Draining The Appliance; Draining Unvented Installations; Draining Vented Installations - A.O. Smith 28 30 50 60 Installation & Service Manual

A. o. smith corporation service manual water products 28 30 50 60

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Table Of Contents

Table of Contents

gis

4.3

Draining the

appliance

4.3.1

»OFF

^ ON

È WEEK PROGRAM

Figure 4.2 Main menu

Figure 4.3 ThermoControl

4.3.2

Release R.1.3 UK

Draining unvented installations

Some service activities require the appliance to be drained. The procedure is as

follows:

1. Activate the

with B.

2. Use H and L to place the cursor beside

3. Confirm

with E.

OFF

4. Wait until the fan has stopped. The

Note

Failure to wait until the fan stops can cause damage to the appliance.

5. Turn the appliance OFF (position 0) using the ON/OFF switch on the

control panel. See

Figure

6. Disconnect the appliance by putting the mains switch between the appliance

and the mains power supply to position 0.

7. Shut off the gas supply h.

8. Close the stop valve i in the hot water pipe.

9. Close the supply valve of the cold water supply a.

10. Open the drain valve g.

11. Bleed the appliance (or installation) so that it drains completely empty.

Draining vented installations