Advanced fan systems that really work

Home About us Where to buy Contact Terms & Conditions

About Ventilation

Kitchen and bathroom extractor fans benefit the occupier by providing a healthier living environment...

>>>MORE

 


Installations Team

RHL have a professional team, which specialise in the installation of ventilation equipment and extractor fans using high quality diamond drilling.

>>>MORE

 


Accreditations

 


AUTOSTAT

The AUTOSTAT is a true fully automatic humidity controller - it is user friendly and requires no user setup at all. It can control both kitchen and bathroom fans to ensure that they run only when required, providing 10 years proven condensation control for the home.

The Autostat IV is an intelligent, microprocessor driven controller, which unlike conventional humidistats is based on a determination of absolute humidity, not relative humidity. The important difference between the two is that absolute humidity is not affected by the temperature of the surrounding environment, making the Autostat perfectly suited to environments with widely fluctuating air moisture content,
and temperature/condensation“noise” (kitchens, laundry rooms, shower & bathroom).

By way of example, cooking and tumble dryers produce copious amounts of water vapour, however a local RH% controller would register only a slight increase in RH% due to a simultaneous increase in temperature causing the air to hold more moisture (See graph below, click to enlarge). Increased ventilation would therefore not be triggered. The Autostat would however identify a change in the moisture content of the air and react accordingly.

Relative Humidity

Autostat IV Operation: The Autostat samples the surrounding environment at regular intervals, stores and averages the results over the previous two hours and uses this as a reference base of humidity for the next two hours. When the measured humidity exceeds this reference base by a predetermined amount the controller triggers action, as illustrated in the graph to the right.

 

Autostat IV Features: Autostat IV is pre programmed at the factory and should require no adjustment through its lifetime. The units operate on 240V AC and 12V AC/DC and provide output control through relay load output position 1. · Integral override on pull switch · Remote override on · Light switch trigger with proportional on time hold · Voltage free output control with switch over relay · On board program header, with Autostat IV programming software available from website · Link settings for 12/240v ac or voltage free relay (items factory set) · Autostat IV spreadsheet to generate custom graphs on downloaded log data · Tri-coloured LED Status indicator · Extensive User Manual, covering all Autostat IV software and Autostat operations available for download on request.

Product catalogue codes:

Autostat-IV-12V 12V Autostat IV humidity controller, data log, overrun timer

Autostat-IV-12VP 12V Autostat IV humidity controller, data log, pull cord override

Autostat-IV-240V 240V Autostat IV humidity controller, data log, overrun timer

Autostat-IV-240VP 240V Autostat IV humidity controller, data log, pull cord override

Autostat technical data:

Dimensions: 85mm x 85mm x 25mm

Patent: 2316188 (UK), 6230980B1 (US), H10-509502 (Japan), 0917677 (Ireland) and International Patent PC/GB97/02155

Warranty: Two-year replacement warranty. For Local Authorities and Housing Associations we offer a 'two-part' guarantee: in addition to two year warranty during the second year of the warranty period we offer an RHL site visit to replace any faulty equipment.

Support

General notes on extractor fans installation, user manuals, wiring diagrams, etc.

>>>MORE

 

Warranty

All our products come with a two year no-quibble replacement guaranty against any unlikely failure...

>>>MORE

 

Telephone & Fax

Tel: +44 (0) 1491 410170

Fax: +44 (0) 1491 413180

 

 

 

 

Copyright Ray Hudson Limited 2006. All rights reserved.