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3 - CHECKLIST OF START-UP CHECK POINTS
3.1 - Checklist of start-up check points
Before commissioning the unit, all functions below and the associated components must be checked, using the check list below.
The table below shows a general overview of the planning required to facilitate the installation of the AHU. The following pages give
a more detailed description of the individual components. The unit should be lighted according to EN12100 during maintenance
operation.
CAUTION: “Technical staff who is responsible from startup and maintenence, has to take occupational health and safety
trainings according to the relevant national laws and obligations.” Do not work on electrical components including control
panels, switches, VFD untill you are sure ALL POWER IS OFF and no resudual voltage can leak from capasitors or solid state
components. Lock open and tag electrical circuits during servicing. If work is interrupted, confirm that all circuits are deenegized
before resuming work.
Before starting up the AHU ensure that the components have the correct connection voltage and
connect them in accordance with the regulations. The doors and access covers must be closed and the AHU must be earthed.
Start-up check points
Function
Components
Check points
Start-up
General
All functions
Remove obstacles and loose debris from compartment
All functions
Check for possible condensate and if necessary dry the parts
indoor installation/
outdoor installation
Internal and external panels
Damage
Internal and external panels
Damage
Joints
Cracks
Doors/access covers
Must be closed and locked before start-up
Flexible connections
Correct installation
Earthing
Correct earthing in accordance with regulations
Roof covering (outdoor installation)
Check if roof is completely watertight
dampers
Correct operation
Blades fully closed and at zero position
Actuators
Correct operation
Check rotation direction
Actuator end position same as damper end position
Filters
Correct filter type
Are the filters correctly installed
Pressure differential gauge
Correct operation
Pressure differential switch
Correct operation/set-up
Heaters
Hot-water coil
Correct connections
Air vent the coil
Leakage
Frost protection thermostat connected
Electric heater
Check heater earth
Check hatch earth
Correct fuse size
Check wiring diagram
Check for possible condensate and if necessary dry the heater
Coolers
Chilled-water coil
Correct connections
Air vent the coil
Leakage
Droplet eliminator
Correct alignment
Drain trap
Correct connection
Heat recovery wheel
Rotor
Check rotation direction
Seal
Correct seal towards wheel
Drive
Check connection voltage
Correct connection
Check current in all phases
Drive belt
Check tension
Rotation monitor
Correct connection
Controller
Correct connection
Plate heat exchanger
Damper (if used)
Correct operation
Actuator (if used)
Correct operation
Fan
Transport protection brackets
Remove
Fan housing and fan compartment
Remove obstacles and loose debris from the fan and fan compartment
Fan compartment, fan, motor, frequency converter Check for possible condensate and if necessary dry the parts
Impeller
Check rotation direction
Motor
Check connection voltage
Correct connection
Check current in all phases
Drive belt
Check tension
Flexible connections
Correct installation
Operating switch
Check connection
Ensure switch is locked off during checks
Frequency converter
Connections
Correct connection/complies with EMC
Frequency converter
Check for possible condensate and if necessary dry the converter
Voltage
Check connection voltage
Settings
Check correct settings
Phases
Check voltage in all phases
Lighting
Lamp
Check connection voltage
Control panel
Components
Check for possible condensate and if necessary dry the components
Power supply
Check power supply voltage
Check neutral
Correct earthing in accordance with regulations
Power supply with correctly sized fuses
External sensors/control devices
Connect according to wiring diagram
Alarms
Connect to BMS or external panel
Controller
Parameters
Set all specific project parameters
