eta SH User Manual

20
www.eta.co.at
Parallel buffers with internal Tichelmann Buffer
Cold water
Hot water
Solar
flow
Solar
return
M
M
The basic principle of the internal Tichelmann is diagonal flow; two buffers are connected together at the top
and bottom (= parallel connection). For output up to 90 kW, a connection with DN32 (ETA buffer connection
set) is sufficient, for 30 kW at least R1” or 28 mm copper. On one tank, the boiler outlet is
connected at the top; on the other the boiler return is connected at the bottom.
DN32
DN32
ETA stratified buffer SP ETA stratified buffer SP
Upper buffer
sensor
Middle buffer
sensor
Lower buffer
sensor
Log wood boiler flow
Heating circuits flow
Hot water tank flow
Oil/gas boiler flow
Hot water tank return
High-temperature circuits
return
Log wood boiler return
Low-temperature circuits
return
Oil/gas boiler return
For a sufficiently large hot water reserve,
the enabling temperature should be over 45°C!!
Return lines with strongly differing temperatures should be fed into the buffer storage tank separately
To minimise pipe circulation losses it is helpful to make the connections with downward siphon loops.
DN32
DN32
ETA stratified buffer SP ETA stratified buffer SP
Upper buffer sensor
Middle buffer sensor
Lower buffer sensor
+ lower solar buffer
Log wood boiler flow
Heating circuits flow
Oil/gas boiler flow
High-temperature circuits
return
Log wood boiler return
Low-temperature circuits
return
Oil/gas boiler return
Return lines with strongly differing temperatures should be fed into the buffer storage tank separately
Two parallel buffers and conventional hot water supply
Two parallel buffers with fresh water module and solar stratified charging
Start reliefStart relief
Buffer top solar
Upper buffer sensor for hot water
Parallel buffers with internal Tichelmann

eta SH Specifications

General

Brand	eta
Model	SH
Category	Boiler
Language	English