Technical data

76
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.
Increased SAP Ratings
As well as the Si 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.
Classification
Greenstar 25Si Greenstar 30Si
(25kW) Combi Boiler (30kW) Combi Boiler
Height 710mm (max) 710mm (max)
Width 400mm 400mm
Depth 330mm (max) 330mm (max)
Weight (Lift) 27.1kg 27.1kg
Heating Flow/Return Connections 22mm compression 22mm compression
Hot/Cold Water Connections 15mm compression 15mm compression
Pressure Relief Valve 22mm Ø 22mm Ø
Condensate Connection 22mm Plastic Pipe 22mm Plastic Pipe
Gas Connection 2mm compression 22mm compression
Primary Water Content 3 litres 3 litres
Minimum Domestic Inlet Pressure
For Maximum DHW Flow Rate
1.3bar 2bar
Minimum Domestic Inlet Pressure
To Operate The Appliance
0.2bar 0.2bar
Maximum Domestic Inlet Pressure 3.0bar 3.0bar
DHW Flow Rate @ 35°C!T 10.2l/min 12.3l/min
Output To Central Heating
7.2-24kW 7.2-24kW
(24,560-82,000 Btu’s/hr) (24,560-82,000 Btu’s/hr)
Wall Mounting Jig Yes Yes
Filling Loop Optional Optional
Plug-In Timers Yes (Optional) Yes (Optional)
Optimising Room Temperature Controller Yes (Optional) Yes (Optional)
Condensing In DHW Mode No No
Maximum Vertical Flue (100mmØ) 6,400mm 6,400mm
(inc terminal) (inc terminal)
Maximum Horizontal Flue (100mmØ) 4,600mm 4,600mm
Maximum Horizontal Flue (125mmØ) 13,000mm 13,000mm
Maximum Vertical Flue (125mmØ) 15,000mm 15,000mm
(inc terminal) (inc terminal)
SEDBUK Value/Band Band A – 90.1% Band A – 90.1%
NOX Classification Class 5 Class 5
Technical data – Si series