Copy Settings (Stage A Only) - heat-timer Multi-MOD Platinum Installation And Operation Manual

• Using the same example, as the load decreased, Stage "B" would
modulate down to its Ignition % . Stage "A" would then modulate down to
30% . Only then, Stage "B" turns off .
• If the Lag Delay is set to anything other than 0, a stage must always
go to 100% modulation before the next stage is activated . However,
the Modulation Start should still be set correctly as it is used during
modulation reduction .
• The Modulation Start will generally be set differently based on the
Modulating Mode:
Modulating Mode - NORMAl
• Lower Modulation Start setting allows the lag boiler to be activated and
warmed up early for smoother output and better target control .
• Higher Modulation Start settings can prevent unnecessary stages from
being activated .
• Some general guidelines to follow:
○ Less than 50% - not recommended in the Normal Modulating Mode .
○ 50-70% - These lower settings might be used in an application that
has wide load swings such as an industrial plant or a hospital . This
allows an additional boiler to be brought on line before the previous
boiler has begun to reach its capacity .
○ 70-90% - This range is recommended for most applications . When
there are several stages of relatively equal capacity and all can be
used to hold the load, this allows some degree of overlap, without
activating unnecessary stages .
○ 90-100% - Recommended when one stage can always handle the
load while the other stages are mainly used for backup .
Modulating Mode - PARAllel
• The Modulation Start should be set to the maximum value where the unit
runs most efficient .
○ Less than 30% - These lower settings are recommended for
condensing boilers with high turn-down ratios of 4 to 1 or greater .
○ 30-50% - These settings are recommended for the rest of all
condensing boilers .

COPY SeTTINGS (STAGe A ONlY)

STAGe: STAGE MENU/Copy Settings
• This option copies only the Ignition % and Modulation Start from stage
"A" to the rest of the stages .
Multi-MOD Platinum with Space and Scheduling Installation and Operation Manual
COPY STAGE A
SETTINGS
to all Stages
AleRT
The Mode must be set for each
stage . The Copy Settings
command will not set the Mode
for the rest of the stages .
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