Honeywell VR400 Series User manual

CONTENTS
· Edition 05.23 · 32-00285-01 · EN
EN – www.docuthek.com
VR400/VR800 Series
Class "A" Servo Regulated Combination Valves
1 Safety ................................1
2 Checking the usage .....................2
3 Installation ............................3
4 Wiring................................4
5 Tightness test..........................4
6 Adjust valve ...........................4
7 Adjust servo regulator....................5
8 Maintenance ..........................7
9 Troubleshooting ........................8
10 Accessories ..........................8
11 Technical data ........................9
12 Designed lifetime .....................11
13 Certification .........................12
14 Logistics ............................12
15 Disposal ............................12
1 SAFETY
1.1 Please read and keep in a safe place
Please read through these instructions
carefully before installing or operating. Following the
installation, 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.
OPERATING INSTRUCTIONS

VR400/VR800 · Edition 05.23
EN-2
2 CHECKING THE USAGE
The VR400 Series class “A” servo regulated combi-
nation valves are used for control and regulation of
gaseous fuels in gas fired power burners, atmos-
pheric gas boilers, melting furnaces, incinerators
and other gas consuming appliances.
This function is only guaranteed when used within
the specified limits – see page 9 (11 Technical
data). Any other use is considered as non-compliant.
Check the ratings given in the instructions and on
the product to make sure the product is suitable for
your application.
The combination gas valve is available in various
pressure regulator types:
Pressure regulator
VR..A..: Outlet pressure is held at a constant value
regardless of fluctuations of inlet pressure. The
outlet pressure can be adjusted to 3–37mbar.
Hi-Lo regulator
VR..P..: In addition to the servo pressure regulation
the unit includes a high-low control. Within the rang-
es specified a high and a low outlet pressure can be
mechanically adjusted and electrically selected.
Integrated gas/air 1:1
VR..V..: The 1:1 gas/air regulator equals the gas
pressure to the supplied air pressure. In the working
mode the gas pressure drops across the main
burner injector is regulating and/or modulating equal
to the air pressure drop across the air restriction.
VR..F..: The 1:1 gas/air regulator with an additional
venturi mixing unit (VMU) and a fan, are used for
modulating premixing units, such as gas burners,
gas boilers, roof units, fresh air units and process
applications. See instruction sheet VMU "Mixing unit
for VR400VX/ VR800VX gas controls" (EN1C-0001)
www.docuthek.com.
2.1 Type code
VR Class "A" combination gas valve
4Line voltage
8Low voltage
Nominal size valveseat (pipe size)
15 DN 15 (pipe size 1/2")
20 DN 20 (pipe size 3/4")
25 DN 25 (pipe size 1")
32 DN 32 (pipe size 1 1/4")
34 34 (pipe size 1 1/4")
Type of pressure regulator
APressure regulator
F Integrated gas/air 1:1 with venturi mixing unit
PHi-Lo regulator
VIntegrated gas/air 1:1
Characteristics second valve
ASecond valve fast opening, valves
opened simultaneously
BCharacterizedopening, valves opened
simultaneously
ESecond valve fast opening, valves
opened independently
FCharacterized opening, valves opened
independently
xxxx Specification number
2.2 Part designations
1:1
Hi-Lo
Standard
4
7
1
7
6
2
9
8
5
3
3
1 Main body
2 Cover
3 Cap
4 Characterized opening (slow opening)
5 Servo regulator valve:
Pressure regulator or
Hi-Lo regulator or
Integrated gas/air 1:1
6 Pressure tap points
7 Inlet and outlet flange (Option)
8 Electrical connection
(connector type: ISO 4400/DIN43650 Form A)
9 Pressure switches (Option)

VR400/VR800 · Edition 05.23
EN-3
3 INSTALLATION
CAUTION
Incorrect installation
Please observe the following to ensure that the
unit is not damaged during installation and oper-
ation:
– Sealing material and dirt, e.g. thread cuttings,
must not be allowed to get into the valve
housing.
– Dropping the device can cause permanent
damage. In this event, replace the entire device
and associated modules before use.
– Turn off gas supply before installation.
– Disconnect power supply to the valve actuator
before beginning the installation to prevent
electrical shock and damage to the equipment.
– Do not remove the seal over valve inlet and
outlet, until ready to connect piping.
– The valve must be installed so that the arrow on
the valve points in the direction of the gas flow
(gas pressure helps to close the valve).
– Screws which are protected against unauthor-
ised removal must not be loosened. This will
invalidate the warranty!
3.1 Installation position
Solenoid actuator in the vertical upright position or
tilted up to the horizontal, not upside down.
Gas valves with integrated gas/air 1:1: The factory
settings are made in a horizontal installation position.
A vertical installation may require readjustments.
The distance between the gas valve and the wall/
ground, must be at least 30 cm.
➔The valve can be mounted up to ±90 degrees
from this position without affecting the fuel/air
metering at medium and high firing rates (3000
to 5000 rpm of the blower), but at lower firing
rates (1000 rpm) the fuel might be reduced up
to 10% when the valve is not mounted horizontal.
To counter this, the low fire gas flow may be
carefully field adjusted for non-horizontal mount-
ing as described below.
3.2 Install valve
1 Take care that dirt does not enter the gas valve
during handling.
2 Remove flanges from the valve (if factory
mounted).
3 Use a sound taper fitting with thread according
to ISO 7-1 or new, properly reamed pipe free
from swarf.
4 Apply a moderate amount of good quality thread
compound to the pipe for fitting only, leaving the
two end threads bare, PTFE tape may be used
as an alternative.
5 Screw the flanges onto the pipes.
6 Ensure that the inlet and outlet flanges are in line
and separate from each other enough to allow
the valve to be mounted between the flanges
without damaging the “O”-ring.
7 Place the “O”-ring. If necessary grease it slightly
to keep it in place.
8 Mount the gas valve between the flanges using
the bolts for each flange.
9 Complete the electrical connections as
instructed in the Electrical Connection section.
10 Complete the electrical connections as
instructed in the wiring section.
3.3 Connections
There are 1/8” G pressure taps at the flanges.
At the main body flange connections (1/8” G) are
provided to mount either an:
– pressure switches (min. or max.)
– two connections for Intermittent Pilot (valves
opened independently)
3.3.1 Pressure tap points
The following pressures can be measured:
1Inlet pressure
2Inlet pressure
3Interim pressure - unreguleted (pressure between
the two shut-off valves)
4Outlet pressure - reguleted
PPilot gas pressure
➔The corresponding numbers can be found on the
sides of the valve. Pressure points 1 and 4 are
located on top of the flanges.
➔A pressure switch can be mounted to 2, P or 3.
(C60VR: Only 2 and 3)
1 4
2 P 3
3P
2
Pressure tap points for small body size models.
4
P 33
P 33
2
1
2
Pressure tap points for large body size model

VR400/VR800 · Edition 05.23
EN-4
3.3.2 Legend
Strainer
Pressure
regulator
Pressure
switch
V1
(SSOV)
V1
(SSOV)
Safety
shut-off valve
4 WIRING
WARNING
Risk of injury!
Please observe the following to ensure that no
damage occurs:
– Electric shocks can be fatal! Before working on
possible live components, ensure the unit is
disconnected from the power supply.
– Switch off power supply before making electrical
connections.
– All wiring must comply with local codes,
ordiances and regulations.
– Use lead wire which can withstand 105°C
ambient.
1 Disconnect the system from the electrical power
supply.
2 Shut off the gas supply.
➔Before wiring, the fitter should ground himself.
3 Wire as shown on the connection diagram.
➔Three pin electrical plug connector according to
ISO 4400/DIN43650 (Form A).
VR..X models with independent operated
solenoid valves
1
2
3
2 = L1
V1
1 = N
3 = L1
V2
A
VR..X models with simultaneous operated
solenoid valves
1
2
+
1 = N
2 = L1
3
4 After successful wiring, continue with page
4 (Tightness test on the pipe connections
after installation or service is necessary.) and
page 4 (6 Adjust valve).
5 TIGHTNESS TEST
Tightness test on the pipe connections after installa-
tion or service is necessary.
Use a high quality gas leak detection spray to spray
the pipe connections and gaskets.
Start the appliance and check for bubbles as
described below.
1 Close the VR400/VR800 combination valve.
➔Both valves are closed.
2 To be able to check the tightness, shut off the
downstream pipeline close to the valve.
3
0
4
5
0
6 Open the VR400/VR800 combination valve.
7
0
8
9 Tightness OK: open the pipeline.
➔Unit leaking: Replace flat seal on flange. Then
check for tightness once again.
➔Unit leaking: remove the unit and return it to the
manufacturer.
6 ADJUST VALVE
➔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.
WARNING
Incorrect installation
Please observe the following to ensure that the
unit is not damaged during adjustment and
operation:
– Adjustments must be made by qualified
personel only.
– To ensure a safe closing of the valves, it is
essential that voltage over the terminals of
operators is reduced to 0 Volts.
2nd valve = fast opening
Flow rate can be adjusted.
2nd valve = slow opening
The following characteristics can be adjusted.
– Flow rate
– Step pressure
– Opening speed

VR400/VR800 · Edition 05.23
EN-5
Important
➔To ensure a satisfactory setting of the valve the
pressure drop over the valve should be at least
10% of the supply pressure or 2,5mbar which
ever is the greatest.
6.1 Adjust flow rate
2nd valve = fast opening
1 2
3 Turn adjustment screw counter-clockwise to
increase or clockwise to decrease the flow rate.
4 Replace cap on top of the coil.
2nd valve = slow opening
1 2
3 Turn wrench counter-clockwise to increase or
clockwise to decrease the flow rate.
4 Replace cap on top of the coil.
6.2 Adjust step pressure
Step pressure adjustment
1 2
3 Turn screw driver counter-clockwise to increase
or clockwise to decrease step pressure.
4 Replace cap on top of the coil.
6.3 Adjust opening speed
Opening speed adjustment
1 2
3 Turn screw driver counter-clockwise to increase
the opening speed and therefore the time till full
opening will decrease.
4 Turn screw driver clockwise to decrease the
opening speed and therefore the time till full
opening will increase.
time
Opening speed regulation
p
outlet
Step pressure
Flow regulation
Characterized opening
5 Replace cap on top of the coil.
7 ADJUST SERVO REGULATOR
WARNING
Incorrect adjustment
Please observe the following to ensure that the
unit is not damaged during adjustment and
operation:
– If the appliance manufacturer supplies checkout
and/ or service and maintenance instructions
carefully follow them. If these instructions are
not provided, follow the procedure described
below.
➔In some applications, adjustment screws are
sealed as well, to avoid drift of factory calibration
during transportation. These sealings can be
broken when needed for readjustments, but only
by trained and authorized technicians.
7.1 Adjust outlet pressure
3
2
1
1 Slotted cap
2 Adjustment screw
3 M5 pressure feedback connection
1 Disconnect pressure feedback connection (if
applicable).
2 Energize both electric operators in order to have
gas input to burner.
3 Check gas input to the appliance using a
clocking gas meter or alternatively a pressure
gauge connected to the outlet pressure tap.
4 Remove the slotted cap on the pressure
regulator using a slotted screwdriver. This will
expose the adjustment screw.
5 Slowly turn adjustment screw with the T40 screw
driver until the burner pressure required is
recorded on the pressure gauge. Turn adjust-
ment screw clockwise to increase or coun-
ter-clockwise to decrease gas pressure to the
burner.

VR400/VR800 · Edition 05.23
EN-6
6 For non-regulating mode (LP gas) turn adjust-
ment screw clockwise until it stops.
7 Replace pressure regulator cap.
8 Connect pressure feedback connection (if
applicable).
Checkout of adjustment
9 After any adjustment, set appliance in operation
and observe several complete cycles to ensure
that all burner components function correctly.
7.2 Adjust high-lo regulation
CAUTION
Incorrect adjustment
Please observe the following:
– Allow time for pressure to stabilize before
making adjustments.
– It is recommended that the high–low regulator is
operated a few time to ensure correct setting.
– It should be prevented, that high–low regulator
is exposed to unnecessary forces because of
wiring.
➔Good and reliable performance of high–low
regulator is not only dependent on the high–low
regulator itself, but also upon the reliability of the
controller.
1
2
4
3
1 Cap
2 Adjustment screw for max.pressure setting
3 Adjustment screw for min.pressure setting
4 M5 pressure feedback connection
➔Good and reliable performance of high–low
regulator is not only dependent on the high–low
regulator itself, but also upon the reliability of the
controller.
1 Before any adjustment can be made, cap has to
be removed by putting a small screw driver in
one of the slots and lifting the cap carefully while
at the same time supporting it opposite to the
screw driver.
2
WARNING
Incorrect adjustment
Please observe the following to ensure that the
unit is not damaged during adjustment and
operation:
– Maximum pressure setting must first be
adjusted then minimum pressure setting can be
adjusted.
– Any adjustment of maximum pressure setting
influences minimum pressure setting.
– The outlet pressure setting should never be
above the range specified.
Regulator output pressure range:
Pressure
range
(mbar)
Setting
low high
4–37 4 - Pmax (Pmax < Phigh) 12–37
More settings, see page 10 (11.4.1 Performance
hi-lo regulator).
Adjustment of maximum pressure setting
➔An 8mm wrench is needed.
3 Disconnect pressure feedback connection (if
applicable)
4 Connect a suitable pressure gauge to the pipe
line or to the outlet pressure tap of the combina-
tion gas control concerned to measure burner
pressure (measuring point must be as near to
burner as possible).
5 Energize high–low regulator, set combination gas
control in operation and wait until an outlet
pressure is recorded on the pressure gauge.
6 Use a 8mm wrench to turn adjustment screw for
maximum pressure setting clockwise to increase
or counter-clockwise to decrease pressure, until
desired maximum burner pressure is obtained.
7
8 Check maximum pressure setting after several
times.
➔For further adjustment the cap needs to stay off.
9 Now proceed with adjusting/checking the
minimum pressure setting.
Adjustment of minimum pressure setting
➔A 3,5mm screw driver is needed.
10 Disconnect pressure feedback connection (if
applicable).
11 Connect a suitable pressure gauge to the pipe
line or to the outlet pressure tap of the combina-
tion gas control concerned to measure burner
pressure (measuring point must be as near to
burner as possible).
12 Disconnect electrical connection of high-low
regulator coil.

VR400/VR800 · Edition 05.23
EN-7
13 Set combination gas control in operation and
wait until an outlet pressure is recorded on the
pressure gauge.
14 When minimum pressure setting needs
adjustment, then use a 3,5mm screw driver to
turn adjustment screw for minimum pressure
setting clockwise to increase or counter-clock-
wise to decrease pressure, until desired
minimum burner pressure is obtained.
15
16 Wire high-low regulator coil in circuit.
17 Check maximum pressure setting and re-adjust if
necessary. Check minimum pressure setting
again.
18 When high and low pressure setting are correct,
replace cap and connect pressure feedback
connection (if applicable).
Checkout of adjustment
19 After any adjustment, set appliance in operation
and observe several complete cycles to ensure
that all burner components function correctly.
7.3 Adjust gas/air 1:1 regulation
WARNING
Incorrect adjustment
High inlet pressures as used for gas G30 or G31,
can cause oscillation. This is dependent on type of
appliance. If oscillation occurs:
– The oscillation shall not exceed 10 % of the
outlet pressure, with a stable air pressure signal.
– The oscillation has to be verified for the
complete modulation band of the appliance.
– Please contact your Honeywell representative if
the maximum of 10 % is exceeded.
The 1:1 gas/air regulator assembly has an air pres-
sure connection and an offset adjustment screw.
The 1:1 gas/air regulator equals the gas pressure to
the supplied air pressure. With the offset adjustment
screw it is possible to adjust the offset. (Offset =
Pgas - Pair)
3
2
1
1 Cap screw
2 Offset adjustment screw
3 M5 pressure feedback connection
1 Remove cap screw with a torque bit (or slotted
screwdriver) to expose offset adjustment screw.
2 Check gas supply pressure to the appliance
using a pressure gauge connected to the inlet
pressure tap.
3 Start fan and check air flow.
4 Energize both electric operators in order to have
gas input to burner and ignite boiler.
5 Adjust CO2% at the desired value at low output
with offset adjustment screw.Turn offset
adjustment screw clockwise to increase CO2%.
6 Operate boiler on high output. (Only modulating
applications).
7 Replace cap screw and tighten pressure taps.
Checkout of adjustment
8 After any adjustment check pressure taps and
gas connections with an approved leak
detection fluid for gas leakage.
9 After any adjustment set appliance in operation
and observe several complete cycles to ensure
that all burner components function correctly.
7.3.1 Specify application parameters (gas/air
1:1)
Define maximum allowable deviation on ΔPgas
at minimum ΔP air in new appliance for reliability
reasons.
The application parameters can effect the Offset
Adjustment accuracy during cycling and life cycling
of the control system.
These parameters are (in sequence of importance):
– Start pressure (the lower the better)
– Ambient temperature (the lower the better)
It is therefore advisable to verify the offset adjust-
ment at service interval by CO2measurement or
ΔPgas (burner orifice pressure drop) at minimum
ΔPair (pressure drop over air restriction).
ΔPgas measured on pressure tap of combination
gas control (highest pressure) can deviate from
real ΔP (burner orifice pressure drop) due to gas
turbulence and/or restrictions in the application. The
deviation should be defined and documented. The
measurement accuracy should be +/- 1Pa.
8 MAINTENANCE
It is recommended to check the settings annualy
and readjust them if necessary.

VR400/VR800 · Edition 05.23
EN-8
9 TROUBLESHOOTING
WARNING
Risk of injury!
Can cause severe injury, death of property dam-
age.
– Use extreme caution when troubleshooting; line
voltage is present.
– Do not replace the valve until all other sources
of trouble are eliminated.
? Fault
! Cause
• Remedy
? The valve does not open when the thermo-
stat or controller calls for heat?
! No voltage at the valve lead wires.
• Check for voltage at the valve lead wires or
terminal block.
! If there is no voltage at the valve lead wires or
terminal block.
• Make sure, that voltage is connected to the
master switch.
• Make sure, that the master switch is closed
and overload protection (circuit breaker, fuse,
or similar device) has not opened the power
line.
! There is still no voltage at the valve lead wires.
• If there is still no voltage at the valve leadwires
or terminal block, make sure all appropriate
contacts in the thermostat or controller, limits
and flame safeguard control are closed. If one
or more are open, determine the cause(s);
correct the trouble and proceed.
! There is proper voltage at the valve but the valve
still does not open.
• check for normal gas pressure.
! Is it not possible for the fault to be eliminated
with the measures described above?
• Remove the unit and return it to the manufac-
turer for inspection.
? If the valve does not close when one or
more of the appropriate contacts in the
thermostat, controller, limits or flame safe-
guard control is open.
! Is the valve connected in the correct circuit?
• Make sure the valve is wired in the correct
circuit
! Valve is not wired correctly.
• Open the master switch to remove power
from the valve. If the valve closes now, check
the wiring for the valve and correct the wiring
as necessary.
! Is there a short circuit?
• Check for a short in the electrical circuit and
repair it as necessary.
10 ACCESSORIES
10.1 Flange kit
Inlet flanges and outlet flanges are available as
accessories.
Scope of delivery:
1 flange with sealing plug,
1 “O”-ring and screws,
1 pressure tap nipple fitted
Flange kits
O.S. number Size (Rp) Remarks
KTCOMB15 1/2" pressure tap
1/8"G
KTCOMB20 3/4" pressure tap
1/8"G
KTCOMB25 1” pressure tap
1/8"G
KTVR32 1¼” pressure tap
1/8"G
10.2 Mixing unit VMU
VR..F.. (Integrated gas/air 1:1 with venturi mixing
unit), see instruction sheet VMU "Mixing unit for
VR400VX/ VR800VX gas controls" (EN1C-0001)
www.docuthek.com.
10.3 Valve connection plug
Electrical connections Standard DIN plug connector
according DIN43650 (Form A)
-CO020012 (black). Not included.
10.4 Pressure switch for gas C60VR4
The pressure switch for gas monitors the inlet pres-
sure or the intermediate pressure.
inlet pressure intermediate pressure
Scope of delivery:
1xpressure switch for gas,
2xself-tapping retaining screws,
1xsealing ring,
1xprotection cap.
10.4.1 Pressure switch connection plug
Electrical connections Standard DIN plug connector
according DIN43650 (Form A)
-CO020014 (gray). Not included.

VR400/VR800 · Edition 05.23
EN-9
10.4.2 Adjust switching point
➔The switching point is adjustable via hand wheel.
1 2 3
Type
Adjusting
range
(adjusting
tolerance =
±15% of the
scale value)
Mean
switching
differential at
min. and max.
setting
[mbar] ["WC] [mbar] ["WC]
C60VR40017 2–17 0,8–
6,8 0,7–1,7 0,3– 0,8
C60VR40040 5–40 2–16 1–2 0,4–1
C60VR40110 30–110 12–44 3–8 0,8–
3,2
➔Deviation from the switching point during testing
pursuant to EN1854 Gas pressure switches:
±15%.
11 TECHNICAL DATA
The specifications described in this chapter are
related to the main gas valve. The VR400/VR800
series must be used in combination with a burner
programmer.
Models:
Type Pipe sizes1)
Small body size models
VR415/VR815 DN 15 1/2"
VR420/VR820 DN 20 3/4"
VR425/VR825 DN 25 1"
VR432/VR832 DN 32 1 1/4"
Large body size models
VR434 DN 32 1 1/4"
1) All internal pipe thread according to ISO 7-1
Minimum regulating capacity:
VR415/VR815: 1m3/hr
VR420/VR820: 1m3/hr
VR425/VR825: 1,5m3/hr
VR432/VR832: 1,5m3/hr
VR434: 1,5m3/hr
Maximum operating pressure
All models: 100mbar,
except: VR425/432/825/832AB/AF/PB/PF: 70mbar
(slow opening models DN25/DN32 with adjustable
outlet pressure 3–37mbar).
VR434 can be applied to a maximum of 100mbar,
but needs to be adjusted to nominal applied inlet
pressure.
Torsion and bending stress
Pipe connections meet group 2 according to
EN13611 requirements.
Valve Classification:
Class A + A according EN161
Regulator Classification:
Class C according EN88-1
Supply voltages:
Line voltage: 230V AC, 50/60Hz
Low voltage: 24V AC, 50/60Hz
Electrical equipment:
DC current coils with combined rectifier inside the
cover.
Electrical connections:
Standard DIN plug connector according DIN43650
Ambient temperature range:
-15 to +60°C (5 to +140°F)
Storage temperature = transport temperature:
-20 to +40°C (-4 to +104°F).
Enclosure: IP 40
Body material: Aluminum alloy die cast
Strainer:
Fine mesh screen (diameter 0,34mm), AISI 303
steel, serviceable after removing inlet flange screws.
Meets requirements for strainer according EN161.
Power consumption:
Type Voltage V1 V2
W mA W mA
VRx15/
VRx20 230 15,9 70 15,9 70
VRx15/
VRx20 24 15,2 640 15,2 640
VRx25/
VRx32 230 24,1 106 24,1 106
VRx25/
VRx32 24 30,9 1300 30,9 1300
VR4341) 230 11 76 11 76
VR4342) 230 49 220 49 220
1) At normal operation
2) At start up
11.1 Tightening torque
Recommended tightening torques for the connec-
tion parts:
Screw type Tightening torque
Throttle screw
adjustment
max. 50Ncm
min. 4Ncm
Flanges max. 100Ncm
min. 0.5Ncm
Pressure tap plug max. 5Nm
min. 2Nm
Pressure switch
mounting 2.5 ± 1.5Nm
Pressure switch
cover 1.2 ± 0.2Nm
Inlet/outlet flange
screw 4.3 ± 0.4Nm
Retarder cap 4.3 ± 0.4Nm

VR400/VR800 · Edition 05.23
EN-10
11.2 Perfomance characteristics
Opening time:
Dead time maximum 1 second.
VR434: maximum dead time <0,5 second.
The first valve (V1) opens in less than 1 second.
The second valve (V2) can be either a fast opening,
or slow opening valve with adjustable characteristic
(VR..XB and VR..XF models).
Maximum allowable leakage:
Each VR400 combination valve has been factory
tested to meet the following leakage requirements.
Outerwall, safety valve and main valve = 40 cm3/h
for up to DN 25 and 50 cm3/h for DN 32 at test
pressure of 6mbar and 1.5 x maximum operating
pressure.
High pressure test:
In the “OFF” condition, the VR400 valve will with-
stand 1,5bar (air) inlet pressure without damage.
Closing time (V1, V2):
Less than 1 second for all valves.
Maximum working frequency:
1 cycle per minute.
Duty cycle:
Coil suitable for permanent energization in coopera-
tion with ignition controller.
Operational voltage range:
The combination gas valve will function satisfactory
between 85% and 110% of the rated voltage.
11.3 Pressure regulator
Which reaches 50% of the adjustable outlet
pressure within 0,5 seconds after start flow or a
characterized opening valve which is adjustable
from 1 up to 30 seconds, at rated capacity. The
opening characteristic is factory set at approximate-
ly 6 seconds at the following conditions:
– measured at 80% of rated capacity
– 30mbar supply pressure
– nominal voltage
– 20°C
– 2,5mbar pressure drop
– no step pressure
Due to the influence of ambient temperature (-15
to +60°C) the adjusted opening time of 6 seconds
measured at 80% of adjusted flow rate can vary ± 4
seconds.
Tap sensitivity of outlet pressure set point:
For all gases the maximum deviation may be 1mbar.
Repeatability of outlet pressure set point:
For all gases the maximum deviation from set point
is ± 0,3mbar or + 3% of the set point value, which-
ever is the greatest.
Total set point shift
Pressure range
(mbar) Tolerance
3–37
6% of the set point value or
1mbar whichever is the
greatest
11.4 Hi-lo regulator
Pressure feedback connection:
The high–low regulator with an M5 thread connec-
tion for pressure feedback.
Minimum regulation capacity:
0,31m3/h
Maximum operating pressure:
The maximum pressure Pmax. indication on the
housing of the combination gas control is the maxi-
mum pressure at which it functions safely.
However, the maximum operating pressure is limited
by the pressure range of the high–low pressure reg-
ulator concerned: 50mbar for pressure range 4–37.
Electrical connection:
The high–low coil is provided with an earth terminal.
The high–low coil is provided with quick connect
terminals suitable for 6,3mm.
Connector: DIN43650 From B
Regulator output pressure range:
Pressure
range
(mbar)
Setting
low high
4–37 4 - Pmax (Pmax < Phigh) 12–37
Electrical data:
Supply
voltage
Color of
coil
Current
(mA)
Power
consump-
tion
220/240V~,
50Hz black 17,4/19 3/3,2
11.4.1 Performance hi-lo regulator
Maximum allowable leakage:
Each hi-lo regulator has been factory tested to meet
the following leakage requirements.
– outerwall: 24 cm3/h at test pressure of 150mbar.
– seat leakage: 110 cm3/h at test pressure of
9mbar.
– pressure feedback leakage: 650 cm3/h at test
pressure of 8mbar.
Total set point shift:
The total set point shift of the low and the high outlet
pressure caused by repeatability, tapping (tapping
impact 2Ncm) and life cycle shall not exceed.
Pressure range
(mbar)
Min. low
setting
(mbar)
Max high
setting
(mbar)
4–37 -2,5/+2,5 -4,0/+3,0
Repeatability:
Repeatability should checked after five power inter-
ruptions, maximum deviation in outlet pressure may
not exceed the values as indicated below.
Pressure range
(mbar)
At min. set
point (mbar)
At max. set
point (mbar)
4–37 0,5 1
Tap test:
After tapping the control (tapping impact 2Ncm
max.) the deviation of the outlet pressure may be
1mbar max.

VR400/VR800 · Edition 05.23
EN-11
Hysteresis:
The deviation in the outlet pressure at minimum
setting if hi-lo regulator is swiched ON and OFF may
not exceed: 0,5mbar for 4–37mbar range.
Shift on mechanical set point after live cycle:
The set point shift after life cycle (with switching
speed of maximum 40 cycles per minute at ambient
temperature) without re-adjustment of the high or
low setting may not exceed.
Pressure range
(mbar)
At min. set
point (mbar)
At max. set
point (mbar)
4–37 +1,2/-0,8 +0,7/-1,8
Drift on mechanical set point during ambient tem-
perature cycle:
The variation in outlet pressure caused by tempera-
ture changes in the ambient temperature between 0
and 70°C may be 1mbar maximum.
Outlet pressure characteristic
low
t
t1t2
high
shift
p
Operable voltage range:
The hi-lo regulator will funtion satisfactory between
85% and 110% of the rated voltage.
Rated voltage Operable Voltage
220/240V, 50Hz 187–264V
Pressure feedback:
Within the limits of the capacity of the combination
gas control, a pressure deviation on the pressure
feedback connection must result in a outlet pres-
sure deviation of the same value with an accuracy
of p 5% of the adjusted outlet pressure or 0,4mbar,
whichever is the greatest.
11.5 Integrated gas/air 1:1
The 1:1 gas/air regulators are rated for the 2nd and
the 3rd family gases ( G20, G25, G30 and G31).
Opening time:
Time till Poutlet ≥ 100Pa = < 2s (Conditions: Pinlet =
3000Pa).
Pressure regulation function:
Class B according to EN88.
Seat with throughput opening ø 1mm.
Air pressure connection:
Servo pressure regulator has an M5 threaded
hole to make connection between regulator and
appliance.
Outlet pressure:
Outlet pressure is pressure drop across the main
burner orifice.
Maximum inlet pressure:
100mbar
Minimum regulation capacity:
1m3/h air at Δp = 0,5mbar across main burner
orifice at 30mbar operating pressure maximum
Minimum operating gas pressure:
15mbar
Maximum operating gas pressure:
The Pmax. 100mbar indication on the housing is the
maximum inlet pressure at which the gas control
functions safely.
Offset range:
-0,4mbar to + 0,2mbar (with coils sidewards)
-0,24mbar to + 0,36mbar (with coils on top)
Maximum air pressure:
8mbar without outlet gas pressure (before ignition)
40mbar with outlet gas pressure present (after
ignition)
Oscillation:
For all versions except gas/air 1:1: Maximum oscilla-
tion under all circumstances 0,5mbar.
Accuracy:
)
· 100 %
Typical accurancy
= (∆P
air
∆Pgas - ∆Pair
ΔPair = pressure drop over air restriction
ΔPgas = burner orifice pressure drop
Accuracy includes tap sensitivity, repeatability, inlet
pressure dependency, hysteresis and temperature
influence and is shown below.
30%
25%
20%
15%
10%
5%
0%
50 100
After 500.000 cycles
50
200
∆Pgas = burner orifice pressure drop (Pa)
Ambient temperature range: 0–70°C
Typical ∆Pair at start and stop: 6 mbar
Before life test
Typical accuracy
12 DESIGNED LIFETIME
Type Number of cycles
VR415/VR815 500,000
VR420/VR820 500,000
VR425/VR825 500,000
VR432/VR832 500,000
VR434 500,000

VR400/VR800 · Edition 05.23
EN-12
© 2023 Honeywell International Inc.
We reserve the right to make technical modifications in the interests of progress.
The Honeywell Thermal Solutions family of products includes
Honeywell Combustion Safety, Eclipse, Exothermics, Hauck,
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FOR MORE INFORMATION
13 CERTIFICATION
13.1 Certificate download
Certificates – see www.docuthek.com
13.2 Declaration of conformity
We, the manufacturer, hereby declare that the
product VR4xx/VRBxx with product ID No. CE-
0063AT1198 complies with the requirements of the
listed Directives and Standards.
Directives:
– 2014/35/EU – LVD
– 2014/30/EU – EMC
– 2011/65/EU – RoHS II
– 2015/863/EU – RoHS III
Regulation:
– (EU) 2016/426 – GAR
Standards:
– EN88-1:2011+A1:2016
– EN126:2012
– EN60335-1 cl30:2016
The relevant product corresponds to the tested type
sample.
The production is subject to the surveillance proce-
dure pursuant to Regulation (EU) 2016/426 AnnexIII
paragraph3.
13.3 UKCA certified
Gas Appliances (Product Safety and Metrology etc.
(Amendment etc.) (EU Exit) Regulations 2019)
BS EN88-1:2011+A1:2016
BS EN126:2012
13.4 REACH Regulation
The device contains substances of very high con-
cern which are listed in the Candidate List of the
European REACH Regulation No.1907/2006. See
Reach list HTS at www.docuthek.com.
13.5 China RoHS
Directive on the restriction of the use of hazardous
substances (RoHS) in China. Scan of the Disclo-
sure Table China RoHS2, see certificates at www.
docuthek.com.
14 LOGISTICS
Transport
Protect the unit from external forces (blows, shocks,
vibration).
Transport temperature: see page 9 (11 Technical
data).
Transport is subject to the ambient conditions
described.
Report any transport damage on the unit or packag-
ing without delay.
Check that the delivery is complete.
Storage
Storage temperature: see page 9 (11 Technical
data).
Storage is subject to the ambient conditions
described.
Storage time: 6months in the original packaging
before using for the first time. If stored for longer
than this, the overall service life will be reduced by
the corresponding amount of extra storage time.
15 DISPOSAL
Devices with electronic components:
WEEE Directive 2012/19/EU – Waste Electrical
and Electronic Equipment Directive
At the end of the product life (number of operat-
ing cycles reached), dispose of the packaging and
product in a corresponding recycling centre. Do not
dispose of the unit with the usual domestic refuse.
Do not burn the product.
On request, old units may be returned carriage paid
to the manufacturer in accordance with the relevant
waste legislation requirements.