Ballast installation system for photovoltaic panels GRAM-BOX is an innovative solution designed for use on flat surfaces and sloping roofs with a slope of up to 10 degreesTanks filled with liquid are much safer and more convenient during installation than standard systems using a metal frame and concrete blocksThe lack of sharp edges greatly reduces the risk of mechanical damage to the roof sheathing, and thanks to the low weight of the tank before filling, its transport to the final place of assembly does not cause problemsAfter setting the elements in the destination and attaching the panels to them, the tanks should be filled with mains waterIn order to increase the stability of the structure, additional stiffening strips can be used, mounted with M8 screws to dedicated drains located in the front and rear walls of the tank
The system can also be used in winter, at negative temperaturesAt the production stage, the tanks are pre-filled with an appropriate amount of non-freezing concentrateAfter dilution during topping up with water, the concentration of the agent in the container remains high enough to prevent the water from freezingThe tank is supplied to the user with glycol concentrate and weighs 10 kg, therefore, to determine the recommended weight of 60 kg, 50 l of mains water should be added to the tank, which translates into obtaining the recommended weight and concentration of glycolic solution of 10.7%
In the upper part of the tank there are mounting rails with M8 screw drainsThe slope of the plane marked by rails to the ground is 21°The mounting rails are fully compatible with fastening systems suitable for trapezoidal bridges
Remark! The set does not include stabilizing strips, screws or brackets for mounting photovoltaic panelsAppropriate accessories should be selected and purchased separately - according to the dimensions of the mounted panels