Install Instructions

INSTALLATION INSTRUCTIONS
62-2009
VBN2, VBN3 Control Ball Valves
With Threaded Connections
APPLICATION
The VBN2 Two-Way and the VBN3 Three-Way Control
Ball Valves control hot and chilled water with glycol
solutions up to 50% in heating, ventilating, and air
conditioning (HVAC) systems to provide two-position or
modulating functions.
These valve assemblies can be ordered with or without
factory-mounted non-spring return or spring return direct-
coupled actuators (DCA).
Application Notes
IMPORTANT
Valve sizing is important for correct system
operation. Undersized valves do not have
sufficient capacity at maximum load. Oversized
valves do not have sufficient authority over the
load in modulating applications.
Oversized valves can cause excessive cycling
and the seat and ball can be damaged because
of the restricted opening.
Proper Use
These valves are only for use in cold, warm, hot water
systems and for steam applications. They are designed
for a medium temperature range of from 35 to 250°F, at a
maximum pressure of 360 psig VBN valves are to be
operated with the appropriate Honeywell direct coupled
actuators only.
Water should be properly filtered, treated and
conditioned according to local conditions and the
recommendations of the boiler or chiller manufacturers.
The installation of a strainers and filters is recommended.
IMPORTANT
The presence of excessive iron oxide (red rust)
in the system voids the valve warranty.
Effective C
V
When valves are mounted between pipe reducers, there
is a decrease in actual valve capacity because the
reducers create additional pressure losses in the system.
This is especially true for ball valves because of their
high capacity.
For effective C
V
s for Honeywell control ball valves when
used with pipe reducers, refer to the Product Data sheet
form no. 62-2648.
Flow Characteristics
The VBN2 Two-Way Ball Valves have:
• an equal percentage flow characteristic with
characterized flow control insert.
• a linear flow characteristic with full port balls.
The VBN3 Three-Way Ball Valves have:
• between ports A and AB: an equal percentage flow
characteristic.
• between ports B and AB: a linear flow characteristic.
Required Operating Torque
Both Honeywell non-spring return and spring return low
torque direct coupled actuators can be utilized with the
VBN2 and VBN3 valves. VBN valves use a patented seat
design that reduces the torque needed from the actuator.
A 35 lb-in. DCA provides sufficient torque to close the
valve at rated close-off. (See Table 1.) These ratings
exceed most HVAC application requirements.
Table 1. Close-off, Differential Pressure Ratings.
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a hazard-
ous condition.
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 service
technician.
4. After installation is complete, check out product
operation as provided in these instructions.
Valve
Type Valve Size
Close-off Pressure
Rating (psi)
2 way 1/2”, 3/4” 130
1", 1-1/4”, 1-1/2”, 2",
2-1/2”, 3"
100
3 way 1/2”, 3/4”, 1" 50
1-1/4”, 1-1/2”, 2",
2-1/2”
40