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HomeMy WebLinkAbout23-0800-HVAC-Systems-Commissioning_Rev_1Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 23 0800 HVAC Systems Commissioning 1 of 2 SECTION 23 08 00 HVAC SYSTEMS COMMISSIONING PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and General Provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section. 1.2 RELATED SECTIONS A. Division 23 – Heating, Ventilating and Air Conditioning B. Division 28 - Electronic Safety and Security Systems C. Section 019113 – General Commissioning Requirements 1.3 REQUIRMENTS A. The Commissioning process requires the participation of Division 23, Mechanical, to ensure that all systems fulfill the functional and pre-functional requirements set forth in these construction documents. The general commissioning requirements and coordination are detailed in Section 019113. Division 23, HVAC, shall fulfill commissioning responsibilities assigned to division 23 in accordance with Section 019113. PART 2 - PRODUCTS (NOT USED) PART 3 - EXECUTION 3.1 PRE-FUNCTIONAL CHECKLISTS A. Pre-functional checklists assist in the process to document that the equipment and systems are installed properly. B. The contractor will be provided with construction checklists from the CA for completion. The contractor shall complete the checklists as provide the CA with completed copies in accordance with 019113. C. See attached for a sample pre-functional performance test checklist, attached is included only to provide sample of a typical process and scope. 3.2 FUNCTIONAL PERFORMANCE TESTING A. Intent of functional performance testing is to prove thru functional test procedures proper system operation. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 23 0800 HVAC Systems Commissioning 2 of 2 B. The contractor will be provided with functional performance test procedures to perform while CA witnesses. The contractor shall perform functional tests in accordance with 019113. C. See attached for a sample functional performance test checklist, attached is included only to provide sample of a typical process and scope. 3.3 PREFUNCTIONAL CHECKLISTS AND FUNCTIONAL PREFORMANCE TESTING A. Pre-Functional Checklists and Functional performance testing procedures will be performed on the following system types. (Pre Functional and Functional performance testing requirements are in addition to and do not replace any testing required elsewhere in Division 23 or by applicable codes.) Equipment specifically marked as such below shall be provided with start-up of equipment by factory-authorized service representative. 1. Hot Water System including boilers, pumps, piping and related equipment/accessories. 2. Chilled Water System including chiller, pumps, piping and related equipment/accessories. 3. Rooftop Units/Air Handling Units 4. Displacement Terminal Units 5. Induction Units 6. Fan Coil Units 7. Ductless Split Systems 8. Unit Heaters, Cabinet Unit Heaters 9. Radiation including panels and fin tube. 10. Exhaust Fans including kitchen hood systems 11. Spot check of testing adjusting and balancing 12. Building Automation System 3.4 SAMPLE CHECKLISTS A. See Attached. End of Section [Project Name] Commissioning Services [City, State] Consulting Engineering Services, Inc. Page# Functional Performance Test 1/21/2021 Hot Water Heating System Contractor Checklist and Functional Test Procedures HOT WATER SYSTEM including Boilers, Pumps and all related components Please refer to the Master Deficiency and Resolution Log for numbers referenced in parentheses, which will indicate deficiencies discovered and resolved. 1. Participants Discipline Name Company CxA Mechanical Controls TAB Plumbing Electrical Date Returned to CxA Check Description ☐ The above equipment and systems integral to them are complete and ready for functional testing. ☐ All control system functions for this and all interlocking systems are programmed and opera-ble per contract documents, including final setpoints and schedules with debugging, loop tun- ing and sensor calibrations completed. ☐ Test and balance completed and approved for the hydronic systems and terminal units con- nected ☐ All A/E punchlist items for this equipment corrected. ☐ Safeties and operating ranges reviewed. ☐ Schedules and reviewed • This checklist does not take the place of the manufacturer’s recommended checkout and startup procedures. • Items that do not apply shall be noted with the reasons on this form (N/A = not applicable, BO = by others). • Contractors assigned responsibility for sections of the checklist shall be respon- sible to see that checklist items by their subcontractors are completed and checked off. 3. Installation Checks Boilers and Sys- tem [Project Name] Commissioning Services [City, State] Consulting Engineering Services, Inc. Page# Functional Performance Test 1/21/2021 Hot Water Heating System Check Equip Tag B-1 B-2 COMMENTS General Installation Permanent labels affixed ☐ ☐ Casing condition good: no evidence of damage ☐ ☐ Concrete pad provided (4-6”) to ensure proper condensate drainage ☐ ☐ Thermal insulation properly installed ☐ ☐ Instrumentation installed according to specification (ther- mometers, pressure gages, flow meters, etc.) ☐ ☐ Clean up of equipment completed per contract documents ☐ ☐ Installation of combustion air fan and associated motorized damper ☐ ☐ Relief valve on boiler properly piped ☐ ☐ Boiler drain valves ☐ ☐ ASME Pressure relief valve ☐ ☐ Sensors calibrated ☐ ☐ HWR Manual Isolation Valve ☐ ☐ HWR Main Temperature Sensor-ATC ☐ ☐ HWS Main Temperature Sensor-ATC ☐ ☐ HWS Main isolation valve upstream of Air Separator ☐ ☐ HWR Isolation Valves to Boilers ☐ ☐ Emergency Boiler Switch at Door ☐ ☐ Exhaust vent pipe completely seased to prevent leakage of cumbustion products ☐ ☐ Manual Gas shutoff valve in place in case of overheating or gas supply failure. Location apparent ☐ ☐ Minimum clearance has been met as indicated Sides: 24 Inches Front: 24 Inches Rear: 30 Inches Top: 18 Inches ☐ ☐ Floor drain in place or condensate pump used to remove condensate ☐ ☐ Condensate drain trap associated fitting and drain line are removable for maintenance ☐ ☐ If using a sealed combustion air configuration, each unit must have a min of 8 inch diameter connection at unit. ☐ ☐ Valves and Piping and associated equipment Expansion tank installed ☐ Expansion Tank Auto Air vent ☐ Expansion Tank drain valve installed ☐ Expansion Tank Isolation Valve ☐ Air Separator in place between boilers and pumps ☐ [Project Name] Commissioning Services [City, State] Consulting Engineering Services, Inc. Page# Functional Performance Test 1/21/2021 Hot Water Heating System Boilers and Sys- tem Check Equip Tag B-1 B-2 COMMENTS Air Separator high capacity air vent installed ☐ Air Seperator Drain in place ☐ Air Separator between boiler hot water supply and pump suc- tion ☐ Piping arrangement installed per the contract documents ☐ Installation of chemical pot feeder and support devices ☐ Pipe fittings complete and pipes properly supported by floor, ceiling or walls and NOT by unit ☐ Pipes properly labeled ☐ Pipes properly insulated ☐ Valves properly labeled ☐ Valves installed in proper direction ☐ Piping system properly flushed ☐ No leaking apparent around fittings ☐ PRV - Automatic Fill and Check Valve installed on Makeup Water ☐ Pressure gauge installed after PRV on Cold Water Fill ☐ Glycol makeup Units fill valve in place ☐ Glycol makeup manaully adjustable pressure switch ☐ Glycol makeup Control Panel in place ☐ Glycol makeup low water pilot light in place ☐ Glycol makeup manual shutoff on CW makeup ☐ Glycol makeup High level switch dry contacts in place to alarm at BMS ☐ Glycol makeup Low level switch dry contacts in place to alarm at BMS ☐ Glycol Makeup pump and piping (w/ instrumentation) accord-ing to detail. ☐ Chemical pot feeder installed as per detail ☐ Electrical and Controls Power disconnects in place and labeled ☐ ☐ Electrical conduit and hardware does not interfere with re- moval of any unit covers or inhibit maintanance/service ☐ ☐ No other devices share the same electrical circuit as the boilers ☐ ☐ All electric connections tight ☐ ☐ Safeties in place and operable ☐ ☐ Low water cut-off switch ☐ ☐ [Project Name] Commissioning Services [City, State] Consulting Engineering Services, Inc. Page# Functional Performance Test 1/21/2021 Hot Water Heating System Pumps Check Equip Tag HWP-1 HWP-2 COMMENTS General Installation Permanent labels affixed ☐ ☐ Casing condition good: No Damage ☐ ☐ Vibration Isolation in place ☐ ☐ Piping and Valves Common pressure gauge installed ☐ ☐ Piping insulated ☐ ☐ Piping labeled ☐ ☐ Associated valve appropriately labeled with valve tags ☐ ☐ Triple Duty Valve installed ☐ ☐ Isolation Valves intalled as per documents ☐ ☐ Drain installed with ☐ ☐ Manual air vent installed ☐ ☐ Electrical and Controls VCF installed as per contract documents ☐ ☐ Disconnect in place and labeled ☐ ☐ All control devices installed properly ☐ ☐ The checklist items all successfully completed for given trade ☐YES ☐NO 4. Performance Tests Test Compli- ance/Non- Compliance Compli- ance/Non- Compliance Comments Equip Tag B-1 B-2 Performance Tests Calibration of BAS HWS and HWR ☐ Calibration of outdoor air sensor ☐ Capability of the temperature control system to stop/start boiler. Verify the motorized damper on combustion air fans opens prior to the start of the boiler. ☐ ☐ Hot water reset schedule capability at BAS OA 20ºF = 150ºF OA 55ºF = 110ºF ☐ Record sequencing and/or operation of boilers when system is activated such that both boilers operate to maintain set- point. ☐ ☐ [Project Name] Commissioning Services [City, State] Consulting Engineering Services, Inc. Page# Functional Performance Test 1/21/2021 Hot Water Heating System Test Compli- ance/Non- Compliance Compli- ance/Non- Compliance Comments Equip Tag B-1 B-2 Boiler safeties, staging and modulation shall be controlled thru the boler control panel provided by the MFG ☐ Boilers operate in parallel ☐ Boilers are off when outdoor air is above 65 deg. F. adj. ☐ Boiler start time delay to prevent short cycling. ☐ Operation of hi water temp safeties for both boilers. ☐ ☐ Operation of low water cut off boiler Safeties for both boilers ☐ ☐ Boiler alarm bells in place and functional?? ☐ ☐ Installation of a low temperature water alarm signal at the BAS. Record setpoint. ☐ ☐ Boiler/Burner Emergency Shutdown Switches at each entry door hardwired to boiler and burner controls ☐ Burner status in place ☐ ☐ Operating status of pumps ☐ ☐ Startup report performed only by manufacturer trained startup and service personnel has been provided and in- cludes the performance of the combustion air calibration, proper set up of controls and limits, proper setup of modes of operation, and testing of all safety devices ☐ ☐ Graphic (Operator Station) Display Compliance or Non Compliance Comment Equipment identification ☐ Boiler Enable/Disable ☐ Boiler(s) alarm status ☐ Supply water temperature sensor ☐ Supply water temperature setpoint ☐ Return water temperature sensor ☐ Pump Start/Stop ☐ Pump(s) Status ☐ Pump(s) VFD status ☐ Pump(s) VFD speed ☐ Pump(s) VFD alarm ☐ Differential pressure setpoint ☐ Differential pressure status ☐ Bypass valve command ☐ Outside air temperature indication ☐ Glycol Unit Identification ☐ [Project Name] Commissioning Services [City, State] Consulting Engineering Services, Inc. Page# Functional Performance Test 1/21/2021 Hot Water Heating System Glycol Pump Status ☐ Glycol high level alarm (thru dry contacts) ☐ Glycol low level alarm (thru dry contacts) ☐ Glycol percentage alarm ☐ The checklist items all successfully completed for given trade ☐YES ☐NO 5. Functional Testing Record Test # Test Name Test Procedure (including special condi- tions) Expected Response Pass Y/N Heating System B-1 B-2 1 Heating Sys- tem Enable Override OA sensor and set below 60 deg F Lead Boiler, associated Lead Primary Pump and Lead Secondary Hot Water Pump shall be energized on along with the oil transfer pumps 2 Heating Sys- tem Disable Override OA sensor and set above 60 deg F All boilers shall be disabled along with their associated primary pumps and the lead secondary pump. 3 Operating control Change parameters of the reset schedule to simulate a change in need for hot water supply temperature to the loop. Parameter setting shall be as follows but fully adjustable. OA Supply Temp 20ºF 150ºF 55ºF 110ºF Ensure the BMS recalcu- lates the system hot water setpoint. Boiler shall operate and burner shall control via internal controls until build- ing hot water supply temper- ature in the common header reaches the setpoint (based on a reset schedule inverse- ly proportional to outside air temperature 4 Low Water Level Fault Simulate a low water condi- tion by tripping the low wa- ter cutout switch Burner shuts down and alarm sent to BMS [Project Name] Commissioning Services [City, State] Consulting Engineering Services, Inc. Page# Functional Performance Test 1/21/2021 Hot Water Heating System Test # Test Name Test Procedure (including special condi- tions) Expected Response Pass Y/N Heating System B-1 B-2 5 High Water Temperature Fault Adjust the automatic over- temperature switch on front of unit. Lower the temp limit switch setting to match the displayed outlet temp The unit should shut down. The fault indicator should start flashing and a ahight water temp switch open fault message should be dis- played. Be sure to return the switch to its original setting to reset. 6 Flame Fault Set the On/Off switch to OFF. Place the unit in the Manual Mode and set the firing rate between 14% and 30%. Close the manu- al gas shutoff valve The unit shall shut down 7 Boiler and Burner Emergency Shutdown Control Interrupt each burner safety circuit to turn off the boil- er/burner by manually op- erated remote shutdown switch located at each boil- er room door Burner/boiler shall shutdown as it the switch is hardwired to the boiler/burner controls 8 Autofill Make-up Unit NOTE: Unit is controled through factory supplied controls. Ensure that the following is happening When the system pressure drops below setpoint of the pressure switch, the pump shall start and add fluid from the tank into the system. When the pressure setpoint is satisfied, the pump shall stop. A low condition (low level switch) will stop or not allow the pump to start. Pass Y/N Test # Test Name Test Procedure (including special condi- tions) Expected Response HWP-1 HWP-2 [Project Name] Commissioning Services [City, State] Consulting Engineering Services, Inc. Page# Functional Performance Test 1/21/2021 Hot Water Heating System Pass Y/N Test # Test Name Test Procedure (including special condi-tions) Expected Response HWP-1 HWP-2 11 Secondary Pumps Ena- ble Enable the heating system Lead secondary pump shall operate continuously when activated. 12 Secondary Pump Disa- ble Disable the heating system The secondary pumps shall not run when the heating system is not energized. 13 Secondary Pump Failure Manually fail the lead sec- ondary pump at VFD An alarm shall be sent to the BMS and the lag pump shall be enabled and shall run continuously 14 Secondary Pump Lead/Lag Swap Set up trends on Secondary Pump Status. Pumps shall alternate to equalize runtime. Selection of the lead and lag pump shall be evaluated on a weekly basis. The pump with the elast amount of run time is lead. The remaining is the lag. Manually swap the pumps via BMS controls Ensure that the lead sec- ondary pump swaps 15 Secondary Pump Speed Change the differential pressure (dp) setpoint The pumps are controlled by (2) system dp sensors thru the associated VFD’s. The controller will monitor both sensors and will control to maintain the setpoint using the sensor which is farthest from setpoint. The VFD shall ramp up and down to main- tain the differential pressure setpoint per sensor(s). Bypass Valve Operation Simulate a situation where the frequency of the operat- ing pump VFD drops to 15 HZ. Should the frequency of the operating pump drop to 15 HZ, the bypas valve shall open to maintain system pressure The functional tests have all passed for given trade ☐YES ☐NO