PRIMA PLUS

*M stands for measured distance to combustibles on a connecting flue pipe application in the range of diameters Ø150-Ø200
For other diameters in the range the following distances should be used: When the product is used on solid fuel applications Ø100 = 375mm Ø130 = 390mm
** Used internally inside a non combustible shaft
*** Insulated and used internally inside a suitable enclosure
 
The Prima Plus range is manufactured under the strict requirements of BS EN ISO 9001 Quality management scheme. Prima Plus has corrosion certification from Gastec, MPA and TÜV. Prima Plus is listed by HETAS as a product suitable for solid fuel.
 

Connection to an appliance which is not connected to the fuel supply, should be carried out by a competent person. We recommend the use of HETAS approved installers for solid fuel applications. If installation is carried out by a non HETAS registered installer, the installation must be certified by a local Building Control inspector. Connection to an appliance that is connected to the fuel supply must be carried out by a Gas Safe (Gas) or OFTEC (Oil) registered installer.

The design guide must be read in conjunction with the detailed component installation instructions. For full design and installation details the key referral documents are:

• BS EN 1856-2: Connecting Flue Pipes and Chimney Liners
• BS EN 1859: Metal Chimneys - Testing Methods
• BS EN 1443: Chimneys - General Requirements
• BS EN 15287-1: Chimneys. Design, installation and commissioning of chimneys. Chimneys for non-room sealed heating appliances.
• Approved Document J: - Combustion appliances and fuel storage systems (England & Wales)
• DFP Technical Booklet L: - Combustion appliances and fuel storage systems (NI)
• Technical Handbook (Domestic & Non Domestic), Section 3 - Environment (Scotland)
• Appliance Installation Instructions and related standards. Other standards covering specific applications will also be relevant and must be adhered to.

Planning permission for a System Chimney may be required, and reference should be made to the local Building Control Department.
Ensure all chimney components are available and check them to ensure there has been no damage. Do not use damaged components.
 

APPLICATIONS
Prima Plus is designed for use on solid fuel, gas and oil burning appliances with continuous operating temperatures of up to 600°C. With the addition of a lip seal gasket to the joint, Prima Plus may be adapted for use on condensing gas and oil appliances with positive pressure of up to 200Pa and continuous operating temperatures of up to 200°C. For condensing applications it is important that any horizontal runs must have a fall of 5°, where headroom makes 5° impossible the minimum acceptable for warranty purposes is 3°. The design must include drainage component must be installed within the system to facilitate the safe removal of condensates.
 
VENTILATION
It is very important that sufficient air for combustion is provided to the room containing the appliance, to enable correct and efficient working of the system. Reference should be made to the appliance manufacturer’s instructions and recommendations are also given in the Building Regulations Document J.
 
CARBON MONOXIDE ALARMS
The carbon monoxide alarms should comply with BS EN 50291:2001.
Where a new or replacement fixed solid fuel appliance is installed in a dwelling, a carbon monoxide alarm must be provided in the room where the appliance is located.
Please follow manufacturer’s instructions with regard to siting and fixing or alternatively:-

1. On the ceiling at least 300mm from any wall or if it is located on a wall, as high up as possible (above any doors and windows), but not within 150mm of the ceiling and
2. between 1m and 3m horizontally from the appliance.

N.B Provision of a carbon monoxide alarm should not be regarded as a substitute for correct installation and regular servicing.
 
HANDLING
It is advised that suitable PPE should be used when handling the products.
Delivery to Site and Storage
Components should be carefully transported and off loaded. They should be inspected to ensure they have not been damaged, and should be stored off the ground and under cover so that they are protected from accidental damage and the adverse effects of weather.
Particular care and attention should be taken to avoid surface damage to product with the high temperature painted finish.

APPLIANCE/CHIMNEY CONNECTION

On solid fuel, wood burning or biomass applications requiring a T600 rating, when a single wall connecting flue pipe is used to connect an appliance to a Twin Wall Insulated System Chimney, the lower end of the insulated chimney section must extend a minimum of 425mm below the ceiling. When connecting the appliance to the connecting flue pipe, the joint between the the connecting flue pipe and the appliance outlet must be securely caulked and sealed with non asbestos rope (or suitable alternative) and fire cement.

On gas and oil appliances, where a T200 rating is required what should the distance be below the ceiling?

On gas and oil appliances, where a P rating is required for the flue pipe, then the relevant approved silicone or viton seal should be used to ensure a gas tight joint.

CONNECTING FLUE PIPE DIAMETER

Connecting Flue Pipe Diameter size should be as recommended by the appliance manufacturer. Where there is a requirement for a flue diameter smaller than the appliance spigot, then the operational requirements of the appliance and the configuration of the flue must satisfy the flue sizing requirements of EN13384-1.

DISTANCE TO COMBUSTIBLES

In accordance with building regulations, it is essential that the correct distance to combustible material is maintained. On  solid fuel applications, where there is a risk of soot fire, refer to CE Approvals on page 2 for full details. as per the measured distance M shown on page 2 for Ø150 – Ø200 or 3 x Ø.

CONNECTING FLUE PIPE ROUTE

Single wall connecting flue pipes should only be used to connect appliances to a Chimney. They should not pass through any roof space, partition, internal wall or floor, except to pass directly into a chimney through a wall of the chimney.

Connecting flue pipes should be located as to avoid igniting combustible material.

On solid fuel appliances the maximum length of a connecting flue pipe is 2m. This distance is reduced to 1.5m if any of the acceptable alternative methods of connection are adopted as per BS EN15287-1. 

When a single wall connecting flue pipe is used to connect an appliance to a Twin Wall Insulated System Chimney, the lower end of the insulated chimney section must extend a minimum of 425mm below the ceiling.

On appliances with a top outlet, it is recommended that a vertical run of at least 600mm should be allowed immediately above the appliance prior to any change of direction.

On appliances with a rear outlet, it is recommended that there is maximum of 150mm in the horizontal run however under certain conditions, as described in alternative methods in BS EN 15287-1, this may be increased to 450mm. (See p.5-6 for full details.)

Within a system (Chimney + Connecting Flue Pipe) there should be no more than 4 changes of direction of maximum 45˚. 90˚ Factory made bends or tees within the system may be treated as being equal to two 45˚ bends (as per Document J of the Building Regulations issued October 2010).

INSPECTION

Provision should be made for inspecting and cleaning the chimney system. This is important on solid fuel applications.

An inspection pipe, inspection elbow or a 90° or 135° Tee with tee cap can form a suitable inspection point (unless cleaning/inspection can be done through the appliance). To aid cleaning, sufficient distance should be left between changes of direction to permit the safe passage

of cleaning brushes within the system. It is recommended that chimneys serving solid fuel appliances be swept as frequently as necessary, but at least twice a year.

Where a horizontal connecting flue of more than 150mm is required to connect a solid fuel fired appliance to a chimney, an installation method as per the examples below may be used provided the following criteria is met:
 

1. The maximum length of horizontal connecting flue pipe does not exceed 450mm;
2. A Defra exempt appliance or an appliance, which is limited to burning authorised smokeless fuel only, is installed;
3. A calculation according to BS EN13384-1 has indicated safe operation of the proposed configuration, and the results of the calculation are left with the householder along with the appliance installation instructions;
4. The appliance manufacturer agrees in writing to the proposed configuration;
5. The chimney manufacturer agrees in writing to the proposed configuration;
6. The total length of single wall connecting flue pipe is not more than 1.5m;
7. The appropriate distances to combustible materials from both the appliance and the connecting flue pipe are maintained. 

Note: It is mandatory that when using Prima Plus as chimney liner, the liner MUST NOT be supported at the top of the stack. See components below

 
 

TESTING AND COMMISSIONING PRIOR TO FIRST USE

This is carried out using a flue flow test as described in BS EN 15287 Parts 1 & 2, with reference to the appropriate appliance type.

APPLIANCE OPERATION

If the appliance is slumbered overnight or for longer periods then it is advisable to run the appliance at controlled high fire condition for a period of at least 30 minutes. Prolonged slumbering of the appliance is a contributing factor to a system chimney failure. It is important to maintain sufficiently high flue gas temperatures in order to avoid condensate and acid corrosion problems, and to ensure complete combustion of the fuel.

MULTI-FUEL APPLICATIONS

Multi-Fuel refers to an appliance which may be used to burn either seasoned wood, or approved solid fuels. These fuels should not be mixed, as this increases the risk of deposits being built up in the liner.

MAINTENANCE

Each chimney must be designed to allow for easy inspection; sweeping should be carried out by competent persons. On solid fuel applications a list of HETAS registered sweeps can be found at www.hetas.co.uk. Chimney flue cleaning and inspection require the use of appropriate tooling – under no circumstances should chemical cleaners or mild steel tools be used to sweep stainless steel chimneys. Mechanical sweeping methods such as Rodtech, Rodstation and Gardus, which have been tested and approved by Schiedel Chimney Systems may be used. Cleaning/inspection of any chimney system should be carried out at least once a year, along with maintenance of the appliance, but it is recommended that chimneys serving solid fuel appliances be swept at least twice a year, at the end of the heating season to remove any deposits, which may have built up during the season, and prior to the start of the next heating season to ensure that the the flue way is clear of any blockages such as birds nests etc.

We would advise that monthly checks are carried out to ensure that there is no build up of any deposits in the flue way of the connecting flue pipe or system chimney.

FUEL STORAGE AND USAGE

Where solid fuels are being used, correct storage is critical and fuels must be kept dry. Wood must be seasoned prior to use, with a maximum moisture content of 20%. Only approved fuels should be used. Refer to HETAS list for details on www.hetas.co.uk.The fuel used must be suitable for the appliance - please refer to manufacturer’s instructions.

Under normal operating conditions and providing the system is installed correctly, it should last the lifetime of the appliance, which normally is 10 years. This product carries a 10 year conditional guarantee. The conditions are that the system is:
 

• Correctly sized and installed in accordance with the manufacturer’s instructions, current Building Regulations and relevant British and European standards.
• Maintained correctly by a qualified and competent person and maintenance records kept updated for both appliance and system chimney.
• Used in combination with an appliance burning only approved fuels in accordance with Schiedel Chimney Systems and the appliance manufacturer’s instructions.
• The product registration form must have been filled in by an appropriately qualified installer (see p.3 for details), and returned to Schiedel Chimney Systems Ltd.

For recommended fuels listings, please refer to the HETAS Guide www.hetas.co.uk In the event of a fault developing in the product due to defective materials or faulty manufacture Schiedel Chimney Systems undertake to replace the product only. Schiedel Chimney Systems cannot accept liability nor take any responsibility for the installation, building or redecorating costs or any other consequential losses arising. If any complaint is found to be a result of faulty installation, non-compliance with or abuse contrary to these conditions, the cost of site investigation is chargeable.

The Notice plate should be marked up in indelible ink and securely fixed in an unobtrusive but obvious position within the building such as:
 

• Next to the electricity consumer unit.
• Next to the chimney installation described.
• Next to the water supply stop-cock. See example alongside: