Step 1
Step 3
Step 2
‘LOCKED’
‘UNLOCKED’
Line Indicator
(1)
9
2.7 BMS Connectivity - CMEV.4eHT Only
2.7.1 The CMEV.4eHT unit can be connected to a BMS system that can provide a variable 0-10 Volt output that will be
used to control the fan operating speed, as shown within table 1.1 below:
2.7.2
Removal of Fan Motor Assembly (See Figure 5)
WARNING: The CMEV.4eHT unit must be isolated from the mains supply before removing the fan motor
assembly.
1) Remove external locking screw (1).
CAUTION; Fan motor assembly is free to move after the next operation – in ceiling installations
please ensure the fan is manually supported during the following steps.
2) Rotate anti-clockwise, noting ‘LINE INDICATOR’ moving from the ‘LOCKED’ to ‘UNLOCKED’ position
(See Figure 5a).
3) Fan motor assembly can now be lowered / lifted out of main fan housing.
2.7.3 Figure 5 – Removal of Fan Motor
Figure 5a – ‘LOCK’ & ‘UNLOCK’ Positions
Voltage
Speed Control
0V – 3.2V
Trickle
3.3V – 6.4V
Medium
6.5V – 10V
Boost
Table 1.1
