Ignition; Modulation Start - heat-timer Multi-MOD Platinum Installation And Operation Manual

Standby
• Standby stages are used as back stages in extreme load conditions .
• Standby stages can only be activated after all stages in Auto have been
at 100% modulation for the Standby Delay .
• A Standby stage can never be a lead stage .
Manual
• This mode should only be used to test the stage . Manual overrides the
System Prove input . The exact percent of modulation for a stage can
be set with the Manual mode . Once selected, the unit will immediately
turn on and modulate to the selected percentage . The stage status will
indicate m50% for the manually set stage .
Off
• Any stage without a relay or not connected to a physical unit should be
set to Off .
• The Off Mode is also used to disable stages that are in service .
On
• The On mode should only be used when testing a stage . This mode
overrides the System Prove input . Stages set to On will immediately
modulated to 100% .

IGNITION %

Adjustable from 1 to 100%
STAGe: STAGE MENU/Ignition %
• The Ignition % is the minimum modulation percent for the stage to be
activated . See "Modulation Concept" on page 4 .
• The Ignition % is maintained during the Purge Delay, Soft-Off Delay, and
Last-Stage-Hold .
• For most modern power draft units, the Ignition % can be set to 1% .
Other units or atmospheric units may require their modulating to be
from 20-50% before the stage can be active Check with the equipment
manufacturer for the minimum firing rate required .

MODulATION START

Adjustable from 0 to 99%
STAGe: STAGE MENU/Mod Start %
• The Modulation Start is the modulation percent at which the lag stage can
be activated . See "Modulation Concept" on page 4 .
• For example, if the Modulation Start for Stage "B" is set to 75%, then
when Stage "A" reaches 75% modulation, Stage "B" is turned on .
• When modulation is decreasing, the lag unit will remain at the Ignition %
until the lead stage reaches 40% of its Modulation Start, or 2% above the
Ignition Point, whichever is higher .
40
Multi-MOD Platinum with Space and Scheduling Installation and Operation Manual
Manual and On Stage Modes
activate the stages regardless
of the Prove input signal .
Do not use the Manual or
On options unless all safety
controls are checked and
adjusted to avoid hazard
- STAGE A MANUAL -
[
------- STAGE A -------
Default: 1%
Ignition Point
[
------- STAGE A -------
Default: 80%
Modulation Start
[
WARNING
situations .
50%
]
1%
]
80%
]