An expansion vessel is necessary to absorb the expansion of the solar fluid when high temperatures are reached in the solar collector. Available sizes are 24 and 35 litres.
|SOL502EXP||24 litre expansion vessel|
|SOL503EXP||35 litre expansion vessel|
The European VDI 6002 directive recommends that an additional vessel is fitted when the contents of the piping between the collectors’ field and the expansion vessel is lower than the 'wet' side volume (between the expanded diaphragm and the vessel inlet). This minimum requirement is rarely fulfilled in the case of solar systems with short pipe runs. The intermediatory vessel effectively protects the membrane against excessive temperatures that could damage it.
SOL505EXP Intermediatory Vessel, 5 litre
SOL512EXP Intermediatory Vessel, 5 litre
|SOL505EXP||Intermediatory Vessel, 5 litre|
|SOL512EXP||Intermediatory Vessel, 5 litre|
ANTI-SCALD MIXING VALVE
Anti-scald (mixing) valve must be fitted close to the hot water outlet of the solar tank so that delivery to the taps does not exceed 65ºC
|SOL504MIX||Anti-scald Mixing Valve|
AIR VENT AND ISOLATION VALVE
An automatic air vent should be fitted at the highest point in the solar circuit system in order to remove air from the system during commissioning. The isolating valve should be fitted before the air vent and isolated once the system has been commissioned.
GLYCOL SOLAR ANTI-FREEZE
The heat transfer fluid used in a solar circuit is normally a mixture of water and a polypropylene glycol anti-freeze. The glycol anti-freeze also contains an additive to protect against corrosion and evaporates at higher temperatures than water to allow higher system temperatures.
Firebird recommends a 40% glycol to 60% water mix to ensure frost protection to circa -25ºC.
|SOL506FFL||Tyfocor L Anti-freeze - Flat plate|
|SOL507VFL||Tyfocor LS Anti-freeze - Vacuum tube|
1M STAINLESS STEEL FLEXIPIPE
Firebird can also supply two 1m stainless steel flexi pipes which are connected to the flow and return side of the collector array. The flexible pipe saves the installer having to make complicated pipe bends through the roof of the house. Fittings are included to connect the pipe to the solar collectors.
|SOL402FPP||1m Flexi pipe|
|SOL001ELB & SOL001FEM
||Fittings for Flat plate|
|SOL075ELB & SOL075TAP
||Fittings for Vacuum tube|