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Plant operation
selector enduser
State
Cause
Boiler temperature
setpoints
Manual switch
Frost protection and
release input
106/232
Building Technologies
HVAC Products
7.3
Additional boilers
The basic configuration is used to activate 2 boilers for the boiler sequence. If additional
boilers are required, they must be configured in the extra configuration.
By assigning a burner stage, the setpoint compensation or a pump to a boiler, the
function block of the respective boiler is activated.
For more detailed information, also refer to chapter 3 "Commissioning".
7.4
Boiler operating modes and boiler setpoints
Main menu > Commissioning > Settings > ... or
Main menu > Boiler ... > Boiler operating mode
Operating line
Preselection
State
Cause
The user can switch off the boiler via operation.
If "Off" is preselected, the internal frost protection function remains active. Heat re-
quests from an external consumer due to frost protection are considered also.
The boiler's state is indicated (On / Off).
It is indicated why the current state is active.
The boiler temperature setpoint is predefined by the boiler sequence manager.
On the Info level, the boiler temperature setpoint and the actual value boiler tempera-
ture can be called up.
7.5
Releasing and locking a boiler
A boiler can be released or locked either via the digital input (release input) or operation
(boiler operating mode).
Main menu > Boiler ... > Boiler operating mode
Operating line
Preselection
Using the digital release input, the boiler remains locked as long as the input is passive.
If the boiler is locked via the release input, setting "Frost protection (release input Off)"
can be used to select whether or not the boiler shall remain off also when there is a
heat request due to frost protection.
Boiler Sequence Controller RMK770
7 Boiler control
Range
Auto / Off
Released / Off
Commissioning /
Frost protection for con-
sumer /
Overtemp protection/overrun /
Frost protection for boiler /
Operating mode selector /
Protective boiler startup /
Release delay burner /
Outside temperature lock /
Minimum limitation boiler /
Test mode /
Flue gas measuring mode /
Individual operation /
Request / No request
Range
Auto / Off
Factory setting
Auto
Factory setting
Auto
CE1P3132en
23.04.2009
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