Domestic Hot Water Functions - Fujitsu WSYA050ML3 Design & Technical Manual

3-6. Domestic hot water functions

Line Access
1600 U Operating mode
U Nominal setpoint
1610
The backup electrical system is required to reach this level.
1612 U Reduced setting
I Release of DHW load
24h/day: The temperature of the DHW is constantly maintained at the DHW comfort setting.
Heating circuit time program: The DHW is produced according to the programming for the ambient
1620
temperature (with 1 hour in advance when switched on).
Program 4/DHW: The DHW program is separate form the heating circuit program.
Off-peak tariff*: The electrical backup heating is only authorized to operate during the off-peak
period.
Time program 4/DHW or low-tariff *: The electrical backup heating is authorized to operate during
the comfort period or off peak.
*: Connect the "Power Provider" contact to input EX2. In the case of a day/night contract, the
electric backups for the DHW tank are subject to the power supplier's tariffs. Switching on the
electric backup for the DHW tank is only authorized during off-peak hours.
1640 I Legionella function
Legionella function
1641 I
periodically
1642 S Legionella function weekday
1644 S Legionella function time
1645 S Legionella function setpoint
1646 S Legionella function duration
Legionella function circuit
1647 S
pump
1660 S Legionella function weekday
3-6. Domestic hot water functions
Function Setting range or display
Off, On, Eco
Reduced setpoint (line
1612)...65 °C
8 °C...Nominal setting (line
1610)
24h/day
Heating circuit time program
Program 4/DHW
Off-peak tariff (Off-peak)
Program 4/DHW and Off-
peak
Off, Periodically (depending
line setting 1641), Fixed
weekday (depending line
setting 1642)
1 to 7 day
Monday, Tuesday,...
Off, On
Time program 3/HCP, DHW
release, Time program 4/
DHW, Time program 5
- (03-31) -
Setting Factory
increment setting
On
1°C 55°C
1°C 40°C
Program
4/DHW
Off
1 day 7 day
Saturday
Off
DHW
release
3. Function table