AERMEC TRS Series - Page 61

61
TRS
24/07 5979398_00
Number Description Range Default Unit Position
04 Defrost interval 15-99 30 Minute Circuit board
05 Defrost entering temperature -9….+5 -1 °C Circuit board
06 Defrost duration time 2-20 10 Minute Circuit board
07 CO
2
sensor function value 24-255 (unit= x10 PPM) 00 PPM Circuit board
08 Modbus address 1-16 1 Circuit board
21 ERV models match selection 0-15 0 (*) Circuit board
23 Fan speed control
0 = 2 speeds
1 = 3 speeds
2 = 10 speeds
2 Circuit board
24 Reset timer of fan operation
0 = Default
1 = Reset timer of fan operation
2 …. 5 = Reserved
0 Circuit board
25 Filter alarm setting
0 = By pressure switch
1 = 60 days
2 = 90 days
3 = 180 days
0 Circuit board
26 Pre-heating activation temperature (n.d.) - 15 …. 0 -5 °C Circuit board
(*) For spare parts only. The value is correctly set for each machine during the testing phase.
11.1.1 Instruction of parameter Settings
— Parameter 00: refers to power to auto restart mode after blackout : as default the unit will restart from the previous state
before the power supply interruption.
— Parameter 02-03: refers to automatic bypass function. The bypass is opened on the condition that the outdoor temper-
ature is equal or higher than X (parameter 02) and less than X+Y (parameter 03). Bypass is closed on other conditions.
— Parameters 04-06 refer to automatic defrost function. When EA sideof heat exchanger temperature lower than
-1°C (defrosting entering temperature, parameter 05) and last for 1 minute, and the interval of defrosting is
longer than 30 minutes (parameter 04), the exhaust fan will run at high speed automatically for defrosting, and
supply fan will stop, until EA side temperature higher than defrosting entering temperature +15°C for 1 minute,
or the defrosting time is longer than 10 minutes (parameter 06). If the unit enters defrost mode, the snow crys-
tal symbol appears on the control panel
.
— Parameter 07 refers to CO2 concentration control function (optional). After connecting the optional CO
2
sensor,
the CO
2
symbol will display on the screen. If CO
2
concentration is higher than setting value, the unit will work at
the maximum air ow rate; if the unit is already in highest speed when CO
2
concentration higher than setting
value, then unit keeps the highest speed running. If CO
2
concentration reduces lower than setting value, then
unit returns back to the previous status (standby, speed 1, 2, 3 etc.). CO
2
default setting value is 00, which means
CO
2
function o. Setting range is indicated in the previous table: the setting value multiply then 10, recommend SET
is 1000 PPM, that is setting 100.
— Parameter 08 refers to the central control function to identify the ModBus address of Unit.
— Parameter 21 to match the suitable program on PCB to the Unit model, refer to the table.
— Parameter 23 must leave to 2 value.
— Parameter 24 is used to reset the lter alarm by timer of unit operation: setting it to “1” the alarm is resetted. Given
the factory setting, the dirty lter alarm is setted from pressure switch (parameter 25 = “0”), so it will not necessary to
reset it, unless you set parameter “25” to values other than “0”.
— Parameter 25 identies the type of lter monitoring: the factory set is “0”, therefore the lter alarm occurs from the
eective pressure drop measurement by the pressure switch.
— Parameter 26 identies the set of outdoor temperature below which the SBE1 pre-heater is switched on. It is a
settable parameter: see the previous table.
Model ERV Code
TRS252 14
TRS352 13
TRS502 13
TRS652 11
TRS802 12
TRS1002 12
TRS1302 11
8. Setting the time band clock: keep the SET key pressed for 6 seconds to enter the time band clock setting mode. In this
interface, briey press the MODE key to change from time setting to day setting, ON for time bands, OFF for time bands.
Every single day of the week has two time bands called 1 and 2, it is possible to set a dierent programming for each
single day using one or two time slots (or none if no programming is desired).