MANROSE Through Roof Fan Cowls and Fan Kits Instruction Manual

MANROSE Through Roof Fan Cowls and Fan Kits

Product Information

The Through Roof Fan Cowls and Fan Kits are ventilation systems designed for installation on roofs. They come with a junction box for electrical connections and are available in different models depending on the type of fan used.

Technical Specifications

Duct (mm)| Fan Type| Max. Fan Watts| Max. Fan Pressure (Pa)| Free Air Performance (l/s)| Free Air Performance (m3/hr)| Specific Fan Power (W/l/s)| Sound dB(A)| Switching
---|---|---|---|---|---|---|---|---
150| Centrifugal| 70| 320| 153| 550| 0.46| 62 Standard
150| EC Axial| 18| 91| 105| 380| 0.17| 38 Standard

Note: Specifications are subject to change without notice.

Regulations and Standards

The Through Roof Fan Cowls and Fan Kits comply with the New Zealand Building Code and Healthy Homes Standards. They meet theventilation standards required for residential tenancy regulationsand the Healthy Homes Standards, sub part 4 – Ventilation Standards.

Complying with the Acceptable Solution G4/AS1

To comply with the mandatory mechanical extract system requirements, the airflow rates of the complete installed ventilation system must meet the minimum standards. This includes accounting for resistance from ducting, grilles, backdraught shutters, and other accessories.

It is important to select the right fan that can overcome pressure drops in the ducting system. Rigid duct systems are recommended for efficiency, while good installation practice is vital for flexible duct systems.

Choosing the Right Fan to Comply

Fans should be selected based on the complete installed system performance for a designated room. The table below provides the minimum airflow rates required for different rooms:

Note: Ventilation for toilets is only required if they have no openable windows. Simx recommends 40 l/s for laundries with unvented non-condensing tumble dryers as covered in AS 1668: Part 2 2012.

Product Usage Instructions

1. Read the installation instructions thoroughly before starting the installation process.
2. Ensure all necessary documentation is left with the home owner upon completion of installation.
3. Before making any electrical connections, ensure that theassembly is securely fastened to the roof using the roof flashing fastening procedure.
4. If necessary, the junction box can be fastened to the rigid duct.
5. Refer to Fig 1 for the list of cowls and kits that come with an inline axial EC fan and require the junction box.
6. Refer to Fig 2 for the list of cowls and kits that come with an inline centrifugal fan and require the junction box.

Contact enquiry@manrose.co.nz or visit www.manrose.co.nz for more information.

Distributed by Simx Limited.

Please ensure these instructions are read thoroughly before commencing installation and that all documentation is left with the home owner on completion of installation

CAUTION

• Before use, please check that the supply voltage and that of the appliance are the same (see product rating label).
• All wiring and wiring connections must comply with national wiring rules and regulations.
• Any changes or modifications made or attempted to this product, without the prior written approval of the manufacturer, will void any and all stated warranties.
• This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they are capable of, and have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
• Children should be supervised to ensure that they do not play with the appliance.
• In case of damage to the supply cord, switch off the device and do not tamper with it. Damaged supply cords must only be repaired or replaced exclusively by the manufacturer or by an appointed representative. Failure to comply with the above may endanger the safety of people and cause possible damage to the whole system.
• Precautions must be taken to avoid the back-flow of gases into the room from the open flue of gas or other fuel-burning appliances.

ELECTRICAL CONNECTION
NOTE: Junction box supplied is suitable for internal use and below roof installation (inside the building)

• Cut the roof flashing on the 150/160 marking and fit to the rigid duct before commencing (see separate installation sheet detailing this).
• For below roof terminations the motor lead exit hole should be as far down the rigid duct as is practical – allow enough lead to protrude from the duct as is required for termination. After fitting the roof flashing, drillan 8mm hole at a suitable point in the rigid duct and fit the supplied rubber grommet. The motor lead can then be passed through the grommet to the outside of the rigid duct.
• The assembly can now be placed in position in the roof penetration (see instructions on page 3). Once the assembly has been fastened to the roof by the roof flashing fastening procedure, the electrical connectionscan be made. The junction box can be fastened to the rigid duct if necessary.Junction box is supplied for the following cowls and kits with an inline axial EC fan: FAN0531 / FAN0532 / FAN0533 / FAN0534 / FAN0739 / FAN1009 / FAN1060 / DCT0189 Junction box is supplied for the following cowls and kits with an inline centrifugal fan: FAN0529 / FAN0530 / FAN0535 / FAN0740 / FAN0967 / FAN1002
• You may find it more convenient to pull the whole assembly down as far as possible in the roof flashing to carry out the terminations (Fig 1). Once completed, the assembly can then be pushed back up through the Dektite. Ensure that a visual check is made above the roof afterwards to check that the roof flashing is sealing correctly around the rigid duct (Fig 2). Once the terminations are completed the rigid duct can then be fastened to a rafter or purlin with the supplied clamp for rigidity. Ducting connections can then be made.
• Precautions must be taken to avoid the back-flow of gases into the room from the open flue of gas or other fuel-burning appliances.

TECHNICAL

Through Roof Fan Cowls and Fan Kits

REGULATIONS AND STANDARDS
New Zealand Building Code and Healthy Homes
The following two category requirements have been established for mandatory extraction ventilation in New Zealand.
The New Zealand Building Code for New Building Consents
The building regulatory system sets out a framework to promote good quality decisions being made during the Building Consent process. The legislation and regulations work together, as the building regulatory system. The functional clauses of the NZ Building Code are grouped and described by a letter and number. Clause G of the NZ Building Code covers services, with G4 setting out the performance requirements for ventilation. The Building Code is enshrined in law. The New Zealand Building Code, G4, has been changed. This is supported by Acceptable Solution G4/AS1 Fourth Edition that specifies mechanical ventilation in accommodation units that contain cooktops, showers and baths.
Residential Tenancy Regulations to the Healthy Homes Standards
Residential Tenancy Regulations for rental properties only is changing to the Healthy Homes Standards, sub part 4 – Ventilation Standards.
Complying with the Acceptable Solution G4/AS1
To comply, the mandatory mechanical extract system must deliver minimum airflow rates for the complete installed ventilation system. This means that airflow rates must deliver the airflow after resistance of the ducting, internal and external grilles, as well as all other accessories, such as backdraught shutters, are included. Fan selection is important as some types are far better at overcoming ducting system pressure drops. Additionally, the quality of the ducting system installation can be all important. Rigid duct systems (see page 102) are best as they are the most efficient. Good installation practice is vital for flexible duct systems.

Choosing the Right Fan to Comply
Fans cannot be selected on the basis of free-air performance only. Fans must now be selected on the basis of the complete installed system performance for a designated room as per the table below.

1. Toilets only require ventilation if they have no openable windows
2. Simx recommends 40 l/s for laundries with unvented non-condensing tumble dryers as covered in AS 1668: Part 2 2012
   Recent unregulated extract fan practices in New Zealand has trended to basic, low pressure axial fan products, as installed system performance has not been defined for independent inspection testing and compliance signed off by local authorities.

WIRING CONNECTIONS

• For inline axial EC fan models (no capacitor):
• FAN0531 / FAN0532 / FAN0533 / FAN0534
• FAN0739 / FAN1009 / FAN1060 / DCT0189
• For inline centrifugal fan models:
• FAN0529 / FAN0530 / FAN0535 / FAN0740
• For inline centrifugal (3 speed) fan models: FAN0967
• For inline centrifugal (3 speed) fan models:
  FAN1002

TYPICAL INSTALLATION

INSTALLATION

• Cut the pliable roof flashing sleeve where indicated on the sleeve for the relevant tube size: 150/160mm
• Slide the roof flashing down over the tube. Water can be used as a lubricant.
• Position the top end of the tube into the cowl. The top edge should sit 20mm inside the cowl. Drill through the three pilot holes and screw the cowl to the tube.
• You can now proceed to the actual roof installation. Cut a neat hole in the roofing material with minimal clearance for the tube.Insert the tube through the hole. Apply a neutral cure silicon sealant on the underside of the flange. Turning the flexible flange back makes this simple.
• Press the roof flashing into the contours of the roof configuration.
• Fasten the roof flashing to the roof using the screws supplied (Hex/slot head – 10 pcs). Drill a 5mm clearance hole in the flange for each screw.The screws can be driven into the roof without the need for a pilot drill hole, or use a 2.5mm drill. Fit the fasteners progressively outward in opposing pairs to avoid gaps. Do not use unapproved fasteners (check roofing manufacturer recommendations). Screws supplied are: AS3566.1 1990 Class 3
• In certain applications it may be advantageous to install the flashing on the diamond or bias. This particular installation method is especially suitable when having to seal enlarged holes, for penetrations on steep pitched roofs.

FAN TIMER SELECTION

• Please use the FAN2444 fan timer model shown
• Do not use old model FAN2444 (with resistor) or either FAN0372 fan timers shown
• enquiry@manrose.co.nz
• www.manrose.co.nz
• Specifications are subject to change without notice

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