Assortment / System Description

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• Operating modes:
– Auto: Changeover between Normal and Reduced according to the time
program
– Continuously Normal
– Continuously Reduced
– Continuously Protection (frost protection)
• External contact for changeover of operating mode
• Holiday and special day program:
– Selectable DHW operating mode for holiday periods
– Time program for special days
• Control functions:
– Demand-compensated precontrol based on heat request
– P- or PI control action (PID for the control of modulating burners)
• Switching functions:
– Control output (3-position or DC 0...10 V)
– Configured control functions (e.g. output signal for heat demand handled via
relay contact)
– Yearly time switch with automatic summer-/wintertime changeover
– 7-day program (6 switching points per day)
– 5 clock channels for time program of heating circuits 1, 2, and 3, DHW
heating, DHW circulating pump
– Pump control
– Control of twin pumps
• Monitoring and protective functions:
– Valve overrun and valve kick
– Pump overrun and pump kick
– Monitoring pump overloads and pump flow
– Outside temperature-dependent frost protection for plant and building
– Fault indication with red LED
– Fault relay, handling of status and fault signals
The RMH760B is supplied with basic type H. It represents the basis for the free
configuration of customized applications.
The RMH760B is supplied with 41 plant types. They represent combinations of
heating plants.
A selection of plant types (programmed applications) and their associated plant
diagrams are shown on the following pages. For all available applications, see
Data Sheet N3133.
DHW heating (cont’d)
For all heating circuits
Basic type H
Plant types
Programmed applications