Mounting Instructions

CR Preparation

Each duct is individually packaged flat in a recyclable plastic bag. CR Ducts will quickly expand to their round form when the seal on the plastic duct bag is broken. When cutting into the duct bag, be careful not to damage any portion of the duct. As the plastic bag is unsealed, the interior will be open to dust and other pollutants.

CR Fitting boxes contain varying amounts of each type of fitting, dependent on size. Be sure to protect CR Fittings from external pollutants, such as water and dust, as much as possible.

When cutting CR Ducts to fit specific installation requirements, use of an insulation knife or large utility knife provides the straightest cut possible. To begin, slice a hole in the CR Duct clear through both the outer and inner foil with the knife, thereafter cut carefully around the circumference of the duct.

Cutting should be done slowly to avoid tearing the inner foil. Avoiding angled cuts will ensure simpler mounting with the highest possible tightness levels in your system. When cutting less than 10 cm, hold the inside of the open end of the duct, as there is risk in tearing the inner or outer protective foils.

After the duct is cut to the proper measurements, a CR Sleeve must be placed on both open ends.

The CR Sleeve serves four main purposes:

• • Protecting the internal foil of the CR Ducts from being damaged when introducing new connections.
  • Preventing pre-insulation from entering internally transported air within the ventilation system.
  • Preventing moisture from entering into the insulation layer of the duct.
  • Creating the highest possible tightness of the system.

Each duct is individually packaged flat in a recyclable plastic bag. CR Ducts will quickly expand to their round form when the seal on the plastic duct bag is broken. When cutting into the duct bag, be careful not to damage any portion of the duct. As the plastic bag is unsealed, the interior will be open to dust and other pollutants.

CR Fitting boxes contain varying amounts of each type of fitting, dependent on size. Be sure to protect CR Fittings from external pollutants, such as water and dust, as much as possible.

DO NOT lift fittings by the neck. This will degrade the quality of the fitting and prevent tight joints within your installation. 

Applying the CR Sleeve

Step 1
Make sure that the 6 notches on the sleeve are oriented correctly to the hexagonal form of the duct.

 

 

 

Step 2
Place the sleeve into the open end of the duct, with the 6 inner sections filling the hexagon and outer section covering the end of the duct.

 

 

 

Step 3
Secure the position of the sleeve on the duct by wrapping tape around the joint. Make sure that the duct is clean from dust and dirt. If necessary, clean the duct with a micro fibre cloth.

 

Soap Application

Spray applicator with sponge

1. Soap (green soap) mixed with water 1/5
2. Spray plenty of soap mixture onto sponge
3. Apply to sleeve and/or fitting

 

 

 

 

 

 

 

 

 

 

CR Fittings and Ducts 

Slide the duct over the CR Fitting until it completely covers the neck. The edge of the duct should come into contact with the larger, central portion of the fitting. NOTE: Always use soap on the fitting neck, making this step easier. Do not use soap on the ducts as this can make taping difficult. And don’t carry the duct by the neck!

 

 

 

 

 

 

CR Duct to CR Duct 
The same mounting procedures are followed when joining two CR Ducts.

 

 

 

 

CR to round sheet metal

 

 

 

 

 

 

CR Ducts with standard round sheet metal applications
When a CR Duct is combined with sheet metal applications, a CR Adapter must be used. The CR Adapter is mounted in the same way as fittings and nipples. It is important that the CR Adapter is pushed all the way into the sleeve.The internal dímensions of the Adapter correspond to round metal nipples.

CR Fittings with standard round duct applications
Standard dimension round nipples fits into the CR Fitting, which allows for connections between normal round sheet metal ducts and the CR Duct System.

To secure, place CR Tape around the circumference of the joint, covering the ends of both duct and fitting.

Make sure to use nipples and adapters with rubber sealing. This creates a tight seal and reduces leakage. Using nipples or adapters without rubber sealing can harm the inner foil of CR Fittings, so we advise not to use these.

Round to Rectangular

Transforming the CR Duct
A key feature of the CR Duct is the ability to be transformed from round to rectangular at chosen locations throughout your installation. This can be done very simply with the CR Transformer.

 

 

 

 

 

 

Step 1
Place the transformer onto the duct at the selected location of rectangular mounting, ensuring that the pre-folded corners are those creating the four corners of the rectangular duct. Bend two corners to create an initial frame.

 

 

 

 

 

 

Step 2
Bend the last section around, shaping the duct into a rectangle, and secure the latch into the hole

Proper Hanging

Putting the CR Duct up
Hanging of the Climate Recovery Duct System should be done in the easiest way possible, abiding by EN 12236 and local authority standards. The CR Duct System does not transport vibrations, so CR Ducts and CR Fittings are able to touch other installations and building parts without creating more noise in your project. It is important to note that this applies as long as the parts in contact with CR products are not:

• possessing any sort of sticky substance along the exterior;
• reaching a temperature above 60° C.

The CR Duct can be folded at various angles to create easier mounting scenarios and applications, while maintaining its patented memory to spring back to the standard round shape.

Avoid repeated folding of the ducts as over time rigidity can be diminished, sacrificing the beneficial qualities and aesthetic appeal of CR Ducts.

Mount alone, but follow the rules
The low weight of the CR Duct System allows for simple hanging, but it is important to get acceptance of the inspector for the chosen method. If you are a single person mounting the CR Duct System, it is important that at least one fixed point exists along a straight installation. This will prevent difficulties in joining ducts and fittings together.

Attachment to the structure
Suspension of the CR Duct system must be done in accordance with standard EN 12236. When mounting the CR duct system to the building structure, M8 threaded rod is used. CR hangers follow the Swedish Housing Authority’s recommendations for R15 installations.

Hanging support
CR suspension is available in two variants. CR Cradle and CR Hanger. The CR Cradle is attached to the suspended ceiling with two M8 threaded rods, after which the channel is laid in the cradle.

 

 

 

 

 

 

CR Hanger consists of two cradles which are assembled together using the supplied screw and nut.

 

 

 

 

 

 

Hanger spacing
Hanging support of the CR Duct System should be maintained at a minimum of every 2.3 meters of duct length and within 10 cm of any joint.

If CR products are installed vertically, the support must be placed a minimum of 50 cm from joint connections, with further support spaced at a minimum of every 2.5 meters.

When combining the CR Duct System with sheet metal ductwork, support should be placed within 10 cm of joints and every 2 meters.

Any Questions? Don’t hesitate to get in touch with us!