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Press the Back button (
screen or menu.
Item
Set the external hot water
tank temperature (°F).
●
●
1. DHW Tank Set
This option is available
Temp
only when a tank
temperature sensor is
connected to the boiler,
and only when "3. DHW
Call Signal" is set to "2.
DHW Tank Sensor".
Set DHW Thermostat
Temperature.
●
●
2. DHW Boiler Set
Temp
Set DHW Tank Sensor
Temperature.
●
●
Select a device for sensing
the DHW demand.
3. DHW Call Signal
●
Set the DHW Priority time.
4. DHW Priority
●
Time*
●
Enable or disable the
protection against
legionella bacteria.
5. Anti Legionella
Function**
●
●
104 Operating the Boiler
) to return to the previous
Description
Setting range: 86
149°F
–
(30
65°C)
–
Default: 122°F (50°C)
Setting range: 104°F
(40°C, Absolute MIN) -
180°F (82°C, Absolute
MAX).
Default: 180°F (82°C)
Setting range: [DHW
Tank Set Temp +
18°F (10°C)] – 180°F
(82°C, Absolute MAX)
Default: 180°F (82°C)
1. DHW Thermostat
2. DHW Tank Sensor
Default: DHW
Thermostat
Setting range: 0 – 180
min
Default: 30 min
Setting range: Enable /
Disable
Default: Disable
Item
Select a DHW control
type.
6. DHW control
method
●
* DHW Priority Time refers to the time duration that the
boiler will give priority to DHW over space heating.
** This function will provide protection from growth
of legionella bacteria in the DHW tank only. It will
not protect water supply piping.
A mixing valve must be installed on the DHW
supply line when this mode is enabled as water
temperatures will exceed 140°F (60°C).
11.5.4 Viewing Error History
To view the error history, press the Menu button
(
), and then select "4. Error History".
A list of 10 recent errors are displayed on the screen,
with the most recent error displayed at the top of
the list.
Description
1. Supply water
2. Sys Supply water
Default: Supply water
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