Matthews Main Post Office HVAC Installation and Repair Project

Matthews Main Post Office HVAC Installation and Repair Project 11/15/2011 The following report includes: submittal documents, project summary, product sales info, efficiency data, product catalog link, before and after pictures, and commissioning reports. The intent of this report is to provide a brief synopsis of the project, along with important technical and operational information.

Table of Contents: Table of Contents:... 2 Project Summary:... 3 Site Photos:... 4 Before and After Photos:... 5 Efficiency Data with Catalog Link:... 7 Commissioning Worksheet:... 8 Product Summary:... 10 Submittal Data:... 12 Corporate Office: P.O. Box 73026 Richmond, VA 23235 (919) 682-2200 (804) 323-4455 (804) 267-1893 fax www.ironhorsemechanical.net 2

Project Summary: Two 7 ½-TON York Gas Pack Rooftop Units (RTU-1B and RTU-2B) were replaced with Carrier 48HC High Efficiency Packaged Gas/Electric Rooftop Units. The new units have following features and benefits: Medium gas heat High efficiency, 12.0 EER Dual circuit Downflow configuration 7 1/2 ton nominal cooling capacity 208-230v-3ph Vertical economizer with barometric relief (factory installed) Curb adapter (field installed) Powered convenience outlet, GFCI (factory installed) Additional product information is provided in the Product Summary and Submittal Data sections of this report. This project also provided for certain temporary and permanent repairs to RTU- 1A, RTU-1B, RTU-2A, RTU-2B, RTU-3, RTU-3B, RTU-4A, RTU-5, RTU-6A, RTU-7A, and RTU-8. Further details of the installation and repair work are provided in the work scope section of the JOC Contract and our project proposal. 3

Site Photos: Matthews Main Post Office 301 E. John St. Matthews, NC 28105-7957 4

Before Pictures: Before Picture RTU 1B York Gas Pack Rooftop Unit Model #D4CG090N13025A Serial #NNGM158971 Before Picture RTU 2B York Gas Pack Rooftop Units Model #D4CG090N13025A Serial #NBHM015773 5

After Pictures: After Picture RTU 1B Carrier Gas Pack Rooftop Units Model #48HCED08A2A5A0B2A0 Serial #4411G50399 After Picture RTU 2B Carrier Gas Pack Rooftop Units Model #48HCED08A2A5A0B2A0 Serial #4411G50400 6

Matthews Main Office Efficiency Data: N= New O= Old QTY Serial Number Make & Model Number Cooling Capacity Tons Cooling Capacity MBH Cooling EER Cooling SEER/IEER /IPLV Heating Input MBH/ Stage 1 Heating Input MBH/ Stage 2 Heating Output MBH/ Stage 1 Heating Output MBH/ Stage 2 Heating AFUE% Heating Steady State Efficiency% Ref. Age Economizer (Yes/No) N 1 4411G50399 N 1 4411G50400 Carrier 48HCED082A5-0B2A0 Carrier 48HCED082A5-0B2A0 7.5 89 12.00 13.00 120 180 98 148 N/A 82% R410A 2011 Yes 7.5 89 12.00 13.00 120 180 98 148 N/A 82% R410A 2011 Yes O 1 NNGM158977 York D4CG090N13025A 7.5 R22 1998 O 1 NBHM015773 York D4CG090N13025A 7.5 R22 1998 A product catalog is available using the following link: http://www.docs.hvacpartners.com/idc/groups/public/documents/techlit/48hc-08pd.pdf 7

Commissioning Worksheets: Job Name Matthews Main Office Lead Technician: Jim Whinnie EQUIPMENT STARTUP CHECKLIST/COMMISSIONING REPORT Date(s) of Installation Outside Temp and Weather Conditions November 15, 2011 67 Additional Technician(s): Jerry Burden Make/Model # of new unit Serial # of new unit PRE START-UP TASKS Before starting changeout, verify correct voltage and phase of new equip. Verify Installation and Ops Manuals are present and being strictly followed. Check electrical conn. for tightness - ohm out high voltage wiring to verify insulation Check blower wheel tightness and alignment. Verify pulley alignment and belt tightness. Check unit for level. Verify the condensate lines is the correct size and installed per mfgr specs. Verhify the curb/curb adapter is sealed properly and water tight. Verify the unit is properly grounded and secured. Check that the unit has filters installed with no gaps between. START-UP TASKS UNIT # 1 Carrier 48HCED08A2A5A0B2A0 4411G50399 Voltage Phase 208/230 3 UNIT # 1 UNIT # 2 Carrier 48HCED08A2A5A0B2A0 4411G50400 Voltage Phase 208/230 3 UNIT # 2 Verify proper rotation Supply voltage (L1-L2) 213 213 Supply voltage (L1-L3) 213 213 Supply voltage (L2-L3) Actual compressor amps #1 Actual compressor amps #2 212 213 L1: 10.9 L2: 11.1 L3:11.1 L1: 10.8 L2: 10.9 L3: 11.0 L1: 10.8 L2: 10.9 L3:10.9 L1: 10.7 L2: 10.8 L3: 10.9 Compressor rated Amps #1 13.6 13.6 Compressor rated Amps #2 13.6 13.6 Actual fan amps Cond #1 1.1 1.0 Actual fan amps Cond #2 1.0 1.0 Rated fan amps Cond #1 1.5 1.9 Rated fan amps Cond #2 1.5 1.5 8

START-UP TASKS (Cont.) UNIT # 1 UNIT # 2 Actual fan amps Evap 4.0 5.2 Rated fan amps Evap 5.2 4.0 Pressures 1 Pressures 2 Temperatures Temp differential across coil (fully loaded) 22 22 Superheat 1 Superheat 2 Suct 1 140 Suct 2 135 Ret Air 72 At Coil 16 At Coil 17 Disch 1 270 Disch 2 265 Sup Air 50 At Compressor 17 At Compressor 19 T-Stat properly mounted and verified for proper and accurate operation? Unit tested under full load conditions in heating and cooling modes? Verify unit is balanced Label new unit and make ready for final inspection Clean job site and remove all materials and debris Turnover to Postmaster or OIC (manuals, training, etc.) Suct 1 139 Suct 2 139 Ret Air 72 At Coil 16 At Coil 17 Disch 1 268 Disch 2 268 Sup Air 50 At Compressor 17 At Compressor 19 9

Product Summary: 48HC WEATHERMASTER Single-Package Rooftop High Efficiency Gas Heating/Electric Cooling Units 3 to 25 Nominal Tons 48HC WEATHERMASTER rooftop unit were designed by customers for customers. With a gauge plug, centralized control center, plug & play accessory board, "no-strip screw" collars, and handled access panels, we ve made the unit easy to install, easy to maintain, and easy to use. Units are pre-wired and pre-charged with environmentally sound Puron (R-410A) refrigerant at the factory. The units are factory tested in both heating and cooling modes. Performance Features Puron (R-410A) HFC refrigerant ASHRAE 90.1 and Energy Star compliant Single-stage capacity control (sizes 04 to 07) Two-stage cooling capacity control (sizes 08 to 28) SEERs up to 15.6 EERs up to 12.2 IEERs up to 13.0 Exclusive non-corrosive composite condensate pan in accordance with ASHRAE 62 Standard, sloping design; side or center drain Gas efficiencies up to 82% Induced draft combustion Single and multi-state heating Pre-painted exterior panels and primer-coated interior panels tested to 500 hours salt spray protection TXV refrigerant metering device on each circuit with removable power element Fully insulated cabinet Enhanced copper tube and aluminum fin designed condenser and evaporator coils. Special coated coils also available Exclusive IGC solid-state control for on-board diagnostics with LED error code designation, burner control logic and energy saving indoor fan motor delay Dedicated 3-5 ton "Low NOx" models available that meet California Air Quality Management NOx requirement of 40 nangram/joule or ess. Low NOx models include stainless steel heat exchangers. Stanadrd cooling operating range up to 125 F (52 C) and down to 35 F (-2 C). Low ambient controllers can bring cooling operation down to -20 F (-29 C) Rated in accordance with ARI Standards 210/240 (sizes 04 to 06 ) and 340/360 (sizes 07 to 28) Designed in accordance with Underwriters Laboratories Standard 1995 Listed by UL and UL, Canada, or ETL 10

Maintenance Features Access panels with easy grip handles Innovative, easy starting, no-strip screw feature on unit access panels Two-inch disposable return air filters Tool-less filter access door Optional hinged access panels also available Belt drive evaporator-fan motor and pulley combinations available on all three phase models to meet any application Electric Drive x13 (5 speed/torque) motor on 04 to 06 models New terminal board facilitating simple safety circuit troubleshooting and simplified control box arrangement Installation Features Field convertible from vertical to horizontal airflow for slab mounting (sizes 04 to 14) Provisions for thru-the-bottom power entry capability as standard Single point gas and electric connections Full perimeter base rail with built-in rigging adapters and fork truck slots Dedicated vertical and horizontal airflow models available (factory option on size 17 to 28 units) Reliability Features Scroll compressors with internal line-break overload protection 24-volt control circuit protected with resettable circuit breaker Permanently lubricated evaporator-fan motor Totally enclosed condenser motors with permanently lubricated bearings Low pressure and high-pressure switch protection Exclusive IGC anti-cycle protection for gas heat operation Solid-state electronic direct spark ignition system Flame roll-out safety protector Liquid line filter drier as standard Standard Limited Warranty 10 years parts only heat exchanger - aluminized 15 years parts only heat exchanger - stainless steel 5 years parts only compressor One year parts only on all other parts Extended warranty packages available 11

SUBMITTAL Project MATTHEWS MAIN OFFICE 12

RTU-1 AND RTU-2 3 Unit Report 4 Certified Drawing 5 Performance Summary 7 Unit Feature Sheet 10 13

RTU-1 AND RTU-2 Tag Cover Sheet Unit Report Certified Drawing Performance Report Unit Feature Sheet 14

Unit Parameters Unit Model: 48HCED08A2A5-0B2A0 Unit Size: 08 (7.5 Tons) Volts-Phase-Hertz: 208-3-60 Heating Type: Gas Duct Cfg: Vertical Supply / Vertical Return Medium Heat Two stage cooling models Dimensions (ft. in.) & Weight (lb.) *** Unit Length: 7' 4.125'' Unit Width: 4' 11.5'' Unit Height: 4' 1.375'' *** Weights and Dimensions are approximate. Weight does not include roof curbs, unit packaging, field installed accessories or factory installed options. Approximate dimensions are provided primarily for shipping purposes. For exact dimensions and weights, refer to appropriate product data catalog. Total Operating Weight: 1065 lb Unit Configuration Medium Static Option - Belt Drive Al/Cu - Al/Cu Electro-mechanical controls Temperature Economizer w/ Barometric Relief Powered Convenience Outlet Standard Packaging Warranty Information 1-Year parts 5-Year compressor parts 10-Year heat exchanger - Aluminized No optional warranties were selected. NOTE: Please see Warranty Catalog 500-089 for explanation of policies and ordering methods. Ordering Information Part Number Description Quantity 48HCED08A2A5-0B2A0 Rooftop Unit 2 Base Unit Medium Static Option - Belt Drive Al/Cu - Al/Cu Powered Convenience Outlet Standard Packaging Electromechanical control, Temperature economizer with barometric relief 15

NOTES: 1. DIMEiSIOiS ARE IN INCHES, DIMENSIONS IN I 1 ARE IN 1LlliETERS 1 CEN1ER OF GRAVITY 3. DJRECTJON OF A1R FLOW 48HC-A01 UNIT 41 j 48HC-008 48HC-009 49 49 111531 ' H 3? 15 1 40-J/S ---., 110151 1351 2 DIA KNOC"OOT 314 (511 DIA ESS 118 111I CIA ECOIIOillER HOOD IO PTl ONAU 10-3/i 1527 I 12 "-14 "-14 " 1511 NSATE.. ṘETUṘN AIR for ITH KlTS: 01 CRBT,0 - CRBT 01 - BWPAH CRBT 08,09 - FILTER ACC ESS PIINEL!TOOL-LESSI INDOOR COIL ACCESS PIINEL CONDENSER COll t 40+3/8.. I1011] SUPPL'f AIR _1 1 118" 1 1 3/4 ' 144.4 1 11" 118" 18. 041 J /4" 314" 1001 & 002 PWVIDES 3/4 " FPT T RU FL/l.NGE SIZE: 2" THRU-THE-BASE CHART IFIOPl FOR "TH RU -THE-BAS EPAN" FACTOR!OPTIO N, FIHJNGS FOR ONL T I. Y.!1 AR E PROVIDED. " FOR BELOLISTED MODELS, A FIELD SUPPLIED I 12" ADAPTER IS REQUIRED BETWEEN BA SE PAN FITT ING MD GAS VALVE: 46HCD, E, S, R-0 J 48HCD,S 08 48f+!:D,S - 09.. CONDENSER COI L OPTIONAL FACTORY I NSTALLED CONVENIENCE OUTLET -.. 3 314 r- (OSJ >-------- 5! 112 ------1 J CO N TROL BOX ACCESS PAiEL OPTIONAL9 FACTCH! INSTALLED DISCONNECT HAN OLE---n '" il INDOOR BLOWER ACCESS F [_ fahdle IT 00 "L='J' I 'L='J' 00 1-51B- L l -3/!! 11510I Ow UTSIDE 16

IT I. LBS. -A01 I6 318 34 61 19 718 I 5051 915 419 9 156.1 41 518 11081] 34 1 915 10 190 9 34 1 /8 LBS. " * STAN DA R D U W mg HT 1S W ITH LOW GA S HE AT AND Wl!HOU T PACK AGI NG. FOR OTHER OPHONS AH D AC C ESSORI ES, R EFER TO TH E P ROD UCT DATA C WLOG COR NE R A CORNE R 8 COR NER D COR N ER C -... CJ 1 C. = n = NEW 48HC 08-12 SINGL E ZONE ELECTRICAL L:::::::j L:::::::j 00 17

Part Number:48HCED08A2A5-0B2A0 ARI EER: 12.00 IEER: 13.0 Base Unit Dimensions Unit Length: Unit Width: Unit Height: Operating Weight Base Unit Weight: Medium Heat: Medium Static Option - Belt Drive: Temperature Economizer w/ Barometric Relief: Powered Convenience Outlet: Total Operating Weight: 88.1 in 59.5 in 49.4 in 925 lb 15 lb 15 lb 75 lb 35 lb 1065 lb Unit Voltage-Phase-Hertz: 208-3-60 Air Discharge: Vertical Fan Drive Type: Belt Actual Airflow: 3000 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/lb Evaporator Leaving Air DB: 57.7 F Evaporator Leaving Air WB: 57.2 F Evaporator Leaving Air Enthalpy: 24.53 BTU/lb Gross Cooling Capacity: 93.30 MBH Gross Sensible Capacity: 72.19 MBH Compressor Power Input: 6.24 kw Coil Bypass Factor: 0.198 Heating Performance Heating Airflow: Entering Air Temp: Leaving Air Temp: Gas Input Capacity: Gas Heating Capacity: Temperature Rise: NOTE: 3000 CFM 70.0 F 115.7 F 120.0 / 180.0 MBH 148.00 MBH 45.7 F Second Stage Supply Fan External Static Pressure: 0.50 in wg Options / Accessories Static Pressure EconoMi$erIV / EconoMi$er2: 0.11 in wg Total External Static: 0.61 in wg Fan RPM: 759 Fan Power: 1.17 BHP NOTE: Selected IFM RPM Range: 690-936 Electrical Data Minimum Voltage: 187 Maximum Voltage: 253 18

Compressor #1 RLA: 13.6 Compressor #1 LRA: 83 19

Compressor #2 RLA: 13.6 Compressor #2 LRA: 83 Outdoor Fan Motor Qty: 2 Outdoor Fan FLA (ea): 1.5 Indoor Fan Motor Type: MED Indoor Fan Motor FLA: 5.2 Combustion Fan Motor FLA (ea): 0.48 Power Supply MCA: 43.6 Power Supply MOCP (Fuse or HACR): 50 Min. Unit Disconnect FLA: 46 Min. Unit Disconnect LRA: 207 Electrical Convenience Outlet: Yes NOTE: Convenience outlet must be field connected to the line/load side of the unit disconnect per local code. Acoustics Sound Power Levels, db re 10E-12 Watts Discharge Inlet Outdoor 63 Hz 96.6 93.8 90.6 125 Hz 90.7 84.0 84.3 250 Hz 75.1 67.8 80.2 500 Hz 68.9 63.9 79.3 1000 Hz 64.0 61.2 77.1 2000 Hz 62.1 56.3 72.2 4000 Hz 64.8 55.6 67.4 8000 Hz 65.1 55.0 63.7 A-Weighted 77.7 72.1 82.0 Advanced Acoustics 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 Frequency, Hz 63 125 250 500 1k 2k 4k 8k Overall 1. Sound Power Levels at Unit's Acoustic Center, Lw 90.6 84.3 80.2 79.3 77.1 72.2 67.4 63.7 92.3 Lw 2. A-Weighted Sound Power Levels at Unit's Acoustic Center, LwA 64.4 68.2 71.6 76.1 77.1 73.4 68.4 62.6 81.7 LwA 3. Sound Pressure Levels at Specific Distance from Unit, Lp 58.2 51.9 47.8 46.9 44.7 39.8 35.0 31.3 59.9 Lp 4. A-Weighted Sound Pressure Levels at Specific Distance from Unit, LpA 58.2 51.9 47.8 46.9 44.7 39.8 35.0 31.3 59.9 LpA 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 20

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. 21

Static Pressure (in. wg.) Matthews Main Post Office HVAC Installation and Repair Project 2.0 FanCurve 1200RPM 1.8 1100RPM 1.6 1.4 1000RPM 1.2 900RPM 3.70BHP 1.0 800RPM SC 0.8 0.6 700RPM 600RPM RP 3.00BHP 0.4 500RPM 0.2 0.0 400RPM 0.50BHP 0.75BHP 1.00BHP 1.50BHP 2.00BHP 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 Airflow(CFM-thousands) RPM=759BHP=1.17MaximumRPM=1084MaximumHP=3.70 Note:Pleasecontactapplicationengineeringforselectionsoutsidetheshadedregion. SC-SystemCurve RP-RatedPoint 22

Unit Feature Sheet for RTU-1 AND RTU-2 Project MATTHEVVS MAIN OFFICE Preoared Bv: 10/11/2011 0355PM e WeatherMaster - 48HC PACKAGED ROOFTOP GAS HEATING/ELECTRIC COOLING UNI TS 3,4,5,6,7.5,8.5,10 and12.5 TONS -- Optional Louvered Hail Gua rd Shown PUron. STANDARD FEATURES INCLUDE: Puron (R-41O.A.)HFC refrigerant charged ASHRAE 90.1compliant and Energy Sfar qualified Scroll compressors with internalline break and overload protection Single-stage cooling capadty controlon all04-07 models Two-stage coolingcapac1ty controlon 08-14models. SEER's up to 15.6.EER's up to 13.0 and leer's up to 13.0 TXV meteringdevice on each independent circu 04-06 models use X-13 (5 Speed/Torque)Direct Drive Motor standard Belt drive f an and pulley combinations - allthree phasemodels Exc1us1ve non-corrosive compose condensate pan1n accordance wh ASHRA.E Standard 62,slopingdesign,side or center dram Standard coolingoperationto 125 F (52.C)to 35 F (2 C) Units use high pertormance copper tubei aluminumiln condenser andevaporator coils Pre-painted exterior panels and primer-coated interior panels testedto 500 hours salt spray protection Fully insulated cabinet Exclusive IGC solid-state controlf or on-boarddiagnostics with LED error code designationburner controllogic andenergy saving indoor f an motor delav LowNOx models that meet California Air Quality Management Induced draft gas heat combustion design Redundant gas valves with up to two stages of heating Low pressure and high pressure switch protected. MAINTENANCE FEATURES: Accesspanels with e.asy grip handles. 23

WEATHERMASTER SERIES WeatherMaster (48HC) units are high efficiency, single packaged gas heating,electriccoolinguns that are pre-wired and charged with Puron:l> (R-410)refngerant. They are f acto I)' tested in both heating and cooling modes, and rated in accordance wh AHRIStandards 210/240 (04-06 sizes) and 340/360 (07-14sizes). WeatherMaster units are designed in accordance with UL Standard 1995, and listed by the UndeiWriters'Laboratories. Ullofd... TU...IIdic.llllloll... IN... Certified to ISO 9001 24

lnnovat1ve easy startng,no-stnp screws on unit access panels Two-inch disposable returnairtmers andtooless fmer access Newterminalboardf acilitatingsimple safety circu troubleshooting andsimplifiedcontrolbox arrangement Exclusive IGC solid-state controlf or on-boarddiagnostics with LED error code designation,burner controllogic and energy sav1ng 1ndoorf an motor delay. INSTALLATIONFEATURES: Thru-the-bottom power entry capability S1ngle po nt gas andelectnc connect1ons Fullperimeter base railwith built-in rigging adapters andf ork slots Convertiblefrom verticalto horizontalairtlowf or slabmounting STANDARD PARTS WARRANTY: 10-year heat exchanger-15-year stainless steeloption 5-year compressor 1-year parts Many optionalupgrades also available OPTIONS INCLUDE BUT ARE NOTLIMITED TO: Premierlink'" andmultiprotocoldirect OigalControls (DOC) Supply and ReturnAir Smoke Detectors,highstatic motors Louveredcondenser coilguards andcoilcoating options Economizer,disconnect and convenience outlefoptions Stainless Steelheatexchanger (standard with Low Nox) Hinged access panels Humidi-MiZer dehumidificationsystemon 04 to 12 models. 25