9
Sales/Replacement Telephone 01604 762881
FIGURE 13. PCB BOARD
(default settings)
14.3
TRICKLE AIRFLOW ADJUSTMENT ONLY
14.3.1 To adjust this the boost control should be OFF (NO SWITCH LIVE).
NOTE:
During the adjustment do not switch boost control ON (SWITCH LIVE) as this will affect the boost
settings.
14.3.2 Put into installer mode.
14.3.3 To adjust the TRICKLE setting turn the RV1 clockwise
to increase the airflow rate and anti-
clockwise
to decrease the airflow rate to the required setting.
14.3.4 When the trickle airflow is set to the desired rate, exit installer mode.
14.4
BOOST AIRFLOW ADJUSTMENT ONLY
14.4.1 To adjust this, the boost control should be set to ON. (SWITCHED LIVE)
NOTE:
During the adjustment do not switch boost control OFF (SWITCHED LIVE) as this will affect the
boost settings.
14.4.2 Activate ‘Installer Mode’
14.4.3 To adjust the BOOST setting turn RV1 clockwise
, to increase the airflow rate and anti-clockwise
to decrease the airflow rate to required setting.
14.4.4 When the boost airflow is set to the desired rate, exit ‘Installer Mode’.
IMPORTANT NOTE:
After fan speed setting has been completed and the unit is no longer in
installer mode the RV1 (Fan adjust/boost overrun) is used to set the booster overrun time. Set
fully anti clockwise for no boost overrun and fully clockwise for 30 minutes boost overrun. The
adjustment is linear so mid position will give approximately 15 minutes boost overrun.
14.5
DIP SWITCH SETTINGS
14.5.1 BOOST LIMIT - limits the maximum boost speed available on the speed adjustment.
14.5.2 BOOST ON DELAY - gives a 2 minute delay in boost speed after a boost switch demand is initiated.
DIP
SWITCH
RV1
INSTALLER
MODE
SWITCH
DIP
SWITCH
RED LED
FLASHING
LIGHT
ON DIP
1 2 3 4
RED LED
FLASHING
LIGHT
EARTH
LEAD
RV1
DIP SWITCH POSITIONS
1
2
3
4
OFF
OFF
ON
OFF
