DAYLIFF ULTRASUN UFD320DL 설치 및 운영 매뉴얼 - 페이지 10

{카테고리_이름} DAYLIFF ULTRASUN UFD320DL에 대한 설치 및 운영 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. DAYLIFF ULTRASUN UFD320DL 17 페이지. Flatplate solar systems

All units are fitted with 3kW electric booster heaters which should be connected to the

mains supply via 20A fuse or MCB by a qualified electrician. Manual control is suggested

with the switch mounted in a convenient place.

6. SYSTEM COMMISSIONING

Direct Systems

On installation or after service it is important that the system is primed. This is carried

out by first opening the incoming feed followed by the bleed cock and then observing

when all air is expended from the bleed outlet. Proper priming is important or else the

unit will not operate at full efficiency

Indirect Systems

As well as priming the service water as indicated above, it is important to fill the

heating system with pure water. Ordinary lowly mineralised tap or drinking water is

suitable and care must be taken to completely fill the collector and tank jacket. This is

done using the priming plug on top of the tank and carefully filling the unit until all air

is expended. It is also important to open the top collector bleed plug to ensure air

pockets are eliminated in the collection capillaries. Once primed, it is vital to ensure

that the system is properly sealed as fluid loss will render the system ineffective. The

system must therefore be thoroughly checked for leaks when operating and they must

be sealed accordingly.

7. USAGE

It is important that the hot water availability is properly managed as solar energy

heating only occurs between the hours of 9:00am - 4:00pm. This effectively means

that hot water is available in the evening as any draw off will result in temperature

reduction from the replacement cold water. If hot water is required in the morning

there should either be no night time draw off or the booster heater should be used.

Users should plan hot water usage accordingly.

Direct Systems

Direct hot water system have no moving parts and are essentially maintenance free,

though periodically the collector glass cover should be cleaned as a dust layer will

reduce efficiency.

Indirect Systems

Indirect systems rely on the small volume of circulated heating water in the sealed

system and full efficiency is obtained only when it is fully charged with water. The units

must therefore be regularly checked, recommended on a monthly basis and any

leaked water replaced.