Envirovent KIT-PIV-SMOKE-200 Installation Manual page 9

In conditions between 19°C - 25°C the units will increase air flow
rate by 10%. Above 25°C the PIV & MIV airsource units automatically
switch to bringing air directly from outside to avoid bringing hot air
into the property from the loft space.
The PIV unit uses a single 200mm diffuser to provide air into a hallway
or landing area.
The MIV unit uses two 100mm diffusers to provide airflow to separate
locations within the building. It is normally required for applications where:
a) The hallway is small.
b) Limited heating is available.
c) The loft hatch fills the hallway ceiling.
d) Airflow is required in a remote area such as a bedroom.
Option 1
Option 2
AFTER INSTALLATION THE END USER SHOULD
KEEP THIS GUIDE FOR FUTURE REFERENCE
If a higher airflow is required in the hallway, position
that diffuser a shorter distance from the unit.
Hallway
(higher flow rate)
If a similar airflow is required in the hallway, position
both diffusers at similar distances from the unit.
DO NOT
THROW AWAY
Other room
(lower flow rate)
Other room
(similar flow rate)
Hallway
(similar flow rate)
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