24
Water system
balancing
A complete knowledge of the
hydronic system, including its
components and controls, is
essential to proper water system
balancing and should only be
completed by a qualified expert.
The system must be complete,
and all components must be
in operating condition before
beginning the water system
balancing procedures.
Each hydronic system has
different operating conditions
depending on the devices
and controls installed for the
particular application. The actual
balancing technique may vary
from one system to another.
After the proper system
operation is established, the
appropriate operating conditions
such as water temperatures, flow
rates and pressure drops should
be recorded for future reference.
Before and during water system
balancing, conditions may
exist due to incorrect system
pressures which may result
in noticeable water noise or
undesired valve operation. After
the entire system is balanced,
these conditions will not exist on
properly designed systems. If
any of these conditions persist,
recheck the system for air that
may not have been properly
vented during start-up.
Air system balancing
All ductwork must be complete
and connected and all grilles,
panels and filters installed before
the start of balancing. System
balancing is to be conducted by
a qualified balance specialist.
Non-ducted units do not require
balancing except to select fan
speeds. Ensure that the units
are not obstructed by window
treatments, drapes or furniture.
After proper system operation
is established, the actual unit
air delivery and the actual fan
motor amperage draw for each
unit should be measured and
recorded for future reference.
