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8
X3
O/AIR TEMPerature SENSOR
CONFIGURATION
Economy cycle operation using analogue output Y1 can be interlocked with an
outside air temperature sensor (either passive or active) connected to terminal X3,
such that the use of a modulating motorised economy cycle damper set is inhibited
for temperature control unless the outside air temperature is more favorable for
temperature control then using recycled air from the controlled space. A low limit
outside air temperature can also be set to inhibit Y1 economy cycle output if the
O/A temperature is below an adjustable setting.
To enable this feature, Press the fascia button labeled “
ENTER
” to have the LCD
display jump to the 1
st
item in the menu tree “
SET
CLOCK
”, then scroll down the menu
tree list with the “
DOWN
” arrow button until “
X3 O/AIR TEMP.CONFIGURATION
” is
displayed. Press the “
ENTER
” button to open this menu and the existing status is
displayed. If “DISABLED” is displayed press the “
DOWN
” arrow button to change the
setting to ‘ENABLED” then press “
ENTER
”.
The following user setting can then be edited using the “
UP, DOWN & ENTER
buttons:
SENSOR TYPE:
PASSIVE
: 4K@25C 2 wire Sensor (SOT-D) or
ACTIVE
: 0-10V~0-100C 3 wire Sensor (OSAO)
O/A TEMP Y1
low limit O/P lock out : < 0-20C (factory default =16c)
ALLOW Y1 IF O/A BETTER (then room) BY
: 0.3-10C (factory default=0.5)
HEVAC CONTROL AGENCIES PTY LTD. 7/54 HOWLEYS RD.
NOTTINGHILL, VIC. 95627888
www.hevac.com.au
21/10/19
set temperature
that 10vdc =
sensor calibration
or offset adjustment
Note : if the O/A X3 sensor is set as an active type in software, an internal
red jumper marked as CN2-1 on the bottom PCB (3rd of 7 jumpers from
left) has to be relocated from the factory default position "T" to the "V"
position
....
SEE IMAGE ON PAGE 19
