customer service – international dept. the thermal solar systems installation commissioning ...
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Customer Service – International Dept.
The thermal solar systemsThe thermal solar systems
Installation
Commissioning
Maintenance
Customer Service – International Dept.
Checks before the installationChecks before the installationCheck all the possible sunlight obstacles and shades in the different season
Customer Service – International Dept.
Rough calculationRough calculationIndicative data for a rough dimensional calculation :
Hot water daily consumption: 50/70 liters at 45°C per person
Solar collectors surface (Italy): North = 1 – 1,1 m2 per personMiddle = 0,7 – 0,8 m2 per personSouth = 0,65 – 0,7 m2 per person
Thermal storage = 70–80 litri/m2
Example : 5 people family North Italy:
50 liters x 5 people = 250 liters per day of water at 45°CCollectors surface: from 4 to 5 m2
Storage tank : 4,5 x 75 = 340 liters
Customer Service – International Dept.
Solar panels installationSolar panels installation
Fix carefully the collectors to the support frames and do not remove the polystyrene cover sheet during the installation
Connect the collector probe in the apposite housing
Customer Service – International Dept.
Central unitCentral unit
Follow carefully the indications and the warnings
Customer Service – International Dept.
System fillingSystem filling
After the calculation of the needed fluid quantity, fill the system using an automatic pump
System cleaning (dirt, etc)Air vent (silentness, better
thermal exchange)Check and test of the hydraulic
sealing
Customer Service – International Dept.
Thermovector liquidThermovector liquidIt is absolutely necessary to use the liquid
supplied by Immergas
Example :
Solar system with 2 vacuum tubes collectors + 30 meters of copper pipes Ø18x1
Rough calculation :
Vacuum tubes collector = 1,06 liters (flat = 0,96 liters)Single circulation group = 0,275 liters (0,5 lt double circ. group)Pipes Ø 18 = 0,21 liters per linear meter300 lt storage tank lower coil = 6,5 liters
System total volume = 15,42 liters
Customer Service – International Dept.
Thermovector liquidThermovector liquid
The liquid circulating inside the solar system must contain a specific glycol liquid mixture in order to :
protect against freezing at low temperatures avoid the corrosion in case of “stagnation”
flat collectors CP2 vacuum tubes collectors
20 liters
Standard supplied glycol tanks
20 liters
Customer Service – International Dept.
Necessary checks of the systemNecessary checks of the system
Check the safety devices of the sanitary circuit (d.h.w. expansion vessel, safety valve) and the position of the other devices like probes, solar pump, etc
Check the solidity of the collectors support frames on the roof (wind danger) and assess installation limits (orientation, dimensions, weight) or local rules
Check if suitable materials and components have been used (NO : zinc coated pipes, hemp, plastic, tin soldering, etc.)
Check the position of the single system devices in order to allow the easy access in case of maintenance or repair
Evaluate the matters concerning the location, the dimensions and the weight of the water full storage tank according to the place/room where it is installed
Connect the safety valve to the drain
Avoid automatic devices for the system filling
Customer Service – International Dept.
The thermal solar systemsThe thermal solar systems
Installation
Commissioning
Maintenance
Customer Service – International Dept.
System commissioningSystem commissioning
• System operating pressure and flow check/regulation
• One way valve check
• System air vent
• Hydraulic circuit sealing check
• D.H.W. expansion vessel and safety valve check
• Central unit regulation (operation parameters, temperatures, etc)
• Solar circuit pump position check (system return)
• Check/regulation of the thermostatic mixing valve
Customer Service – International Dept.
The thermal solar systemsThe thermal solar systems
Installation
Commissioning
Maintenance
Customer Service – International Dept.
Ordinary maintenanceOrdinary maintenance
MAIN CHECKS :
PH value (7,5) and glycol concentration
Storage tank anode wear and possible replacement
Central unit parameters and temperature probes operation
Thermostatic mixing valve set
Possible D.H.W. integration proper operation
Air vent and hydraulic circuit sealing
Expansion vessel pressure
Valves, insulations, one way valve