HEX390 Installation & Commissioning Instructions September 2016
15
5.
Filter Timer
Yes/No (default No) – Controller counts hours run by the fan and when filter is
due for a change the display flashes with
‘Swap Filter’
. If filter timer is set to ‘Yes’, another
menu appears allowing filter period adjustment (240 day) (range 150 - 240 days). The filter
timer can be reset in the user menu at any time. The timer should be reset after the filters
have been cleaned or replaced.
6.
I/Side Ref Temp
(default 18°C) Range 16-24°C. This is the reference temperature for the
inside of the house, used for:
•
Heating – when house temp (IS) is lower than 18°C (default) and outside temp (OS) is
lower than 12°C (default) the heater will operate (if fitted).
•
Summer – when house temp (IS) is higher than 18°C (default) and outside temp (OS) is
higher than 27°C (default) the unit will shut-down.
7.
O/Side Ref Temp
(default 12°C) Range 8-16°C. This is the reference temperature for the
outside air, below which heater operates (if fitted).
8.
O/Side Degree Offset
(default 0°C) this allows unit to be calibrated in the unlikely event that
outside air temperature reads too high or low (adjustment range -10°C to + 10°C).
9.
I/Side Degree Offset
(default 0°C) - As above.
10.
Heat P/band
(default 5°C) Range 1-7°C. Heat Proportional Band - When heater is fitted and
conditions call for its operation, heater will start heating at 20% when OS (outside) drops to
reference temp (default 12°C), and will operate at 100% when temperature has dropped by a
further (default) 5°C (ie when OS is 7°C).
11.
Summer Temp S/down
(default 27°C) Range 25°-35°C. When OS (outside temp) is greater
than 27°C and IS (inside temp) is greater than 18°C, the system shuts down.
12.
User Sys
Yes/No (default No) - when set to ‘Yes’, there is an option in the User menu to turn
the system On/Off. Once the system has been turned off, any key may be pressed to return
the unit to regular operation.
13.
Factory Reset
Yes/No (default No). ‘Yes’ resets all menu items to the factory default settings,
these default settings are shown in brackets above. This option will ask for confirmation to
‘Erase Settings?’
before performing the factory reset.
•
Optional Attic Damper Kit.
A diverting branch can be attached to divert the intake from
outside air to the attic to utilise the heat gain from roof during winter months. Press mode
and up arrow together until ‘
Damper is on
’ or ‘
Damper is off
’ displays. The user can
then select between
‘Change damp
er? YES
’ or ‘
Change damp
er? NO’
then displays. Use the
up arrow to change between the two settings and press the mode key to select.
Digital Controller - Commissioning Instructions
(continued)
