Zehnder Rittling Centair CMEV.4e, Руководство по установке

Страница: 12 / 16

Trickle Speed Factory
set to setting 2 Trickle Speed Factory
set to setting 3
12
3.1.5 Use ‘turn pots’ to achieve the desired motor speed at both speeds. Medium speed represents the mid speed
between the two settings. For example, if the trickle speed ‘pot’ is set to 20% of full motor speed and the boost
speed ‘pot’ is set at 60%, Medium speed will automatically be 40%.
3.1.6 Commissioning – Factory Settings
Factory settings suitable for two bedroom apartments up to 100m 2 floor area, with a Kitchen plus 2 Wet Rooms
(such as Bathroom, Utility Room, Shower Room, Ensuite, WC).
3.1.7 Commissioning – Fine Tuning
Minor adjustments may be required depending on overall ductwork length.
Fine-tuning of the motor speeds can be achieved by using the ‘turn pots’ on the fan casing to ensure
optimum efficiency (See Figure 8). Record airflow rates for room extract valves and also the ‘pot’ settings
for trickle and boost speeds on the front page of this installer guide.
Figure 8 - ‘Speed Pot’ Setting Adjustment Panel
Note; Fan performance can be adjusted between these set points for further fine tuning, as the motor is 100%
variable in range.
3.1.8 Valve Set-up
Performance levels to be verified at the extract valves using an appropriate method such as a rotating vane
anemometer and air cone kit.
To adjust valves:
• Set the fan speed approximately to achieve the desired extract high flow rate.
• Close all windows and doors, including the rooms in which measurements are being carried out.
• The index terminal (the one furthest away) should be set to fully open.
• All other terminals are adjusted to achieve the required flow rate.
• If the index terminal has to be closed to achieve the correct flow rates, then reduce the fan speed and
balance the terminals.
• Switch the unit to low speed to achieve the desired extract low flow rate.It should not be necessary to
adjust the extract valves further.