Engineer
39
MAXXfl o EVO
4.5 COMPLETE PARAMETER LIST TABLE (CONTINUED)
PARAMETER DESCRIPTION
FACTORY
DEFAULT
NOTES
DHW Storage tank
5050
Charging temp max
78
O
C
Maximum temperature that can be charged by the burner(s)
5060
DHW electric immersion
heater operating mode
Substitute
In place of the boiler , DHW can also be heated with an
electric immersion heater. If DHW heating is provided by an
electric immersion heater, no request will be sent to the boiler
. The changeover between boiler and electric immersion
heater takes place based on the following criteria:
5061
DHW electric immersion
heater release
DHW release
Defi nes when the immersion can be activated (See options
below):
5062
DHW electric immersion
heater control
DHW sensor
Defi nes control method for activating the immersion.
Either the MAXXfl o EVO internal sensors or an external
mechanical thermostat
5070
DHW automatic push
ON
If the DHW storage tank temperature falls below 2 switch-
ing diff erentials, automatic push is activated heating the
DHW tank to the upper setpoint. Once activated it cannot
be turned off , except by removing power to the heater
Substitute
The electric immersion heater is only
used if the boiler delivers a fault status
message or has been shut down via
boiler lock. This means that in normal
situations the DHW is always heated by
the boiler.
Summer
The electric immersion heater is used
as soon as all connected heating circuits
have switched to summer operation.
The DHW is again heated by the
boiler as soon as at least 1 of the heating
circuits has switched back to heating
operation. But the electric immersion
heater is also used if the boiler delivers
a fault status message or has
been shut down via boiler lock.
Always
DHW is heated with the electric immer-
sion heater throughout the year. This
means that when using this application,
the boiler is never required for DHW
heating.
24h/day
The electric immersion heater is continu-
ously released independently of the time
programs.
DHW Release
The electric immersion heater is released
within the DHW release period.
Time program 4/DHW
The electric immersion heater is released
within switching program 4.
ON
If the DHW temperature drops by more than
2 switching diff erentials (operating line 5024)
below the Reduced setpoint (operating line
1612), one-time charging to the nominal
DHW setpoint is eff ected again (operating
line 1610).
Legend:
SDBW Switching di
ff
erential DHW (5024)
TBWw Nominal DHW temp setpoint (1610)
TBWR Reduced DHW temp setpoint (1612)
OFF
DHW push can only be triggered
manually.
Summary of Contents for CWH 30/201
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