6
Features of the Greenstar condensing
regular boiler range
A condensing boiler is more efficient due to its ability to
extract more heat from the flue gases normally lost to the
environment through the flue system.
As the flue gases pass through the heat exchanger this
extra surface area can cool the flue gases to around 55°C
whereupon the latent heat within, which would normally be
lost to the atmosphere, is instead released and applied to
the system.
It is this ability to extract as much heat as possible from
the gas it burns that gives the Greenstar condensing regular
range an exceptionally high level of operating efficiency.
This higher efficiency is recognised within Section L of the
Building Regulations, subsequently achieving a higher SAP
or NHER rating.
Whenever a demand for DHW or CH is made, the boiler’s
electronic control system is energised and the burner
electronically ignites via a flame ionisation system.
The pre-mix burner automatically adjusts to the set level.
The flow temperature of the boiler is then maintained at the
customer setting by the fascia mounted variable control.
Should the system requirements reduce during operation
(TRVs closing down, etc.) and the flow temperature
exceed the customer setting then the burner will modulate
downwards to match the system demand level. Should the
flow temperature continue to rise then the burner will be
de-energised and the control system will go into an
anti-cycle mode and not allow the appliance to re-fire for
a set period.
Fluing options
The Greenstar regular range features 2 different sizes of
multi-directional RSF flue systems, 100mm or 125mm. The
flue can be run horizontally or vertically with additional 90º
or 45º in-line bends allowing changes of route or direction,
providing an extremely flexible and versatile fluing system
enabling the appliance to be sited virtually anywhere. More
details are shown on pages 26-30.
Greenstar Ri security features
•
Security coding
•
Non-removable wall screws.
Gas options
Greenstar regular boilers are manufactured in both natural
gas and Liquid Petroleum Gas (LPG) variants.
Greenstar CDi Classic Regular and Ri boilers
The Greenstar regular boilers are designed for connection
to a fully pumped heating and hot water system e.g. Y or
S plan. For this reason no plug-in controls are available
on Greenstar regular models. The advice of a controls
manufacturer should be sought.
•
The Greenstar regular boilers are suitable for a wide range
of heating loads allowing extension to the heating system
without upgrading the boiler
•
The Greenstar regular boilers are capable of operating on
both open vent and sealed primary water systems*
•
Two or more Greenstar regular boilers can be linked
together to cater for commercial or industrial applications.
*Sealed systems require additional external components: expansion vessel and PRV (not supplied by Worcester)
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