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Jul 13 / Stephanie Bausman

The Highlands at Wyomissing Community Center

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The existing building consisted of approximately 56,000 sf and renovations were 39,000 sf of administrative, food services, meeting rooms and activity spaces. Additions totaled approximately 40,000sf of new office, auditorium and service spaces.

Core Area — Mechanical

PES designed high-efficient heat pumps that have an environmentally safe R410 refrigerant. The units were tied to the existing heat pump loop and new energy recovery units located on the roof for fresh air. The heat pumps have been designed to efficiently heat, cool and ventilate each space with the constraints of the proposed floor plan and available ceiling space.

The cooling towers and high efficient boilers are now equipped with automatic change over from cooling to heating based on the heat pump loop temperature.

Core Area — Electrical

Existing panels to the electrical distribution system were kept to allow existing panels to be reused. New panels were installed to provide additional circuits as needed.

The lighting design utilized T5 fluorescent lighting and LED lighting. 277/480V was specified throughout the facility which reduced the number of breakers in panels and sizes of step down transformers required. An emergency generator was placed adjacent to the new cooling towers on the roof. A natural gas generator has been installed because of its low maintenance and constant fuel supply. One automatic transfer switch was installed to provide circuit emergency lighting loads to the generator and the core emergency lighting load was removed from the existing diesel generator to provide spare capacity on serving future electrical loads.

The new lighting control approach was designed around Watt Stopper Digital Lighting Management (DLM). The DLM system was designed to provide control for individual rooms, an entire floor, or campus. The control options include: room controllers for switched or dimmed lighting, Plug loads, digital occupancy sensors, switches or handheld remotes, and daylighting controls. The wiring uses a standard Cat5e cable with RJ45 connectors and because devices have a free-topology the devices can be configured in both star and daisy-chain patterns simplifying design, installation, and maintenance. The open protocol segment network enables easy integration with a building automation system.

Private office areas are controlled with local occupancy sensors, low voltage manual overrides, and optional plug load controls. Common spaces such as corridors, lobbies now have lighting reduction controls based on occupancy to reduce the lighting by 50% saving energy when those spaces are unoccupied. Multi-Purpose room/meeting rooms will have multiple levels of controls including dimming, A/V operation, shade control through a multi-button wall station or remote control.

Building Automation System (BAS)

The Building Automation system has the capabilities to expand and handle the entire building complex.

The BAS supports user access via standard browsers (such as Internet Explorer and Netscape), without any special software loaded on the thin client. Users will access the system via any computer with access to the Highlands network (either via intranet or internet).

Control and monitoring of building subsystems, including HVAC, electrical systems, lighting controls, CCTV, security and fire alarm will be via a single user interface that facilitates simplicity and use of the system. Industry standard, open protocols such as BACnet, LON, and MODbus are all supported for integration to a single platform.

The automation incorporates the latest in energy conservation strategies for systems of this type, including:

  • Scheduling & Occupied/Unoccupied Modes
  • Zone Set point Limiting
  • Demand Ventilation in Applicable Areas
  • Variable Hydronic Flow
  • Economizer Mode
  • Warm-Up and Cool-Down

Fire Alarm System

The Simplex 4100U Fire Alarm System transitioned over to the Edwards EST3 Fire Alarm System as each phase of construction commenced. The new EST3 System gives the facility the latest technology available in the industry to expand as node or point capacity, provide a Bacnet interface capability for HVAC connectivity and reporting as well as provide a remote Graphics Touch-screen PC interface for viewing/control of system events/functions remotely at the Reading Hospital. The new EST3 System also UL2572 listed for Mass Notification. This would eliminate the need for additional Mass Notification equipment panels as the base system would inherently already have this feature.

Multi-purpse Sound System

The Multi-purpose Room provides a new locally controlled sound reinforcement system. The system operates independently from the main Intercommunications System. The system accepts microphone and stereo line-level inputs, and faithfully and accurately amplify those signals uniformly to all seated occupants in the Multi-purpose Room. All amplification and signal processing equipment for the Multi-purpose Room is located in a wall mounted equipment cabinet with locking front door. A remote on/off keyed switch with an LED indicator lamp is included on a custom two-gang plate to show the status of the system operation. The system provides a high threshold of gain before feedback and shall accurately reproduce and amplify all voice and music signal without feedback, oscillation, distortion, or other unwanted effects or interference. The system includes a separate delayed speaker circuit(s) to compensate for any abnormalities due to architectural design of the room with reference to speaker placement.

Mar 27 / Stephanie Bausman

HVAC for Schools: Energy Efficiency on a Budget

The utility bill is typically the second largest expense for a school district, exceeded only by payroll. The building or campus HVAC system presents engineers with a big opportunity for saving their clients money in all climates and conditions. Although the heating and cooling needs of elementary, middle, and high schools differ from each other and from those of colleges and universities, HVAC system designers must consider the following criteria:

• Indoor air quality (IAQ)
• Energy efficiency
• HVAC equipment sound levels
• System complexity
• First cost and lifecycle cost
• Operations and maintenance costs.

Two projects that fit this scenario are Hanover Street Elementary School and Washington  Elementary School, Hanover, Pennsylvania.  The two projects included HVAC design services with a feasibility study and life cycle cost analysis.

Referencing www.csemag.com

Mar 27 / Stephanie Bausman

Washington Elementary School

Hanover, Pennsylvania

The project included a complete renovation of the existing two story 29,000 sf building plus a 9,000 sf gym, library and office additions designed to accommodate seven phases. HVAC design services included a feasibility study and life cycle cost analysis preceding design of a variable refrigerant system (VRV) heat pump system with energy recovery ventilators and rooftop units for the gymnasium. a new 1200 amp, 277/480 volt, 3 phase electrical service was installed. new high efficiency lighting and automatic lighting control, power circuits for receptacles and equipment were installed throughout the school. Plumbing upgrades including new low flow fixtures, a full service kitchen, and new sanitary piping and existing domestic water piping remained.

We had a less than .5% change order rate—which is unheard of. Standard budgeted is 5% to 10%!

Paragon’s services include:
Mechanical and Electrical Engineering • Design/Build

Team Leader
Mark Kelley
MKelley@peservices.org

 

Mar 27 / Stephanie Bausman

Hanover Street Elementary School

Hanover, Pennsylvania

The project included a complete renovation of the existing two story 36,000 sf building plus a 8,000 sf classroom and office additions designed to accommodate seven phases.    HVAC design services included a feasibility study and life cycle cost analysis preceding design of a variable refrigerant system (VRV) heat pump system with energy recovery ventilators and rooftop units for the gymnasium.    A new 1200 amp, 277/480 volt, 3 phase electrical service was installed.    New high efficiency lighting and automatic lighting control, power circuits for receptacles and equipment were installed throughout the school.    Plumbing upgrades including new low flow fixtures, a full service kitchen, and new sanitary piping.

Paragon’s Services include:
Mechanical and Electrical Engineering • Design/Build

Team Leader
Mark Kelley
MKelley@peservices.org

HanoverElemSchool

Mar 16 / Stephanie Bausman

Snyder’s of Hanover

pes-snyders-01New 60,300 square foot three story research and development facility targeted
for LEED Certified located in Hanover, Pennsylvania.
Electrical systems to include
primary switch addition connected to a 3.6 megawatt solar field to a new transformer and switchgear.
The new service will be stepped down from 13,200V to 480/277V main distribution switchboard with
associated step-down transformers to 208/120V distribution panels. The R&D facility also requires
power connections to various pieces of equipment essential to their daily operations. Exterior lighting
for new parking areas with full cut-off fixtures to meet the requirements of LEED SSc8. Interior lighting
design to include high efficient T5 direct/indirect lighting (with low mercury lamps) and automatic lighting
control to meet the requirements of LEED EAc1, IEQc6.1, & IDc1.1. Fire alarm, Intrusion detection,
access control, and voice/data system design are also included in the design. The mechanical system
includes high efficient direct expansion cooling variable air volume rooftop units with hot water shutoff
type VAV boxes. The hot water condensing boiler is 95% efficient, and outdoor air is precondition
through an energy recovery ventilator. The mechanical design is 20% more efficient than the ASHRAE
90.1-2007 standard. The plumbing design includes low flow urinals, dual flush toilets, and battery
operated low flow lavatories. Paragon acted as the LEED Accredited Professional and was responsible
for engineering, commissioning, energy modeling, and handing the documentation for each attempted
LEED Credit.

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Paragon’s Services Included

  • Mechanical and Electrical Engineering
  • Design/Build

Project Leader Peter Shovlin
Project Team Member Brian Martin