11
MEV 160 & MEV 300
0345 27 27 810
SHOULD YOU ENCOUNTER ANY PROBLEMS
WITH YOUR UNIT, CALL US ON:
COMMISSIONING
All maintenance and building works should be complete before commissioning this MEV unit.
This will avoid any major disturbance to the installation or high volumes of dust or debris being
drawn into the system. Do not commission the MEV unit until it is fully installed including power,
ductwork, internal valves and external vents.
MEV systems must be commissioned in accordance with Approved Document F of the Building
Regulations for England and Wales. Further good practice and advice for the installation of MEV
systems can be found in the latest edition of the Domestic Ventilation Compliance Guide for
England and Wales. For MEV commissioning guidance in other countries, please refer to the
relevant local Building Regulations for that country.
•
Determine the required ventilation rates. For guidance see Approved Document F of the
building regulations for England and Wales.
•
Press the SET button for 4 seconds to enter commissioning mode. (Humidity sensor input is
disabled temporarily while the unit is in commissioning mode).
•
LEDs B, C and D will light and LED A will flash, indicating that the extract boost flow rate is
being modified.
•
Fully open all extract valves then measure the air flow rate at all system extract points using
a calibrated air flow meter capable of measuring in l/s or m
3
/hr.
•
Add the extract rates from all rooms together, then compare this value to the calculated
whole building (boost) extract ventilation rate.
•
Use the + and - buttons to increase or decrease the flow rate in order to meet the calculated
whole building extract ventilation rate. (See Approved Document F). When maximum speed
setting is reached, the LED will flash fast. When the minimum speed setting is reached, the
LED will flash slowly.
•
Now adjust the individual valves to extract at the appropriate rate for each wet room. (Once
this step has been completed it may be necessary to adjust the unit boost rate again to
account for any increase in pressure). Then lock the valves in position.
•
Press the SET button once to move on to the extract trickle flow rate. LEDs A, C and D will
light and LED B will flash indicating that the extract trickle flow rate is being modified.
•
Again use the + and - buttons to increase or decrease the flow rate in order to meet the
calculated whole building (trickle) ventilation rate. (See approved document F).
•
When commissioning is complete for the boost and trickle flow rates, press SET for 4
seconds to return to normal running mode. The unit will automatically return to normal
running mode after 60 minutes of inactivity.
