Anti-Freeze Protection; Key Lock; Shutdown; Standard Shutdown - Worcester GB162 Series User Instructions

Shutdown

Setup menu
▶ Set the maximum output of the heating
system.
The output is displayed in % when modifying
the setting.
Adjustment range: 0 - 100%.
No information about DHW mode is shown
here.
▶ Change the minimum pump speed if
required.
Adjustment range:
30 % - max. (setting max. parameter).
▶ Increase the minimum pump speed if
parts of the heating system do not
become hot enough.
▶ Change the maximum pump speed if
required.
Adjustment range:
min. (setting min. parameter):
• 50-V2 - 57%
• 65-V2 - 65%
• 85-V2 - 65%
• 100-V2 - 83%
▶ Reduce the maximum pump speed if
aggravating flow noises can be heard.
Pump over-run time following end of heating
demand [Min].
Adjustment range: 1 - 60 min./24 hours.
Table 5 Setup menu
4.3

Anti-Freeze Protection

Parts of the line may freeze during the cold season. Water permanently
flows through the heating system which significantly reduces the
probability of freezing.
▶ Check whether all radiator valves are open.
▶ Press key O to open the setup menu.
▶ Set the pump over-run time to 24 hours ( Chapter 4.2).
If the boiler is switched off, see Chapter 5.2.
4.4

Key lock

The setup menu can be locked to prevent the settings from being
changed by unauthorised personnel. Proceed as follows:
Activation
▶ Press the M and N keys simultaneously for 5 seconds. The word
"Lock" is displayed for 5 seconds. The information menu remains
readable.
Fig. 6 Display - Lock
8
Disable
▶ Press the M and N keys again simultaneously for 5 seconds to
remove the key block; the word "Lock" disappears.
5 Shutdown
5.1

Standard shutdown

▶ Put on/off switch in position "0".
▶ Close the gas isolation valve under the boiler ( figure 2).
5.2

Shutting down when there is a risk of frost

If the boiler stays on:
▶ Set the pump over-run time to 24 hours ( Chapter 4.2).
▶ Make sure that sufficient flow to all radiators is possible.
If the boiler is switched off:
▶ Put on/off switch in position "0".
▶ Close the gas isolation valve under the boiler.
▶ Drain the entire heating system.
6

Inspection and maintenance

The user is responsible for ensuring the general safety and annual
servicing of the heating system.
Recommendations:
▶ To ensure the boiler functions correctly, maintenance should be
carried out annually by a certified installer.
▶ To do this, organise a maintenance and inspection contract.
6.1

Refilling the heating system

Every heating system is refilled with heating water in different ways,
depending on the water quality.
▶ You should therefore ask the installer to explain the refilling process
to you at system handover.
▶ If persistent refilling is required then please contact a qualified
contractor, it is likely that a leak exists.
6.2

Cleaning the casing

▶ Only clean the casing of the boiler with a damp cloth and possibly a
mild detergent.
7

Display rendition

7.1

Display codes

A display code provides information about the status of the boiler. Fault
codes are either shown in the display directly or can be called up via the
information menu. Proceed as follows:
▶ Navigate the menu to the fault code level. Press L and toggle with M
and N.
▶ Identify the fault code and search for the corresponding explanation
( table 6).
▶ Implement the solution to eliminate the fault.
There are 3 types of code:
▶ normal operating code
▶ blocking fault code
▶ interlocking fault code
For safety reasons, the boiler shuts down and locks as soon as a fault
occurs. This is indicated by an illuminated fault code. The boiler must be
reset in order to unlock it. Proceed as follows:
10011620-001
▶ Hold c pressed down until "rE" appears in the display. In most
cases, the boiler will work again normally following the reset.
Commercial Boiler Series – 6720814333 (2019/05)