S&P EBB-175 DESIGN Manual Del Usuario página 15

EBB MODELS DV
Dual speed and OFF. Low speed running for permanent "trickle" ventilation / High
speed override / OFF, controlled by integral pullcord switch, Fig.8. Pullcord switch
sequence – OFF, LOW, HIGH. The neon indicator is lit when the fan is running.
TheEBB-250DVonly,mayalternativelybe connected for remote switching. The re-
mote switch (e.g. light switch) will switch between permanent LOW speed "tric-
kle" ventilation an HIGH speed override. There is no OFF position with remote
switching. Use Fig.9 for wiring to a remote switch, when the integral pullcord
switch must be set for LOW speed and the pullcord cut off close to thefan.
EBB MODELS T
Single speed with overrun timer. The fan must be wired to a remote switch (e.g.
light switch, Fig.9 or independent switch Fig.10). When switched "ON", the fan
will operate at full speed, and will continue torun for a pre-set time after the
switch is turned "OFF". The timer is factory set at 20minutes. To reduce the ope-
rating time, turn the adjuster in an anti -clockwise direction, Fig.11.
The neon indicator is lit when the fan is running.
EBB MODELS HM
The fan contains an integral humidity sensor. In automatic mode the control swit-
ches the fan on at LOW speed when the room Relative Humidity (RH) reaches the
set-point. The fan will continue to run until the room RH falls below the set point.
To prevent night time tripping the humidity sensing is inactive below 10ºC. The
integral pullcord or a remote switch (e.g. light switch) will switch between auto-
matic humidity control and manual override at HIGH speed. The Light Emitting
Diode (LED) indicator will be lit for manual override. The LED will NOT light un-
der automatic humidity control, even if the fan is running. There is no permanent
OFF position.
Use Fig.8 for wiring the manual override
by the integral pullcord. Use Fig.9 for wiring the manual override to a remote
switch, when the pullcord must be switched to the automatic position (LED off)
and the cord cut off close to the fan. The humidity control is factory set to switch
on at about 72% RH.
To LOWER the set -point use a small screwdriver to turn the adjuster ANTI -
CLOCKWISE, Fig.11. This makes the controller MORE sensitive to RH, i.e. it will
come on at a lower RH.
To RAISE the set -point use a small screwdriver to turn the adjuster CLOCKWISE,
Fig 10.
15