Berlin_-_Specifications.docx

BERLIN LAKE

REPLACEMENT OF HVAC SYSTEM IN RESOURCE MANAGERS OFFICE, MAINTENANCE BUILDING, AND RANGER STATION

Kevin

1. GENERAL REQUIREMENTS

1.1 GENERAL

The work is located in the Resource Managers Office (RMO), Maintenance Building, and Ranger Station at Berlin Lake. The RMO is located at 2030 Bonner Road, Deerfield, OH 44411, while the Maintenance Building and Ranger Stations are located at 7400 Bedell Road, Berlin Center, OH 44401.

The RMO, Maintenance Building, and Ranger Station have differing building layouts but similar HVAC systems. The work in each building consists of the removal and replacement of the existing forced air HVAC systems. The current HVAC system in the RMO consists of an oil fired furnace with no air conditioning. The current HVAC system in the Maintenance Building consists of an oil fired furnace with integrated evaporator coil connected to an outdoor AC unit. The current HVAC system in the Ranger Station consists of two identical natural gas fired furnaces with two integrated evaporator coils connected to two outdoor heat pumps.

The Contractor shall perform all work as indicated in the specifications utilizing the best standards of performance and construction for the respective trades. The Contractor shall possess experience installing similar HVAC systems and shall utilize personnel who are thoroughly trained and familiar with the indicated requirements and the methods needed for proper performance of work. The Contractor shall coordinate construction to insure uninterrupted progress and to provide an accurate fit between the work of all trades. The Contractor shall provide all equipment and materials necessary to complete the work as shown on drawings and as specified. All material provided in the performance of this contract shall be new and unused and meet the requirements of the specifications. The Contractor shall verify dimensions and clearances in the field before beginning work and ordering equipment. SEE PARAGRAPH “BID SUBMITTAL” FOR INFORMATION THAT MUST BE SUBMITTED WITH BID.

1.1.1 RESOURCE MANGERS OFFICE (RMO)

The work in the RMO consists of the removal of the existing forced air HVAC system, including the oil-fired furnace, safety disconnect, heating vent pipes, and related oil appurtenances. The Contractor shall replace the existing HVAC system with a new forced air HVAC system, which employs a split system consisting of an outdoor heat pump, indoor evaporator coil, integrated propane furnace, and interconnecting refrigerant piping and wiring. Indoor and outdoor units shall be of the same manufacturer and designed to be used together in one system. Refrigerant shall be R-410A. A new propane tank shall be installed on new concrete pad or new concrete blocking. A mechanical sketch has been included as a reference for the existing basement layout and the new work to be performed.

The existing furnace is located in the mechanical room in the basement of the RMO. The Contractor shall remove and replace the indoor furnace, which shall include: all necessary ductwork to adapt new furnace to existing ductwork; installation of new indoor evaporator coil and new refrigerant lines with R-410A refrigerant; installation of new venting for condensing type furnaces; installation of new digital programmable thermostat; new safety disconnect switch; new wiring from new outdoor disconnect switch to new outdoor heat pump, and all electrical/electronic controls necessary to complete the installation of the system. Installation of a new propane tank and propane line servicing the furnace is required. A concrete pad for the new heat pump shall be installed. The existing 175 gallon oil tank is located in a fuel room adjacent to the mechanical room and shall be capped and abandoned in place.

1.1.2 MAINTENANCE BUILDING

The work in the Maintenance Building consists of the removal of the existing forced air HVAC system, including the outdoor condensing unit, indoor evaporator coil, oil fired furnace, refrigerant lines, safety disconnect, and related oil appurtenances. The Contractor shall replace the existing HVAC system with a new forced air HVAC system, which employs a split system consisting of an outdoor heat pump, indoor evaporator coil, integrated oil fired furnace, and interconnecting refrigerant piping and wiring. Indoor and outdoor units shall be of the same manufacturer and designed to be used together in one system. Refrigerant shall be R-410A.

The existing furnace is located in the utility room of the Maintenance Building. The Contractor shall remove and replace the outdoor unit and the indoor furnace, which shall include: all necessary ductwork to adapt new oil furnace to existing ductwork; installation of new indoor evaporator coil, and new refrigerant lines with R-410A refrigerant; installation of new digital programmable thermostat; new safety disconnect switch; new wiring from new outdoor disconnect switches to new outdoor heat pump, and all electrical/electronic controls necessary to complete the installation of the system. The existing indoor evaporator coil, refrigerant lines and outdoor condensing unit are charged with R-22 refrigerant. The existing refrigerant shall be properly captured and disposed.

1.1.3 RANGER STATION:

The work in the Ranger Station consists of the removal of both existing forced air HVAC system, including the outdoor condensing units, indoor evaporator coils, gas fired furnaces, refrigerant lines, safety disconnect, heating vent pipes, and condensate drain lines. The Contractor shall replace the existing HVAC systems with two new forced air HVAC systems, which each employ a split system consisting of an outdoor heat pump, indoor evaporator coil, integrated natural gas furnace, and interconnecting refrigerant piping and wiring. Indoor and outdoor units shall be of the same manufacturer and designed to be used together in one system. Refrigerant shall be R-410A.

The two existing furnaces are located in the mechanical room of the Ranger Station. The Contractor shall remove and replace the outdoor units and the indoor furnaces, which shall include: all necessary ductwork to adapt new furnaces to existing ductwork; installation of new indoor evaporator coils and new refrigerant lines with R-410A refrigerant; installation of new venting for condensing type furnaces; installation of new digital programmable thermostats; new safety disconnect switches; new wiring from new outdoor disconnect switches to new outdoor heat pumps, and all electrical/electronic controls necessary to complete the installation of the systems. The existing indoor evaporator coils, refrigerant lines and outdoor condensing units are charged with R-22 refrigerant. The existing refrigerant shall be properly captured and disposed.

1.2 SAFETY

All work shall be performed in accordance with the Corps of Engineers Safety Manual EM385-1-1. Latest version is available online at http://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/EM_385-1-1.pdf

The Contractor shall complete and submit the Accident Prevention Plan (separate attachment) included with this specification. The following specific Personal Protective Equipment shall be required under this contract:

· Safety Shoes – All employees engaged in construction operations shall wear safety shoes meeting the requirements of EM 385-1-1, Section 05.E.

· Protective Eyewear – All workers on the site shall wear, as a minimum, protective eyewear meeting the requirements of EM 385-1-1, Section 05.A. Additional eye protection may be required in accordance with the requirements of EM 385-1-1, Section 05.B.

· Hearing Protection – Hearing protection shall be provided for workers in accordance with EM 385-1-1, Section 05.C.

· Head Protection – Head protection shall be provided for workers in accordance with EM 385-1-1, Section 05.D

1.3 QUALITY CONTROL

The quality control system shall consist of plans, procedures, and organization necessary to produce an end product which complies with the contract requirements, covers all construction operations, both onsite and offsite, and be keyed to the proposed construction sequence. The project superintendent will be held responsible for the quality of work and is subject to removal by the Contracting Officer.

The Contractor shall complete and submit the Quality Control Plan (separate attachment) included with this specification.

1.4 PROJECT SUBMITTALS

In addition to the Accident Prevention Plan and Quality Control Plan, the Contractor shall provide the following submittals for Government Approval. All items that will be incorporated into the work shall meet the Buy American Act, FAR 52.225-11. The Government reserves the right to require the Contractor to resubmit any item found not to comply with the contract. This does not relieve the Contractor from the obligation to furnish material conforming to the plans and specifications. It will not prevent the Contracting Officer from requiring removal and replacement of nonconforming material incorporated in the work. The Government has the right to reject defective supplies or services within a reasonable time after delivery by written notification to the Contractor. The Contractor shall in such event promptly replace, correct, or repair the rejected supplies or services at the Contractor’s expense.

1.4.1 Manufacturer's Literature

For all proposed materials to be furnished under this contract, the Contractor shall furnish manufacturer’s descriptive literature or catalog cuts, illustrations and specifications and other data to show the proposed equipment and materials meet the specified requirements.

The mechanical equipment submittals shall include: marked cut sheets for all proposed equipment with equipment selection clearly shown as well as accessories, thermostat selection, plenum box shop drawings and other appurtenant items related to equipment installation.

1.4.2 Bid Submittal

For evaluation purposes, the bidder shall submit for approval marked manufacturer literature or cut sheets including the manufacturer and model numbers of all equipment proposed to be furnished. All appropriate equipment features, control systems and safety items to be supplied shall be clearly indicated on the submittal.

Information on wiring, conduit, safety disconnect, and other items shall be submitted for approval to the Administrative Contacting Officer (ACO). A copy of all information provided with the bid submittal shall be submitted to the ACO.

1.4.3 Certifications

The equipment shall be furnished with all the manufacturer’s recommended controls and safety features. The equipment shall be assembled and installed in compliance with the manufacturer’s installation instructions and all applicable State and local codes and regulations. Units shall be ETL listed to UL-1995 standard.

1.4.4 Operation And Maintenance Instructions

Upon completion of the work a Service Manual covering the operation and maintenance of equipment shall be provided. The services of a competent technician shall be provided to instruct a representative of the Government in the operation and maintenance of the new HVAC equipment.

1.4.5 Warranty

The Contractor shall provide a one-year service warranty from the date of final acceptance against defects in workmanship. The Manufacturer shall provide their standard warranty for defects in parts and materials beginning on the date of installation.

1.4.6 Verification Of Field Conditions

The Contractor shall verify all dimensions and conditions in the field and shall advise the Contracting Officer of any discrepancy before performing any work.

1.5 COORDINATION MEETING AND POINTS OF CONTACT

Prior to commencement of any work being performed on site, the Contractor shall participate in a teleconference with the Administrative Contacting Officer (ACO) and the Lake Resource Manager.

· Berlin Lake Resource Manager – Mr. Kevin Heatley 330-654-0865

· ACO – Denise Polizzano, Denise.M.Polizzano@usace.army.mil 412-395-7680

1.6 PROJECT/SITE CONDITIONS

1.6.1. Work Areas

The Contractor shall be fully responsible for determining the methods used to transport materials and equipment to and from the areas as well as the removal of waste materials from such spaces. The Contractor shall ensure that his operations will not interfere with the operation of the project or the duties of project personnel.

1.6.2 Time of Performance

The Contractor shall confine all operations at the work site between the hours of 7:30 AM and 4:00 PM, Monday through Friday, unless otherwise approved. Work will not be permitted on weekends or Federal holidays unless otherwise approved.

1.6.3 Period of Performance

All work under this contract shall be completed no later than 120 calendar days after receipt of Notice To Proceed.

1.7 PROTECTION OF GOVERNMENT PROPERTY

The Contractor shall protect all government property during the performance of this contract. All damage to existing government property as a result of the Contractors work shall be repaired or replaced to the satisfaction of the Contracting Officer.

1.8 PROTECTION OF PERSONNEL

The Contractor shall insure that adequate measures are in place to protect workers, facility operation personnel and the public from injury due to the operations being performed. All protective measures shall be in accordance with EM 385-1-1.

1.9 SECURITY REQUIREMENTS

1.9.1 Access and General Protection and Security Policy and Procedures

The Contractor and all associated subcontractors' employees shall comply with applicable installation, facility, and area commander installation and facility access and local security policies and procedures (provided by the Government Representative). The Contractor shall also provide all information required for background checks to meet installation access requirements to be accomplished by the installation the USACE Security Office. The Contractor workforce must comply with all personal identity verification requirements as directed by DoD, HQDA, and/or local policy. In addition to the changes otherwise authorized by the changes clause of this contract, should the Force Protection Condition (FPCON) at any individual facility or installation change, the Government may require changes in Contractor security matters or processes. The Contractor must submit the full name, Social Security Number, Date of Birth, and Place of Birth for all associated Contractor or subcontractor employees to the USACE Security Specialist Paul M. Surace, 412-395-7162, paul.m.surace@usace.army.mil or Stephen Davidson, 412-395-7504, stephen.davidson@usace.army.mil. The District retains the right to deny any Contractor and subcontractor employee from working on one of its contracts based on final background investigation results.

1.9.2 Access Control

All contract employees, including subcontractor employees who are not in possession of the appropriate security clearance, will be escorted in areas where they may be exposed to classified and/or sensitive materials and/or sensitive or restricted areas.

1.9.3 Instant Verification of Employment Eligibility (E‐Verify)

The Contractor must pre‐screen Candidates using the E‐verify Program (http://www.uscis.gov/e-verify) website to meet the established employment eligibility requirements. The Vendor must ensure that the Candidate has two valid forms of Government issued identification prior to ensure the correct information is entered into the E‐verify system. An initial list of verified/eligible Candidates must be provided to the COR no later than 3 business days after the initial contract award.

1.9.4 Employee Identification and Background Check

The Contractor shall be responsible for furnishing an identification badge/card to each employee prior to the employee working on-site and for requiring each employee engaged on the work to display identification. Identification shall consist of name tags with the name of the Contractor and the employee's name. Additionally, a valid state driver's license or other Government-issued photo identification card is required for positive identification. Each employee will be subject to a background check in accordance with "Homeland Security Presidential Directive 12: Policy for a Common Identification Standard for Federal Employees and Contractors" (HSPD-12). Only those individual employees that were specifically identified and approved will be cleared to work on Government property.

2. MATERIALS

Each major component of equipment shall be furnished with a nameplate containing the manufacturer's name, address, type or style, model or serial number, and catalog number, with ENERGY STAR label as applicable.

2.1 NEW SPLIT SYSTEM HEAT PUMPS

Unit shall be an air-cooled, split system which employs an outdoor heat pump, a separate indoor unit, and interconnected refrigerant piping. Heat pump shall conform to applicable Underwriters Laboratories (UL) standards including UL 1995. Unit shall be rated in accordance with AHRI 210/240. The heat pump shall be Energy Star rated with minimum SEER of 14 utilizing R-410A refrigerant. Indoor and outdoor unit shall be of the same manufacturer and designed to be used together in one system with the furnace.

Heat pumps shall be equipped with high-efficiency scroll type compressor and high pressure and loss of charge protection. Unit shall be digitally controlled with on-board diagnostics and shall be factory run tested. Fan and condenser motor shall be permanently lubricated and totally enclosed. Outdoor unit shall be equipped with 6 inch snow legs for mounting on concrete slab.

2.1.1 RMO HEAT PUMP

The heat pump shall be similar or equal to a Carrier Model 25HCE436 and shall match the 3 ton capacity of the evaporative cooling coil. The electrical requirement for the outdoor unit is 208/230VAC, MCA 20.0 Amps, MOCP 30 Amps. The indoor cooling coil shall be similar or equal to a Carrier CNPVP3617.

2.1.2 MAINTENANCE BUILDING HEAT PUMP

The heat pump shall be similar or equal to a Carrier Model 25HCE436 and shall match the 3 ton capacity of the evaporative cooling coil. The electrical requirement for the outdoor unit is 208/230VAC, MCA 20.0 Amps, MOCP 30 Amps. The indoor cooling coil shall be similar or equal to a Carrier CNPVP3621.

2.1.3 RANGER STATION HEAT PUMPS

There are two heat pumps serving the ranger station. HP-1 is interconnected with the furnace serving the southwest end of the building. HP-2 is interconnected with the furnace serving the northeast end of the building. Existing heat pumps are identical.

The heat pumps shall be similar or equal to a Carrier Model 25HCE436 and shall match the 3 ton capacity of the evaporative cooling coil. Electrical requirement for each heat pump is 208/230VAC, MCA 20.0 Amps, MOCP 30 Amps. The indoor cooling coil shall be similar or equal to a Carrier CNPVP3617.

2.2 FURNACES

Indoor furnace and heat pump shall be of the same manufacturer and designed to be used together in one system. RMO and Ranger Station furnaces shall consist of a 1-pipe vent configuration and the furnaces shall be the high efficiency, condensing type in accordance with CSA/AM Z21.47. The RMO furnace shall be field convertible to handle propane gas as the working fuel. Furnaces shall be upflow and the design shall be certified by the AMERICAN GAS ASSOCIATION LABORATORIES (AGA). Furnace controls shall be provided by the furnace manufacturer as an integral part of the furnace. Electronic controls shall be provided. The RMO and Ranger Station furnace controls shall allow for variable speed operation.

2.2.1 RMO FURNACE

The existing oil furnace is located in the basement mechanical room of the building as indicated on the attached mechanical sketch. The existing electrical system is 120/240VAC, 1ph, 60 Hz. The electrical requirement for the furnace is 115VAC, Unit Ampacity of 13.0 Amps, MOCP 15 Amps. The new indoor furnace shall be field convertible for propane, provide a minimum output of 76,000 BTUH, and shall be Energy Star rated with an AFUE of 95% or greater. Blower shall be centrifugal type and shall be statically and dynamically balanced. Blower motor shall be variable speed or multi-speed design. The gas furnaces shall be similar or equal to a Carrier Model 59MC580-16 and shall be balanced to supply approximately 1,200 CFM at 0.5 in wc. static pressure.

2.2.2 MAINTENANCE BUILDING FURNACE

The existing oil furnace is located in the utility room of the building. The existing electrical system is 115/220VAC, 1ph, 60 Hz. The electrical requirement for the furnace is 120VAC and MOCP 15 Amps. The new indoor furnace shall be oil fired, provide a minimum output of 84,000 BTUH, and shall be Energy Star rated with an AFUE of 82% or greater. Blower shall be direct drive and shall be statically and dynamically balanced. Blower motor shall be variable speed or multi-speed design. The oil furnace shall be similar or equal to a Carrier CBMAAA036105AABE with 0.65 gph nozzle and shall be balanced to supply approximately 1,100 CFM at 0.5 in wc. static pressure.

2.2.3 RANGER STATION FURNACES

There are two natural gas furnaces serving the ranger station. One furnace serving the southwest end of the building and one furnace serving the northeast end of the building. The existing furnaces are identical. The existing furnaces are located in a mechanical room of the building. The existing electrical system is 120/240VAC, 1ph, 60 Hz. Blower shall be centrifugal type and shall be statically and dynamically balanced. Blower motor shall be variable speed or multi-speed design.

The electrical requirement for the furnaces is 115VAC, Unit Ampacity of 13.0 Amps, MOCP of 15 Amps. The new indoor furnaces shall provide a minimum output of 76,000 BTUH and shall be Energy Star rated with an AFUE of 95% or greater. The furnaces shall be similar or equal to a Carrier Model 59MC5A80-16 and shall be balanced to supply approximately 1,300 CFM at 0.5 in wc. static pressure.

2.3 FLUE AND VENT PIPING

Flue and vent piping material shall be in accordance with manufacturer’s recommendations, ICC IMC and NFPA 54. The Contractor shall provide all the necessary vent piping, flashing and vent caps required to comply with venting requirements. Direct venting shall be used for condensing type boilers. Both the air intake and exhaust vents shall be sized in accordance with manufacturer recommendations. Maintenance Building flue shall be reused.

2.4 AIR FILTERS

Air filters shall be listed in accordance with requirements of UL 900.

2.5 METAL DUCTWORK

All aspects of metal ductwork construction, including all fittings and components, shall comply with SMANCA 1966 unless otherwise specified.

2.6 RMO LIQUID GAS PROPANE TANK AND PIPING

A liquid propane tank of 500 gallon capacity shall be provided as part of this contract for the Resource Managers Office as indicated on the attached sketch. The contractor is responsible for contacting a nearby propane gas supplier and installing the tank in compliance with NFPA 58. The tank shall be a 500 gallon capacity NFPA 58 compliant container with appurtenances, system working pressure, minimum design pressure, that is LPG vapor pressure at 100 degrees F. Tank shall be provided with piping, fittings, and marking conforming to NFPA 58. The tank shall be provided with valves conforming to UL 125 and UL 842 and pipe unions conforming to UL 860. Piping for underground sections of the system shall be thermoplastic or copper and schedule 40 steel piping above ground. Installation of new propane tank shall be supported with concrete blocks and leveled. The Contractor is responsible for contacting a nearby propane gas supplier, installing the tank, and filling the tank.

2.7 REFRIGERANT PIPING, VALVES, FITTINGS, AND ACCESSORIES

Refrigerant piping, valves, fittings, and accessories shall be in accordance with ASHRAE 15 & 34 and ASME B31.5. Refrigerant piping, valves, firings, and accessories shall be compatible with the fluids used and capable of withstanding the pressures and temperatures of the service. Valve bodies shall be of brass, bronze, steel, or ductile iron construction and shall be designed, manufactures, and tested specifically for refrigerant service. Necessary supports shall be provided for all equipment, appurtenances, and pipe as required, including frames or supports for compressors, pumps, condensers, and similar items.

2.8 SAFETY SWITCH

New safety disconnect switch for outdoor condensing units shall comply with NEMA KS 1, heavy-duty type, outdoor rated, NEMA type 3R. Switch shall be of the quick-make, quick-break type. Switch construction shall be such that, when the switch handle in the "ON" position, the cover or door cannot be opened. Cover release device shall be coin-proof and be so constructed that an external tool shall be used to open the cover. Provision shall be made to lock the handle in the "OFF" position, but the switch shall not be capable of being locked in the "ON" position. Wiring to outdoor condensing unit shall be in flexible metallic liquidtite conduit. All wiring shall be copper, and as recommended by the manufacturer for the proposed equipment.

2.9 SEED MIXTURE

Seed mixture shall consist of the following:

Festuca Arundinacea Fescue, Kentucky 31 60 98 Var. Kentucky 31

Poa pratensis Kentucky Bluegrass 30 98

Lolium perenne Perennial Ryegrass 10 98

3. EXECUTION

3.1 GENERAL

The HVAC equipment shall be assembled and installed in compliance with the manufacturer’s installation instructions. Electrical installation shall conform to requirements of the National Electric Code (NFPA 70) latest edition. All wire or cable shall be copper. Equipment shall be located as indicated and in such a manner that working space is available for all necessary servicing, such as a shaft removal, replacing, or adjusting drives, motors, or shaft seals, air filters, access to automatic controls, humidifiers, and lubrication. New digital programmable thermostats shall be installed at location of original in each building. Thermostat shall be compatible with the equipment proposed, and wired in accordance with the manufacturer’s instructions for the particular installation.

3.2 FURNACE INSTALLATION

New furnaces shall be installed at location of existing furnaces inside the building. The Contractor shall adapt the new furnaces and indoor coils to existing ductwork with new custom made galvanized steel sheet metal plenums and new flexible duct connectors. New ductwork shall be insulated with R-5 insulation. New PVC exhaust vent pipes for condensing furnaces shall be concentric type, installed to outside wall and terminated in accordance with manufacturer recommendations. New drain lines with trap and cleanout shall be installed.

3.3 OUTDOOR UNIT INSTALLATION

New outdoor units at the Ranger Station and Maintenance Building shall be installed on slabs for existing outdoor units. New safety disconnects for the outdoor units shall be installed to replace the existing safety disconnects. Existing refrigerant lines shall be removed and disposed of. New refrigerant lines shall be installed through the same spaces as existing with new sealant. The Contractor shall replace the entire copper refrigerant line set with new copper lines, vacuum the system and fill with the recommended amount of refrigerant. Open ends of new refrigerant lines or equipment shall be properly capped or plugged during installation to keep moisture, dirt, or other foreign material out of the system. Piping shall remain capped until installation. All refrigerant in the existing system shall be properly captured in accordance with Federal, State and Local regulations. Flexible elastomeric cellular insulation of minimum 1/2-inch thickness shall be applied to the refrigerant suction line.

A new cast in place or precast concrete slab shall be installed for the new RMO outdoor unit in accordance with the outdoor unit manufacturer’s installation instructions. New electrical service disconnect switch and refrigerant lines for the outdoor unit shall be installed. Penetrations thru walls shall be made in a neat and workmanlike manner and shall be sealed at the wall to prevent the entry of water, insects, or rodents.

3.4 PIPING

Piping installation shall be in compliance with IMC 2012, NFPA 54 National Fuel Gas Code and NFPA 58 Liquefied Petroleum Gas Code. Piping shall be routed to the heating equipment as shown in the drawings. Piping installed aboveground shall be securely supported and located where it is protected from physical damage. Where piping is encased in a protective pipe sleeve, the annular space between the gas piping and the sleeve shall be sealed at the wall to prevent the entry of water, insects, or rodents. Piping for other than dry gas conditions shall be sloped not less than 1⁄4 in. in 15 ft to prevent traps. For other than dry gas conditions, a drip shall be provided at any point in the line of pipe where condensate could collect. Where required by the authority having jurisdiction or the serving gas supplier, a drip shall also be provided at the outlet of the meter. This drip shall be installed so as to constitute a trap wherein an accumulation of condensate shuts off the flow of gas before it runs back into the meter. All drips shall be installed only in such locations that they are readily accessible to permit cleaning or emptying. A drip shall not be located where the condensate is likely to freeze. Prior to acceptance and initial operation, all piping installations shall be inspected and pressure tested to determine that the materials, design, fabrication, and installation practices comply with the requirements of NFPA 54. Pipes passing through concrete or masonry walls or concrete floors shall be provided with pipe sleeves and sealed with watertight sealant.

3.4.1 Indoor Piping

Piping shall be supported with metal pipe hooks, metal pipe straps, metal bands, metal brackets, metal hangers, or building structural components, suitable for the size of piping, of adequate strength and quality, and located at intervals so as to prevent or damp out excessive vibration. Piping shall be anchored to prevent undue strains on connected appliances and equipment and shall not be supported by other piping. Pipe hangers and supports shall conform to the requirements of ANSI/MSS SP-58

Spacing of supports in gas piping installations shall not be greater than shown below:

½” pipe ≥ 6 ft ¾” pipe ≥ 8ft

Each appliance connected to a piping system shall have an accessible, approved manual shutoff valve with a non-displaceable valve member, or a listed gas convenience outlet. Appliance shutoff valves and convenience outlets shall serve a single appliance only. The shutoff valve shall be located within 6 ft of the appliance it serves. Where a connector is used, the valve shall be installed upstream of the connector. A union or flanged connection shall be provided downstream from the valve to permit removal of appliance controls. Where a sediment trap is not incorporated as a part of the appliance, a sediment trap shall be installed downstream of the appliance shutoff valve as close to the inlet of the appliance as practical at the time of appliance installation. The sediment trap shall be either a tee fitting with a capped nipple in the bottom outlet as illustrated in NFPA 54, Chapter 9, Figure 9.6.7 or other device recognized as an effective sediment trap.

3.4.2 Exterior/Underground Piping

Underground gas piping shall be installed with sufficient clearance from any other underground structure to avoid contact therewith, to allow maintenance, and to protect against damage from proximity to other structures. Contractor shall provide excavation and backfilling as necessary. Underground piping shall be installed a minimum of 18 inches deep and 12 inches wide. Where a minimum of 18 in. of cover cannot be provided, the pipe shall be installed in conduit or bridged (shielded). The trench shall be graded so that the pipe has a firm, substantially continuous bearing on the bottom of the trench. Bedding shall be placed at the bottom of the trench below the piping to a minimum compacted depth of 4 inches. Initial backfill shall be placed to a minimum 4 inches compacted depth above the piping, and the remainder of the trench backfilled with material consisting of clean excavated soil without rocks, broken concrete, frozen chunks & other rubble that would damage or break piping. An electrically continuous corrosion resistant tracer wire (minimum AWG 14) or tape shall be buried with plastic pipe to facilitate locating. One end shall be brought aboveground at a building wall or riser.

3.4.2.1 Metal to Plastic Pipe Connections

Connections made between metallic and plastic piping shall be made with fittings conforming to one of the following: (1) ASTM D 2513, Category I transition fittings, (2) ASTM F 1973, or (3) ASTM F 2509.

3.4.2.2 Plastic Piping Installation

Polyethylene and polyamide pipe, tubing, and fittings shall be installed outdoors underground only and in accordance with the manufacturer’s installation instructions. Each imperfection or damaged piece of polyamide or polyethylene pipe shall be replaced by fusion or mechanical fittings. Repair clamps shall not be used to cover damaged or leaking sections. Polyamide and polyethylene piping shall be installed in accordance with the following:

(1) Thrust forces caused by contraction or expansion of the piping or by anticipated external or internal loading shall be minimized.

(2) Each joint shall be designed to sustain the thrust forces.

3.5 LIQUID PROPANE GAS TANK

Propane tank shall be installed a minimum of 10 feet from the building on masonry or other noncombustible structural supports in accordance with NFPA 58. A sketch depicting location requirements for ASME containers extracted from NFPA 58, Appendix I is attached to the end of the specifications. The tank and gas system shall be installed in conformance with the manufacturer's recommendations and applicable provisions of NFPA 54, NFPA 58, AGA XR0603, and as indicated. The tank shall be mounted on cast in place or precast concrete slab or concrete blocks as standard with the local gas supplier furnishing the tank.

The propane tank installation shall include tank delivery to the job site, installation and placement of tank in location shown on the drawings, mounting supports, filling the propane tank, and connecting the tank to the newly installed heating equipment. The tank installation shall comply with NFPA 54 National Fuel Gas Code and NFPA 58 Liquefied Petroleum Gas Code. The contractor is responsible to coordinate the regulated tank pressure with the equipment demand pressure. The contractor is responsible to turn over the account information to the Resource Manager once the installation is complete for refueling purposes.

3.6 ELECTRICAL WORK

Electrical work shall conform to the requirements of the latest edition of the National Electrical Code (NFPA 70).

3.7 START-UP AND TESTING.

Upon completion and prior to acceptance of the installation, the Contractor shall perform necessary system start-up and operational tests to demonstrate satisfactory functional and operating efficiency. HVAC control systems shall be tested to ensure that control elements are calibrated, adjusted, and in proper working condition. Thermostats shall be programmed in consultation with the Resource Manager.

3.8 DISPOSAL

All materials removed in the performance of this contract and not reused shall become the property of the Contractor and be disposed of offsite in accordance with Federal, State and Local regulations. Existing oil tank and appurtenances including the oil pump, filter, and piping shall be removed and disposed of at a properly permitted commercially available disposal facility in accordance with all Federal, State, and local statutes, laws and regulations. Used oil shall be drained. Used oil to be discarded must be disposed at a properly permitted commercially available disposal facility in accordance with 40 CFR 279 and all State, and local statutes, laws and regulations.

3.9 CLEANUP, SEEDING AND MULCHING

The Contractor shall ensure that the work areas are maintained in a neat and orderly manner. At no time shall the Contractor allow materials to accumulate except as otherwise approved, and all areas shall be maintained clean and free debris. At the completion of all work, all work areas shall be restored to original condition and the areas cleaned of all foreign material. All outdoor areas that have been rutted or otherwise disturbed shall be regraded, smoothed and reseeded with perennial grass seed mixture specified previously and mulched with a suitable weed free straw. All mud and debris tracked onto paved areas shall be removed.

REPRESENTATIVE PHOTOS

RESOURCE MANAGER’S OFFICE (RMO):

EXISTING FURNACE IN MECHANICAL ROOM SHOWING SUPPLY PLENUM AND RETURN DUCTWORK

EXISTING RETURN DUCT EXISTING FLUE TO BE REPLACED

EXISTING OIL LINES AND OIL FILTER TO BE REMOVED

OUTSIDE OF FURNACE ROOM WALL AND POSSIBLE LOCATION OF NEW OUTDOOR UNIT. OIL FILL AND VENT PIPES VISIBLE AT FAR LOWER RIGHT CORNER OF BUILDING.

EXISTING OIL TANK TO BE CAPPED AND ABANDONED

MAINTENANCE BUILDING:

EXISTING FURNACE IN MECHANICAL ROOM SHOWING RETURN DUCTWORK. FURNACE TO BE REPLACED.

REPLACED

EXISTING SUPPLY PLENUM AND REGISTER

EXISTING OUTDOOR AC UNIT, REFRIGERANT LINES,

AND DISCONNECT SWITCH TO BE REPLACED.

EXISTING OIL TANK TO REMAIN

RANGER STATION:

EXISTING RETURN DUCTWORK EXISTING FLUE AND SUPPLY DUCTWORK OF FURNACE SERVING SOUTHWEST END

EXISTING SUPPLY DUCTWORK AND FLUE OF FURNACE SERVING THE NORTHEAST END. EXISTING FLUES TO BE REPLACED AND DUCTWORK ADAPTED FOR NEW FURNACES

EXISTING OUTDOOR HEATPUMPS TO BE REPLACED

EXISTING DISCONNECT SWITCHES TO BE REPLACED

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