MID MICHIGAN COMMUNITY COLLEGE HARRISON CAMPUS Harrison, Michigan 2015 MASTER PLAN September 30, 2015 PBA Project No. 2015.0140.00 PETER BASSO ASSOCIATES INC. CONSULTING ENGINEERS 5145 LIVERNOIS ROAD, SUITE 100 TROY, MICHIGAN 48098
TABLE OF CONTENTS TAB MECHANICAL SYSTEM REPLACEMENT PRIORITY SUMMARY MID MICHIGAN COMMUNITY COLLEGE HARRISON CAMPUS MAP ALLIED HEALTH ADDITION 1 MECHANICAL WRITE-UP DESCRIPTIONS ELECTRICAL WRITE-UP DESCRIPTIONS MECHANICAL BUILDING COMPONENT LIFE EXPECTANCIES ELECTRICAL BUILDING COMPONENT LIFE EXPECTANCIES AUTOMOTIVE TECHNOLOGY ADDITION 2 MECHANICAL WRITE-UP DESCRIPTIONS ELECTRICAL WRITE-UP DESCRIPTIONS MECHANICAL BUILDING COMPONENT LIFE EXPECTANCIES ELECTRICAL BUILDING COMPONENT LIFE EXPECTANCIES FOOD SERVICES ADDITION 3 MECHANICAL WRITE-UP DESCRIPTIONS ELECTRICAL WRITE-UP DESCRIPTIONS MECHANICAL BUILDING COMPONENT LIFE EXPECTANCIES ELECTRICAL BUILDING COMPONENT LIFE EXPECTANCIES GOLDBURG 4 GOLDBURG MECHANICAL WRITE-UP DESCRIPTIONS GOLDBURG ELECTRICAL WRITE-UP DESCRIPTIONS GOLDBURG MECHANICAL BUILDING COMPONENT LIFE EXPECTANCIES GOLDBURG ELECTRICAL BUILDING COMPONENT LIFE EXPECTANCIES
INSTRUCTIONAL CLASSROOM LABORATORY EAST ADDITION 5 MECHANICAL WRITE-UP DESCRIPTIONS ELECTRICAL WRITE-UP DESCRIPTIONS MECHANICAL BUILDING COMPONENT LIFE EXPECTANCIES ELECTRICAL BUILDING COMPONENT LIFE EXPECTANCIES INSTRUCTIONAL FACILITY WEST ADDITION 6 MECHANICAL WRITE-UP DESCRIPTIONS ELECTRICAL WRITE-UP DESCRIPTIONS MECHANICAL BUILDING COMPONENT LIFE EXPECTANCIES ELECTRICAL BUILDING COMPONENT LIFE EXPECTANCIES S.O.A.R ADDITION 7 S.O.A.R. MECHANICAL WRITE-UP DESCRIPTIONS S.O.A.R. ELECTRICAL WRITE-UP DESCRIPTIONS S.O.A.R. MECHANICAL BUILDING COMPONENT LIFE EXPECTANCIES S.O.A.R. ELECTRICAL BUILDING COMPONENT LIFE EXPECTANCIES TECHNOLOGY TRADES CENTER 8 MECHANICAL WRITE-UP DESCRIPTIONS ELECTRICAL WRITE-UP DESCRIPTIONS MECHANICAL BUILDING COMPONENT LIFE EXPECTANCIES ELECTRICAL BUILDING COMPONENT LIFE EXPECTANCIES H-TECH 9 MECHANICAL WRITE-UP DESCRIPTIONS ELECTRICAL WRITE-UP DESCRIPTIONS MECHANICAL BUILDING COMPONENT LIFE EXPECTANCIES ELECTRICAL BUILDING COMPONENT LIFE EXPECTANCIES
RADTECH 10 MECHANICAL WRITE-UP DESCRIPTIONS ELECTRICAL WRITE-UP DESCRIPTIONS MECHANICAL BUILDING COMPONENT LIFE EXPECTANCIES ELECTRICAL BUILDING COMPONENT LIFE EXPECTANCIES MAINTENANCE BUILDINGS 11 ELECTRICAL WRITE-UP DESCRIPTIONS ELECTRICAL BUILDING COMPONENT LIFE EXPECTANCIES SITE 12 ELECTRICAL WRITE-UP DESCRIPTIONS ELECTRICAL BUILDING COMPONENT LIFE EXPECTANCIES CAMPUS UTILITY METERING 13 MECHANICAL WRITE-UP DESCRIPTIONS CENTRAL CHILLED WATER COOLING DESCRIPTION 14 MECHANICAL WRITE-UP DESCRIPTIONS
Mid Michigan Community College 2015 Master Plan Mechanical Infrastructure Replacement and System Improvement Summary Campus Building 1 to 5 Year Building Mechanical Equipment Replacement Need 5 to 20 Year Mechanical Replacement Need Description Opinion of probable Construction Costs Description Opinion of probable Construction Costs Harrison Allied Health The existing HVAC equipment was installed in the 1960's and 1970's and has well exceeded it useful life. Replace all of Allied Health Buildings HVAC equipment. $300,000 - $450,000 After Allied Health Buildings HVAC equipment is replaced in the five year plan, no other replacements are required for the next 20 years. $0.00 Harrison Automotive Technology The existing HVAC equipment was installed in the 1970's has well exceeded it useful life. Replace all of Automotive Technology Buildings HVAC equipment. $300,000-350,000 After Automotive Technology Buildings HVAC equipment is replaced in the five year plan, no other replacements are required for the next 20 years. $0.00 Harrison Food Service Building The majority of the existing HVAC equipment was installed in the 1970's and 1990's has well exceeded it useful life. Replace all of the Food Service Buildings HVAC equipment which has reached its useful life. $150,000 - $200,000 After Food Service Buildings HVAC equipment is replaced in the five year plan, other building HVAC equipment will require replacement in the next 20 years. $30,000 - $40,000 Harrison Goldberg Addition The existing HVAC equipment was installed in 2003 and is in good condition. No HVAC equipment replacement is required in the next 5 years. $0.00 The Goldberg Addition HVAC equipment will require replacement based on their life expectancy ratings in the next 20 years. $120,000 - $150,000 Harrison Instructional Classroom & Labs- East Addition Replace lab controls and air valves that were installed in 1997 and miscellaneous HVAC equipment that will reached their useful life in the next five years. $200,000 - $300,000 After the Buildings HVAC equipment is replaced in the five year plan, other building HVAC equipment will require replacement in the next 20 years. $800,000 - $900,000 Harrison Instructional Facility West The majority of the existing HVAC equipment was installed in the 1960's and has well exceeded it useful life. Replace all of the Instructional Facility West Buildings HVAC equipment which has reached its useful life. $400,000 - $500,000 After the Buildings HVAC equipment is replaced in the five year plan, other building HVAC equipment will require replacement in the next 20 years. $300,000 - $400,000 Harrison SOAR Addition The existing SOAR Addition HVAC equipment was installed in 2003 and is in good condition. No HVAC replacement is required in the next 5 years. $0.00 The SOAR Addition HVAC equipment will require replacement based on their life expectancy ratings in the next 20 years $400,000 -$500,000 Harrison The Majority of the existing HVAC equipment was replaced in 2011. Technology Trades Smaller HVAC systems that were Center (Computer and installed in 1982 were not replaced. Welding Labs) Replace the balance of HVAC systems that have exceeded their useful life. $14,000 - $20,000 The majority of the existing HVAC systems are new, but at the end of the 20 year plan will be required to be replaced. $450,000 - $600,000 Harrison H-TECH The Majority of the existing HVAC equipment was replaced in 2011. Smaller HVAC systems that were installed in 2000 were not replaced. Replace the balance of HVAC systems that have exceeded their useful life. $100,000 - $150,000 The majority of the existing HVAC systems are new, but at the end of the 20 year plan will be required to be replaced. $400,000 - $500,000 Harrison RADTECH The existing RADTECH Building HVAC equipment was installed in 2003 and is in good condition. No HVAC replacement is required in the next 5 years. $0.00 The majority of the existing HVAC systems are new, but at the end of the 20 year plan will be required to be replaced. $300,000 - $400,000 Total $1,600,000 - $2,000,000 $3,000,000 - $3,500,000 Harrison Campus Wide Install Individual Building Utility Meters to Monitor and Control Energy Usage. $80,000 -$120,000 If individual utility meters are installed, no additional metering will be required for 20 years. $0.00 Harrison Campus Wide Replace aging campus chillers with central chillers. $800,000 - $1,300,000 If chillers are replaced no additional replacement will be required for 20 years. $0.00
Campus Mid Michigan Community College 2015 Master Plan Electrical Infrastructure Replacement and System Improvement Summary Building 1 to 5 Year Building Electrical Equipment Replacement Need Description Opinion of probable Construction Costs 5 to 20 Year Electrical Replacement Need Description Opinion of probable Construction Costs Harrison Allied Health Replace existing light fixtures with more efficient fixtures. Provide new automatic lighting controls and daylight harvesting where applicable. Replace existing electrical distribution equipment with new equipment. $328,774.00 Harrison Automotive Technology Replace existing light fixtures with more efficient fixtures. Provide new automatic lighting controls and daylight harvesting where applicable. Replace existing electrical distribution equipment with new equipment. $244,171.00 Harrison Food Service Building Replace existing light fixtures with more efficient fixtures. Provide new automatic lighting controls and daylight harvesting where applicable. Replace existing electrical distribution equipment with new equipment. $228,707.00 Harrison Goldberg Addition Replace existing light fixtures with more efficient fixtures. Provide new automatic lighting controls and daylight harvesting where applicable. Replace existing electrical distribution equipment with new equipment. $94,890.00 Harrison SOAR Building Replace one panelboard and transformer from original building. $16,885.00 Replace existing light fixtures and controls and daylight harvesting where applicable. $376,863.00 Harrison Instructional Classroom & Labs- East Addition Replace existing light fixtures with more efficient fixtures. Provide new automatic lighting controls and daylight harvesting where applicable. $178,525.00 Replace existing transformer. $13,226.00 Harrison Instructional Facility West Replace existing light fixtures with more efficient fixtures. Provide new automatic lighting controls and daylight harvesting where applicable. Replace older electrical distribution equipment with new equipment. $670,470.00 Replace electrical distribution equipment as it reaches the end of its anticipated life. $127,132.00 Harrison Technology Trades Center Harrison H-TECH Replace existing transformer. $36,200.00 Harrison Harrison RADTECH Maintenance and Receiving Buildings Replace lighting, provide automatic lighting controls, replace transformer, replace distribution panelboards. Replace temporary feeder to receiving building. $208,674.00 Replace light fixtures and controls. Replace electrical distribution equipment as it reaches the end of its anticipated life. Replace light fixtures and controls. Replace fire alarm system. Replace light fixtures and controls. Replace branch circuit receptacle panelboards. $264,024.00 $859,401.00 $147,485.00 $68,697.00 Harrison Campus Wide Replace site lighting poles and fixtures and provide new controls. $837,194.00 Replace existing primary gear. $193,353.00 Totals $2,844,490.00 $2,050,181.00
President's House Tech Trades Welding/Computer Classrooms Instructional Facility West Instructional Facility East S.O.A.R. MainEntrance Labs/Classrooms Automotive Technology Allied Health Goldburg Food Service Maintenance Bldg. Over ow Parking RAD TEC Maintenance Storage Lower Maintenance H-TEC Building MID MICHIGAN COMMUNITY COLLEGE HARRISON CAMPUS
Allied Health General Building Mechanical Description Mid-Michigan Community College s Harrison Campus was established in 1968 with construction of the Instructional Facility and Allied Health Building. MMCC Harrison Campus has undergone many renovations and additions from 1968 to present including mechanical and electrical systems, infrastructure upgrades, building renovations, and additions. The Allied Health Building bridges between the West Instructional Facility and Food Service Building. Allied Health was constructed in 1968 and underwent a major renovation adding a second floor in 1976. The building has two occupied floors plus a penthouse mechanical space and consists of approximately 16,670 square feet. College administrative offices are located on the first floor of Allied Health. The second floor of Allied Health houses classrooms, classroom support spaces and staff offices. Building Heating System - The campus heating hot water system located in the Instructional Facility Mechanical Penthouse was upgraded in 2005 and serves the heating requirements for all the contiguous Harrison Campus Buildings with the exception of the food service gas fired air handling units. Heating hot water for the system is generated by three gas fired, flexible tube, heating hot water boilers. Heating hot water distribution system is piped in a primary loop arrangement. Two variable flow primary pumps (one operates continuously while the other is stand-by) circulate heating hot water through the primary loop between the boilers and the building(s) heating equipment. Building heating equipment utilize 2-way control valves controlled to maintain space temperatures. Heating hot water system is controlled by the original campus DDC control system. Building Cooling System A chilled water system located in the Instructional Facility was upgraded in 2002 and serves the cooling requirements for the Instructional Facility and Allied Health Building. Chilled water is generated by an air cooled chiller located on the Instructional Facilities roof outside the Mechanical Penthouse. Chilled water distribution system is piped in a primary loop arrangement. One constant flow primary pump circulates chilled water through the primary loop between the chiller and the building(s) air handling unit chilled water cooling coils. Building air handling unit chilled water cooling coils utilize 3- way control valves controlled to maintain space temperatures. Chilled water system is controlled by the original campus DDC control system. Air Handling Unit SA-1, located in the mechanical equipment penthouse; is a variable air volume, mixed air system installed in 1976. The system consists of a mixing box with integral return and outside air dampers, gravity relief hood with relief air dampers, 1.1
filters, hot water heating coil with circulating pump for freeze protection, chilled cooling coil, and a constant volume supply fan with discharge damper for supply air volume control. The SA-1 serves the second floor spaces of the Allied Health Building and supplies air to the spaces through variable air volume diffusers to provide space temperature control. SA-1 is controlled by a combination of pneumatic temperature controls and the original campus DDC control system. Air Handling Unit SA-4, located in Room 133; is a constant air volume, mixed air systems installed in 1968. The system consists of a mixing box with integral return and outside air dampers, gravity relief hood with relief air dampers, filters, hot water heating coil with circulating pump for freeze protection, chilled cooling coil, and a constant volume supply. The SA-4 serves the first floor administrative spaces in the Allied Health Building and supplies air to the spaces through reheat coils to provide space temperature control. SA-4 is controlled by a combination of pneumatic temperature controls and the original campus DDC control system. Vertical Unit Ventilators VUV-1 & 2 located in the Michigan Room are constant air volume, mixed air systems installed in 2010. Each system consists of a constant air volume exhaust fan, mixing box with integral outside air, return air and exhaust air dampers, heat recovery wheel, filters, hot water heating coil, chilled water cooling coil and a constant air volume supply air fan. The vertical unit ventilators serve the Michigan Room through low pressure supply air distribution ductwork and ceiling supply air diffusers. VUV-1 & 2 are controlled by the original campus DDC control system. Exhaust Fans EF-1, 2, 3, 4, 7 & 16 are constant volume exhaust systems with motorized backdraft dampers and pneumatic controls. EF-1 located on the roof, installed in 1976 serves Darkroom 235. EF-2 located on the roof, installed in 1976 serves the second floor toilet rooms. EF-3 located on the roof, installed in 1976 is abandoned in place and served a fume hood on the second floor, which has been removed. EF-4 located on the roof, installed in 1976 serves the second floor toilet rooms adjacent to Room 224. EF-7 located in room 127, installed in 1968 serves the President s Office Toilet Room and Conference Room 132. EF-16 located on the roof, installed in 1968 serves the toilet rooms north of the administrative offices. Allied Health Building Mechanical System Condition Assessment In general, the buildings mechanical equipment is 40 to 45 years old and in poor condition. An exception is the Michigan Room vertical unit ventilators, which were installed in 2010 and are in good condition. The building mechanical equipment with the exception of the Michigan Room vertical unit ventilators has exceeded the end of their useful life expectancy of 20 to 25 years based on the American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE) guidelines. 1.2
Recommendations One to five year plan The existing HVAC equipment was installed in the 1960 s and 1970 s and has well exceeded it useful life. Replace all of Allied Health buildings HVAC equipment to accommodate current building functions. The Estimated construction cost for this work is $396,500. Five to twenty year plan After Allied Health Buildings HVAC is replaced in the five year plan, no other HVAC replacement are required for the next 20 years. Mechanical Equipment Replacement Schedule Peter Basso Associates has developed a Mechanical Equipment Replacement Schedule for the Allied Health Building at MMCC Harrison Campus. The schedule is based on field observations to determine the condition of the existing mechanical equipment along with, comparing the age of the equipment to the American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE) Mechanical Equipment Useful Life Expectancy Guidelines. The schedule has a 20 year duration period beginning in 2015 and includes; equipment installation dates, end of equipment useful life dates, years of equipment useful life expectancy, opinion of probable equipment replacement costs (based on replacing equipment with similar like and kind equipment) in 2015 dollars with a 3% inflation factor for each following year beginning in 2015 and anticipated annual spending required for equipment replacement. Allied Health Electrical Equipment Descriptions General Building Description The Allied Health addition included a renovation of a portion of the original main building and an addition. The main building was constructed in starting in 1968, and the 2 nd floor was added in 1976. The overall facility consists of approximately 25,200 square feet of space. The Allied Health addition consists of classrooms, offices, and auditorium. Power: This part of the facility is fed from the service that serves the original building. Most of the electrical distribution equipment in the addition is from the original construction or from the 1976 addition. The equipment in the addition is a mixture of fair and poor conditions. 1.3
Lighting: The light fixtures in the building are fluorescent and utilize T8 lamps. Most of the light fixtures are from the original construction and appear to be in good condition. Current internal lighting control consists of toggle switches in most rooms. Emergency systems: The egress lighting is provided by unit mounted battery ballasts and packs. These units require scheduled testing and typically have a life of expectancy of 7 to 10 years. Auxiliary systems: The existing voice and data systems are located in the I.T. cabinet in the main electrical room. The cabling appears to be properly installed and protected. The fire alarm system is manufactured by Siemens. Recommendations One to five year plan Replace the existing light fixtures. Provide new automatic controls and daylight harvesting where applicable. Replace electrical distribution equipment. The Estimated construction cost for this work is $328,774. 1.4
Allied Health MID-MICHIGAN COMMUNITY COLLEGE HARRISON CAMPUS BUILDING COMPONENT LIFE EXPECTANCY LEGEND Equipment or system is in good condition, operates efficiently and as designed, little wear Equipment or system is in fair condition, should be regularly monitored due to age, and maintenance should be performed as required Date Updated: 09-15-2015 Building Built in 1968. 2nd floor added in 1976 Equipment or system is nearing, or at the end of its useful life based on condition and/or industry standards Note: Study-period based on 20 years. Inflation Factor at 3% /YR Beginning in 2014 1.000 1.030 1.061 1.093 1.126 1.159 1.194 1.230 1.267 1.305 1.344 1.384 1.426 1.469 1.513 1.558 1.605 1.653 1.702 1.754 1.806 Base Line Cost (2013) Projected Cost for Year Indicated Mechanical Systems 1 Air Handling Unit SA-4 (1968) 63,098 63,098 2015 25 2 Pump P-12 (SA-4 HWH Coil) (1968) 4,218 4,218 2015 25 3 Unit Ventilator VUV-1 (MI Room - 2010) 0 0 2035 25 4 Unit Ventilator VUV-2 (MI Room - 2010) 0 0 2035 25 5 Air Handling Unit SA-1 (1976) 127,981 127,981 2015 25 6 Exhaust Fan EF-1 (1976) 4,350 4,350 2015 20 7 Exhaust Fan EF-2 (1976) 4,350 4,350 2015 20 8 Exhaust Fan EF-3 (Abandoned in place) 0 0 2015 20 9 Exhaust Fan EF-4 (1976) 4,049 4,049 2015 20 10 Exhaust Fan EF-5 (1971) 4,049 4,049 2015 20 11 Exhaust Fan EF-6 (1971) 4,350 4,350 2015 20 12 Exhaust Fan EF-7 (1968) 4,049 4,049 2015 20 13 Exhaust Fan EF-16 (1968) 4,350 4,350 2015 20 14 Pump P-1 (SA #1 CHW Coil) (1976) 4,981 4,981 2015 20 15 Pump P-2 (SA #1 HWH Coil) (1976) 4,981 4,981 2015 20 16 Reheat coils (10) (1968 & 1976) 22,170 22,170 2015 25 17 Gravity Relief Vents (2) (1976) 7,667 7,667 2015 25 18 Cabinet Unit Heaters (22) (1968 & 1976) 109,426 109,426 2015 30 19 Convectors (4) (1976) 7,894 7,894 2015 30 20 Finned Tube (110 Feet) (1968) 14,509 14,509 2015 30 21 FTR - MI Room (2010) 0 0 2040 30 Useful Life In Years 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 Future Cash Flow: 396,473 Yearly Totals: 396,473 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Total Projected Cost: 396,473 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035
ALLIED HEALTH MID-MICHIGAN COMMUNITY COLLEGE HARRISON CAMPUS BUILDING COMPONENT LIFE EXPECTANCY LEGEND Equipment or system is in good condition, operates efficiently and as designed, little wear Equipment or system is in fair condition, should be regularly monitored due to age, and maintenance should be performed as required Date Updated: 01-7-2013 Building Built in 1968. 2nd floor added in 1976 Equipment or system is nearing, or at the end of its useful life based on condition and/or industry standards Note: Study-period based on 20 years. Inflation Factor at 3% /YR Beginning in 2014 1.000 1.030 1.061 1.093 1.126 1.159 1.194 1.230 1.267 1.305 1.344 1.384 1.426 1.469 1.513 1.558 1.605 1.653 1.702 1.754 1.806 Base Line Cost (2013) Electrical Systems 1 Lighting & Controls 238,602 238,602 2015 20 2 T12 Lighting in Penthouse 4,415 4,415 2015 20 3 Fire Alarm 91,770 192,146 2038 20 4 Distribution Panels 46,876 48,282 2016 40 5 Transformer 10,441 10,441 2015 25 6 Panelboards 26,246 27,034 2016 40 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Projected Cost for Year Indicated Useful Life In Years 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 Future Cash Flow: 418,350 Yearly Totals: 253,458 75,316 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Total Projected Cost: 520,920 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035
Automotive Technology General Building Mechanical Description Mid Michigan Community College s Harrison Campus was established in 1968 with construction of the Instructional Facility and Allied Health Building. MMCC Harrison campus has undergone many renovations and additions from 1968 to present including mechanical and electrical systems infrastructure upgrades, building renovations, and additions. The Automotive Technology Building is located on the south side of the East Instructional Facility Building. Automotive Technology was constructed in 1977. The building is a high bay single story structure and consists of approximately 14,310 square feet. Automotive Technology houses a large automotive laboratory, engine classroom/laboratories, general classrooms, classroom/laboratory support spaces and staff offices. Building Heating System- The campus heating hot water system located in the West Instructional Facility Mechanical Penthouse was upgraded in 2005 and serves the heating requirements for all the contiguous Harrison Campus Buildings with the exception of the Food Service gas fired air handling units. Heating hot water for the system is generated by three gas fired, flexible tube, heating hot water boilers. Heating hot water distribution system is piped in a primary loop arrangement. Two variable flow primary pumps (one operates continuously while the other is stand-by) circulate heating hot water through the primary loop between the boilers and the building(s) heating equipment. Building heating equipment utilize 2-way control valves controlled to maintain space temperatures. Heating hot water system is controlled by the original campus DDC control system. Building Cooling System A chilled water system located in the West Instructional Facility was upgraded in 2002 and serves the cooling requirements for the Instructional Facility, Allied Health Building, and Automotive Technology Building. Chilled water is generated by an air cooled chiller located on the West Instructional Facilities roof outside the Mechanical Penthouse. Chilled water distribution system is piped in a primary loop arrangement. One constant flow primary pump circulates chilled water through the primary loop between the chiller and the building(s) air handling unit and unit ventilator chilled water cooling coils. Building air handling unit and unit ventilator chilled water cooling coils utilize 3-way control valves controlled to maintain space temperatures. Chilled water system is controlled by the original campus DDC control system. Air Handling Unit SA-3, located above Tool Crib 188, is a constant air volume, mixed air system installed in 1977. The system consists of a mixing box with integral return and outside air dampers, filters, hot water heating coil with circulating pump for freeze protection and a constant volume supply air fan. The SA-3 serves the large Automotive Laboratory and two engine classroom/laboratories. Air is supplied to the spaces through sheet metal supply air distribution ductwork with supply air registers. SA-3 is controlled by original pneumatic temperature. 2.1
Unit Ventilator UV-1 is located in and serves Classroom 181. System is a constant air volume; mixed air system installed in 1977, consisting of a mixing box with integral outside air, return air dampers, relief air hood with relief air damper, filters, hot water heating coil, chilled water cooling coil and a constant air volume supply air fan. UV-1 is controlled by original pneumatic control system. Unit Ventilator UV-2 is located in and serves Classroom 191. System is a constant air volume; mixed air system installed in 1977, consisting of a mixing box with integral outside air, return air dampers, relief air hood with relief air damper, filters, hot water heating coil, chilled water cooling coil and a constant air volume supply air fan. UV-2 is controlled by original pneumatic control system. Fan Coil Unit FCU-1 is located in and serves Office 190. System is a constant air volume, recirculating air conditioning system installed in 1977, consisting of filters, chilled water cooling coil and a constant air volume supply air fan. FCU-1 is controlled by original pneumatic control system. Exhaust Fans EF-1, 2, 3, 4, 5 & 6 are constant volume exhaust systems with motorized backdraft dampers and local electric/pneumatic controls. EF-1 located on the roof, installed in 1977, serves Engine Laboratory 195. EF-2 located on the roof, installed in 1977, serves Engine Rehabilitation 182. EF-3 located on the roof, installed in 1977, serves Automotive Laboratory 189. EF-4 located on the roof, installed in 1976 serves the toilet and locker rooms. EF-5 located in and serves Engine Laboratory 195, was installed in 1977. EF-6 located in and serves Automotive Laboratory 189, was installed in 1968 serves the toilet rooms north of the administrative offices. Automotive Technology Building Mechanical System Condition Assessment The buildings mechanical equipment is 37 and in poor condition. The building mechanical equipment has exceeded the end of their useful life expectancy of 20 to 25 years based on the American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE) guidelines. Recommendations One to five year plan The existing HVAC equipment was installed in the 1970 s and has well exceeded it useful life. Replace all of Automotive Technology Buildings HVAC equipment to accommodate current building functions. The Estimated construction cost for this work is $303,000. Five to twenty year plan After Automotive Technology Buildings HVAC is replaced in the five year plan, no other HVAC replacement are required for the next 20 years. 2.2
Mechanical Equipment Replacement Schedule Peter Basso Associates has developed a Mechanical Equipment Replacement Schedule for the Automotive Technology Building at MMCC Harrison Campus. The schedule is based on field observations to determine the condition of the existing mechanical equipment along with, comparing the age of the equipment to the American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE) Mechanical Equipment Useful Life Expectancy Guidelines. The schedule has a 20 year duration period beginning in 2015 and includes; equipment installation dates, end of equipment useful life dates, years of equipment useful life expectancy, opinion of probable equipment replacement costs (based on replacing equipment with similar like and kind equipment) in 2015 dollars with a 3% inflation factor for each following year beginning in 2015 and anticipated annual spending Automotive Technology Electrical Equipment Descriptions General Building Description The Automotive Technology addition included a single story addition to the lower level of the original main building. The main building was constructed in starting in 1977. The addition consists of approximately 10,600 square feet of space. The Automotive Technology addition consists of classrooms, and automotive labs. Power: This part of the facility is fed from the service that serves the original building. Most of the electrical distribution equipment in the addition is from the original construction or from the 1977 addition. The equipment in the addition is a mixture of fair and good conditions. Lighting: The light fixtures in the building are fluorescent and utilize T8 lamps. Most of the light fixtures are from the original construction and appear to be in good condition. Current internal lighting control consists of toggle switches in most rooms. Emergency systems: The egress lighting is provided by unit mounted battery ballasts and packs. These units require scheduled testing and typically have a life of expectancy of 7 to 10 years. 2.3
Auxiliary systems: The existing voice and data systems are located in the I.T. cabinet in the main electrical room. The cabling appears to be properly installed and protected. The fire alarm system is manufactured by Siemens. Recommendations One to five year plan Replace the existing light fixtures. Provide new automatic controls and daylight harvesting where applicable. Replace electrical distribution equipment. The Estimated construction cost for this work is $244,171. 2.4
Auto Technology Addition MID-MICHIGAN COMMUNITY COLLEGE HARRISON CAMPUS BUILDING COMPONENT LIFE EXPECTANCY LEGEND Equipment or system is in good condition, operates efficiently and as designed, little wear Equipment or system is in fair condition, should be regularly monitored due to age, and maintenance should be performed as required Date Updated: 09-15-2015 Building Built in 1977 Equipment or system is nearing, or at the end of its useful life based on condition and/or industry standards Note: Study-period based on 20 years. Inflation Factor at 3% /YR Beginning in 2014 1.000 1.030 1.061 1.093 1.126 1.159 1.194 1.230 1.267 1.305 1.344 1.384 1.426 1.469 1.513 1.558 1.605 1.653 1.702 1.754 1.806 Mechanical Systems Base Line Cost (2013) Projected Cost for Year Indicated Useful Life In Years 1 Air Handling Unit SA-3 (1977) $61,976 $61,976 2015 25 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2 Unit Ventilator UV-1 (1977) $20,334 $20,334 2015 25 3 Unit Ventilator UV-2 (1977) $20,334 $20,334 2015 25 4 Fan Coil Unit FCU-1 (1977) $13,434 $13,434 2015 25 5 Exhaust Fan EF-1 (1977) $10,623 $10,623 2015 20 6 Exhaust Fan EF-2 (1977) $10,623 $10,623 2015 20 7 Exhaust Fan EF-3 (1977) $10,623 $10,623 2015 20 8 Exhaust Fan EF-4 (1977) $10,623 $10,623 2015 20 Note: Automotive Technology Addition's HVAC Equipment is 36 years old and is well beyond its life expectancy. 9 Exhaust Fan EF-5 (1977) $11,178 $11,178 2015 20 10 Exhaust Fan EF-6 (1977) $11,178 $11,178 2015 20 11 Pump P-3 (SA-3)(1977) $8,194 $8,194 2015 20 12 Unit Heaters UH-1 through UH-14 (1977) $82,902 $82,902 2015 30 13 Cabinet Unit Heaters CH-5 (1977) $5,231 $5,231 2015 30 14 Gravity Intake Hoods (2)(1977) $6,376 $6,376 2015 25 15 Gravity Relief Hoods (2)(1977) $6,376 $6,376 2015 25 16 Convectors (4)(1977) $12,878 $12,878 2015 30 2015 Dollars: $302,885 Yearly Totals: 302,885 Total Projected Construction Cost (2014): $302,885 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035
AUTO TECHNOLOGY ADDITION MID-MICHIGAN COMMUNITY COLLEGE HARRISON CAMPUS BUILDING COMPONENT LIFE EXPECTANCY LEGEND Equipment or system is in good condition, operates efficiently and as designed, little wear Equipment or system is in fair condition, should be regularly monitored due to age, and maintenance should be performed as required Date Updated: 01-7-2013 Building Built in 1977 Note: Study-period based on 20 years. Equipment or system is nearing, or at the end of its useful life based on condition and/or industry standards Inflation Factor at 3% /YR Beginning in 2014 1.000 1.030 1.061 1.093 1.126 1.159 1.194 1.230 1.267 1.305 1.344 1.384 1.426 1.469 1.513 1.558 1.605 1.653 1.702 1.754 1.806 Mechanical Systems Base Line Cost (2013) Projected Cost for Year Indicated Useful Life In Years 1 Lighting & Controls $133,115 $133,115 2015 20 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2 Fire Alarm $51,198 $107,197 2038 20 3 Dist Panel "DP-2" $19,022 $20,180 2017 40 4 Dist Panel "DP-1" $48,826 $51,799 2017 40 5 Transformer $11,904 $11,904 2015 25 6 Panelboards $25,613 $27,173 2017 40 7 8 9 10 11 12 13 14 15 16 2013 Dollars: $289,677 Yearly Totals: 145,019 $99,152 Total Projected Construction Cost (2014): $351,368 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035
AUTO TECHNOLOGY ADDITION MID-MICHIGAN COMMUNITY COLLEGE HARRISON CAMPUS BUILDING COMPONENT LIFE EXPECTANCY LEGEND Equipment or system is in good condition, operates efficiently and as designed, little wear Equipment or system is in fair condition, should be regularly monitored due to age, and maintenance should be performed as required Date Updated: 01-7-2013 Building Built in 1977 Note: Study-period based on 20 years. Equipment or system is nearing, or at the end of its useful life based on condition and/or industry standards Inflation Factor at 3% /YR Beginning in 2014 1.000 1.030 1.061 1.093 1.126 1.159 1.194 1.230 1.267 1.305 1.344 1.384 1.426 1.469 1.513 1.558 1.605 1.653 1.702 1.754 1.806 Mechanical Systems Base Line Cost (2013) Projected Cost for Year Indicated Useful Life In Years 1 Lighting & Controls $133,115 $133,115 2015 20 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2 Fire Alarm $51,198 $107,197 2038 20 3 Dist Panel "DP-2" $19,022 $20,180 2017 40 4 Dist Panel "DP-1" $48,826 $51,799 2017 40 5 Transformer $11,904 $11,904 2015 25 6 Panelboards $25,613 $27,173 2017 40 7 8 9 10 11 12 13 14 15 16 2013 Dollars: $289,677 Yearly Totals: 145,019 $99,152 Total Projected Construction Cost (2014): $351,368 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035
Food Service General Building Mechanical Description Mid-Michigan Community College s Harrison Campus was established in 1968 with construction of the Instructional Facility and Allied Health Building. MMCC Harrison campus has undergone many renovations and additions from 1968 to present including mechanical and electrical systems infrastructure upgrades, building renovations, and additions. The Food Service Building is located on the south side of the Allied Health Building. Food Service Building was constructed in 1972 and underwent a renovation in 1991 adding new conference rooms to the west side of the building. In 2003 the HVAC systems serving the 1991 addition were replaced. The building s two occupied floors and consists of approximately 14,500 square feet. College cafeteria, kitchen and conference rooms are located on the first floor of Food Service. The Michigan Room Conference Center is on the second floor. Building Heating System- The campus heating hot water system located in the Instructional Facility Mechanical Penthouse, was upgraded in 2005 and serves the heating requirements for all the contiguous Harrison Campus Buildings, with the exception of the Food Service gas fired air handling units. Heating hot water for the system is generated by three gas fired, flexible tube, heating hot water boilers. Heating hot water distribution system is piped in a primary loop arrangement. Two variable flow primary pumps (one operates continuously while the other is stand-by) circulate heating hot water through the primary loop between the boilers and the building(s) heating equipment. Building heating equipment utilize 2-way control valves controlled to maintain space temperatures. Heating hot water system is controlled by the original campus DDC control system. Building Cooling System The building cooling system consists of direct expansion cooling within each outdoor air handling and rooftop unit, with the exception of the Kitchen Make-up Air Unit, which is not equipped with cooling. Each DX system in each unit consists of an air cooled condensing unit and refrigerant cooling coil to provide cooling to the spaces served by each unit. Building Domestic Hot Water System The building domestic hot water system consists of gas fired hot water heater(s), and domestic hot water recirculation pump. Domestic hot water distribution piping supplies hot water to buildings hot water using plumbing fixtures. Domestic hot water return piping and recirculation pump continuously circulates hot water through the distribution piping system so hot water is always available at the plumbing fixtures. Air Handling Unit RTU-1 located on grade east of the building is a constant air volume, mixed air, multi-zone systems replaced in 2012. The system consists of air cooled condensing unit, mixing box with integral return and outside air dampers, gravity relief hood with relief air dampers, filters, natural gas fired heating section, constant volume 3.1
supply fan, hot and cold deck zone mixing damper section and DX cooling coil located in the cold deck of zone mixing damper section. RTU-1 serves the cafeteria, servery and cafeteria support spaces. Air is supplied to each space through individual zone hot and cold deck dampers with a thermostat in each zone and individual zone supply air ducts for space temperature control. RTU-1 is controlled by package controls provided by the air handling unit manufacturer. West Cafeteria Rooftop Air Handling Unit RTU located on roof west of the Michigan Room; is a constant air volume, mixed air unit installed in 1991. The system consists of air cooled condensing unit, mixing box with integral return and outside air dampers, gravity relief hood with relief air dampers, filters, DX cooling coil, constant volume supply fan and duct mounted hot water heating coil located indoors below roof. RTU serves the west side of the cafeteria through low pressure supply air distribution ductwork and ceiling supply air diffusers. RTU is controlled by a space thermostat through package controls provided by the air handling unit manufacturer. Make-up Air Unit MAU-1 located on grade east of the building; is a constant air volume, 100% outside air system installed in 1972. The system consists of outside air dampers, filter, natural gas fired heating section and constant volume supply fan. MAU-1 serves the kitchen and provides outside air for the kitchen exhaust hood. Air is supplied to the space through low pressure supply air distribution ductwork and supply air diffusers. MAU-1 is controlled by a space thermostat through package controls provided by the air handling unit manufacturer. Exhaust Fans EF-1, 2, 3, 4, 6 & West Cafeteria are constant volume exhaust systems with motorized backdraft dampers and electric/pneumatic controls. EF-1 located on Allied Health roof, installed in 1972 and relocated in 1976 serves first floor Men s and Women s Toilet Rooms. EF-2 located on the roof, installed in 1972 serves the dishwasher. EF-3 located on the roof, installed in 1972 serves the kitchen hood. EF-4 located on the east wall, installed in 1972 serves the first floor storage room. EF-6 located on the roof, installed in 1972 serves the servery hood. West Cafeteria exhaust fan located on the roof, installed in 1991 serves the west side of the cafeteria. Food Service Building Mechanical System Condition Assessment In general the age of buildings mechanical equipment ranges from new to 41 years old. Refer to Mechanical Equipment Replacement Schedule and Opinion of Probable Replacement Costs. Mechanical equipment replacement schedule and associated opinions of probable equipment replacement costs are based on replacing the existing mechanical equipment with similar like and kind equipment. The following outlines the age and remaining useful life of the building mechanical equipment based on the American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE) equipment life expectancy guidelines: Air handling Unit RTU-1 was replaced in 2012 and is in good condition. With proper service and maintenance RTU-1 should have a remaining useful life expectancy of 20 to 25 years. 3.2
West Cafeteria rooftop air handling unit and the building heating fin tube radiation are 12 years of age and in fair condition. With proper service and maintenance this equipment should have a remaining useful life expectancy of 5 to 10 years. The building s remaining mechanical equipment is 41 years old and in poor condition. This mechanical equipment has exceeded the end of their useful life expectancy of 20 to 25 years based on the American Society of Heating, Refrigeration, and Air conditioning Engineers (ASHRAE) guidelines. Recommendations One to five year plan The majority of the existing HVAC equipment was installed in the 1970 s and 1990 s has exceeded it useful life and is in poor condition. Replace all of Food Service Buildings HVAC equipment that has exceeded their useful life with equipment that will accommodate current building functions. The Estimated construction cost for this work is $150,500. Five to twenty year plan After the Food Service Buildings HVAC is replaced in the five year plan, other HVAC equipment will be required to be replaced in the next 20 years. The Estimated construction cost for this work is $32,500. Mechanical Equipment Replacement Schedule Peter Basso Associates has developed a Mechanical Equipment Replacement Schedule for the Food Service Building at MMCC Harrison Campus (refer to schedule in this document. The schedule is based on field observations to determine the condition of the existing mechanical equipment along with, comparing the age of the equipment to the American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE) Mechanical Equipment Useful Life Expectancy Guidelines. The schedule has a 20 year duration period beginning in 2015 and includes; equipment installation dates, end of equipment useful life dates, years of equipment useful life expectancy, opinion of probable equipment replacement costs (based on replacing equipment with similar like and kind equipment) in 2015 dollars with a 3% inflation factor for each following year beginning in 2015 and anticipated annual spending required for equipment replacement. The schedule also includes color coded graphic illustration over the 20 year period indicating equipment remaining useful life. Food Services Electrical Equipment Descriptions General Building Description The Food Services addition included a two story addition to original main building. The main building was constructed in starting in 1972, with renovations in 1991 and an addition in 2003. The addition consists of approximately 13,000 square feet of space. The Food Services addition consists of offices, classrooms, a dining area, and a kitchen. 3.3
Power: This part of the facility is fed from the service that serves the original building. Most of the electrical distribution equipment in the addition is from the original 1972 construction. The equipment in the addition is in fair condition. Lighting: The light fixtures in the building are fluorescent and utilize T8 lamps. Most of the light fixtures are from the original construction and appear to be in good condition. Current internal lighting control consists of toggle switches in most rooms, with some occupancy sensor control. Emergency systems: The egress lighting is provided by unit mounted battery ballasts and packs. These units require scheduled testing and typically have a life of expectancy of 7 to 10 years. Auxiliary systems: The existing voice and data systems are located in the I.T. cabinet in the main electrical room. The cabling appears to be properly installed and protected. The fire alarm system is manufactured by Siemens. Recommendations One to five year plan Replace the existing light fixtures. Provide new automatic controls and daylight harvesting where applicable. Replace electrical distribution equipment. The Estimated construction cost for this work is $228,707. 3.4
Food Service Addition MID-MICHIGAN COMMUNITY COLLEGE CAMPUS BUILDING COMPONENT LIFE EXPECTANCY LEGEND Equipment or system is in good condition, operates efficiently and as designed, little wear Equipment or system is in fair condition, should be regularly monitored due to age, and maintenance should be performed as required Date Updated: 09-15-2015 Building Built in 1972, Renovated in 1991 and Addition in 2003 Note: Study-period based on 20 years. Equipment or system is nearing, or at the end of its useful life based on condition and/or industry standards Inflation Factor at 3% /YR Beginning in 2015 1.000 1.030 1.061 1.093 1.126 1.159 1.194 1.230 1.267 1.305 1.344 1.384 1.426 1.469 1.513 1.558 1.605 1.653 1.702 1.754 1.806 Mechanical Systems Base Line Cost (2013) Projected Cost for Year Indicated Useful Life In Years 1 Multizone Rooftop Unit RTU-1 (Replaced in 2012) 47,315 96,181 2037 25 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2 Make-up Air Unit MAU-1 (1972) 82,746 82,746 2015 25 3 Rooftop Unit RTU (1991) 22,668 22,668 2015 20 4 Reheat Coils (1) (1991) 3,055 3,147 2016 25 5 Exhaust Fan EF-1 (1972) 5,929 5,929 2015 20 6 Exhaust Fan EF-2 (1972) 4,861 4,861 2015 20 7 Exhaust Fan EF-3 (2010) 4,861 7,573 2030 20 8 Exhaust Fan EF-4 (1972) 5,929 5,929 2015 20 9 Exhaust Fan Dining Room (1991) 5,929 5,929 2015 20 10 Exhaust Fan EF-6 (1972) 4,861 4,861 2015 20 11 Pump P-1 (DHW) (1972) 3,933 3,933 2015 20 12 Domestic water Heater HWH-1 (Replaced in 2007) 10,704 15,261 2027 20 13 Dom. Hot Water Booster Heater (Replaced in 2007) 3,590 5,118 2027 20 14 Fin Tube Radiation CH-2 (1991) 3,585 4,281 2021 30 15 Cabinet Unit Heater (3) (1972) 10,482 10,482 2015 30 Future Cash Flow: 220,449 Yearly Totals: 147,339 3,147 4,281 20,379 7,573 Total Projected Cost: 278,901 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035
FOOD SERVICES ADDITION MID-MICHIGAN COMMUNITY COLLEGE CAMPUS BUILDING COMPONENT LIFE EXPECTANCY LEGEND Equipment or system is in good condition, operates efficiently and as designed, little wear Equipment or system is in fair condition, should be regularly monitored due to age, and maintenance should be performed as required Date Updated: 01-7-2013 Building Built in 1972, Renovated in 1991 and Addition in 2003 Note: Study-period based on 20 years. Equipment or system is nearing, or at the end of its useful life based on condition and/or industry standards Inflation Factor at 3% /YR Beginning in 2014 1.000 1.030 1.061 1.093 1.126 1.159 1.194 1.230 1.267 1.305 1.344 1.384 1.426 1.469 1.513 1.558 1.605 1.653 1.702 1.754 1.806 Electrical Systems Base Line Cost (2013) Projected Cost for Year Indicated Useful Life In Years 1 Lighting & Controls 163,254 163,254 2015 20 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2 Fire Alarm 62,790 131,468 2038 20 3 MDF 28,572 28,572 2015 40 4 Transformer 18,956 18,956 2015 25 5 Panelboards 17,926 17,926 2015 40 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Future Cash Flow: 291,497 Yearly Totals: 228,707 Total Projected Cost: 360,176 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035
Goldberg Addition General Building Mechanical Description Mid-Michigan Community College s Harrison Campus was established in 1968 with construction of the Instructional Facility and Allied Health Building. MMCC Harrison campus has undergone many renovations and additions from 1968 to present including mechanical and electrical systems infrastructure upgrades, building renovations, and additions. The Goldberg Addition is located on the south side of the Allied Health Building near the Food Service Building. The Goldberg Addition was constructed in 2003. The building has one occupied floors and consists of conference rooms. Building Heating System- The campus heating hot water system located in the Instructional Facility Mechanical Penthouse, was upgraded in 2005 and serves the heating requirements for all the contiguous Harrison Campus Buildings, with the exception of the Food Service gas fired air handling units. Heating hot water for the system is generated by three gas fired, flexible tube, heating hot water boilers. Heating hot water distribution system is piped in a primary loop arrangement. Two variable flow primary pumps (one operates continuously while the other is stand-by) circulate heating hot water through the primary loop between the boilers and the building(s) heating equipment. Building heating equipment utilize 2-way control valves controlled to maintain space temperatures. Heating hot water system is controlled by the original campus DDC control system. Building Cooling System The building cooling system consists of direct expansion cooling within each outdoor air handling and rooftop units. Each DX system in each unit consists of an air cooled condensing unit and refrigerant cooling coil to provide cooling to the spaces served by each unit. Building Domestic Hot Water System The building domestic hot water system consists of gas fired hot water heater(s), and domestic hot water recirculation pump. Domestic hot water distribution piping supplies hot water to buildings hot water using plumbing fixtures. Domestic hot water return piping and recirculation pump continuously circulates hot water through the distribution piping system so hot water is always available at the plumbing fixtures. Rooftop Air Handling Units ACU-1 through ACU-3 located on roof west of the Michigan Room; are constant air volume, mixed air units installed in 2003. The systems consist of air cooled condensing unit, mixing box with integral return and outside air dampers, gravity relief hood with relief air dampers, filters, DX cooling coil, constant volume supply fan and duct mounted hot water heating coil located indoors below roof. ACU-1 serves Conference Rooms 139 and 143, ACU-2 serves Conference Rooms 139 and Room 140 and ACU-3 serves Conference Room 141. Air is supplied form each unit to their respective spaces through low pressure supply air distribution ductwork and ceiling supply air diffusers. ACU s are controlled by a space thermostat through package controls provided by the air handling unit manufacturer. 4.1