Commissioning Instructions; Possible Fixing Points On A Sloping Roof - Ferroli VF Serie Instrucciones De Montaje

VF

COMMISSIONING INSTRUCTIONS

Flushing and filling
For safety reasons, only carry out filling when the sun is not out or after covering the collectors.
Important
Only use the specified antifreeze liquid (see list)
Complete emptying of already filled collectors may not be possible. Therefore, if exposed to frost, the collectors must be filled with a
solution of water and antifreeze even for operation and pressure tests. Alternatively, the pressure test can be done with compressed
air and a leak detection spray.
Operating pressure
Max. operating pressure is 10 bar.
Bleeding
The system must be bled:
• at the time of commissioning (after filling)
• 4 weeks after commissioning
• when necessary, e.g. in case of faults
Warning: Risk of scalding caused by contact with steam or the heat transfer fluid!
Operate the bleed valve only if the temperature of the heat transfer fluid is < 60°C. When emptying the system, the collectors must
be cold! Cover the collectors and, if possible, empty the system in the morning.
Heat transfer fluid check
Periodically (every 2 years) check the antifreeze properties and the pH value of the heat transfer fluid.
• Check the antifreeze with a tester and change or replenish it if necessary!
• Check the pH value with a measuring instrument (pH nominal value approx. 7.5): if it falls below the limit value of pH 7, change
the heat transfer fluid.
Collector maintenance
Once a year, visually check the collectors for any damage, dirt or leaks.
It is also advisable to do a check whenever the collectors undergo higher than normal stresses (e.g. strong wind gusts, heavy loads
due to snow, etc.).

POSSIBLE FIXING POINTS ON A SLOPING ROOF

Notes:
Collectors installed on the roof with the assembly set keep the same angle of inclination as the roof.
If installation is carried out carefully, the roof structure remains waterproof.
• = RECOMMENDED FIXING POINTS IN
• = RECOMMENDED FIXING POINTS IN
NORMAL LOAD CONDITIONS NORMAL LOAD CONDITIONS
245 705 1200
Some variations in sizes may be necessary, depending on the type of roof.
When high stresses on the structure are foreseen (e.g. heavy snowfall,
wind gusts, etc.) it is advisable to increase the fixing points as given in the diagram.
X = RECOMMENDED FIXING POINTS IN
X = RECOMMENDED FIXING POINTS IN
1200 1200
Cod. 3540S892 - 01/2010 (Rev. 00)
Important:
HIGH LOAD CONDITIONS HIGH LOAD CONDITIONS
1200 1200 1200 1200 245
EN
245 245
705
25