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Greece Solar Systems: Solar Water Heater Manufacturers & Exporters, Megasun Solar Heating Systems
7. FILLING INSTRUCTIONS OF THE CLOSED CIRCUIT WITH THERMAL FLUID
For the antifreeze protection of the solar water heater, please follow the ratio of antifreeze protection stated in the table here below. Mix well the thermal fluid "SOLATHERM" with water. Start filling the closed circuit with the mixture, from the pipes (14) and (02). The filling must be done alternatively, from both pipes (14) and (02). During the filling, we advice you to shake the system, so that to ensure that no air is trapped inside the storage tank and the collector. Continue this procedure until the close circuit is completely full.
After the filling of the closed circuit, it is necessary to loose the plug (17A) at the top right hand of the collector, until it starts dripping thermal fluid (for models 200, 260 and 300 with two collectors, loose also the top pipe union (12) in order to release the air from the collector(s).
Tighten again the plug (17A) and the collector connector (12) and check for their complete water tightness.
Add some more SOLATHERM fluid in the closed circuit, until it overflows from the tubes (14) and (02). Screw the plug (14A) onto the tube (14) and fix the safety valve (02A) onto the tube (02).
Check carefully all the connections for complete water tightness. Place the protective side cover (20).
ANTIFREEZE PROTECTION RATIO TABLE FOR THE SOLAR WATER HEATER

MODEL		M E G A S U N
MODEL		120x2.10m²	160x2.60m²	200x2.60m²	200x4.20m²	260x4.20m²	300x4.20m²	300x5m²
Closed Circuit Total Capacity		9 lt	11 lt	13 lt	18 lt	21 lt	22 lt	23 lt
Temperature	Ratio
-5 ° C	Water Fluid	8 lt 1 lt	10 lt 1 lt	11.5 lt 1.5 lt	16 lt 2 lt	19 lt 2 lt	19.5 lt 2.5 lt	20.5 lt 2.5 lt
-11 ° C	Water Fluid	7 lt 2 lt	9 lt 2 lt	10.5 lt 2.5 lt	14.5 lt 3.5 lt	16.5 lt 4.5 lt	17.5 lt 4.5 lt	18.5 lt 4.5 lt
-18 ° C	Water Fluid	6 lt 3 lt	7.5 lt 3.5 lt	9 lt 4 lt	12.5 lt 5.5 lt	14.5 lt 6.5 lt	15.5 lt 6.5 lt	16 lt 7 lt
-20 ° C	Water Fluid	6 lt 3 lt	7.5 lt 3.5 lt	9 lt 4 lt	12 lt 6 lt	14 lt 7 lt	14.5 lt 7.5 lt	15.5 lt 7.5 lt
-27 ° C	Water Fluid	5.5 lt 3.5 lt	6.5 lt 4.5 lt	7.5 lt 5.5 lt	10.5 lt 7.5 lt	12.5 lt 8.5 lt	13 lt 9 lt	13.5 lt 9.5 lt
-36 ° C	Water Fluid	4.5 lt 4.5 lt	5.5 lt 5.5 lt	6.5 lt 6.5 lt	9 lt 9 lt	10.5 lt 10.5 lt	11 lt 11 lt	11.5 lt 11.5 lt

Greece Solar Systems: Solar Water Heater Manufacturers & Exporters, Megasun Solar Heating Systems