eta SH User Manual

21
2012-11
Buffer Parallel buffers with external Tichelmann
SH Montage
M
M
High-temperature circuits return
Stratified buffer with/without internal water heat exchanger
Start relief
ETA stratified buffer SP
ETA stratified buffer SP ETA stratified buffer SP
ETA stratified buffer SP ETA stratified buffer SP
Log wood boiler return
Low-temperature circuits
return
Upper buffer sensor
Middle buffer sensor
Lower buffer sensor
+ buffer bottom solar
Upper buffer sensor for hot water
Upper solar buffer sensor
Total output up to
Shut-off valves on buffer
Collector line at least
30 kW
DN 20
DN25
R 1“- 28x1,5
300 kW
DN 40
DN65
R 2½“- 76x2
160 kW
DN 32
DN50
R 2“- 54x1,5
90 kW
DN 32
DN40
R 1½“- 42x1,5
60 kW
DN 25
DN32
R 1¼“- 35x1,5
450 kW
DN 40
DN80
R 3“- 89x2
To minimise pipe circulation losses it is helpful to incorporate siphon loops downward in the connection lines.
Three or more parallel buffers with hot water tank or internal water heat exchanger
Three or more parallel buffers with fresh water module and solar stratified charging
Log wood boiler flow
Heating circuits flow
Hot water tank flow
Oil/gas boiler flow
Log wood boiler return
Heating circuits return
Hot water tank return
Oil/gas boiler return
Upper buffer sensor
Middle buffer sensor
Lower buffer sensor
Log wood boiler flow
Heating circuits flow
Oil/gas boiler flow
Cold water
Hot water
Solar flow
Solar return
Oil/gas boiler return
Cold water
Hot water
Lower boiler sensor solar
Solar flow
Solar return
For a small solar heating system, individual buffers can be
shut down in the summer to reduce the total volume.
The basic principle of the external Tichelmann is parallel flow through several buffer storage tanks, which is achieved
with diagonally alternating connection of the collectors. The last buffer on the flow collector is the first on the return
collector. To achieve uniform charging/discharging, the stub lines should be minimum one or two sizes smaller than
the collector. There is no output limit for this circuit.
Parallel buffers with external Tichelmann

eta SH Specifications

General

Brand	eta
Model	SH
Category	Boiler
Language	English