oventrop 2104203 Oilstop V Anti Siphon Valve Instruction Manual

oventrop 2104203 Oilstop V Anti Siphon Valve

General information

• The original operating instructions are written in German.
• The operating instructions in other languages have been translated from German.

Validity of the operating instructions

• These operating instructions are valid for the Oventrop Oilstop V anti-siphon valve (item no.: 2104203).

Extent of supply

• Oventrop Oilstop V anti-siphon valve
• Operating instructions

Contact

• OVENTROP GmbH & Co. KG
• Paul-Oventrop-Straße 1
• 59939 Olsberg
• GERMANY  www.oventrop.com.

Technical service

• Phone: +49 (0) 29 62 82-234

Symbols used

• Highlights important information and further additions.

Safety-related information

Correct use

• Operational safety is only guaranteed if the product is used as intended.
• The Oventrop Oilstop diaphragm anti-siphon valve is used in the suction pipe of oil firing systems according to DIN 4755 where the max. level in the tank is above the lowest point in the suction pipe.
• The valve prevents the heating oil from leaking out of the tank in the event of a leak in the downstream suction pipe.
• Installation is possible both in one pipe system (with and without return flow feed) and in the suction pipe of two pipe systems.
• In two-pipe systems, the return pipe must end with a free outlet in the tank.
• Any use beyond and/or different from this is considered improper use.
• Claims of any kind against the manufacturer and/or his authorized representatives for damage resulting from improper use cannot be recognized.
• Proper use also includes correct compliance with these instructions.

Warnings
Each warning contains the following elements:

Warning symbol SIGNAL WORD

• Type and source of danger!
• Possible consequences if the danger occurs or the warning is ignored.
• ! Ways to avoid the danger.
• Signal words define the severity of the danger posed by a situation.

NOTICE
Indicates a situation that can potentially result in damage to property if not avoided.

Safety notes

• We have developed this product in accordance with current safety requirements.
• Please observe the following notes concerning safe use.

Danger due to insufficient personnel qualification

• Work on this product may only be carried out by suitably qualified specialist tradespeople.
• Due to their professional training and experience as well as knowledge of the relevant legal regulations, qualified specialist tradespeople are able to carry out work on the described product in a professional manner.

Operator

• The operator must be instructed in the operation by specialist tradespeople.

Risk of environmental pollution due to leaking heating oil

• Heating oil is a substance hazardous to water. Catch leaking heating oil before it could get into the ground.

Availability of the operating instructions

• Every person working with this product must have read and applied these instructions and all other applicable instructions.
• The instructions must be available at the place of use of the product.
• Pass on these instructions and all applicable instructions to the operator.

Technical description

Design

1. Piston
2. Tappet
3. Opening
4. Diaphragm cover
5. Diaphragm
6. Body
7. Seal
8. Pressure spring
9. Scale
10. Hole for lead seal
11. Handwheel

Functional description

• The Oilstop V is a diaphragm-controlled safety device against siphoning.
• The product is used to prevent heating oil storage tanks from being siphoned off.
• The Oilstop V is variably adjustable to a protection height of 1 to 4 m and can be set to “entlüften” (bleed) and “abstergent” (shut off) for maintenance work.
• In the “entlüften” (bleed) setting, the piston is lifted from its seat and the protection function is overridden.
• This serves to facilitate bleeding of the suction pipe during initial commissioning or after maintenance work.
• In the “abstergent” (shut off) setting, the valve is closed and cannot be opened with negative pressure.
• This setting makes it possible to work on the suction pipe.
• The valve is pressure-balanced, i.e. when pressure builds up in the suction pipe, the valve allows oil to flow back to the tank.

Normal operation

• The heating oil feed pump creates a negative pressure in the suction pipe.
• The diaphragm of the anti-siphon device pushes the locking piston out of its seat against the pressure spring so that heating oil can flow to the extraction pump. As long as the necessary negative pressure is applied, the valve remains open.
• If the heating oil feed pump is switched off, the vacuum in the suction pipe drops. This causes the pressure spring to press the locking piston back into the starting position. As a result, the anti-siphon device is closed and the suction pipe is shut off.

In case of leakage

• If there is a leak in the suction pipe, sufficient negative pressure cannot build up and the valve remains closed.

Installation scheme

1. Tank
2. Oil stop V anti-siphon valve
3. Filter or filter with a deaerator
4. Burner
5. Protection height Δhv

Technical data

Dimensions

Accessories and spare parts

Ofix-Oil compression fittings G 3⁄8 connection sets, 2-fold|  |

Item no.

|
---|---|---|---
6 mm|  |  | 2127050
8 mm|  |  | 2127051
10 mm|  |  | 2127052
12 mm|  |  | 2127053

Sealing wire with seal

|  |

Item no.

|
10 pieces|  |  | 1089091

5.      Transport and storage

|  |  |

Parameter Value

• Temperature range: 0 °C up to +70 °C
• Relative air humidity: max. 95 %
• Particles: Store in a dry and dust-protected place
• Mechanical influences: Protected from mechanical shock
• Weather influences: Do not store outdoors Protect from sunlight
• Chemical influences: Do not store together with aggressive media

NOTICE

• The suction pipe and the filter can become clogged at low temperatures
• At low temperatures (frost), paraffins may precipitate from the heating oil.
• These can clog the suction pipe or the filter.
• ! Make sure that the temperature of the heating oil does not fall below 0 °C (according to DIN 4755).

NOTICE

• Malfunctions due to foreign bodies
• Foreign bodies can impair the function of the Oilstop V.
• ! Make sure that no foreign bodies (e.g. shavings) get into the valve.
• ! Protect the valve from coarse dirt (e.g. with a screen or a strainer).
• The installation position is arbitrary (horizontal, inclined, or vertical, in rising or falling sections).
• The protection height of the valve must cover the vertical height difference between the installation location of the valve (center) to the lowest point of the suction pipe (see position 5 in Illust. 2 on page 35).
• Too high a protection leads to a higher suction load on the burner pump. The Oilstop V enables optimal adaptation to the system conditions.

Non-return valves (without pressure relief) can hinder the operation of the diaphragm anti-siphon valve. In case of possible pressure build-up due to temperature increase, especially in case of a separate oil storage room, they should be removed or put out of function. Alternatively, a pressure compensation device can be installed in the pipe to absorb the volume (e.g. item no.: 2107003).

The valve has female threads G 3⁄8 and is suitable for Oventrop compression fittings.

Connection options

• Oventrop brass compression fittings for 6, 8, 10 or 12 mm pipe, item no.: 212705_ (see Accessories)
• The threads are designed according to DIN 3858.
• Screw-in fittings with short thread R 3⁄8 can also be sealed in.
• Size the suction pipe according to DIN 4755.

Sizing of the suction pipe according to DIN 4755

The DIN 4755 standard recommends a flow velocity of 0.2 to 0.5 m/s for suction pipes. Air may be dissolved in the heating oil. If there is negative pressure in the upper parts of the suction pipe, the air can outgas together with volatile oil components. These air bubbles must be transported evenly to the burner. They can accumulate in pipes that are too large. If a large surge of air then reaches the burner, it can switch to malfunction. For one pipe system, the volume flow of heating oil corresponds to the quantity of burned oil (approx. 1 liter/hour per 10 kW heating output). For two-pipe systems, the output of the burner pump is to be taken into account. The formula for the flow velocity w in m/s:

• w = 0,3537 * V/D2with
• V = Volume flow of heating oil in l/h
• D = Inner diameter of the suction pipe in mm

Pipe diameters smaller than 4 mm are not recommended. The suction pressure should not exceed 0.4 bar.  Mount the product in the suction pipe above the max. liquid level. Observe the flow direction (see Illust. 2 on page 35). The setting scale must be easily accessible.

Commissioning

Install the screw connections free from tension and use suitable open-end spanners. Observe the country-specific and local regulations.

Mounting in the dome shaft of an underground tank

You can also install the valve in the dome shaft of underground tanks or in an inspection chamber of the suction pipe. This may be necessary if parts of the suction pipe in the ground are below the max. fill level in the tank.

NOTICE

• Malfunction due to ice formation in the diaphragm chamber
• If the water in the diaphragm chamber turns to ice, the valve could open unintentionally. The protection function would be canceled.
• Mount the product with the diaphragm cover facing downwards or otherwise to ensure that no water can enter. The opening in the diaphragm cover must not be closed.

Commissioning

• Follow the instructions of the burner manufacturer.
• Set the scale to “entlüften” (bleed) by turning the handwheel.
• Fill the suction pipe via the burner pump or a separate suction pump.
• Check the connections for tightness. Eliminate leaks.
• If a pressure test of the suction pipe is carried out, a max. the test pressure of 6 bar must not be exceeded.
• After filling the suction pipe, set the scale to the required protection height (see position 5 in Illust. 2 on page 35).
• If necessary, secure the setting against unauthorized adjustment by sealing it (see Accessories).

Operation

• During operation, the valve does not require any action.
• The valve can be shut off for work on the suction pipe. To do so, set the scale to “abstergent” (shut off) by turning the handwheel. After having completed the work on the suction pipe, set the scale back to the required protection height.

Troubleshooting

Maintenance

Carry out the following recurring maintenance work at appropriate intervals (every 5 years at the latest).

1. Check all screw connections and the valve for moisture. If necessary, retighten screw connections or replace defective components.
2. Check the setting of the protection height.
3. Carry out a functional check.

Functional check

A leak is simulated at the lowest point of the suction pipe. To do this, detach the supply hose from the burner pump and hold the end of the hose at the level of the lowest point of the suction pipe (e.g. lower edge of the filter cup). Only a few drops should spill out. If more heating oil leaks out, see section 9 on page 42. Then reassemble the connection.

Disposal

When the product reaches the end of its service life or has an irreparable defect, it must be dismantled and disposed of in an environmentally friendly manner or the components must be recycled.

NOTICE

• Risk of environmental pollution!
• Incorrect disposal may lead to environmental damage.
• Dispose of packaging material in an environmentally friendly manner.
• If possible, recycle the components.
• Dispose of components that cannot be recycled according to the local regulations.

Oventrop GmbH & Co. KG

• Paul-Oventrop-Str. 1 · 59939 Olsberg
• Tel. +49 2962 820 · Fax +49 2962 82400 ·
• [email protected]. · www.oventrop.com.

References

• Oventrop

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