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CLASS "A" SERVO REGULATED COMBINATION VALVES
www.honeyvell.energy
UNIVERSAL GAS VALVES
VR400/VR800 SERIES
APPLICATION
The VR400 Series class "A" servo regulated combination
valves are used for control and regulation of gaseous fuels in
gas fired power burners, atmospheric gas boilers, melting
furnaces, incinerators and other gas consuming appliances.
These servo regulated combination valves are available in
Three different versions:
VR415/VR815 (pipe sizes 1/2")
VR420/VR820 (pipe sizes 3/4")
VR425/VR825 (pipe sizes 1")
VR432/VR832 (pipe sizes 1¼")
VR434/VR834 (pipe sizes 1¼")
General
Description ........................................................................ 2
Features ............................................................................ 3
Technical
Specifications .................................................................... 4
Performance Characteristics ............................................. 5
Capacity curves .......................................................... 6 -10
Dimensional drawings .............................................. 11 - 13
Installation and Operation
Installation ....................................................................... 14
Adjustments and final checkout ...................................... 15
construction and working principles ................................ 17
Various
Standards and approvals ................................................ 19
ordering information ........................................................ 19
Replacement parts and accessories ............................... 23
1
PRODUCT HANDBOOK
Contents
EN2R-9033 0407R6-NE
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Summary of Contents for Honeywell VR400 Series
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Page 1: Table Of Contents
CLASS “A” SERVO REGULATED COMBINATION VALVES PRODUCT HANDBOOK APPLICATION The VR400 Series class “A” servo regulated combination valves are used for control and regulation of gaseous fuels in gas fired power burners, atmospheric gas boilers, melting furnaces, incinerators and other gas consuming appliances. -
Page 2: Description
DESCRIPTION FEATURES The VR400/VR800 series class “A” servo regulated • Class “A” servo regulated combination valve for combination valves are suitable for the control of gaseous control of gaseous fuels in gas consuming appliances fuels in gas consuming appliances according to international in accordance with international standards. -
Page 3: Specifications
SPECIFICATIONS The specifications described in this chapter are related to the Electrical equipment main gas valve (see also Performance Characteristics on DC current coils with combined rectifier inside the cover. page 4.). The VR400/VR800 series must be used in Electrical connections combination with a burner programmer. -
Page 4: Performance Characteristics
PERFORMANCE CHARACTERISTICS Opening time Repeatability of outlet pressure set point Dead time maximum 1 second. For all gases the maximum deviation from set point is ± 0.3 mbar or + 3% of the set point value, whichever is the VR434: maximum dead time <0.5 second. The first valve (V1) opens in less than 1 second. -
Page 5: Capacity Curves
CAPACITY CURVES AND RECOMMENDED WORKING AREA Capacity curves servo regulated combination gas valves Table 5: Capacity 1/2” DN15 air at ∆ ∆ ∆ ∆ p = 5 mbar Vn (m Air dv=1 50 60 Methane dv 0.64 Fig. 1. Capacity curves for VR415/VR815 series (DN15) EN2R-9033 0407R6-NE... - Page 6 CAPACITY CURVES AND RECOMMENDED WORKING AREA Capacity curves servo regulated combination gas valves Table 6: Capacity 3/4” DN20 air at ∆p = 5 mbar Vn (m Air dv=1 50 60 Methane dv 0.64 Fig. 2. Capacity curves for VR420/VR820 series (DN20) EN2R-9033 0407R6-NE...
- Page 7 CAPACITY CURVES AND RECOMMENDED WORKING AREA Capacity curves servo regulated combination gas valves Table 7: Capacity 1” DN25 air at ∆ ∆ ∆ ∆ p = 5 mbar Vn (m Air dv=1 50 60 Methane dv 0.64 EN2R-9033 0407R6-NE...
- Page 8 Fig. 3. Capacity curves for VR425/VR825 series (DN25) CAPACITY CURVES AND RECOMMENDED WORKING AREA Capacity curves servo regulated combination gas valves Table 8: Capacity 1¼” DN32 VR432 air at ∆ ∆ ∆ ∆ p = 5 mbar 14.5 Fig. 4. Capacity curves for VR432/VR832 series (DN32) EN2R-9033 0407R6-NE...
- Page 9 CAPACITY CURVES AND RECOMMENDED WORKING AREA Capacity curves servo regulated combination gas valves Table 8a: Capacity 1¼” DN32 VR434 air at ∆ ∆ ∆ ∆ p = 20 mbar Fig. 4a. Capacity curves for VR434/VR834 series (DN32) EN2R-9033 0407R6-NE...
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Page 10: Dimensional Drawings
DIMENSIONAL DRAWINGS VR415/VR815 AND VR420/VR820 Slow Open 133.4 107.4 Fast Open Optional: characterized opening mechanism 219.5 165.5 Pressure switch inlet pressure Optional G 1/2” Pressure switch for G 3/4” intermediate pressure 43.2 Fig. 5. Dimensional drawing VR415/VR815 (DN15) and VR420/VR820 series (DN20) EN2R-9033 0407R6-NE... - Page 11 DIMENSIONAL DRAWINGS VR425/VR825/VR432/VR832 KTCOMB15/20/25 Slow Open 185 * 133.4 107.4 ( * : 199 with KTVR32 ) Fast Open Optional: characterized opening mechanism 239.5 185.5 Pressure switch inlet pressure Optional G 1/2" ... Pressure switch for G 1 1/4” intermediate pressure 43.2 Fig.
- Page 12 DIMENSIONAL DRAWINGS VR434/V834 WITH FLANGE KIT KTVR32 EXPLANATION OF NUMBERED PRESSURE TAPS: P - PILOT GAS 1 - INLET PRESSURE 2 - INTERMEDIATE PRESSURE 3 - OUTLET PRESSURE OPTIONAL: PRESSURE SWITCH FOR INLET AND/OR INTERMEDIATE PRESSURE OPTIONAL: CHARACTERIZED OPENING MECHANISM OPTIONAL: PRESSURE SWITCH INLET OR INTERMEDIATE PRESSURE...
- Page 13 DIMENSIONAL DRAWINGS VR434/V834 WITH FLANGE KIT KT434FG EXPLANATION OF NUMBERED PRESSURE TAPS: P - PILOT GAS 1 - INLET PRESSURE 2 - INTERMEDIATE PRESSURE 3 - OUTLET PRESSURE OPTIONAL: PRESSURE SWITCH FOR INLET AND/OR INTERMEDIATE PRESSURE DIMENSIONS OF O-RING CHAMBER (IN AND OUTLET SIDE) OPTIONAL: CHARACTERIZED OPENING MECHANISM...
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Page 14: Installation
INSTALLATION valve. IMPORTANT Electrical connection Read these instructions carefully. Failure to follow the intructions could damage the product or cause a CAUTION hazardous condition. Check the ratings given in the instructions and on the • Switch off power supply before making electrical product to make sure the product is suitable for your connections. -
Page 15: Adjustments And Final Checkout
ADJUSTMENTS AND FINAL CHECKOUT The procedures described in this chapter are related to the adjustments on the main gas valve. For adjustments on the other additional functionalities (e.g. pressure switch), refer to the included instruction sheet of the product in question in the package. - Page 16 Opening speed adjustment (see fig. 14.) valve. Opening speed is factory set at customer settings, the adjustment screw is sealed. Flow regulation Opening speed regulation Step pressure Fig. 16. Pressure tap points for time VR415/VR4425/VR420/VR432 Fig. 15. Characterized opening. Adjustment outlet pressure •...
- Page 17 CONSTRUCTION AND WORKING PRINCIPLES VR415/420/425/432 Servo pressure regulation working. When both operators are energized, inlet gas flows through the servo orifice into the servo system and into the regulator. The VR400/VR800 series servo regulated combination gas This servo gas moves the regulating diaphragm upwards. As valves are 2 x class A fail safe shut-off valves.
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Page 18: Construction And Working Principles
CONSTRUCTION AND WORKING PRINCIPLES VR434 Servo pressure regulation working. As soon as the regulating valve has opened, the outlet pressure generated by the VR400/VR800 series will be The VR434/VR834 series servo regulated combination gas sensed by the regulator diaphragm via the feedback channel. valves are 2 x class A fail safe shut-off valves. -
Page 19: Standards And Approvals
STANDARDS AND APPROVALS Standards Approvals The VR400/VR800 series servo regulated combination valves The VR400/VR800 series servo regulated class ”A” have been designed to meet the European Standard EN 126. combination valves conform with the following EC-directives: • Gas Appliance Directive (90/396/EEC) The safety shut-off valve meets class “A”... - Page 20 VR400. The second valve (V2) can be either fast or slow (= with flow VQ425AB1009 - VWXY O.S. number Position specification Table 1: VR400 series positions and additional fuctionalities chart Type Code Positions •...
- Page 21 REPLACEMENTS VR434 IP Transparent EV 2 Coloured Transparent EV 1 Coloured VR425 / VR432 Coloured EV 1 Transparent Transparent EV 2 Coloured Fig. 20. Exploded view of the VR400/VR800 series EN2R-9033 0407R6-NE...
- Page 22 Replacement of coils (see fig. 20.) Replacement of hydraulic slow open unit (see fig. 20.) WARNING WARNING Disconnect power supply before 1. Remove screws (1) on top of cover. Disconnect power supply before 2. Lift cover (2). 1. Remove screws (1) on top of cover. 3.
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Page 23: Replacement Parts And Accessories
REPLACEMENT PARTS AND ACCESSORIES Table 3: Rectifier boards for VR400/VR800 series IMPORTANT Model Order Rated Packing qty When ordering replacement coils include the number Voltage complete valve O.S. number, in order to provide the (Vac) coil with proper product identification sticker. IP application CSE20026 WARNING... - Page 24 Home and Building Control Combustion Control Center Europe Honeywell BV Phileas Foggstraat 7 7821 AJ Emmen The Netherlands Tel.: +31 (-)591 695911 Fax: +31 (-) 591 695200 http://europe.hbc.honeywell.com EN2R-9033 0407R6-NE...
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