INSTALLATION
6 720 803 800 (2012/11)
28
Mains voltage connections
Fig. 50 Mains voltage connectors
4.7.1
MOUNTING OPTIONAL PLUG-IN CONTROLS
Refer the to Programmer/Timer manual for set up and operation of the
unit.
REMOVING THE BLANKING PLATE
The control panel must be released and swung forward slightly to gain
access to the top cover panel, refer to section 6.3 for access to the
control panel.
1. Release the captive screws securing the top cover panel.
2. Remove the cover panel to enable the blanking plate to be removed.
3. Release the three captive screws enough to allow the Installer access
cover to be lowered by 10mm.
4. Lower the Installer access cover to allow the blanking panel to be
removed.
5. Use the tab (1) to lift and also press up on the bottom edge of the
blanking plate to release the clips from the slots in the control panel.
6. Pull the blanking plate forward to remove.
Fig. 51 Removing the blanking plate
FITTING THE PROGRAMMER/TIMER
1. Connect the ribbon cable to the socket (2) in the control panel,
ensuring that the cable will fit into the recess (3) in the control panel.
2. Align the clips on the back of the Programmer/Timer with the slots in
the control panel.
Fig. 52 Connecting the Programmer/Timer
3. Push the Programmer/Timer in to engage with the slots in the control
panel.
4. Pull the Programmer/Timer down to secure with the clips.
5. Slide the Installer access cover up into position.
6. Secure with the three captive screws.
7. Replace the top cover panel.
8. Secure in position with the captive screws.
▶ Re-secure the control panel.
Mains voltage terminal strip
7
External frost thermostat
8
230 V A.C. switched live inputs
9
230 V A.C. mains output to wiring centre
10
DHW charge pump (NOT USED on Combi)
11
DHW circulation pump (NOT USED on Combi)
12
CH circulation pump (NOT USED on Combi)
13
Boiler 230 V A.C. mains supply
*
Pre-wired links
Table 12 Key to figure 50
NOTICE:
DHW LR switched live
▶ This input provides connection for a proprietary twin
channel control to time the preheat function on the
DHW. All Worcester twin channel digital controls
provide this functionality.
CAUTION:
Isolate the mains electrical supply before
starting any work and observe all relevant safety
precautions.
6720646608-1
10.1W
o
230V
IN
230V
OUT
FR FS LR LR
L
N
L
N
L
N
L
N
L
N
7
8
9
10
11
12
13
*
*
When fitting EMS intelligent programmers, step 1 can be
ignored.
6720646608-1
15.1W
o
1.
5.
6.
1.
2.
3.
4.
1
6720646608-1
16.1W
o
1.
2.
2.
3
2
1
