Drazice OKC 100 NTR 작동 및 설치 매뉴얼 - 페이지 14

{카테고리_이름} Drazice OKC 100 NTR에 대한 작동 및 설치 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Drazice OKC 100 NTR 18 페이지. Tank-type water heaters for vertical mounting
Drazice OKC 100 NTR에 대해서도 마찬가지입니다: 작동 및 설치 매뉴얼 (17 페이지), 작동 및 설치 매뉴얼 (12 페이지), 작동 및 설치 매뉴얼 (20 페이지), 작동 및 설치 매뉴얼 (20 페이지), 운영 및 설치 매뉴얼 (20 페이지), 작동 및 설치 매뉴얼 (18 페이지)

cold water supply piping. It is therefore advisable to drain all fittings and piping that carry

water, up to the part where the house water meter is installed (connection of the house to

water main) which is not jeopardised by frost. When the appliance is to be used again,

it has to be filled with water and one needs to make sure that the water flowing out at the

hot water valves did not contain any bubbles.

2.8 INSPECTION, MAINTENANCE & CARE FOR THE APPLIANCE

During the heating process the water that increases its volume during the heating must drip

off the safety valve outlet (in non-pressurised connection this water drips off the

combination faucet valve). In full heating (about 65 °C) the volumetric water gain is approx.

3% of the vessel capacity. The function of the safety valve has to be checked regularly (based

on the information contained in the attached safety valve manual). In common operation,

such a check needs to be implemented at least once a month, and after each appliance

shutdown that exceeds 5 days.

Caution! In doing so, the cold water supply pipe and the connection fitting of the appliance

may get heated! If the appliance does not work, or if hot water is not withdrawn,

no water shall drip off the safety valve. If water drips, then the pressure in the supply piping

is either too high, or the safety valve is defective. Please call a specialised plumber

immediately!

If water contains too many minerals, an expert has to come to remove the scale that forms

inside the vessel, as well as free sediments. This has to be performed after one or two years

of operation. Repetitive water heating causes limestone sediment on both the vessel walls

and chiefly the flange lid. The sedimentation depends on the hardness of water heated, its

temperature, and amount of hot water consumed.

We recommend checking and cleaning the appliance from scale and eventual replacement

of the anode rod after two years of operation. The anode life is theoretically calculated for

two years of operation; however, it changes with water hardness and chemical composition

in the place of use. Based on such an inspection, the next term of anode rod exchange may

be determined. Have the company in charge of service affairs clean and exchange the anode.

When discharging water from the appliance, the mixing valve battery for hot water must

be open in order to avoid creating underpressure that would prevent water discharge. The

cleaning is carried out through the hole in the flange by: draining the boiler, dismantling the

flange lid and cleaning the vessel. A new sealing has to be used for re-fitting. Since the inside

of the vessel has special enamel, the surface of which must not get in contact with a scale

removing agent – do not work with a lime pump. Remove the lime layer with a timber and

suck it off, or wipe it off with a clout. After that, the appliance must be rinsed thoroughly and

the heating process is checked the same as during the initial putting in operation. Do not use

any abrasive cleaning agents or dye thinners to clean the outer shell of the appliance (such as

cellulose thinner, trichlor, and the like). For cleaning use a wet clout and add a few drops of

liquid cleaning agent for household applications.

- 14 -