Technical data

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DT10RF digistat
A familiar wall-mounted 24 hour
programmable RF digital thermostat
combined with a fascia mounted single
channel programmer to time the hot
water cylinder or combi preheat
functions. The programmer includes a
built-in receiver for the room
thermostat and all of the functionality
of the DT20.
DT10RF optimiser
A seven day digital programmable RF
thermostat with a seven day
programmer/receiver in the boiler
fascia. The transmitter is the tried and
tested Optimiser as available with other
Worcester boilers. The optimum start
feature, where the thermostat delays
the firing of the boiler until necessary,
is a useful energy-saving option.
TD200 text display
A seven day programmer with easy-to-
use text display with automatic time
and date setup, automatic
summer/winter time changeover and a
backlight for use in low light conditions.
Three on/off periods can be set per
day. The TD200 can be fascia mounted
or hard wired outside the boiler using
the optional wall mounting socket. The TD200 features an easy-to-
use full text display providing more information than standard digital
controls. A hard wired room thermostat is available to provide
optimum start functionality.
RT10 room thermostat
A hard wired optimising room
temperature controller with digital
display for use with the TD200. The
display shows current and desired
temperature and an advance button
allows the user to move to the next
heating switch point on the TD200.
TD200 wall mounting socket
A Worcester branded wall mounting
socket which allows the TD200 to be
hard wired away from the boiler.
Model
Greenstar 25CDi Greenstar 30CDi Greenstar 35CDi Greenstar 40CDi
(25kW) Combi Boiler (30kW) Combi Boiler (35kW) Combi Boiler (40kW) Combi Boiler
Height (mm) 750 (max) 750 (max) 750 (max) 750 (max)
Width (mm) 440 440 440 440
Depth (mm) 360 (max) 360 (max) 360 (max) 360 (max)
Weight – dry (kg) 48.5 48.5 48.5 48.5
Heating Flow/Return Connections 22mm compression 22mm compression 22mm compression 22mm compression
Hot/Cold Water Connections 15mm compression 15mm compression 15mm compression 15mm compression
Pressure Relief Valve (mm Ø) 15 15 15 15
Condensate Connection 22mm Plastic Pipe 22mm Plastic Pipe 22mm Plastic Pipe 22mm Plastic Pipe
Gas Connection 22mm compression 22mm compression 22mm compression 22mm compression
Primary Water Content (litres) 3.75 3.75 3.75 3.75
Minimum Domestic Inlet Pressure
For Maximum DHW Flow Rate (bar)
1.2 1.4 1.5 1.7
Minimum Domestic Inlet Pressure
To Operate The Appliance (bar)
0.2 0.2 0.2 0.2
Maximum Domestic Inlet Pressure (bar) 10 10 10 10
DHW Flow Rate @ 35°CΔT (l/min) 10.5 12.6 14.3 16.3
DHW Flow Rate @ 40°CΔT (l/min) 9.2 11.1 12.5 14.3
Output To Central Heating
kW 7.7 - 25 7.7 - 30 7.7 - 30 7.7 - 30
(Btu) (26,272 - 85,300) (26,272 - 102,360) (26,272 - 102,360) (26,272 - 102,360)
Wall Mounting Jig Yes Yes Yes Yes
Filling Loop Yes Yes Yes Yes
Plug-In Timers Yes (Optional) Yes (Optional) Yes (Optional) Yes (Optional)
Optimising Room Temperature Controller Yes (Optional) Yes (Optional) Yes (Optional) Yes (Optional)
Intelligent Controls Yes (Optional) Yes (Optional) Yes (Optional) Yes (Optional)
Condensing In DHW Mode Yes Yes Yes Yes
Maximum Vertical Flue (mm)
11,500 9,400 8,000 4,900
(100mmØ) inc. terminal
Maximum Horizontal Flue (mm) (100mmØ) 10,000 7,900 6,500 2,600
Maximum Horizontal Flue (mm) (125mmØ) 23,000 18,500 16,000 12,500
Maximum Vertical Flue (mm)
23,000 18,500 16,000 16,000
(125mmØ) inc. terminal
SEDBUK Value %/Band 90.3%/Band A 90.3%/Band A 90.3%/Band A 90.2%/Band A
NOX Classification Class 5 Class 5 Class 5 Class 5
Technical data – CDi series
Increased SAP ratings
As well as the CDi models achieving very high SAP ratings for
dwellings, the addition of the optimising temperature controller further
increases these ratings as well as being part of the recommended
best practice, as covered by the CHESS design standard.
BBT180 Gstar CDi T&S Iss B 4/5/06 12:50 Page 6