SmartVent Synergy 190 User Manual - page 47

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8.  GLOSSARY OF TERMS

Air Source

The source of inlet air: either the roof cavity or 

outside.  

An in-line 1kW duct heater used to raise the 

temperature of the inlet air.

Tempering Heater

When enabled, Synergy will pull warm air from 

just your heated room (where your controller is 

placed), first passing through the Heat Exchanger 

which significantly warms the incoming air before 

distributing it throughout the home. 

Heat Boost Mode

(Multiple extract Systems)

The Core By-pass feature opens a damper which 

allows the inlet air to by-pass the Heat Exchanger 

and therefore not be warmed by the hot exhaust air. 

Core By-Pass Mode

Roof Cavity

The roof space where your Synergy system is 

installed can provide a source of heated source air 

at times.