Standard Assessment Procedure 2005 – Appendix Q MVHR Installation Guide
Page 5 of 6
1. System Balancing & Calibration
Decision
Yes, No or
N/A
Has the air flow been checked using a proprietary device such as
an anemometer (recommended)?
Have the controls been set following a defined process?
Refer to figure 3 flow diagram
Have all distribution grilles been locked where possible to minimise
unapproved occupant adjustment?
Figure 3
Ensure all external and internal
windows and doors are closed
Set fan speed using manufacturer data
table
Set normal daytime air flow on extract
points starting at location furthest from
unit
Set normal daytime air flow on input
points starting at location furthest from
unit
Step 1
Step 2
Step 3
Step 4
Step 5
Set fan speed to boost and measure
extract rates at each location, adjust
fan speed setting as required to
achieve required flow
