CTRLMax Manual

62
CHAPTER 8
CHAPTER 8 - CASCADE
Cascade Settings
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Cascade Setting
Stage Delay 60 sec
Minimum Firing Rate 18%
Max. Firing Rate 398 MBH
CH / DHW Boilers 0
Auto Rotation Enabled
CH Prop. Gain 7
Minimum Firing Rate
18 %
0 % 100 %
Minimum Firing Rate is the minimum ring rate of a single
boiler in the Cascade System. The Master boiler uses this setting
to determine when boilers can be enabled and disabled.
Setting the Minimum Firing Rate below the recommended min-
imum will result in boilers being enabled too quickly which may
cause sharp increases in temperature from the Cascade System.
Setting the Minimum Firing Rate above the recommended mini-
mum will delay the enabling of boilers which may lower the sys-
tem eciency. For more information on the algorithm behind
the cascade operation, refer to Section 8.2 on page 55.
Adjust the Minimum Firing Rate using the LEFT or RIGHT keys,
then store the setting with the OK key.
Default : 18%
Only make changes after being instructed to do
so by Triangle Tube as changing of this value may
cause instability in the appliance cascade control.
NOTICE
Cascade Setting
Stage Delay 60 sec
Minimum Firing Rate 18%
Max. Firing Rate 398 MBH
CH / DHW Boilers 0
CH Prop. Gain 7
Auto Rotation Enabled
Maximum
Firing Rate
398 MBH
0 MBH 869 MBH
Maximum Firing Rate is the maximum capacity of a single
boiler in the Cascade System.
Adjust the Maximum Firing Rate using the LEFT or RIGHT keys,
then store the setting with the OK key.
This value, expressed in MBH, will correspond to the current ap-
pliance range.
Default: according to the boilers
Stable cascade operation requires that all boilers
in a Cascade System be the same size. Mixing boil-
er sizes in a Cascade System could lead to tempera-
ture fluctuations and erratic cascade operation.
NOTICE
Model Min. Firing
Rate
Max. Firing
Rate
Prestige Solo 80 18% 80 MBH
Prestige Solo/Excellence 110
Instinct Solo/Combi 110
18% 110 MBH
Prestige Solo 155
18% 153 MBH
Prestige Solo 175 18% 170 MBH
Prestige Solo 250 18% 240 MBH
Prestige Solo 299 18% 299 MBH
Prestige Solo 399 18% 399 MBH
Instinct Solo/Combi 155 18% 155 MBH
Instinct Combi 199 18% 199 MBH
CTRLMax_w Instinct_UK version_222171_A01.indd 62 18/07/2019 18:38