Checklist For Proper Installation - eta SH Installation Manual

Checklist for proper installation

Boiler installation
Minimum wall clearances maintained (space for maintenance)
Return temperature riser with mixing valve dimensioned for minimum return temperature 60°C
Piping in vicinity of return temperature measurement point insulated over a length of at least 20 cm
Dry boiler room
Frost-proof installation or filled with antifreeze or at least electric heater in buffer
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
Sufficient ventilation in Germany (MFeuVO):
up to 35 kW with door/window to the outside and room volume of 4 m³/kW, no special measures for combustion
air supply (this rule is not applicable for sealed windows and doors), 35 to 50 kW at least 150 cm² free ventilation
cross-section, over 50 kW at least 150 cm² free ventilation cross-section + 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)
Safety
Safety valve without shut-off on boiler outlet
Safety valve on hot water side in hot water supply
Safety valve on buffer storage tank if it is also solar-charged
All safety valves without shut-off have visible drain via siphon funnel to sewer; if no sewer is available then piping
to floor (to prevent scalding)
Safety heat exchanger with thermally actuated drain valve connected to cold water inlet and with visible drain to
sewer. If no sewer is available under the thermal emergency cooling valve, then run pressure-resistant piping to
drain to the available sewer connection.
Pressure gauge
Fire extinguisher outside boiler room, easily visible and easily accessible (either in hall or stairwell)
Air venting, pressure equalisation and system separation
Air valve directly adjacent to boiler outlet and at highest point in flow pipe
Air valves in flow of each heating circuit at highest point
Air valve on buffer storage tank
Expansion tank with gross capacity 10% of system volume, installed directly in return between boiler and buffer,
actuating levers or hand wheels removed from all shut-off valves between expansion tank, boiler and buffer
No open expansion tank
Impermeable piping for underfloor heating with up to 3,000 running metres of piping, over 3,000 running metres
of piping with system separation (even for impermeable piping)
Softened water
Softened water for initial fill-up: maximum 20,000 lt°dH (system volume in litres multiplied by hardness in degrees
of German hardness). Softening after heating up the boiler is too late because the lime has already been deposited
on the boiler walls.
To keep water replacement (and the resulting new lime content) during repairs to a minimum, install enough
shut-off valves (especially on the buffer connections), and filling and drainage valves for each area that can be shut
off individually.
50 www.eta.co.at