heat-timer Multi-MOD Platinum, Инструкция по установке и эксплуатации, Страница: 36 / 60

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Multi-MOD Platinum with Space and Scheduling Installation and Operation Manual
HT# 059299-00
A
STAGe MODulATION
GAIN
Adjustable from -10 to +10 Default: 0 in Normal Operating Mode
Adjustable from 1.0 to 10.0 Default: 5 in Process Operating Mode
PReSS TO SeleCT: /<Maintenance>/ Gain
Normal Operating Mode
• In this Mode, the Gain adjusts the modulation aggressiveness of the
control PID logic . See "Operating Mode" on page 28 .
--------- GAIN ---------
+0
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• A Gain of 0 is a good starting point for all systems .
• If during normal load conditions, the system temperature/pressure tends
to oscillate significantly, decrease the Gain by two numbers (for example,
from 0 to -2) .
• If during normal load conditions the system temperature/pressure tends
to remain consistently below the Set Point (or consistently above the Set
Point), increase the Gain by two numbers (for example, from 0 to 2) .
• After each change wait for at least 15 minutes before evaluating the
change's effect on the system .
Process Operating Mode
• In this mode, the Gain acts as a throttling range around the target . See
"Operating Mode" on page 28 .
• When the actual temperature/pressure is equal to the target, only the
lead stage is on at 100% modulation .
• Each Gain range above or below the target controls one stages
modulation linearly from 0 to 100% .
• The Process Gain Table below shows the relationship between the Gain
and stage modulation .
AleRT
The Process Gain Table does
not show all the possible
modulation values . The
table is for example only .
The Multi-MOD Platinum will
control the modulation in one
percent increments based on
the target and Gain .
PROCeSS GAIN TABle
System Temperature Stages Modulation
More than 1 x Gain above Set Point lead Stage is OFF
1 x Gain above Set Point lead Stage at 1%
0.5 x Gain above Set Point lead Stage at 50%
At Set Point lead Stage at 100%
0.5 x Gain below Set Point lead Stage at 100%, 1 lag at 50%
1 x Gain below Set Point lead Stage at 100%, 1 lag at 100%
2 x Gain below Set Point lead Stage at 100%, 2 lag at 100%
3 x Gain below Set Point All Stages at 100%
PuRGe DelAY
Adjustable from 0.0 to 10.0 minutes Default: 1.0
PReSS TO SeleCT: /<System Settings>/<More Settings>/Purge Delay
• The Purge Delay is designed to match the boilers purge period before it
is brought on line and can begin generating output .
• When activating a new stage, the Multi-MOD Platinum holds its
modulation at the Ignition % until the Purge Delay ends . Once the Purge
Delay is over, the control begins adjusting its modulation .
• Set the Purge Delay according the stage's manufacturer specification .
--- PURGE DELAY ---
1.0m
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