Dungs MB DLE 055 D01 설치, 사용 및 유지 관리 지침 - 페이지 12

{카테고리_이름} Dungs MB DLE 055 D01에 대한 설치, 사용 및 유지 관리 지침을 온라인으로 검색하거나 PDF를 다운로드하세요. Dungs MB DLE 055 D01 17 페이지. 1st stage gas trains

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1. Valve Adjustments

INSTALLING THE GAS TRAIN

The gas train leaves the factory ready for installation to the burner's left.

Connection between the gas supply line and train must be made using the gas-in flange (7) supplied,

and fastening screws (8). It is best to tighten screws in a crisscross pattern.

Do not, under any circumstances, install the valve with the coil (10) facing down.

Once installation is complete, you must check for leaks and make sure the gas train is working properly.

PRESSURE LOSS

The gas train pressure loss ∆p is provided from

the diagram; the scales of the volumetric out-

put

are valid respectively for:

a = air,

n = natural gas (G20),

p = propane (G30),

c = city gas (G140), only for applications not

covered by the Gas Appliances Directive

(90/396/EEC).

The value, provided from the diagram, can be

different according to the pressure stabilizer

adjustment.

The minimum necessary pressure in the network

can be obtained by adding the pressure of the

diagram to the burner pressure losses (see the

burner technical instruction) and the back pres-

sure of the combustion chamber (see the tech-

nical instruction of the heat generator).

PRESSURE STABILIZER ADJUSTMENT (5)

Set the pressure regulator by turning the screw

with a suitable screwdriver: turning clockwise in-

creases pressure delivery, whilst turning anti-

clockwise decreases pressure.

Once you reach the desired nominal pressure

value, close the cap and seal the ends of the wire

with lead, leaving the loop passing through the

holes short.

VALVE ADJUSTMENTS

The output of slow ignition (opening phase of the valve) is adjusted by turning the screw (3) anti-

clockwise in order to increase the output and clockwise to decrease it.

You can adjust the starting gas quantity up to 80% than the main output.

The main output is reached progressively, starting from the ignition output. You can have it by turning

the screw (4) anticlockwise in order to have an increase and clockwise to decrease the output.

LOW GAS PRESSURE SWITCH ADJUSTMENT

Adjust the gas pressure switch (6) by adjusting the graduated scale's wheel, after carrying out all the

other adjustments of the burner with the gas pressure switch adjusted at the beginning of the scale.

Let the burner work at the required output.

Close slowly the gate valve until the pressure, measured on the gas pressure switch gauge, comes down

of 5 - 6 mbar with regard to the working value.

Rotate slowly the gas pressure switch handle until the operation of the same gas pressure switch and

the resultant burner shut-down.

Open completely the gate valve.

3092

Fig. 2

D4061