Operational Recommendations; Frost Protection; Commissioning Of The System; Connections And Piping - Fondital Sulpack Natural Plus 150 Manual De Instalación, Uso Y Mantenimiento

5. Operational recommendations

5.1 Frost protection

In frost-endangered areas the system must be protected from frost. The system is closed loop system, so the right quantity if
glycol is ensuring the frost protection.

WARNING
The hot and cold lines are not protected against freezing. When installing the system, the pipes must be well insulated.
Model
Closed loop capacity (l) including collectors
Mixture [%] Min temperature [°C]
21 (25 model 300) -7
35 -17
40 -22
45 -27
* Quantity supplied as standard

5.2 Commissioning of the system

This is a natural circulation system with 2 circuits. The solar circuit is completely separate from the process water circuit.
In order to protect the materials from excessive thermal load, the filling and commissioning of the system should be carried out
as soon as possible after installation, but after 4 weeks at the latest. If this is not possible, the gaskets should be replaced before
commissioning to prevent leaks.
For safety reasons filling process should only be carried out during periods when there is no direct sunlight and with the solar
panels covered over (cover the panels with a non-transparent material e.g. carton-board). This prevents heating of the solar
system during installation.
The use of an antifreeze-water mixture in the solar circuit is necessary, particularly in areas where frost is prevalent.
CAUTION
Guarantee claims are only valid if the system has been used in conjunction with the supplier's original frost protection
agents and if the system has been properly installed, commissioned, and maintained.
For commissioning, you must make sure that the supply lines for the cold and hot water supply and the solar circuit must be
connected in accordance with the hydraulic diagram.
As first step you should always fill the storage tank with water!
The following sequence must be observed when filling the solar circuit:
-
Mix the glycol with water before filling. Filling must be realized very slowly.
-
The solar circuit must be completely full
-
If the solar circuit cannot accommodate the stipulated volume, check the system for possible faults.

5.3 Connections and piping

The system can reach temperatures higher than 95 °C which can lead to serious injuries. As result it is recommended to use
thermostatic mixing valve in order to limit the maximum temperature of the hot water to 50 °C.
Only use pipes and fittings which can resist in such high temperature.
The pipes should be well insulated using UV protected components only.
The domestic water must be protected against high pressure. If the pressure from the main exceeds 4 bars, then is recommended
to use pressure reducer device.
The storage tank is equipped with ¾'' female threads. For the sealing, use the right components which can resist the temperature
conditions. The safety valve provided must always be connected and ensure that works properly.
The collectors to the tank must be always connected with the components which are provided.

5.4 Periods without consumption

If the system is not used over a period of approx. two weeks, it is recommended to cover the collectors with non-transparent
material.
To avoid the growth of legionella bacteria it is recommend it to heat up the tank above 60 °C, once every week.
150
9,2
Glycol (l) Water (l)
2,0 * 7,2
3,2 6,0
3,7 5,5
4,1 5,1
200
14,2
Glycol (l) Water (l)
3,0 * 11,2
5,0 9,2
5,7 8,5
6,4 7,8
300
19,8
Glycol (l) Water (l)
5,0 * 14,8
7,0 12,8
7,9 11,9
8,9 10,9
45