Variable Volume Start Up and Responsibilities

Responsibilities

Accurex shall integrate this pre-engineered system into new construction kitchen hoods. The I/O Processor, Keypad, and Electronic Motor Starters (VFDs) shall be mounted in a utility cabinet, the Temperature Sensors shall be mounted in the exhaust collar, and the Optic Sensors shall be mounted inside the ends of the hood with air purge units (APU) mounted on top of the hood. Accurex will execute the following:

• Accurex to pre-mount Variable Volume System at the factory
• Accurex to pre-wire system components with Plug-N-Play Cables provided
• Factory to pre-program the system based on the application (temperature span, minimum fan speed, number of sensors)
• Electrical contractor to field wire the I/O Processor inside the utility cabinet with an input of 115/1 or 230/1 VAC from a dedicated circuit (the output wiring to be connected to the hood lights)
• Electrical contractor to field-wire the electronic motor starters inside the utility cabinet by connecting 3-phase input power from the circuit breakers
  • The output wiring to be connected to the respective fan motor
  • The input and output wiring shall be run in separate conduit for each starter
  • Note: If there is a heated MUA unit, a separate circuit must feed the controls (do not use the motor circuit     and a control cable with at least 4 conductors shall be run from the make-up air unit to the I/O Processor).
• Electrical contractor to connect Plug-N-Play Cables from I/O Processor to each hood
• Electrical contractor to start-up the system by pressing the light and fan switch on the keypad to verify hood lights turn on and the fans go to minimum speed (correct fan rotation if necessary)
• Test and balance contractor to air balance the system by pressing the 100% switch on keypad
  • Speed adjustments on direct-drive fans to be made at the electronic motor starters (VFD’s)

Variable Volume System start-up process

• After order is placed, Accurex will process it and send it to our Variable Volume representative, letting them know the jobsite contact
• The Variable Volume representative will contact you within 48 hours and send you a hood start-up confirmation checklist for you to complete and send back
• Upon receiving the completed checklist, the representative will schedule a time to do their start-up field visit