Lochinvar Harmony - Manual (Page 13)

13
SELECTING THE OPERATING MODE
Default - Normal
• Most heating applications do not experience rapid changes in
system temperature. For these systems, it is best to adjust the
modulation based on the rate of system rise or fall. This PID type of
algorithm will help to prevent short cycling of the stages, reduce
thermal stress on the system, and maintain an accurate system
temperature. If your equipment is of this type, select Normal.
• Systems that run for process may experience large changes in load
almost instantaneously. In Process mode, the Harmony will react
immediately to load changes. Large load changes may cause stages
to be short cycled, as the Harmony can enable and disable stages
within seconds.
After making this selection, the main display screen will be displayed.
-- OPERATING MODE --
>NORMAL
PROCESS
-- OPERATING MODE --
NORMAL
>PROCESS
-- OPERATING MODE --
NORMAL
>PROCESS
PRESS TO SELECT
ADJUST
Press to
select
Normal
PRESS TO SELECT
ADJUST
or turn
to scroll
down
PRESS TO SELECT
ADJUST
Press to
select
Process
SYSYSYSYSY
STEM STSTEM STSTEM STSTEM STSTEM ST
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