Honeywell VRW2 User manual

PRODUCT DATA
62-3116-01
VRW2 Dynamic Pressure-
Regulating Flanged Control Valves
APPLICATION
The VRW2 two-way dynamic pressure-regulating control
valves maintain constant flow of hot and chilled water in
closed-loop heating, ventilating, and air conditioning (HVAC)
systems regardless of head pressure fluctuations above
minimum specified pressure drop. These valves come
complete with proportional, stay-in-place or electronic fail-safe
actuators.
The built-in differential pressure regulator makes fluid flow
through the valve independent of changes in supply pressure,
eliminating “hunting” by the control system, even at low coil
flow. The pressure regulator virtually eliminates cavitation in
the valve, and decouples the control valve from the effects of
piping components such as reducers and elbows.
Pressure independent control valves are sized to match
design coil flow regardless of coil size. VRW2 valves eliminate
the need to balance the system for proper flow, and allow
chillers to be operated at design temperature differential for
maximum efficiency at every load condition. When used in a
system with variable speed pump drives, 3-way valves and
coil bypass lines are not required.
Systems that utilize the capabilities of properly installed and
adjusted pressure-independent control valves may qualify for
LEED points.
FEATURES
• Multi-sized bodies from 2½ to 6 inch pipes with wafer-
flanged connections.
• Combination ANSI/ASME Class 150/300 pressure
rating.
• Controls hot or chilled water with up to 50% glycol.
• Regulated flow rates available from 39 to 469 gpm.
• Stainless steel pressure regulator maintains constant
pressure drop across valve seat.
• Positive pressure, rolling diaphragm regulator design
for long service life provides flow control accuracy of
±5%.
• Equal percentage flow characteristic using multi-turn,
non-rising, characterized plug.
• High close-off rating.
• 50 discrete, selectable flow rates available per valve
size.
• Stainless steel trim.
• Six-turn actuator with floating or modulating inputs
available with stay-in-place or electronic fail-safe
action.
• Fail-safe actuators field-configurable for normally
open or normally closed power failure return position.
• Two Test Ports for venting or pressure gauge
attachment.
Contents
Application ........................................................................ 1
Features ........................................................................... 1
Specifications ................................................................... 2
Ordering Information ........................................................ 2
Installation ........................................................................ 4
Operation and Checkout .................................................. 9
TYPICAL SPECIFICATIONS ............................................ 10

VRW2 DYNAMIC PRESSURE- REGULATING FLANGED CONTROL VALVES
62-3116—01 2
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).
2. Honeywell Customer Care
1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Toronto, Ontario M1V 4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
SPECIFICATIONS
Models: See Table 3.
Dimensions: See Fig. 1.
Body Style: Two-way, multi-turn, non-rising stem valve,
straight-through flow.
Pipe Size: 2-1/2 to 6 inches with multi-size, wafer flange pipe
fittings.
Test Ports: 1/4 in. ISO
Flow Capacity: See Table 1.
Body Pressure Rating (maximum): 580 psig (40 bar) at
248°F (120 C).
Controlled Medium: Water or Glycol solutions up to 50%.
Not suitable for combustible gases, oil or steam.
Fluid Temperature Range: -4 to +248°F (-20 to +120 C).
Minimum Differential Pressure: See Table 1.
Maximum Differential Pressure: 58 psid (400 kPa).
Close-off Pressure: 101 psid (700 kPa), maximum 0.2%
leakage.
Flow Characteristics: Equal Percentage.
Materials
Body: Ductile iron (ASTM A536-65T, Class 60-45-18).
Ball and Stem: Nickel-chrome plated brass, or stainless
steel.
Stem Seals: EPDM and Nitrile O-rings.
Ball Seals: Reinforced Teflon™ seals, with EPDM O-rings.
Regulator: EPDM rolling diaphragm in 316 stainless steel
housing.
Approvals Standards
Actuators: Safety Extra-Low Voltage, Class II wiring only.
aWafer-style flanges for each model fit between 2 pipe flange sizes, of either ANSI/ASME Class 150 or Class 300.
Table 1. VRW2 Flow Ratings.
VRW2... ...x... ...V... ...W...
SizeaFlow Differential Pressure Flow Differential Pressure
In. S.I. Code
Minimum
gpm (L/s)
Maximum
gpm (L/s)
Minimum
psid (kPa)
Maximum
psid (kPa)
Minimum
gpm (L/s)
Maximum
gpm (L/s)
Minimum
psid (kPa)
Maximum
psid (kPa)
2-1/2 & 3 DN65
DN80
J 39 (2.5) 112 (7.1) 5.1 (35) 58 (400) 56 (3.5) 155 (9.8) 11.6 (80) 58 (400)
3 & 4 DN80
DN100
K 55 (3.5) 147 (9.3) 73 (4.6) 222 (14.0) 8.6 (60)
5 & 6 DN125
DN150
L 103 (6.5) 370 (23.3) 118 (7.4) 469 (29.6)

VRW2 DYNAMIC PRESSURE- REGULATING FLANGED CONTROL VALVES
362-3116—01
Fig. 1. Dimensions in in. (mm).
aWafer-style flanges for each model fit between 2 pipe flange sizes, of either ANSI/ASME Class 150 or Class 300. Valve is
suspended from the rods joining the flanges attached to the pipes.
NOTE: This is a guide to the meaning of the product nomenclature, and is not intended to indicate all legal combinations of bod-
ies and actuators.
Table 2. Dimensions.
Model SizeaLH1H2Weight
In. S.I. in. (mm) in. (mm) in. (mm) lbs. (kg)
VRW2J… 2-1/2 & 3 DN65, DN80 8 3/4 (224) 9 3/4 (246) 3 3/4 (95) 27.8 (10.0)
VRW2K… 3 & 4 DN80, DN100 12 5/8 (320) 11 3/8 (290) 5 1/4 (135) 75.0 (30.0)
VRW2L… 5 & 6 DN125, DN150 16 5/8 (422) 13 1/4 (338) 7 1/8 (180) 148.0 (70.0)
Table 3. Model Selection.
Valve, Regulated Pipe fitting Body Pattern Valve Size Flow Rating Pressure Rating Valve Trim Actuator Secondary Spec Actuator Control Form
Description
VR Dynamic pressure regulated control valve
WCombination-size wafer flange
22-way
JValve size, 2-1/2 and 3 in. (DN65 and DN80)
KValve size, 3 and 4 in. (DN80 and DN100)
LValve size, 5 and 6 in. (DN125 and DN150)
VAdjustable, low minimum differential pressure
WAdjustable, high minimum differential pressure
4ANSI/ASME 150/300
SStainless steel trim, dual Test Ports
MMulti-turn valve
BModulating actuator
DModulating fail-safe actuator
VR W 2 K V 4 S M B =2-way, 3 & 4" wafer flanged dynamic pressure-regulated valve, SS
trim, 55~147 gpm, modulating electronic fail safe.
H1
M31295
H2
L

VRW2 DYNAMIC PRESSURE- REGULATING FLANGED CONTROL VALVES
62-3116—01 4
Application Notes
Accurate valve sizing and adjustment is crucial for efficient
system operation. Pressure regulated control valves optimize
hydronic HVAC systems at all load conditions as well as
balancing the system at design conditions.
Low flow rates maximize coil efficiency, but require pressure
regulated valves for stable operation.
High temperature change (ΔT) is needed to maintain thermal
transfer at low flow rates, and maximizes efficiencies in chillers
and condensing boilers.
In new construction, low flow rates at high ΔT reduce the size
requirements for pumps, chillers, boilers, and piping
components. In retrofit applications, lower flow rates reduce
pump energy consumption and peak power requirements.
Pressure regulated control valves work as effectively as
reverse return piping designs, but use less material.
If a system balancing report is required, coil flow must be
verified by measuring pressure drop across the coil, not the
control valve, using the coil manufacturer's specifications.
Bubble-tight close-off will require use of a resilient-seat
butterfly valve in series with the load.
Proper Use
These valves are only for use in cold, warm, and hot water
systems applications with ethylene glycol or propylene glycol
up to 50% concentration. They are designed for a medium
temperature range of from -4°F (-20°C) to 228°F (120°C) at a
maximum pressure of 580 psig (40 bar). VRW2 valves are to
be operated with supplied multi-turn actuators only.
IMPORTANT
Water should be properly filtered, treated and condi-
tioned according to local conditions and the recom-
mendations of the boiler or chiller manufacturers. The
installation of strainers and side-stream filters is
strongly recommended to protect the pressure regula-
tor cartridge
The presence of excessive iron oxide (red rust) in the
system voids the valve warranty. Rust is highly abra-
sive.
EPDM rubber used in this valve absorbs oil. Do not
use petroleum-based additives and thoroughly flush
system to remove petroleum-based cutting oil, solder
flux, etc. Do not use solvents that will dissolve silicon
grease
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to follow them
could damage the product or cause a hazardous condi-
tion.
2. Check ratings given in instructions and on the product to
ensure the product is suitable for your application.
3. Installer must be a trained, experienced, licensed service
technician.
4. After installation is complete, check out product opera-
tion as provided in these instructions
Preparation
CAUTION
Equipment Damage Hazard
• Foreign particles like sand and metal chips can
damage valve seals and regulator diaphragm.
• For trouble-free operation of the product, good
installation practice must include initial system
flushing, and chemical water treatment.
• Use of a 50 micron (or finer) system side stream
filter is recommended and in-line Y-strainers are
suggested. Remove all sieves before flushing the
system to avoid trapping dirt in the filters.
• Acceptable antifreeze solutions, with minimum 50%
water dilution, are diethylene glycol, ethylene glycol,
and propylene glycol.
• Do not use boiler additives, solder flux and wetted
materials which are petroleum based or contain
mineral oil, hydrocarbons, or ethylene glycol
acetate. If in doubt, consult an HVAC water
treatment specialist.
• If installing these valves in a new addition, or if
retrofitting an existing building, do not assume that
the fluid in the existing piping meets these criteria.
1. Clean the lines upstream of particles larger than 1/16 in.
diameter (welding slag, pipe scale and other contami-
nants).
2. Proceed with installation once the system specifics
(expansion/contraction of the system and its medium as
well as operating pressures) are within tolerances.
3. Eliminate air from system. Free oxygen will corrode iron
parts.
IMPORTANT
• Ensure that the valve is not in the fully closed position
when filling the system with water. TURN OFF
POWER and open manually if necessary.
• Do not exceed maximum pressure differential control
range for valve.
• Install valve indoors. If valve is installed outdoors,
water tight protection is required for the actuator.
• If the valve is to be installed in vertical pipe on a
chilled water system, ensure that the covered elec-
tronics are upwards above the valve spindle, to pre-
vent condensation from entering the electronics. If
necessary use a socket and ratchet to remove the
brass nut attaching the mounting bracket to the valve
body, re-position the Actuator and replace the brass
nut.
• Even torque on all flange bolts and connecting rods is
critical to pipe seals.
• Flow arrows must point in the direction of the flow for
proper operation.
4. Stem rotation as viewed from above:
a. Clockwise to close.
b. Counterclockwise to open
5. Valve must be mounted with the actuator/bracket above
pipe center line. Do not install the valve with the stem
below horizontal or upside down without NEMA 3, 4, or
4X actuator enclosure to prevent actuator damage due
to condensation or leaks. See Fig. 2 and 3.

VRW2 DYNAMIC PRESSURE- REGULATING FLANGED CONTROL VALVES
562-3116—01
Fig. 2. Vertical pipe installation.
Fig. 3. Acceptable valve angle from vertical.
ACTUATOR WIRING AND PROGRAMMING
Shielded cable is recommended when using 0-10 Vdc
modulating control signals for signal protection from RFI/EMI.
Ground shield at one point only, preferably where signal is
weakest. Do not ground transformer secondary, and isolate
burner ignition systems, which are grounded.
1. Remove the Actuator Cover from the motor by loosening
screw. Safeguard the screw. See Fig. 4.
Fig. 4. Actuator circuit board layout.
2. Set the Maximum Flow Dip Switches so that the actuator
limits the valve position to the maximum flow rate
required. (Select the actuator dipswitch setting from
Table 4.) If adjusting the Dip Switch settings after power
has been connected, press the Reset Button to input the
new setting.
ORIENTATION OF
ACTUATOR ABOVE
THE VALVE SPINDLE
CORRECT
M31296
DN 65/80
INCORRECT
DN 65/80
85 85
M29519
A
M31286
1
ON
23456
1
ON
23
PROGRAMMING DIP SWITCHES
RESET & CALIBRATION BUTTON
MAXIMUM FLOW DIP SWITCHES
MANUAL OVERIDE CLUTCH
(DO NOT OPERATE WHILE
POWER IS CONNECTED)
ACTUATOR CIRCUIT BOARD LAYOUT
WIRING TERMINAL STRIP
VALVE POSITION IN ROTATIONS
PROGRAMMING & INDICATION LED
LED OFF: ACTUAL VALVE
ROTATIONS ARE BEING DISPLAYED
LED ON: MAXIMUM ROTATION
SETTING IS DISPLAYED
(ALTERNATES EVERY 10 SECONDS)
1 2 3 4 5
88

VRW2 DYNAMIC PRESSURE- REGULATING FLANGED CONTROL VALVES
62-3116—01 6
Table 4. Maximum Flow Rate Settings.
Dip Switch Settings
Stem
Rotations
From
Closed
VRW2JV...
2-1/2 & 3"
(DN65/80)
5.1~58 psid
(35~400 kPa)
VRW2JW...
2-1/2 & 3"
(DN65/80)
11.6~58 psid
(80~400 kPa)
VRW2KV...
3 & 4"
(DN80/100)
5.1~58 psid
(35~400 kPa)
VRW2KW...
3 & 4"
(DN80/100)
8.6~58 psid
(59~400 kPa)
VRW2LV...
5 & 6"
(DN125/150)
5.1~58 psid
(35~400 kPa)
VRW2LW...
5 & 6"
(DN125/150)
8.6~58 psid
(59~400 kPa)
#1 #2 #3 #4 #5 #6 gpm (L/s) gpm (L/s) gpm (L/s) gpm (L/s) gpm (L/s) gpm (L/s)
ON ON ON ON ON ON 1.0 39.0 (2.5) 55.5 (3.5) 54.7 (3.5) 73.4 (4.6) 103 (6.50) 118 (7.4)
OFF ON ON ON ON ON 1.1 43.2 (2.7) 60.1 (3.8) 60.5 (3.8) 82.0 (5.2) 115 (7.26) 131 (8.3)
ON OFF ON ON ON ON 1.2 47.4 (3.0) 64.7 (4.1) 66.3 (4.2) 90.6 (5.7) 126 (7.95) 143 (9.0)
OFF OFF ON ON ON ON 1.3 51.6 (3.3) 69.4 (4.4) 72.1 (4.5) 99.1 (6.3) 137 (8.64) 156 (9.8)
ON ON OFF ON ON ON 1.4 55.9 (3.5) 74.0 (4.7) 77.9 (4.9) 108 (6.8) 148 (9.34) 168 (10.6)
OFF ON OFF ON ON ON 1.5 60.1 (3.8) 78.6 (5.0) 83.7 (5.3) 116 (7.3) 160 (10.09) 181 (11.4)
ON OFF OFF ON ON ON 1.6 62.7 (4.0) 82.3 (5.2) 88.4 (5.6) 123 (7.8) 170 (10.73) 193 (12.2)
OFF OFF OFF ON ON ON 1.7 65.3 (4.1) 86.0 (5.4) 93.1 (5.9) 130 (8.2) 180 (11.36) 205 (12.9)
ON ON ON OFF ON ON 1.8 67.9 (4.3) 89.6 (5.7) 97.7 (6.2) 137 (8.6) 190 (11.99) 218 (13.8)
OFF ON ON OFF ON ON 1.9 70.5 (4.4) 93.3 (5.9) 102.0 (6.4) 143 (9.0) 200 (12.62) 230 (14.5)
ON OFF ON OFF ON ON 2.0 73.1 (4.6) 97.0 (6.1) 107.0 (6.8) 150 (9.5) 210 (13.25) 242 (15.3)
OFF OFF ON OFF ON ON 2.1 74.8 (4.7) 99.3 (6.3) 110.0 (6.9) 155 (9.8) 218 (13.75) 252 (15.9)
ON ON OFF OFF ON ON 2.2 76.6 (4.8) 102 (6.4) 113 (7.1) 159 (10.0) 227 (14.32) 262 (16.5)
OFF ON OFF OFF ON ON 2.3 78.4 (4.9) 104 (6.6) 115 (7.3) 164 (10.3) 235 (14.83) 271 (17.1)
ON OFF OFF OFF ON ON 2.4 80.2 (5.1) 106 (6.7) 118 (7.4) 168 (10.6) 243 (15.33) 281 (17.7)
OFF OFF OFF OFF ON ON 2.5 81.9 (5.2) 108 (6.8) 121 (7.6) 173 (10.9) 251 (15.84) 291 (18.4)
ON ON ON ON OFF ON 2.6 83.4 (5.3) 111 (7.0) 123 (7.8) 176 (11.1) 257 (16.21) 301 (19.0)
OFF ON ON ON OFF ON 2.7 84.8 (5.4) 113 (7.1) 125 (7.9) 179 (11.3) 263 (16.59) 310 (19.6)
ON OFF ON ON OFF ON 2.8 86.2 (5.4) 115 (7.3) 126 (8.0) 181 (11.4) 269 (16.97) 320 (20.2)
OFF OFF ON ON OFF ON 2.9 87.7 (5.5) 117 (7.4) 128 (8.1) 184 (11.6) 276 (17.41) 329 (20.8)
ON ON OFF ON OFF ON 3.0 89.1 (5.6) 119 (7.5) 130 (8.2) 187 (11.8) 282 (17.79) 339 (21.4)
OFF ON OFF ON OFF ON 3.1 90.0 (5.7) 121 (7.6) 131 (8.3) 189 (11.9) 287 (18.11) 344 (21.7)
ON OFF OFF ON OFF ON 3.2 90.9 (5.7) 122 (7.7) 132 (8.3) 191 (12.1) 293 (18.49) 350 (22.1)
OFF OFF OFF ON OFF ON 3.3 91.7 (5.8) 124 (7.8) 134 (8.5) 193 (12.2) 298 (18.80) 355 (22.4)
ON ON ON OFF OFF ON 3.4 92.6 (5.8) 125 (7.9) 135 (8.5) 195 (12.3) 304 (19.18) 360 (22.7)
OFF ON ON OFF OFF ON 3.5 93.5 (5.9) 127 (8.0) 136 (8.6) 198 (12.5) 309 (19.49) 366 (23.1)
ON OFF ON OFF OFF ON 3.6 94.4 (6.0) 128 (8.1) 137 (8.6) 200 (12.6) 315 (19.87) 371 (23.4)
OFF OFF ON OFF OFF ON 3.7 95.3 (6.0) 129 (8.1) 138 (8.7) 202 (12.7) 320 (20.19) 376 (23.7)
ON ON OFF OFF OFF ON 3.8 96.2 (6.1) 131 (8.3) 140 (8.8) 204 (12.9) 326 (20.57) 381 (24.0)
OFF ON OFF OFF OFF ON 3.9 97.1 (6.1) 132 (8.3) 141 (8.9) 206 (13.0) 331 (20.88) 387 (24.4)
ON OFF OFF OFF OFF ON 4.0 98.0 (6.2) 134 (8.5) 142 (9.0) 208 (13.1) 337 (21.26) 392 (24.7)
OFF OFF OFF OFF OFF ON 4.1 98.7 (6.2) 135 (8.5) 142 (9.0) 209 (13.2) 339 (21.39) 396 (25.0)
ON ON ON ON ON OFF 4.2 99.3 (6.3) 136 (8.6) 143 (9.0) 210 (13.2) 342 (21.58) 401 (25.3)
OFF ON ON ON ON OFF 4.3 100 (6.3) 137 (8.6) 143 (9.0) 212 (13.4) 344 (21.70) 405 (25.6)
ON OFF ON ON ON OFF 4.4 101 (6.4) 138 (8.7) 144 (9.1) 213 (13.4) 346 (21.83) 409 (25.8)
OFF OFF ON ON ON OFF 4.5 101 (6.4) 139 (8.8) 144 (9.1) 214 (13.5) 349 (22.02) 414 (26.1)
ON ON OFF ON ON OFF 4.6 102 (6.4) 141 (8.9) 144 (9.1) 215 (13.6) 351 (22.14) 418 (26.4)
OFF ON OFF ON ON OFF 4.7 103 (6.5) 142 (9.0) 145 (9.1) 216 (13.6) 353 (22.27) 422 (26.6)
ON OFF OFF ON ON OFF 4.8 104 (6.6) 143 (9.0) 145 (9.1) 218 (13.8) 355 (22.40) 426 (26.9)
OFF OFF OFF ON ON OFF 4.9 104 (6.6) 144 (9.1) 146 (9.2) 219 (13.8) 358 (22.59) 431 (27.2)
ON ON ON OFF ON OFF 5.0 105 (6.6) 145 (9.1) 146 (9.2) 220 (13.9) 360 (22.71) 435 (27.4)
OFF ON ON OFF ON OFF 5.1 106 (6.7) 146 (9.2) 146 (9.2) 220 (13.9) 361 (22.78) 438 (27.6)

VRW2 DYNAMIC PRESSURE- REGULATING FLANGED CONTROL VALVES
762-3116—01
3. Wire the Terminal Strip according to the appropriate dia-
gram for your actuator. See Fig. 5.
4. 500 ohm resistors are supplied for 4-20mA to 2-10 Vdc
conversions. Two 2.2Kohm resistors are supplied for dig-
ital/3-Point Floating control. In this mode the actuator is
sensitive to induced electrical voltages from other
sources. To prevent such interference, wire the
2.2Kohm, 0.5W resistor between pins 4 and 1 and a sec-
ond 2.2Kohm, 0.5W resistor between pins 3 and 1.
Fig. 5. Wiring connections.
5. The actuator is preset for an analog input signal, normally closed
operation. If this is suitable for the application simply connect the
wiring per diagram. Once the power has been connected the
actuator will run a calibration program and then begin normal
operation. If the signal requirement must be changed, proceed to
instruction 6.
6. Remove power and set all Programming Dip Switches to OFF by
sliding DIP switch toggles away from edge of circuit board (in
direction of arrows in Fig. 6–9).
7. Apply power and within 10 seconds, press and release the Reset
Button. The programming and indication LED should start blink-
ing.
8. Turn Programming Dip Switch #1, #2, or #3 ON then OFF to
select signal requirement.
Fig. 6. Set control input type.
ON OFF ON OFF ON OFF 5.2 106 (6.7) 147 (9.3) 146 (9.2) 220 (13.9) 362 (22.84) 442 (27.9)
OFF OFF ON OFF ON OFF 5.3 107 (6.8) 148 (9.3) 146 (9.2) 221 (13.9) 363 (22.90) 445 (28.1)
ON ON OFF OFF ON OFF 5.4 108 (6.8) 149 (9.4) 146 (9.2) 221 (13.9) 364 (22.96) 448 (28.3)
OFF ON OFF OFF ON OFF 5.5 108 (6.8) 150 (9.5) 147 (9.3) 221 (13.9) 365 (23.03) 452 (28.5)
ON OFF OFF OFF ON OFF 5.6 109 (6.9) 151 (9.5) 147 (9.3) 221 (13.9) 366 (23.09) 455 (28.7)
OFF OFF OFF OFF ON OFF 5.7 110 (6.9) 153 (9.7) 147 (9.3) 221 (13.9) 367 (23.15) 458 (28.9)
ON ON ON ON OFF OFF 5.8 111 (7.0) 154 (9.7) 147 (9.3) 222 (14.0) 368 (23.22) 461 (29.1)
OFF ON ON ON OFF OFF 5.9 111 (7.0) 155 (9.8) 147 (9.3) 222 (14.0) 369 (23.28) 465 (29.3)
ON OFF ON ON OFF OFF 6.0 112 (7.1) 156 (9.8) 147 (9.3) 222 (14.0) 370 (23.34) 468 (29.5)
Table 4. Maximum Flow Rate Settings. (Continued)
Dip Switch Settings
Stem
Rotations
From
Closed
VRW2JV...
2-1/2 & 3"
(DN65/80)
5.1~58 psid
(35~400 kPa)
VRW2JW...
2-1/2 & 3"
(DN65/80)
11.6~58 psid
(80~400 kPa)
VRW2KV...
3 & 4"
(DN80/100)
5.1~58 psid
(35~400 kPa)
VRW2KW...
3 & 4"
(DN80/100)
8.6~58 psid
(59~400 kPa)
VRW2LV...
5 & 6"
(DN125/150)
5.1~58 psid
(35~400 kPa)
VRW2LW...
5 & 6"
(DN125/150)
8.6~58 psid
(59~400 kPa)
#1 #2 #3 #4 #5 #6 gpm (L/s) gpm (L/s) gpm (L/s) gpm (L/s) gpm (L/s) gpm (L/s)
2-10VDC
ANALOG 2-10VDC
FEEDBACK
CONTROL SIGNAL
24V AC/DC
AC/DC-NEUTRAL/COMMON
500 OHM
5
4
3
2
1
4-20 mA
ANALOG 4-20 mA
FEEDBACK
CONTROL SIGNAL
24V AC/DC
AC/DC-NEUTRAL/COMMON
500 OHM
3
4
5
2
1
4-20 mA
PWM
FEEDBACK
CONTROL SIGNAL
24V AC/DC
AC/DC-NEUTRAL/COMMON
3
4
5
2
1
M31287
4-20 mA
3-POINT FLOATING
FEEDBACK
SIGNAL CW CLOSE
24V AC/DC
AC/DC-NEUTRAL/COMMON
3
4
5
2
1
SIGNAL CCW OPEN
1
ALL OFF
LED
#1 ON
SWITCH #1: DIGITAL/3-POINT FLOATING
#1 OFF
M31288
2 3
1 2 31 2 3
#3 ON
SWITCH #3: ANALOG 2-10VDC OR 4-20mA
#3 OFF
1 2 31 2 3
#2 ON
SWITCH #2: PWM (PULSE WIDTH MODULATION)
#2 OFF
1 2 31 2 3

VRW2 DYNAMIC PRESSURE- REGULATING FLANGED CONTROL VALVES
62-3116—01 8
Programming Normally Open or Normally Closed Setting
The Actuator is delivered from the factory set to the “normally
closed” function for an analog control signal so that a minimum
signal of 2V or 4mA will close the valve and a maximum signal of
10V or 20mA will open the valve to maximum flow.
Fig. 7. Actuator programming.
Programming Failsafe Open or Failsafe Closed Setting
This function applies to battery backup, failsafe models only that
provide power storage to drive the actuator either open to the
Maximum Flow Setting or fully closed in the event of a power supply
failure.
Fig. 8. Failsafe programming.
Programming PWM Time Base Resolution Setting
This function applies only if the Actuator has been programmed to
accept Pulse Width Modulation (PWM) signal.
Fig. 9. PWM time base programming.
Programming Actuator Zero and Span Adjustment
1. Remove power.
2. Re-apply power to terminal 2 and within 10 seconds, press and
hold the Reset Button until the indication LED blinks once.
3. Release the Reset Button. The indication LED should remain illu-
minated.
4. Apply the new zero voltage to terminal 3. (Any value between 0-7
Vdc)
5. Press and release the Reset Button to memorize this value. The
LED should blink once as confirmation.
6. Apply the new maximum voltage to terminal 3. (Any voltage
between 3-10 Vdc and at least 3 Vdc greater than the zero value.)
7. Press and release the Reset Button to memorize this value. The
indication LED should blink once as confirmation and then cease
to be illuminated. The Actuator will now operate with the new zero
and span.
8. If the LED provides 3 sequences of 4 blinks the zero and span
program was unsuccessful. This may occur if the difference
between zero and maximum voltage were not equal or greater
than 3 Vdc.
Fig. 10. Actuator programming and LED blink pattern.
#1 ON
FOR NORMALLY CLOSED, SET PROGRAMMING #1 TO OFF
#1 OFF
M31289
1 2 3
1 2 3
FOR NORMALLY OPEN, SET PROGRAMMING #1 TO ON
FOR FAILSAFE CLOSED, SET PROGRAMMING #2 TO OFF
M31290
FOR FAILSAFE OPEN, SET PROGRAMMING #2 TO ON
#2 ON
#2 OFF
1 2 3
1 2 3
FOR 0.1 TO 25 SECONDS/100mS RESOLUTION,
SET PROGRAMMING #3 TO OFF
M31291
FOR 0.1 TO 5 SECOND/20mS RESOLUTION,
SET PROGRAMMING #3 TO ON
#3 ON
#3 OFF
1 2 3
1 2 3
LED
M31292
LED
LED
LED

VRW2 DYNAMIC PRESSURE- REGULATING FLANGED CONTROL VALVES
962-3116—01
OPERATION AND CHECKOUT
Once both the mechanical and electrical installations are
complete:
1. Cycle the actuator to verify that the direction of rotation
suits the control sequence.
2. If the rotation direction is incorrect:
a. For floating control actuators: Reverse two control
signal wires (CW/CCW), or change position of selec-
tor switches.
b. For analog control actuators, change position of
selector switches.
3. If the control scheme requires fail-safe operation, ensure
that, upon removal of power, the fail position coincides
with the control sequence.
Manual Override
1. Remove Actuator cover and DISCONNECT POWER
before operating actuator manually.
NOTE: Failure to disconnect power may cause dam-
age to the actuator gears.
2. Press the clutch.
3. Rotate valve stem to manually operate valve. Clockwise
to close, Counter-Clockwise to open. See Fig. 11.
Fig. 11. Manual Operation.
MAINTENANCE
1. Continual blinking indicates that the Actuator torque out-
put limit has been exceeded. This may have been
caused by debris in the valve internals. Disconnect
power and manually operate the valve to clear the
debris. Reconnect power. The Actuator will automatically
recalibrate and reset. If the problem reoccurs, inspect
the valve body internally for debris.
2. If the system experiences large amounts of pipe scale
due to poor water conditions, as sometimes found in
older or retrofit pipe systems, provisions should be made
to keep the system clean. Proper water treatment is also
recommended by the use of a Separator.
3. If a separator is not used for system cleaning and filtra-
tion, the valves should be checked annually.
Operation
The differential pressure regulator maintains constant pressure
drop (PIN - POUT) across the valve seat through a wide range
of head pressures. At a given shaft position, flow through the
valve will constant as defined by the formula:
where ρis the density of the glycol mix.
PIN changes constantly in a multi-zone system as other valves
open and close, changing system flow and head pressure
according to the characteristics of the supply pump curve.
Reaction of the mechanical pressure regulator is
instantaneous, eliminating changes in room temperature due
to changes in fluid flow, and reducing the need for the control
system to constantly operate the control portion of the valve to
correct for the non-load related temperature changes that
occur in a system with standard control valves.
At full flow in a 2-position control application, a VRW2 behaves
as a flow limiter.
The pressure regulator takes a minimum pressure to operate,
and has a maximum differential regulation capability. The
pressure drop across a VRW Valve is comparable to the
pressure drop across a control valve plus a balancing valve in
a conventional system design.
SETTINGS AND ADJUSTMENTS
At the full open position, VRW valves will maintain flow at the
gallons per minute rate determined by the DIP Switch settings
shown in Table 4. Under steady state operation, the control
system will only require the valve to open enough to satisfy
load conditions. During morning recovery from night setback,
the controller will usually command the valve to 100%.
Coil flow can be confirmed by reading pressures at the supply
inlet and return outlet, and using the system design data to
calculate flow.
Note that the pressure regulator in this valve guarantees that
the flow through the valve will not be affected by upstream
changes in pressure. Unlike conventional balancing valves, it
is not necessary to reconfirm flow after adjusting other valves.
Any overflow during morning recovery due to oversized
pressure regulated valves will not affect other valves in the
system, provided pumps are capable of required flow.
M31293
CLOSE
OPEN
CLUTCH PUSH BUTTON
1
ON
23456
1
ON
23
1 2 3 4 5
88

VRW2 DYNAMIC PRESSURE- REGULATING FLANGED CONTROL VALVES
62-3116—01 10
TYPICAL SPECIFICATIONS
23 00 00 HEATING, VENTILATING, AND AIR-CONDITIONING
(HVAC)
23 09 00 Instrumentation and Control for HVAC
23 09 13 Instrumentation and Control Devices for HVAC
23 09 13.33 Control Valves
Multi-Turn, Dynamic Pressure-Regulating Wafer-Flanged
Control Valve
Mounting and Wiring
1. Valves shall be available with wafer-flanges for use with
either ANSI/ASME 125/150 or ANSI/ASME 250/300 pipe
flanges in sizes from 2-1/2 up to 6 inches (DN65 to
DN150). Each wafer flange shall be usable with either of
two successive pipe sizes.
2. The valve shall have an integral differential pressure reg-
ulator to maintain constant pressure drop across valve
seat to decouple valve flow from system pressure
changes. Regulator will be constructed from 316 stain-
less steel with a rolling diaphragm and operate under
positive pressure. Regulator shall be located above axis
of pipe with 1/4-in. ISO test port fittings to allow pressure
measurement and venting. Control accuracy shall be +/-
5% or better.
3. Valves shall use a non-rising stem, characterized plug
with equal percentage flow control characteristic. Valve
trim shall be stainless steel.
4. Valve bodies shall have static pressure rating of 580 psig
(4000 kPa) at 248°F (120 C).
5. Maximum operating differential pressure rating shall be
no less than 58 psid. Close-off pressure shall be 100
psid minimum, at no more than 0.2% leakage.
6. Valve stem seals shall be a combination of EPDM and
Nitrile O-rings.
7. Actuators shall be six turn rotary type requiring neither
crank-arm nor linkage and direct mount to the valve
actuator bracket.
8. Actuators shall provide screw terminal wiring connec-
tions with adapters for flexible conduit where mechanical
protection is required by local codes.
9. Valve actuator shall be capable of operating on 24 Vac
Class II power, in both electronic fail-safe and stay-in-
place configurations. Actuator fail-safe action in the
event of power failure shall be field-selectable normally
open or normally closed.
Control
1. The actuator shall provide two-position, floating, analog
or digital proportional control. Analog proportional control
refers to direct acceptance of 2-10 Vdc or a 4-20 mA
input signal. Digital proportional control refers to direct
acceptance of 24 Vac pulse-width-modulated input sig-
nal. Floating control refers to direct acceptance of 24 Vac
pulsed open and close commands from a tri-state
(SP3T) controller. Two-position control of non-fail safe
actuators shall be in the form of 24 Vac power controlled
by SPDT switch.Two-position control of fail safe actua-
tors shall be in the form of 24 Vac power controlled by
SPST switch.
2. Flow valve shall have minimum 50:1 rangeability with an
equal percentage flow characteristic. Actuator shall have
field-adjustable signal zero and span adjustments.
3. Flow settings shall be field-selectable from 50 unique
settings.
4. Proportional and floating control actuators shall provide
a 2-10 Vdc/4-20 mA feedback signal.
5. Actuators shall provide analog proportional, PWM, float-
ing, or two-position control through wiring options.
6. Actuation will be available with electronic fail-safe opera-
tion.
Other
1. Valves may not be installed with stems below the hori-
zontal plane to prevent actuator damage due to stem
seal leakage, or accumulation of particulate in the stem
packing.
2. A water filtration and treatment system shall be installed
and operated according to the requirements of Division
23 25 13, Water Treatment for Closed-Loop Hydronic
Systems. These requirements shall meet or exceed
European Norm VDI 2035. The presence of excess rust
in the system will void the manufacturer's warranty.
3. Run time shall be constant and independent of: load,
temperature, and supply voltage (within specifications).
4. All valves and actuators shall be manufactured under
ISO 9001 International Quality Control Standards.
5. Actuators shall have a one year warranty from date of
installation.
6. Accessories Identification tags shall be available for all
valves; tags shall be indelibly marked with gpm, model
number, and tag location.
7. Valves and actuators shall be as supplied by Honeywell.
Balancing Valves (Mechanical
section)
Balancing valve installation and commissioning shall not be
required when dynamic pressure-regulating control valves are
used throughout a building. The balancing report, as required,
shall confirm design coil flow by direct measurement across (a
representative sample of/all) coils in the building.

VRW2 DYNAMIC PRESSURE- REGULATING FLANGED CONTROL VALVES
11 62-3116—01

VRW2 DYNAMIC PRESSURE- REGULATING FLANGED CONTROL VALVES
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Toronto, Ontario M1V 4Z9
customer.honeywell.com
® U.S. Registered Trademark
© 2010 Honeywell International Inc.
62-3116—01 M.S. 02-10
Printed in U.S.A.