.. • Redundant gas valves with up to two stages of heating
• Law pressure and high pressure switch protected.
I&AINTENANCE FEATURES:
•Access panels with easygrp handles
• Innovative easy starting,no-strip screws on unit access panels
• Two-cfi disposable return aititers and Toetaess filter access door
WEATHERMAKER SERIES • Direct Drive-ECM ndoormotorisstandard*0optional belt drive
WeatherMaker 48KC (14-SEER) units are one-piece gas •Te�nalboard facilitating sirptesafety circuit troubleshooting and
heating,electric cooling units that are pre-wired and charged sinpilied control box arrangement
with Puron(R-410)refrigerant. They arefactory tested in both • Exclusive lGCsolid-state control for onboard diagnosticswithLED
heating and cooling modes,and rated In accordancewith AHRI emoreode designation,bumercontrot logic and energysaving indoor
Standards 210240. WeatherMaker units are designed in fan motor delay.
accordance with UL Standard 1995, and listed by the
Underwriters'Laboratories. INSTALLATION FEATURES:
•Thru-the-bottom powerentrycapabity
• Single pont gas and electric connections
• Ful perkneter base rail with bult-in rigging adapters and fork slots
Approved and certified by: • Field convertible fmmvertical to hod nontelairflow
STANDARD WARRANTY:
• 10-yearheat exchanger-l5-yearsteiless steel option
u..a•.win o.r+e • 5-yearcompreswr
usTy,r,•.,� • 1-yearparts
'^r^�r'"''• • Many optional upgrades also available
OPTIONS INCLUDE BUT ARE NOT LMrED TO:
"••a"�i°'"r•'• • Prernied-ink and RTU Open Multi Protocol DDC Controls
• Supply and Return Ar Smoke Detectors,high static motors
• Louvered condenser-col guards
• Disconnect switch and convenience outlet options
• Stainless Steel heat exchangeroption
Certified to ISO 9D01 • Corrosion resistant coil mating.
• Kgh static motor options
• Patented Humin-MZee adaptive dehumidification system.This option
also includes Motormester I controls
• Finged access panels
• Integrated econcrii ersystem.Standard and Ultra Low Leakversions
For a complete Est of options and accessories referto the Product Data
Catalog forthis und.
Packaged Rooftop Builder 1.39v Page 22 of 23
SPEC SHEET FOR RTU
PROJECT:-UNTITLED3 12/16/2015
PREPARED BY: 08:59AM
f
PACKAGED ROOFTOP BUILDER 1.39V PAGE 23 OF 23