DUCTWORK | Pre-Commissioning Checklist

This ventilation ductwork checklist can be used and completed throughout the project and its different stages covering:

• delivery,
• storage,
• installation &
• pre-commissioning/pre-functional

Once the pre-functional checks have been completed, including all equipment and ancillaries related to the ventilation system, the full functional testing/commissioning can be conducted.

This checklist should be used and completed throughout the project, and its different stages, delivery, storage, installation & pre-commissioning, before the functional testing occurs.

Delivery Inspection

Once the ductwork has arrived on-site, usually delivered by a transport company, and before being unloaded and accepted into storage, the following should be checked with the driver.

Any damage that is noted should be reported to the manufacturer/supplier immediately in writing supported with photographs.

Ref	Inspection/Task
1	Supplier's consolidated delivery ticket is available, showing all equipment and ancillaries for inspection and being used to check against.
2	A copy of the order that was sent to the supplier is available for reference and is being used to check against
3	The ductwork, flexible ducting, grilles/louvers and dampers are packaged, protected, for maximum protection
4	The labels on the ductwork sections and technical details/sizes match the purchase order and drawing.
5	Delivery protection is dry
6	Ductwork is dry
7	The flanges and frames of the ductwork are undamaged
10	Ductwork, if ordered, is pre-insulated.
11	Bracketry, if ordered, is included in the delivery.

Storage Inspection

Storage Area

If the ductwork is to be placed into storage on site prior to installation there will be an inspection completed checking the following.

Ref	Inspection/Task
1	The area is internal and will not be affected by the weather.
2	The surface where the equipment is to be placed is level.
3	The equipment will be raised from the floor to allow airflow and stop the risk of water ingress.
4	The area is well covered and protected.
5	The area is well ventilated and has no risk of high humidity.
6	The area is clean & dust-free.
7	The area is secure and protected from the movement of other materials and vehicles.

Storage of Ductwork

Prior to the ductwork being placed into storage, the following should be checked.

Ref	Inspection/Task
1	Ductwork and ancillaries will not have materials stacked on them.
2	All ancillaries will be placed in a safe and secure location, so items do not go missing or get damaged.
3	All original packaging is intact and not removed.
4	Ductwork and ancillaries are covered to protect from dust and dirt

Pre-Installation Inspection

Prior to the ducting being installed the following should be checked.

Ref	Inspection/Task
1	The ductwork is clean and free of damage.
2	All holes are cut and available through walls.
3	All holes are cut and available through floors for risers.
4	The room/area is dry and watertight.
5	The room/area the ducting will be installed into is clean and dust-free. If there is dust/construction work, then the ducting should be protected, ends capped.

Maintenance/Access

Ref	Inspection/Task
1	There is enough space allowed around and above any areas of the system/ductwork that will require future maintenance. [check the manufacturer’s maintenance instructions for requirements]
2	All-access doors can be fully opened to gain access to the damper and components.

Pre-Commissioning Inspection

Once the ducting has been installed and prior to the functional testing and commissioning phase taking place the following will be checked.

General

Ref	Inspection/Task
1	The ductwork is clean and free of damage prior to installation.
2	Ductwork is installed in accordance with SMACNA HVAC Duct Construction Standards.
3	All hat sections and standoff brackets are at the same height as the duct lining.
4	Access doors are installed in all casing, plenums, ductwork adjacent to fire dampers, automatic dampers, smoke dampers, and reheat coils, and as indicated on drawings.
5	The access doors are easily openable and not obstructed.
6	All galvanized sheet metal is separated from aluminum and copper with lead or felt gaskets, where required.
7	Ductwork is structurally sound to prevent drumming and sagging.
8	All transverse and longitudinal joints are sealed.
9	All branch and tee connections are at 45 degrees.
10	All medium pressure branch and tee connections are expanded 30 degrees on at least three sides.
11	Ductwork meets static pressure requirements specified for the system and leakage class for those pressures as defined by SMACNA HVAC Duct Construction Standards.
12	All ductwork except as noted in the specification is leak tested.
13	Elbows have an inside radius equal to a minimum of 3/4 of the width of the duct.
14	All square elbows and radius elbows larger than 18 inches [460mm] have turning vanes.
15	All wall and floor penetrations are sealed, and the fire stopped where required.
16	Volume dampers, grilles, terminal units, etc are provided and installed as per the ventilation drawings.
17	All duct openings are temporarily sealed to maintain duct system cleanliness.
18	Ductwork is insulated and vapor sealed
19	Ductwork is clearly labeled in line with project requirements

Flexible Ductwork

Ref	Inspection/Task
1	Flexible ductwork is clean and free from damage.
2	Flexible ducting is insulated where required
3	Flexible ductwork is free of sags and kinks.
4	Flexible ductwork is installed using extra heavy flexible duct straps.
5	The maximum length of flexible ductwork is 5 feet [1700m]
6	Flexible ductwork does not penetrate walls.
7	Flexible ductwork does not have 90-degree bends.
8	Flexible ducting is fixed with the correct methods to the ducting and grille boxes etc.

Attenuator and Silencers

Ref	Inspection/Task
1	Attenuators, where installed, are clean and free from damage.

Grilles and Terminal Diffusers

Ref	Inspection/Task
1	Grilles and diffusers, where installed, are clean and free from damage.
2	Grilles and diffusers, where required, have dampers for volume control.
3	Plenum boxes, where installed, are clean and free from damage.
4	Plenum boxes, where required, are insulated.

Documentation

Ref	Inspection/Task
1	All drawings have been updated to reflect any changes made.

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Ventilation Ductwork Pre-Commissioning Checklist [PDF]

To help us expand the site and create more resources, we have created the below documentation in [Microsoft Word] for download.

Click the ‘Buy Here‘ button to purchase the fully editable copy of the document below, which can be used straight away.

You will direct to our shop page.

Ductwork Pre-Functional Checklist [Microsoft Word]

049h-Ductwork-Checklist

Ductwork Pre-Functional Checklist [Microsoft Excel]

049h-Ventilation-Ductwork-Pre-Functional-Checklist

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