HVAC Control Sequences of Operation

Transcription

1 HVA ontrol Sequences of Operation.1 cooling occupied setpoint.2 cooling unoccupied setpoint.3 outside air temperature 4. Air Handler Heating.1 Occupied Mode - he heating valve shall modulate to maintain the highest associated space temperature at an adjustable heating setpoint (initially 71F), subject to a discharge low limit of 55F. he heating valve shall not operate unless there is no demand for cooling, and the air handler dampers are shut to minimum position..2 Unoccupied Mode - A call for heating shall be initiated when the average space temperature drops below the the heating setback setpoint (initially 60F). Upon a call for heating, the heating valve shall open fully. Full heating shall continue until the average space temperature has risen 2F above the heating setback setpoint, at which time the heating valve shall shut completely..1 heating occupied setpoint.2 heating unoccupied setpoint.3 discharge low limit.4 outside air temperature 7. Air Handler Mixing Dampers, basic control.1 Occupied Mode.1 Dampers shall modulate to maintain an adjustable mixed air temperature setpoint, initially 55F, subject to an adjustable minimum position percentage, initially 10%..2 When outside air temperature exceeds an adjustable outside air dry bulb override setpoint, initially 68F, the dampers shall close to minimum position..2 Unoccupied Mode.1 While the fan is off, dampers shall remain fully shut..2 While the fan is on and cooling is required, dampers shall modulate to provide the maximum benefit from available free cooling, subject to a discharge low limit temperature of 55F. If the outside air temperature is above the outside air dry bulb override setpoint, the dampers shall remain fully shut..3 While the fan is on and heating is required, the dampers shall remain fully shut..1 outside air temperature.2 damper position setpoint.3 damper minimum position setpoint.4 mixed air temperature setpoint.5 outside air dry bulb override setpoint 8. Air Handler Mixing Dampers, O 2 control.1 Occupied Mode.1 Dampers shall modulate to maintain an adjustable mixed air temperature setpoint, initially 55F, subject to an adjustable maximum space or return air O 2 setpoint, initially 600ppm..2 When outside air temperature exceeds an adjustable outside air dry bulb override setpoint, initially 68F, the dampers shall modulate to maintain the O 2 setpoint..2 Unoccupied Mode.1 While the fan is off, dampers shall remain fully shut..2 While the fan is on and cooling is required, dampers shall modulate to provide the maximum benefit from available free cooling, subject to a discharge low limit temperature of 55F. If the outside air temperature is above the outside air dry bulb override setpoint, the dampers shall remain fully shut..3 While the fan is on and heating is required, the dampers shall remain fully shut..1 outside air temperature.2 damper position setpoint.3 space or return air O 2 setpoint.4 mixed air temperature setpoint.5 outside air dry bulb override setpoint 5/11/

2 HVA ontrol Sequences of Operation 9. Heating Pumps.1 he pumps shall operate when outside temperature is below an operator adjustable high-limit, initially 55F. On a rise in outside air temperature, the pumps shall shut off at 5F above the setpoint..2 he pumps shall operate for one minute when they have been off for 24 hours..1 pumping high limit.2 outside air temperature 10. ooling Pumps.1 he pumps shall operate when outside temperature is above an operator adjustable low-limit (initially 60F). he pumps shall operate for one minute when they have been off for 24 hours..2 Additional Graphic Elements.1 pumping low limit.2 outside air temperature 11. Hot Water Boiler Staging 180F 175F Primary Loop Water emperature 170F 165F 160F 155F 150F -10F 0F 10F 20F 30F 40F 50F 60F Outside Air emperature.1 he boilers shall be staged to maintain a primary loop hot water supply temperature according to a reset control schedule as shown, with a throttling range of 6F. Boiler circulators shall be sequenced with the burners such that a circulator starts two minutes prior to the corresponding burner firing and stops two minutes after the burner stops firing. he control system shall ensure a minimum of 15 minutes between stages. Boiler lead shall rotate between the two boilers, with the lead boiler changing weekly. Stage Lead low fire Lead high fire Lag low fire Lag high fire /11/

3 omken win Arena AHU #2 2nd Floor Meeting Hall Air Supply FS O2 H FZ FS o 2nd Floor Meeting Hall Radiator Supply o Room 213 NOE: FS - Firestat FZ - Freezestat I N O R P O R A E D Project: 0378 Drawing: 378 Schematics.vsd Drawn By: S Revision Date: May 14, 2001 Refer to "DD Notes" page for Point List note references

4 omken win Arena AHU #4 West Side Air Supply Snack Bar Exhaust Hood FZ FS H West Side Supply DD ontrol Point List for AHU #4 ontrol Point Sub-ype Notes ooling valve control 0-10vdc or 4-20mA 1 Damper actuator 0-10vdc or 4-20mA 1 Exhaust Hood Start/Stop Stop/Start 2 Heating valve control 0-10vdc or 4-20mA 1 Snack Bar Exhaust Hood Status 3 2 Supply air temperature sensor emperature 1 Supply Fan and Snack Bar Exhaust Hood Start/Stop Stop/Start 1 Supply fan and snack bar exhaust hood status. Status 3 1 Space temperature sensor with override. emperature 9 2 Point otals: I N O R P O R A E D Project: 0378 Drawing: 378 Schematics.vsd Drawn By: S Revision Date: May 14, 2001 Refer to "DD Notes" page for Point List note references

5 Hot Brine System (snow pit melting and subfloor heat) omken win Arena Arena Refrigeration Plant BR Rink 2 BS RP2 Rink 1 RP1 BS EV1 EV2 HHB RP4 HZ o Zamboni and DHW Heat Recovery Hot Brine System (snow pit melting and subfloor heat) ooling ower P RS RL RD nc P H Sump R1 R2 R3 R4 ompressor Jacket ooling RP5 RP3 I N O R P O R A E D Project: 0378 Drawing: 378 Schematics.vsd Drawn By: S Revision Date: May 14, 2001 Refer to "DD Notes" page for Point List note references

6 Printed: 5/11/01 9:42 AM Filename: 378 ontrol Strategy ref.xls Page: 1 of 2 Project Name: omken win Arena Job Number: 378 Purpose: able , ontrol Strategy ross Reference reated: Strategies Mechanical System omken win Arena 1 Occupied/Unoccupied Air Handler Scheduling 2 Fan Operation 3 Air Handler ooling 4 Air Handler Heating 7 Air Handler Mixing Dampers, basic control 13 Exhaust Fan Scheduling 8 Air Handler Mixing Dampers, O2 control 9 Heating Pumps 10 ooling Pumps 11 Hot Water Boiler Staging 14 Exhaust Fan Pushbutton ontrol 17 hiller Start/Stop and hilled Water emperature 21 ooling ower 22 Air Handler Occupant Override 25 Domestic Hot Water Heating 30 Lighting Zone Scheduling 35 Arena Refrigeration ompressors 38 Arena 2-Speed Brine Pumping 40 Arena Dehumidifier 36 Arena Refrigeration Suction Pressure 37 Arena Ice Slab emperature 41 Arena Hot Gas Heat Recovery Notes AHU #1 AHU #2 AHU #3 AHU #4 snack bar exhaust fan to be scheduled separately from AHU4 HV #1 HV #2 HV #3 DEHUMIFIER #1 DEHUMIFIER #2 PAKAGED DEHUMIFIER #3 PAKAGED DEHUMIFIER #4 No automation for packaged dehumidifiers. No automation for packaged dehumidifiers. EHAUS FAN #10 EHAUS FAN #11 HO WAER HEAING PLAN MESI HO WAER HEAING Separate control for DHW loop and Zamboni loop Excel Spreadsheet Efficiency Engineering Inc.