SETUP & OPERATION
Page 14
When the start condition for Priority 1 is met, all boilers in
the PRIORITY 1 set will fire based on runtime. Once all
boilers in the PRIORITY 1 set have fired, the PRIORITY 2
set of boilers will fire based on runtime.
If the Start condition changes and/or is not met (such as
with: OA T or RET temp), the PRIORITY 2 set of boilers
will fire first/next based on runtime. This has the effect of
flipping the Priority of the sets.
Stopping Boilers:
When a boiler is to be stopped (water temp is above the
heating band), the Master checks the HeatNet boilers it has
available. The Master boiler then looks at which boilers are
returning Priority firing status (set on a boiler in:
(SETTINGS: FIRING MODE: MIXED BOILERS LAST
(example) If the Stop condition for Priority 1 is met, the
Master or Member boiler that are configured as
PRIORITY 1 with the highest runtime will be stopped LAST
(example). When the stop condition and SHED DELAY
times are met, all the remaining PRIORITY 1 set of boilers,
will stop based on runtime. If the Stop condition changes
and/or is not met (such as with: OA T or RET temp), the
PRIORITY 2 set of boilers will stop first/next based on their
highest runtime.
A boiler’s firing Priority can be designated as such in:
SETTINGS: FIRING MODE: FIRING PRIORITY:
PRIORITY menu on each boiler. A Priority of ‘1’ is the
highest priority, a ‘2’ the lowest (default is always 2).
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