DE DIETRICH NEO 2.1 - Manual (Page 40)

To prevent damage to the collectors and their connections by frost
and corrosion, it is essential that a high quality heat transporting fluid
be used to fill the solar installation. If the recommended ready-mixed
fluid is used (Tyfocor L / LS) the system will be adequately protected
at temperatures down to approx. -24 °C.
To prevent any damage of the system, pressure tests should only
be carried out with the heat-transporting fluid used later on.
4
Testing pressure: 4 bar
4
Test time: minimum 1 hour
4 Pressure gauge
39 Filling pump
61 Thermometer
84 Stop valve with lockable nonreturn valve
85 Primary solar circuit pump
87 Sealed safety valve calibrated at 6 bar
88 Solar expansion vessel
89 Heat transfer fluid container
112b Domestic hot water sensor
114 Primary solar circuit filling and draining device
(a propylene glycol)
126 Solar regulator
130 Manual bleed degasser
131 Array of collectors
132 Solar station complete with DIEMASOL solar regulation
M001774-B
130
89 89
230V
50Hz
114
61
88
87
85
4
84
114
39
61 61
4. Installation NEO 2.1 / SUN 211
39 05/10/09 - 300020210-001-B