Worcester Greenstar Ri Compact ErP Installation, Commissioning And Servicing Instructions page 29

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 7.4 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 [1] to be
removed.
3. Press your thumbs on the bottom edge of the blanking plate to
release the clips from the slots in the control panel and push up.
4. Pull the blanking plate forward to remove.
1.
Fig. 38 Removing the blanking plate
Fitting the programmer/timer
5. Connect the ribbon cable connector [2] to the socket (3), ensuring
that the cable will fit into the recess (4).
6. Align the clips on the back of the Programmer/Timer with the slots.
6.
Fig. 39 Connecting the Programmer/Timer
7. Push the Programmer/Timer in to engage with the slots.
8. Pull the Programmer/Timer down to secure with the clips.
9. Replace the top cover panel.
10.Secure in position with the captive screws.
▶ Re-secure the control panel.
Greenstar Ri Compact ErP 6720813282 (2015/07)
2.
3.
1
4.
4
3
6.
2 5.
10.
Fig. 40 Fitting the Programmer/Timer
Part number Description
7 733 600 003 Greenstar Comfort
7 733 600 001 Greenstar Comfort I RF
7 733 600 002 Greenstar Comfort II RF
Table 20 Controls accessories
New installations
If a new complete heating system is installed in a new build property or it
is a first time installation in an existing property, the heating systems
must conform to current building regulations Part L1a.
The exception to this are single storey, open plan dwellings where the
living area is more than 70% of the total usable floor area. Then this type
of dwelling can be controlled as one zone.
An alternative would be individual electronically controlled TRVs.
For dwellings with a floor area over 150m
temperature control for each zone is required. All radiators must have
TRVs fitted in all rooms except bathrooms and rooms with thermostats.
Existing installations
For boiler replacements on an existing system, it is not necessary to zone
the upstairs and downstairs separately, compliance with the zone
requirements can be achieved by a single room thermostat or
programmable room thermostat.
While the system is drained down, TRVs must be fitted to all rooms
except the bathrooms and the room with the room thermostat.
System wiring centre connection
▶ Connect external controls LIVE supply to terminal L at the 230V OUT
terminal block connection.
▶ Connect external controls LIVE return to terminal L
▶ Connect external controls NEUTRAL to terminal N at the 230V OUT
terminal block connection.
▶ Refit the control panels.
230V
OUT
LR L N
EMS N
LR N L N
1 2
E
N
L
External
Pump
Fig. 41 System wiring centre
INSTALLATION
9.
7.
8.
2
, separate time and
R
230V
230V
IN
MAINS
L N L
L N L
SUPPLY
L N E
Wiring Centre/Junction Box
L N E SW
29