Installation Manual

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VARIOMATIC

USE AND INSTALLATION MANUAL

Chapter

4

page. 18

 

 

4.2. Packaging

The boiler is delivered on a single pallet with a wooden crate, protected by cardboard packaging.

The boiler must always be handled vertically, using manual or mechanical cranes, which can lift the pallet on which it is packaged or the boiler itself directly.

Take special care not to damage electrical or mechanical parts, with shocks or water sprays once the protective packaging has been removed.

 After removing the packaging, make sure the boiler is complete and undamaged

 If in doubt, contact the retailer

 The document envelope (inserted in the pellet tank) contains:

Heating system maintenance booklet

An instruction manual for installation, use and maintenance

Appendix G - Technical inspection report for heating system with an output of less than 35 kW

Guarantee

4.3. Boiler room

Make sure the room complies with the requirements and characteristics set out in the applicable regulations in force. It is also necessary for the room to provide at least as much air as is required for regular combustion. It is therefore necessary to make holes in the walls of the room, which comply with the following requirements:

 Have a free cross-section of at least 6 cm calculated using the following ratios:

2 for every 1 kW (859,64 kcal/h). The minimum crosssection of the opening must nevertheless never be less than 100 cm

2.

The cross-section can also be

S = K * Q ≥ 100 cm

2

Where “S” is expressed in cm

2

, “Q” in kW, “K” = 6 cm

2

/kW

 The opening must be situated at the bottom of an external wall, preferably opposite the one where the combustion gases are vented.

4.4. Connection to the flue pipe

For the connection of the flue outlet pipe, local and national regulations must be observed (see Standards

UNI 7129 and UNI 10683).

A flue pipe must comply with the following requirements:

 It must be made of waterproof material resistant to the temperature of the smoke and related condensation

 It must ensure sufficient mechanical resistance and weak heat conductivity

 It must be perfectly sealed, to avoid the cooling of the flue pipe itself.

 It must be arranged as vertically as possible

 Chimneys both old and new, built without observing the above specifications may be conveniently recovered by "intubating" the chimney itself. This means a metal flue shall be inserted inside the existing chimney and the space between the metal flue and the chimney shall be filed with suitable insulation.

Installation instructions Technical dept. - All rights reserved - Reproduction prohibited

red

VARIOMATIC

USE AND INSTALLATION MANUAL

Chapter

4

page. 19

 

 In order to prevent the wind from creating pressure areas around the chimney that prevail over the rising force of the combustion gases, the outlet aperture must be positioned at least 0.5 metres above any structure adjacent to the chimney itself (including the ridge of the roof) at least 8 metres away.

 The fluepipe must have a diameter of no less than the boiler union; for flue pipes with a square or rectangular cross-section, the internal cross-section must be increased by 10% compared to the boiler union.

 The useful cross-section of the flue pipe can be calculated using the following formula:

S = K x P/√H

S ensuing section in cm

2

K reduction coefficient:0.045 for wood

P boiler output in kcal/h

H height of the chimney in metres, measured from the flame axis to the outlet of the chimney into the atmosphere. When sizing the flue pipe, please take into account the actual height of the chimney in metres, measured from the flame axis t the top, decreased by:

 0.50 m for every change in direction of the union duct between the boiler and the flue pipe

 1.00 m for every metre of horizontal development of the union itself.

 We recommend the sole use of outlet ducts which are suitable for the

type of fuel used. The supplier will not be held in any contractual and non-contractual way liable for damage caused by installation and usage errors and in any case due to failure to observe the instructions provided by the manufacturer of the appliance.

 The products of combustion of the boiler cannot be discharged in

collective flue ducts.

 The correct installation of the flue duct is necessary to encourage the

normal flow of smoke from the combustion chamber to the outside in the event of an electrical power failure.

 Remember that a draught of 20-30 Pa must be ensured.

Below are the main characteristic traits of the flue duct according to the provisions of standards UNI 7129 and UNI 10683:

 The smoke outlet must be equipped with inspection valves;

 The minimum height of the pipe directly connected to the smoke outlet of the boiler must be between 2÷3 m;

 If the presence of a horizontal section is necessary, we recommend that the same is of a maximum length of 1.5 m and with a slope gradient of 3÷5% to encourage the smoke to flow away;

 Use of a wind-proof and rain-proof terminal to avoid changing the slight overpressure inside the flue pipe (we recommend you end the flue pipe with a horizontal section);

 The outlet ducting must be made with suitable materials which can withstand the products of combustion and any condensation of the same (the inspection valve can allow any condensation that has formed to be vented);

 The ducts must be built to ensure maximum seal against smoke (UNI 10683);

 We recommend you insulate the duct, especially on the outside part exposed to the weather.

Avoid installing completely horizontal sections.

Technical dept. - All rights reserved - Reproduction prohibited

 

Installation instructions