eta PE-K 35, Руководство по установке, Страница: 54 / 60

54 www.eta.co.at
Subject to change due to technical improvements
Checklist
Checklist
Boiler installation
Minimum wall clearances maintained (space for maintenance)
Safety valve without shut-off on boiler outlet
Expansion tank with gross capacity 10% of system volume installed directly in boiler return, for buffer systems in return between boiler
and buffer
Air valve directly at boiler outlet and at highest point in system
Without buffer, sufficiently large heat exchanger in the tank (0.8 m² for 10 kW, 1.5 m² up to 25 kW, 2.5 m² up to 50 kW, 4 m² up to 90 kW)
Return temperature raising facility with pump or mixing valve dimensioned for minimum return temperature 60°C
Safety heat exchanger with thermally actuated drain valve on water inlet and visible drain to sewer
Filling and drain valve for each area that can be shut off individually
Pressure gauge
Boiler set up on sound insulation mat if output greater than 30 kW and positioned near living quarters
Emergency stop switch always required in Austria, can be required by authorities in Germany above 50 kW
Buffer storage tank if present
For parallel connected buffers with 5/4" connections (values for 6/4" in parentheses): one-sided connection possible for two buffers up
to 25 (40) kW, Tichelmann connection for two buffers up to 80 (130) kW, over 80 (130) kW external piping symmetrical or Tichelmann,
external Tichelmann connection for more than two buffers in any case
Softened water for initial fill-up: 20,000 lt°dH for system volume (in litres) multiplied by the hardness (in degrees of German hardness)
may not be exceeded.
Air valve on top of buffer storage tank
Safety valve for buffers with solar charging
Shut-off valves on all buffer connections (minimises drain volume - minimum lime content)
Buffer sensors set so that the required supply volume is ensured for hot water or peak loads.
Return temperature from system low enough to achieve the required storage capacity. Check radiator systems in particular to ensure that
sufficiently adjustable radiator valves are installed. Throttle air heat exchangers to the amount of water actually needed
Chimney
Chimney cross-section not too large
Multi-layered, insulated, moisture-resistant chimney or chimney renovation with inserted pipe
Condensate drainage with siphon from chimney to sewer
Connection pipe from boiler to chimney, short with few bends, thermally insulated, ascending
Flue pipe inserted into chimney sleeve with padded seal (structure-borne noise)
Accessible cleaning apertures in chimney and flue pipe bends
For boiler output 70 kW or more, a deflagration damper (blowback flap) is required in the connection pipe between the boiler and the
chimney or in the chimney within the boiler room
Draught limiter for chimneys higher than 12 m above boiler room floor, set to 5 to 10 Pa
Air inlet and outlet
Sufficient air inlets/outlets in Austria (ÖN H 5170): Air supply 2 cm² per kW of fuel thermal input, at least 200 cm² free cross-section, for
up to 100 kW rated heat output, outlet at least 180 cm² free cross-section and for every additional kW another 1 cm², for wire screens
at least 20% extra, for air flow through ducts longer than 1 m larger cross-sections and documented calculations by an expert
Sufficient ventilation in Germany (MFeuVO): up to 35 kW, door/window to the outside and room volume of 4 m³/kW, 35 to 50 kW at
least 150 cm² free ventilation cross-section, over 50 kW at least 150 cm² free ventilation cross-s 2 cm² per kW over 50 kW, for
wire screens at least 20% extra, for air flow through ducts considerably larger cross-sections (50 to 150% larger -> calculate)
Pellet store if present
There may be no electric lamps, switches, sockets, junction boxes, etc. in the pellet store (danger of dust explosion); if unavoidable,
then only using explosion-proof designs
Piping that cannot be removed must be covered by deflector sheets slanted away from the incoming pellets
Filling nozzles easily accessible for pellet supplier and firmly installed in the masonry
Filling and back air nozzles are earthed
Filling nozzle is installed 20 cm beneath the ceiling (centre of pipe) and directed horizontally into the room (not towards the ceiling)
Impact deflection sheet across from the filling nozzle
Tilted floor has a smooth surface
Doors and other openings into storeroom sealed all around. Keyhole sealed on the inside
Wooden boards installed on inner side of door
Entire storeroom dust-tight
Padded screw installation in wall opening (structure-borne noise)
Floor and walls of storeroom are dry