SECTION 23 09 00 – BUILDING AUTOMATION SYSTEM AND CONTROL FOR HVAC
This is supplemental language for a spec. This is not an all inclusive spec. This is language that is
meant to be copied and pasted into an existing spec.
PART 1 - GENERAL
PART 2 - PRODUCTS
PART 3 - EXECUTION
3.1
LEED COMMISSIONING SUPPORT AND REPORTS
A.
The BAS contractor shall provide support to the Commissioning Agent during the third party
commissioning phase of the startup.
B.
Demonstrate operation of the systems through the graphical interfaces that will be used by the
operators.
C.
Trend logs and plots: Provide trend logs and plots to document operation of the systems. The
commissioning agent shall be able to determine from the plot if the systems are working within
specification or not. Time intervals shall be 15 minutes unless otherwise stated.
1.
The commissioning agent may have their own set of trend and plots that they want to see.
Provide those materials upon request.
2.
At minimum, provide the following, as they are called for in the sequences of operations:
a.
Zones – 30 days
1)
Space temperature
2)
If VAV with heating in the box, show cooling command and heating
command
3)
CO2 level for high occupancy zones that require CO2 monitoring
b.
Single zone units or Packaged units – 30 days
1)
Space temperature for 30 days
2)
Heating and cooling commands
3)
Scheduled start/stop of unit that meets occupancy
4)
CO2 level for high occupancy zones that require CO2 monitoring
c.
Multizone AHUs – 30 days
1)
Scheduled start/stop of unit that meets occupancy
2)
Discharge air temperature – Show reset of discharge setpoint.
3)
Heating and cooling commands
4)
Humidity sensors
5)
Economizer tracking of discharge setpoint
6)
3.
4.
D.
Ventilation CFM amount – Show ventilation setpoint if it changes with
schedule, modes or occupancy feedback.
d.
Pumps – 30 days
1)
Scheduled start/stop and mode switchover
2)
System pressure control – Show reset of pressure setpoint
3)
Pump speed
4)
Demonstrate pump failure switchover (trend not required)
e.
Chilled water systems
1)
Scheduled start/stop and mode switchover
2)
Discharge water temperature – Show reset of discharge setpoint
3)
Cooling demand
4)
Chiller operating level feedback
5)
Show transitions of adding chillers and shutting off chillers
f.
Hot water heating systems
1)
Scheduled start/stop and mode switchover
2)
Discharge water temperature – Show reset of discharge setpoint
3)
Heating demand
4)
Boiler operating level feedback
5)
Show transitions of adding boiler and shutting off chillers
g.
Misc
1)
List of all points currently in alarm
2)
List of all points currently in override status
3)
List of all disabled points
4)
List all weekly schedules and events
5)
List of holiday programming
6)
List of control limits and deadbands
7)
System diagnostic reports including, list of Building panels online and
communicating, status of all Building terminal unit device points
8)
List of alarm strategy definitions
h.
Control Loops – Demonstrate that when loads change significantly, the control
loop for large equipment stay in tune. Follow these steps:
1)
Set up a trend log. Use the system to change the load or setpoints. Plot the
control loop response.
2)
Provide demonstrations for the following types of control loops:
a)
AHU chilled water coils
b)
AHU hot water coils
c)
AHU Economizer damper control
d)
AHU duct pressure control
e)
Pressure control in variable water systems (chilled water distribution
and hot water distribution)
f)
Condenser water or cooling tower water temperature
g)
Condenser pump speed control when chiller stage on and off
h)
Hot water mixing valves
If the weather is not in condition where every mode can be tested, then set up the trend
log and plots that will show the operation of the system so that it can be verified at a later
date.
Store the data for a minimum of 6 months.
IEQ – Provide a report to meet the LEED EB IEQc1.2: IEQ Best Management Practices –
Outdoor Air Delivery Monitoring. Store data for a minimum of 6 months.
1.
Case 1 – Mechanical Ventilation Systems
a.
2.
E.
Provide an inventory of ventilation airflow sensors for a minimum of 80% of the
ventilation air that it introduced to the building. The inventory shall match the
format required for reporting LEED-EB on-line data input form. Data shall
include Equipment designations, how airflow is determined, Minimum airflow
setpoint (for each mode or a range if variable), Alarm setting.
b.
Provide trend documentation of ventilation airflow for a 24 hour period
Case 2 – Densely populated Spaces
a.
Provide an inventory of Space CO2 sensors for high density occupied spaces. The
inventory shall match the format required for reporting LEED-EB on-line data
input form. Data shall include Ambient CO2, Sensor locations, CO2 setpoint or
CO2 delta setpoint, Alarm setting.
b.
Provide trend documentation of space CO2 for a 24 hour period
IEQ – Provide a report to meet the LEED EB IEQc2.3: Thermal Comfort Monitoring –
Temperature and Relative Humidity. Store data for a minimum of 6 months.
1.
Provide trend logs and plots showing that temperature and humidity is within comfort
levels for at least 20% of the building space.