Inbuilt Threshold Humidistat with Rapid Rise Detection (HT models only)
The HT models include a digital humidity sensor with pre-set Threshold and
Rapid Rise sensing. The settings are fixed and cannot be adjusted.
Threshold:
The fan will increase in speed proportionally between trickle and boost flow rates
at 75%RH and 85%RH.
•
0-75%RH
= trickle speed flow rate
•
76-85%RH = Proportional between trickle and boost
•
86-100%RH = Boost speed flow rate
Rapid Rise Detection:
If the humidity increases by more than 5%RH (RH2) compared to the humidity 5
minutes ago (RH1), the fan enters boost mode. Once the humidity starts to fall,
the fan will remain in boost for a further 30 minutes or until the humidity reaches
the original (RH1) humidity level, whichever is sooner.
D. SERVICING AND MAINTENANCE.
WARNING: THE FAN AND ANCILLARY CONTROL EQUIPMENT
MUST BE ISOLATED FROM THE POWER SUPPLY DURING
MAINTENANCE.
1. At intervals appropriate to the installation, the fan should be inspected and
cleaned to ensure there is no build-up of dirt or other deposits.
2. Wipe the inlets and front face with a damp cloth until clean.
The fan has sealed for life bearings, which do not require lubrication.
Fig.1
Continuous trickle (no manual boost). (The fan is internally fused)
220-240V ~ 50Hz
Fan
Switched Spur
Summary of Contents for 498095
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