REMEHA Avanta Plus 24s, Installation And Service Manual

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3
Controls for the
AVANTA PLUS
and
AVANTA 18v
Boilers
The
AVANTA
series are fully condensing boilers using gas / air ratio controls to provide full modula-
tion and can be operated in the following modes:
All boilers require a permanent 230v single phase 3 amp fused power supply plus controls as below:
NOTE: The boiler is phase / neutral sensitive when used with external 230v controls
ON / OFF Control - fixed flow temperature where the boiler modulates it’s output to match a fixed flow set
point using simple 230v switching controls
•
Single or Two channel time clock (internal only available on the 24s / 28c / 35c and 39c)
•
Room thermostat
•
Cylinder thermostat
•
Diverting / mixing or isolating valves
MODULATING
Control - flow temperature is directly controlled by the outside weather or inside room com-
pensator to provide comfort conditions at all times using “OpenTherm®” controls:
•
Outside sensor
•
DHW sensor or cylinder thermostat
•
Room compensator
•
Digital time/weather or room compensator
•
Mechanical time/ analogue weather or room compensator
=====================
Controls available from Broag as optional extras
•
S62432 Internally mounted two channel digital time clock kit (not for the Avanta 18v)
•
S62432c Internally mounted single channel digital time clock (for the Combi series only)
•
50153 Outside sensor
•
S43946 DHW sensor
•
TBA DHW strap on thermostat
•
TBA DHW three way diverting valve and sensor kit
•
S59475 Room thermostat - Celcia 10
•
S59161 Room compensator - Celcia 15
•
58222 Externally mounted Digital Time / Weather compensator - Celcia 20
•
TG001 Externally mounted Analog Time / Weather compensator - Theben
•
DA001 Externally mounted two channel 24 hour time clock (230v switching)
•
DA002 Externally mounted two channel 7 day time clock (230v switching)
•
TBA Externally mounted wireless room thermostat set
Typical controls by others
•
External mounted simple two channel time clock providing, 230v switched supplies to time control
heating and domestic hot water eg. typical Honeywell ST699 or similar
•
Cylinder thermostat eg. typical Honeywell L641 or similar
•
Room thermostat eg. typical Honeywell T6360 or similar
•
HTG and DHW zone valves c/w a single end switch (closes on valve fully open) eg. Honeywell
V4043H or similar
•
Wiring centre
•
‘Y’ : ‘W’ : ‘S’ Plan—complete kits
•
Other manufacturer’s compatible ‘OpenTherm®’ time and temperature controls
When using the
AVANTA PLUS
Combi
boiler, DHW is always set for constant operation (not
timed) but can if required be changed to allow for time restriction using a two channel time clock
If required the
AVANTA
series can report a common
alarm or boiler run condition to an external control panel or
BMS by using the connections on
terminal block X7
Terminals 1 and 2 -
Common alarm
Terminals 1 and 3 - Boiler run
These are both - volt free (max capacity 230v 1 amp ) and are open contacts which close on common alarm
or boiler run respectively
Common
2
3
1
Common
Common alarm
(Closes on alarm)
Boiler run
(Closes on run)
Terminal block X7