top of page

Issues we routinely find during our checks and tests.

Selected checks and tests.

Examples of Issues Routinely Discovered by CCx.

Prefunctional Checks:


Physical condition of equipment.

Incorrect mounting, vibration control not installed, inadequate service clearance, damaged equipment/filters.

Installation of adjacent piping and ductwork.

Insufficient insulation, incorrect valves/dampers installed, missing valves/dampers/testing ports, inadequate clearance for TAB.

Visual check of control devices.

Wiring not complete, mounted in a way that will impede function (incorrect location or orientation).

Functional Verifications:


BAS Graphic Accuracy

Missing graphics, missing points, thermostats mis-mapped.

Sensor Accuracy

Missing sensors, inaccurate/malfunctioning sensors.

Valve and Damper Function

Valves/dampers that won’t open/close completely, valves/dampers wired backwards.

Integrated Functional Testing:


Alarms and Safeties

Alarms not generated as required in sequences, alarms not pushed through to main screen and/or not logged.

Enable/Disable (based on): OAT, Schedule, Sensor Input, and/or Occupancy

Manual overrides affecting system performance, equipment fails to follow schedule/mode as programmed. Trending not set up to record data as required.

Temperature and Humidity Control

False loading (hot or cold) resulting in overly cooled or heated spaces, dehumidification modes not activating, units not modulating as required in sequences.

Fan Speed Control

Unit not following sequences as required (sensor or programming issue), supply and exhaust fans not coordinated as required.

Building and Zone Pressure Control

Building/zone/room severely over/under pressurized due to sensor or programming issues.

Energy Recovery

Energy recovery device running at incorrect time/conditions.

Space CO2 control

Units not responding to increased CO2 levels due to sensor or programming issues.


Comments


©2025 by Cooper Commissioning.

bottom of page