3004811-2018-09-14 Operation 8.3.2 Heating coil HCW Error on unit 0% No For water heating coil HCW: If there are no current faults for the heating coil ("Fault on unit" shown as "No"), forced start may be activated: ● Enter an output level for HCW to start the motor valve and pump for the water heating coil 8.3.2 Heating coil COCW 0% Heat./Cool. Heating Analogue output 0,0V Error on unit No For water heating coil MCOCW: If there are no current faults for the heating coil ("Fault on unit" shown as "No"), forced start may be activated: ● Enter an output level for MCOCW to start the motor valve and pump for the water heating coil ● Select "Heating" for choice of heating or cooling state. Menu 8.3.3 Cooling unit 8.3.3 Cooling unit CCW Error on unit 0% No (The menu screen is different depending on which cooling unit is selected - CH, CCH, CCW, MXCU, MXHP) If there are no current faults for the cooling unit ("Fault on unit" shown as "No"), forced start may be activated: ● Set the output level for the cooling unit Menu 8.3.4 Dampers and relays 8.3.4 Dampers and relays LSF > Off LSA > Off RGS/AUX OUT > Off Alarm relay > Off VDI light > Off BP1 [2.00V] > 2.00V BP2 [2.00V] > 2.00V RAD [2.00V] > 2.00V The following dampers may be forced open or closed via the menu: ● LSF (closing damper, outdoor air) ● LSA (closing damper, exhaust air) ● RGS/AUX OUT (flue gas damper) ● Forced tripping of the alarm relay can be provoked ● The light in units with VDI lighting can be switched on and off ● BP1 (bypass damper 1) ● BP2 (bypass damper 2 - only VEX340-350-360-370) ● BP3 (bypass damper 3 - VEX370 only) ● RAD (return air damper - VEX340 only). Menu 8.4 - Calibrating MPT NB The pressure transducers (MPT) may only be calibrated when the unit is stopped. The doors should be opened to equalise pressure with the surroundings and to ensure correct calibration. ● Select "Yes" for calibration (automatically changes to "No" again when the MPTs have been calibrated). 67/120
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