Table of Contents
VPI PRESSURE INDEPENDENT
CONTROL VALVES AND ACTUATORS
APPLICATION
Honeywell pressure independent control valve (PICV) is
used in heating and cooling systems in applications
with Air Handling Units, Fan Coil Units, chilled ceilings,
zone control, or other terminal unit applications.
Honeywell VPI series provides modulating control with
full authority regardless of any fluctuations in the
differential pressure of the system. Honeywell VPI
series combines an externally adjustable automatic
balancing valve, a differential pressure control valve,
and a full authority modulating control valve.
Honeywell VPI series makes it simple to achieve 100%
control of the water flow in the building while creating
high comfort and energy savings at the same time. An
additional benefit is that no balancing is required if
further stages are added to the system, or if the
dimensioned capacity is changed. Energy-saving due
to optimal control, lower flow, and pump pressure.
Maximized ΔT due to faster response and increased
system stability
Application Notes
Valve sizing is important for correct system operation.
Undersized valves do not have sufficient capacity at
maximum load.
® U.S. Registered Trademark.
Copyright © 2020 Honeywell Inc. All Rights Reserved.
Proper Use
These valves are intended for use in chilled water and
hot water closed-loop applications only, with a media
temperature range of -20ºC to +120ºC (-4ºF to
+248ºF), and static pressures up to 580psi. Not
suitable
for
temperature steam.
These valves are to be operated with the appropriate
and compatible Honeywell actuators only. Refer VPI
series PICV Product Datasheets for more details on
valve and actuators compatibility.
Water should be properly filtered, treated, and
conditioned for good operating performance, and
according to according to VDI 2035 with up to 50 %
Glycol (oxygen concentration less than 0.2 g/m3, pH
8...9.5; Fe<0.5 mg/kg; Cu<0.1 mg/kg). The installation
of strainers and filters is recommended. Do not use
manual balancing valves.
IMPORTANT: The presence of excessive iron oxide
(red rust) in the system voids the valve warranty.
Effective Flow Rate
The built-in differential pressure regulator makes fluid
flow through the valve independent of changes in
supply. 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 connection size.
These valves eliminate the need to balance the system
for proper flow and allow chillers to be operated at
design
temperature
efficiency at every load condition.
Flow Characteristic
The VPI series Pressure Independent Control Valves
have: Linear flow characteristic and can be converted
to an equal percentage in the actuator.
Printed in USA
INSTALLATION INSTRUCTION
oil,
combustible
gases,
differential
31-00383-01, Rev A.
or
high-
for
maximum
Table of Contents
Related Manuals for Honeywell VPI Series
Summary of Contents for Honeywell VPI Series
- Page 1 Honeywell VPI series makes it simple to achieve 100% supply. The pressure regulator virtually eliminates control of the water flow in the building while creating cavitation in the valve and decouples the control valve high comfort and energy savings at the same time.
- Page 2 <100 μS/cm, oxygen content of up to 0.1 mg/l, pH of 8.2-10.0 and requires low turbidity <1FTU and consequently low content of alkaline earths. 4. It is recommended to treat water with chemical to achieve required water quality. If using any additives, please contact Honeywell for guidance. 31-00383-01...
- Page 3 The Flow regulator is provisioned with dial with scale result. settings to allow user to set desired flow rate. For more Refer VPI series PICV Product Datasheets for more information about flow rate as per dial settings, see details on valve and actuator dimensions.
- Page 4 VPI Pressure Independent Control Valves & Actuators Flow Setting Chart for DN 15 -32 Table 1. Flow Chart for DN15-32 DN15LF-DN20LF DN15HF-DN25HF DN32 Setting l/sec l/hr l/sec l/hr l/sec l/hr 0.0178 0.282 0.240 3.81 0.0393 0.624 0.282 1010 4.46 0.0580 0.920 0.322 1160...
- Page 5 VPI PRESSURE INDEPENDENT CONTROL VALVES & ACTUATORS Replacement of Flow regulator The Flow regulator are engineered and designed with more life span. Follow below procedures in case if the old flow regulator needs replacement with the new one. Procedure to remove the Flow Regulator The procedure to remove Flow Regulator is as follows: 1.
- Page 6 Pressure ports (C) facilitates user to gauge pressure across ends. The Plugs (D) comes with valve models without pressure ports. See VPI series PICV Product Datasheets for more details on models with and without pressure ports.
- Page 7 VPI PRESSURE INDEPENDENT CONTROL VALVES & ACTUATORS Flow Setting for DN40-50 The Flow regulator is provisioned with dial with scale settings to allow user to set desired flow rate. For more information about flow rate as per dial settings, see Table 2. Flow Settings Chart for DN40-50. The procedure for scale setting is as follows: 1.
- Page 8 VPI Pressure Independent Control Valves & Actuators Flow Setting Chart for DN40 – DN50 Table 2. Flow Settings Chart for DN40-50 DN40-DN50 Setting l/sec l/hr 0.528 1900 8.36 0.633 2278 10.0 0.738 2655 11.7 0.843 3033 13.3 0.947 3410 15.0 1.05 3787 16.7...
- Page 9 Honeywell. See VPI series PICV Product Datasheets for more details on the flange selection of DN50-250 valves. 8. O-rings are supplied with the valve body and are used to seal connections. It is recommended to grease O-rings with silicone grease.
- Page 10 VPI Pressure Independent Control Valves & Actuators Flow Setting Chart for DN50-100 Table 3. Flow Setting Chart for DN50-100 DN50 DN65 DN80LF DN80HF DN100LF DN100HF l/sec l/hr GPM l/sec l/hr GPM l/sec l/hr GPM l/sec l/hr GPM l/sec l/hr GPM l/sec l/hr GPM 2.57 9240 40.7...
- Page 11 VPI PRESSURE INDEPENDENT CONTROL VALVES & ACTUATORS DN50 DN65 DN80LF DN80HF DN100LF DN100HF l/sec l/hr GPM l/sec l/hr GPM l/sec l/hr GPM l/sec l/hr GPM l/sec l/hr GPM l/sec l/hr GPM 6.82 24600 108 6.82 24600 108 9.46 34100 150 13.9 50100 220 13.9 50100 220 20.0 71900 316...
- Page 12 VPI Pressure Independent Control Valves & Actuators Control Curve of Flow Figure 11. Control curve of flow from MR series actuators 31-00383-01...
- Page 13 VPI PRESSURE INDEPENDENT CONTROL VALVES & ACTUATORS Installation of Actuators compatible with DN 15-50 IMPORTANT: Do not connect power to the actuator unless the actuator is already fitted on the valve and NEVER install the actuator in a closed position this may damage the valve. IMPORTANT: The actuator is supplied in an open position to ensure the easy commissioning of the system.
- Page 14 VPI Pressure Independent Control Valves & Actuators Installation of Thermoelectric Actuators (MLP41TNA and MLP71TNA) IMPORTANT: Do not connect power to the actuator unless the actuator is already fitted on the valve and NEVER install the actuator in a closed position this may damage the valve. IMPORTANT: The actuator is supplied in an open position to ensure the easy commissioning of the system.
- Page 15 VPI PRESSURE INDEPENDENT CONTROL VALVES & ACTUATORS Installation of Actuators compatible with DN50 – 250 Procedure to install the Actuator Mounting Position The procedure to install the valve is as follows: The actuators can be mounted in any position (IP54 is dependent upon orientation;...
- Page 16 VPI Pressure Independent Control Valves & Actuators ELECTRICAL INSTALLATIONS Electrical Wiring for Actuators Compatible to DN15-50 The most important part of the electrical installation is the appropriate wiring set-up as per application. Below are examples of electrical wiring provided as per the actuator model. MLP71MAA Actuators MLP41MNA Actuators 31-00383-01...
- Page 17 VPI PRESSURE INDEPENDENT CONTROL VALVES & ACTUATORS MLE-71MAA Actuators Start Up Sequence When power to the actuator is turned On, the actuator will automatically calibrate to determine the closing point. Hereafter it will proceed to the normal operation mode (according to control signal). For the failsafe version, capacitor charging will be prioritized (max.
- Page 18 VPI Pressure Independent Control Valves & Actuators MLP75MAB and MLE75MAB Actuators Configuration and Setup Start Up Sequence When power to the actuator is turned on, the actuator will automatically calibrate to determine closing point. Hereafter it will proceed to normal operation mode (according to control signal). For the failsafe version, capacitor charging will be prioritized (max.
- Page 19 VPI PRESSURE INDEPENDENT CONTROL VALVES & ACTUATORS Electrical Override (MLE75MAB) By moving DIP switch #6 from OFF to ON, electrical override is activated, and the actuator will open valve fully. During electrical override the LED indicator will blink red and green. When DIP switch #6 is moved back to OFF, the actuator will re-calibrate and thereafter go into normal operation mode.
- Page 20 VPI Pressure Independent Control Valves & Actuators DIP Switch Settings The valve functions are set on DIP switches found under the connection cover. PCB mounted electrical components will not be directly exposed when DIP switches are to be set. The factory setting for all switches is OFF. The DIP switches are available only in MLP71MAA, MLE71MAA, MLP75MAB, and MLE75MAB.
- Page 21 VPI PRESSURE INDEPENDENT CONTROL VALVES & ACTUATORS Electrical Wiring for Actuators Compatible to DN50-250 MRP75MAC / MRE75MAC Table 5. List of Reference Valve Codes Honeywell Part codes Reference Valve Codes* VPI050FPH4 VPI065FPH4 VPI080FPL4 VPI080FPH4 VPI100FPL4 100L VPI100FPH4 100H VPI125FPL4 125L...
- Page 22 VPI Pressure Independent Control Valves & Actuators Configuration and Setup Start-Up Sequence When power is turned on, the actuator will automatically calibrate to determine the closing point of the valve. Calibration can take up to 10 minutes depending on the valve’s position at start-up. During the calibration actuator, the display will show “CAL”.
- Page 23 VPI PRESSURE INDEPENDENT CONTROL VALVES & ACTUATORS Step Display Description Valve Choose unit scale for flow rate. Default: l/sec. Options: l/sec or l/hr or GPM *scrolling top: SELECT UNIT SCALE Activate Flush mode at start-up Default: Enable. Options: Enable or Disable. *scrolling top: SELECT FLUSH MODE When no control signal (analog) is detected at start up, flush mode is started (5/6 of fully opened).
- Page 24 VPI Pressure Independent Control Valves & Actuators In Operation for DN50 – DN250 During operating of MRP75MAC and MRE75MAC actuators, users will see below display screens which shows multiple symbols and information. Carefully go through below table to familiarize with display indications during operation with the meaning each symbol and operation.
- Page 25 VPI PRESSURE INDEPENDENT CONTROL VALVES & ACTUATORS Alarm Menu To enter the alarm menu, simultaneously press and for 6 seconds. The alarm menu is only accessible if an alarm is present (i.e. when the icon is displayed). Press to go to the next alarm display and press to go to previous.
- Page 26 1. Power On the system with precautionary measures and cycle the actuator to verify if it’s working as per set parameters and as per intended application. 2. If the actuator output is incorrect, contact the Honeywell local representative. 3. If the control scheme requires fail-safe operation, ensure that, upon removal of power, the fail position coincides with the control sequence.
- Page 27 Fax: +974 4 4066 711 By using this Honeywell literature, you agree that Honeywell will have no liability for any damages arising out of your use or modification to, the literature. You will defend and indemnify Honeywell, its affiliates and subsidiaries, from and against any liability, cost, or damages, including attorneys’...