AIC TMU 500, Руководство по установке и обслуживанию, Страница: 52 / 68

G-52
Z-106164_EN ● 00
M
aintenance
Draining the Appliance
Shutting Down for Maintenance
Conditions: None
Procedure:
1. Press the On/Off switch located on the right
side of the control panel.
When in the OFF position, the lamp
switch is not illuminated.
2. To completely cut the power supply to the
appliance, either disconnect the power sup-
ply cable from the appliance, or use the ex-
ternal circuit breaker.
Follow-on tasks:
i
Restarting after Maintenance
Conditions:
Procedure:
1. Press the On/Off switch located on the right
side of the control panel.
When in the ON position, the switch
remains pushed in and is illuminated.
2. Allow the appliance to operate for a few min-
utes, then bleed the air from the circuit by
opening draw-off tap in the hot water circuit.
Follow-on tasks:
1. Check there is no leak in the water circuits.
2. Check the circuit pressure.
The water pressure must be the same
as in the hydraulic system design, but
not less than 1 bar.
i
i
The TMU appliances are not pro-
vided with the safety equipment
that the installer must place in the
system!
Conditions:
Procedure:
1. Connect the optional draining valve ( ) to
the sewer with a hose.
2. Open the draining valve ( ) to empty the
heating circuit.
3. Provide relief at the manual air vent of the tank.
4. Close the draining valve (
) once the heat-
ing circuit is empty.
Follow-on tasks: None
OFF
Fig. 25. Draining the Appliance - Typical