38 Instruction manual TWI 35-130 G/TWI 45-190 G
6 Drain
6.1 Drain unvented
installations
6.2 Drain vented
installations
For some activities the device needs to be drained. Proceed as follows:
1. Electrically isolate the device by turning the main switch between the
device and the electricity mains to the 0 position.
2. Shut off the gas supply (10).
3. Close the stop valve (11) in the hot water pipe.
4. Close the stop valve (4) in the cold water pipe (A).
5. Connect the discharge hose to the drain valve (9).
6. Open the drain valve (9).
7. Aerate the device (or installation) allowing it to completely empty.
For some activities the device needs to be drained. Proceed as follows:
1. Electrically isolate the device by turning the main switch between the
device and the electricity mains to the 0 position.
2. Shut off the gas supply (10).
3. Close the stop valve (11) in the hot water pipe.
4. Close the stop valve (4) between de water tank and the cold water inlet (A).
5. Connect the discharge hose to the drain valve (9).
6. Open the drain valve (9).
7. Aerate the device (or installation) allowing it to completely empty.
