A.O. Smith TWI 35-200, Installation, User And Service Manual

Page: 24 / 92

2. Open the Temperatures submenu.
Fig. Temperatures submenu
35°C
BACK
Operating Setpoint
Hysteresis
Tank Temperature
65°C >
5°C >
3. Open the Operating Setpoint control screen.
Fig. Operating setpoint control screen
60°C
MIN
40°C
MAX
85°C
Setpoint
BACK ACCEPT
4. Change the water temperature setpoint:
a)
Use [+] to increase the setpoint.
b) Use [-] to decrease the setpoint.
5. Press [ACCEPT] to confirm the value or press [BACK] to return to the previous
screen.
4.2 Turn off the water heater
4.2.1 Turn off for a short period
To turn off the water heater for less than 2 months, set the control switch on the front of
the water heater (see 1) to 0.
Warning
The power of the water heater stays on when the control switch is set to 0.
Note
If the water heater is in OFF mode for more than 2 months and no water is drained, air
bubbles may be formed in the water heater. This can lead to air in the water pipes.
4.2.2 Isolate from the mains
To isolate the water heater from the mains:
1.
Set the control switch to 0.
2. Disconnect the water heater from the mains by turning the isolator.
4.2.3 Turn off for a long period
When the water heater needs to be turned off for more than 2 months, contact your
service and maintenance engineer to decommission the water heater.
w
n
24 User part