ZYMBO AATT Ventilarredo RX-200/ECO, Руководство по обслуживанию

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ZYMBO AATT
Ventilarredo Service Manual – English Pag. 72
Pre-heat
1) AUX2(Cold water free contact) is always off.
2) If Ti1(Chilled water coil temperature)<36 ºC [or depend from PR 06 setting], AUX1(Hot water free
contact) is on while indoor fan remains off. If Til could not reach 36 ºC [or depend from PR 06
setting ]for 40 minutes(or PR12 setting), LCD would display error code: E5.
3) If Ti1(Chilled water coil temperature)>=36 ºC [or depend from PR 06 setting ] for 2 minutes, or
Til>=75 ºC, indoor fan runs at set speed.
4) If indoor coil temperature sensor is damaged, pre-heat time is set for 2 minutes and indoor fan runs at
set speed. Display flash
Alarm E2.
Post-heat
1) AUX1(Hot water free contact) is off.
2) Fan would run with low speed.
3) Within 2 minutes, if Ti1(Chilled water coil temperature)
≤
36ºC, fan stops.
4) After 2 minutes, fan would stop.
5) If chiller water coil sensor is damaged, post-time is 2 minutes.
6) If unit is turned off, no post-heat function.
Over heat protection of indoor coil
1) If Ti1(Chilled water coil temperature) >= 75 ºC for continual 5 seconds, MTV1(Chilled water
motorized valve) and AUX1(Hot water free contact) are turned off, indoor fan remains on and runs at
high speed.
2) Command on board display Eb/Wired wall pad display E11.
3) If Ti1(Chilled water coil temperature)<70 ºC for continual 5 seconds, MTV1(Chilled water motorized
valve) and AUX1(Hot water free contact) are turned on, indoor fan remains on and runs at set speed.
4) If indoor coil temperature sensor is damaged, the protection mode will become obsolete and the unit
will work as the Pre-heat and Post-heat set times.
Static operation in heat mde
1) AUX2(Cold water free contact) and always off.
2) If Tr(Room air temperature) <= Ts(Setting temperature)
﹣
1 ºC, heat operation is activated,
AUX1(Hot water free contact) and MTV1 ( Chilled water motorized valve ) is turned on. Indoor fan
stop
3) If Tr(Room air temperature) >Ts(Setting temperature), heat operation is terminated, AUX1(Hot water
free contact) and MTV1 ( Chilled water motorized valve ) is turned off. Indoor fan remain off
4) The range of Ts is 5 °C~30 ºC. If PR setting is activated, Ts range is same as PR setting.
5) Indoor fan speed settled on static speed ( no fan )
6) This setting is only through command on board.
7.4.2.4 Dehumidification mode
When unit is selected with heat only mode(PR1 setting), dehumidification mode would be invalid.
There are two logic for Dehumidification mode. When unit is connected with humidistat kit, PCB would
check humidistat automatically, and work with 2nd solution “Humidistat control” accordingly.
Traditional logic
1) AUX1(Hot water free contact) is always off.
2) If Tr(Room air temperature) >= 25 ºC, MTV1(Chilled water motorized valve) will be on , after 90
second also AUX2(Cold water free contact) will be ON for 10 minutes . After both will be OFF for 6
minutes.