Table of Contents
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solenoid valve for air VAA
Contents
1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Checking the usage . . . . . . . . . . . . . . . . . . . . . 2
3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5 Setting the bypass . . . . . . . . . . . . . . . . . . . . . . 4
6 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . 5
7 Replacing the actuator . . . . . . . . . . . . . . . . . . . 6
8 Replacing the damping unit . . . . . . . . . . . . . . . 8
9 Replacing the circuit board. . . . . . . . . . . . . . . . 8
10 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . 9
11 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . 9
12 Technical data . . . . . . . . . . . . . . . . . . . . . . . 10
13 Designed lifetime . . . . . . . . . . . . . . . . . . . . . 11
14 Logistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
15 Certification . . . . . . . . . . . . . . . . . . . . . . . . . 12
16 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
oPeRAtInG InstRUCtIons
· Edition 05.22 · EN · 03251614
1 sAFetY
1.1 Please read and keep in a safe place
Please read through these instructions care-
fully before installing or operating. Following the installa-
tion, pass the instructions on to the operator. This unit
must be installed and commissioned in accordance
with the regulations and standards in force. These
instructions can also be found at www.docuthek.com.
1.2 explanation of symbols
1 , 2 , 3 , a , b , c = Action
➔ = Instruction
1.3 Liability
We will not be held liable for damage resulting from
non-observance of the instructions and non-com-
pliant use.
1.4 safety instructions
Information that is relevant for safety is indicated in the
instructions as follows:
DAnGeR
Indicates potentially fatal situations.
WARnInG
Indicates possible danger to life and limb.
CAUtIon
Indicates possible material damage.
All interventions may only be carried out by qualified
gas technicians. Electrical interventions may only be
carried out by qualified electricians.
1.5 Conversion, spare parts
All technical changes are prohibited. Only use OEM
spare parts.
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Summary of Contents for Krom Schroder valVario VAA 1
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Page 1: Table Of Contents
solenoid valve for air VAA oPeRAtInG InstRUCtIons · Edition 05.22 · EN · 03251614 1 sAFetY 1.1 Please read and keep in a safe place Please read through these instructions care- fully before installing or operating. Following the installa- tion, pass the instructions on to the operator. This unit must be installed and commissioned in accordance with the regulations and standards in force. -
Page 2: Checking The Usage
2.3 type label 2 CHeCKInG tHe UsAGe Mains voltage, electrical power consumption, ambient The valVario solenoid valve for air VAA is used for the temperature, enclosure, inlet pressure and installation staged control of industrial burners in cold air oper- position: see type label. ating mode. -
Page 3: Wiring
test points on both sides, see accessories. 4 WIRInG WARnInG Risk of injury! Please observe the following to ensure that no damage occurs: ➔ The seals in some gas compression fittings – Electric shocks can be fatal! Before working on are approved for temperatures of up to 70°C possible live components, ensure the unit is (158°F). -
Page 4: Setting The Bypass
Plug Valve open ➔ LV1 (+) = black, N (–) = blue Valve closed ➔ When installing two plugs on VAA a with position switch: label the sockets and plugs to avoid con- fusion. Valve open socket ➔ 1 = N (–), 2 = LV1 (+) Valve closed ➔... -
Page 5: Commissioning
5.1 Bypass flow rate 20° 30° 40° 50° 60° 70° 10° 80° 78,7 0° 90° 59,1 39,4 27,6 19,7 11,8 Q [m /h (n)] 11,9 18,7 37,3 74,7 747 1120 Q [SCFH] The characteristic flow rate curves have been meas- ured with the valve closed. -
Page 6: Replacing The Actuator
6.3 setting the damping speed on the VAA../L VAA with proof of closure switch ➔ The opening speed can be influenced by turning the nozzle screw on the damping unit. CAUtIon Attention! To avoid leakage, please observe the following: – If the nozzle screw is turned by more than 1 turn, the damping unit will leak and will have to be replaced. - Page 7 VAx 1, VAN 1 VAx 2–3, VAN 2 5 Slide seal under the second groove. 13 Open the gas solenoid valve and the gas supply. ➔ If the unit concerned has an O-ring in this place VAA with damping unit (arrow), replace the actuator as described here: VAA 1: use all seals from the actuator adapter set.
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Page 8: Replacing The Damping Unit
15 Switch off the solenoid actuator. The damping unit 8 RePLACInG tHe DAMPInG UnIt is lowered. slow opening/quick closing 1 Disconnect the system from the electrical power supply. 2 Shut off the air supply. ➔ Loosen the M3 setscrews (1.5 mm hexagon sock- et), but do not unscrew completely. -
Page 9: Maintenance
11 ACCessoRIes 11.1 Pressure switch for gas DG..VC The pressure switch for gas monitors the inlet pres- sure p and the outlet pressure p ➔ Monitoring the inlet pressure p : the pressure switch for gas is mounted on the inlet side. Monitoring the outlet pressure p : the pressure switch for gas is mounted on the outlet side. -
Page 10: Technical Data
11.2 Variable bypass VAA /B 12.2 Mechanical data For retrofitting on the VAA, the bypass can be supplied Gas types: clean air. The air must be clean and dry as an additional item. in all temperature conditions and must not contain condensate. -
Page 11: Designed Lifetime
Power consumption: 13 DesIGneD LIFetIMe type Voltage Power This information on the designed lifetime is based on VAA 1 24 V DC 25 W using the product in accordance with these operat- VAA 1 100 V AC 25 W (26 VA) ing instructions. Once the designed lifetime has been reached, safety-relevant products must be replaced. -
Page 12: Certification
15 CeRtIFICAtIon 16 DIsPosAL Devices with electronic components: 15.1 Certificate download Weee Directive 2012/19/eU – Waste electrical Certificates – see www.docuthek.com and electronic equipment Directive 15.2 Declaration of conformity At the end of the product life (number of op- erating cycles reached), dispose of the pack- aging and product in a corresponding recycling We, the manufacturer, hereby declare that the prod- centre.
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