Zehnder G4 Filter Set For HRV95, CA350 & CA550 125mm This is the 'TW' model

This is the 'TW' model which is a single speed fan operated via a light switch or pull cord and has an integral overrun timer

The PD1 Surface mountedcentrifugal fan with second standby fan & motor is designed for two room ventilation

remote or light for timer activation

This fan will perform to Building Regulations Installed Performance requirements

The iCON 60 TM has has an adjustable run-on timer of between 1 - 30 minutes operated via a light switch or separate remote switch

Zehnder G4 Filter Set For HRV95, CA350 & CA550 125mm This is the 'TW' modelIdeally, filters should be inspected monthly and given a light vacuum to remove dirt and debris. Filters will eventually become blocked with residual debris and should then be replaced. Generally, blocking will occur every 6 12 months depending on the location (near busy roads or inner city areas tend block more quickly than remote country settings). To see the Zehnder Filter fiting video on youtube please select: Comfo Air 350 Filter video Zehnder P