News

Heating and Ventilation Systems That Put Energy Efficiency First

Johnson & Starley is highlighting examples of its energy saving heating, ventilation and heat recovery systems at Ecobuild 2010. Both new and established products will be on show including the renowned RenoXtra range of boilers, LE155/250 whole house heat recovery systems, CE180 and 300 Premier central extract ventilation systems.

RenoXtra high efficiency combination condensing boilers are available in 30kW and 37kW models with each model featuring a gas saver module - a passive flue gas heat recovery system - built into its cabinet. This provides additional system efficiency by re-cycling flue gas heat which would normally be wasted and expelled to the atmosphere. Virtually all the energy from the incoming gas supply is extracted and reclaimed energy is stored in the unit before being used to pre-heat the incoming cold water. This results in extra domestic hot water (DHW) efficiency, lower gas consumption and running costs as well as reduced carbon emissions.

The Energy Saving Trust's new Domestic Low and Zero Carbon Technologies Guide (P1.3) is now at final draft stage. A key point of the new document is that passive flue gas heat recovery systems are now included in the guide and it will therefore now include RenoXtra which also qualifies for the Appendix Q rating on the SAP database.

The LE155 and LE250 whole house heat recovery systems will recover heat energy and provide essential air management. They incorporate energy efficient EC fan motors with running cost around just half of AC fans. The systems are also SAP Appendix Q listed.

For convenience, the slim line and compact systems have been designed to fit into a standard sized kitchen cupboard. Alternatively they can be sited in the roof space and in both cases wall mounted remote controls are provided. The units can now also be supplied with a cooker hood. The LE250 has airflow ratings of up to 250m³/hr on its maximum speed setting, making it suitable for larger installations whilst the smaller LE155 will suit less demanding installations.

Johnson & Starley's latest generation of central extract ventilation systems supports the latest version of Part F of the Building Regulations and Good Practice Guide 268 for domestic ventilation. Designed for use in new build and existing dwellings, these central extract systems are designed for installation in the roof space or ceiling void. Their slim design and the ability to mount them in different positions provide the contractor with complete flexibility. All units, however, have a fan speed controller with the option to be conveniently mounted remotely and allow ventilation performance to be increased by up to 25%, in accordance with the Buildings Regulations

The CE300 Premier central extract system is designed for whole house ventilation and is capable of achieving airflow of 300 m³/hr. It includes and EC fan for even more energy efficient operation and lower running costs. For smaller dwellings, the CE180 system provides spigots for one duct in and out, providing an airflow of up to 180m³/hr. Both units are SAP Appendix Q listed.

Date published: 25/11/09