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

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ZYMBO AATT
Ventilarredo Service Manual – English Pag. 70
7.4.1.5 Auto mode
This function is study to obtain maximum comfort for occupant people , for this reason our priority is to
have :
1)
Auto mode is selectable only from master unit or wired wall pad connected with master unit. If
selected Auto mode from master unit, slave units would not change with other mode. System working
condition, like cooling, heating or fan, should be same with master unit or master wired wall pad.
2) Temperature set point must be selectable from user, range is 5-30°C. If PR setting is activated, Ts
range is same as PR setting.
3) Cooling or heating will be decided from machine logic.
4) Unit would work with setting speed.
5) When mode is changed, the setting temperature is set with default
25 ºC.
6) Cooling/heating mode, the min working time is 30 minutes.
7) Every time the unit is turned on in auto mode, AUX1(Hot water free contact), AUX2(Cold water free
contact) and fan are off. After 5 seconds fan run at min speed .
8) After 20 sec unit check Tr and compare with Ts, and check Ti1(Chilled water coil temperature).
Default setting temperature is 25 ºC.
9) If Tr(Room air temperature) > Ts(Setting tempe2 ºC, cool operation is activated, AUX2(Cold
water free contact) is on. Unit would work with Anti-hot air setting in cooling mode.
10) If ( Ts -2 °C ) ≤Tr ≤ ( Ts+2°C) , AUX2(Cold water free contact) will be off , AUX1(hot water free
contact) already off , and fan close.
11) If Tr(Room air temperature) < Ts(Setting temperature)-2 ºC, heat operation is activated, AUX1(hot
water free contact) is on. Unit will work with Pre-heat function.
12) When the master and all slave units reach set point, master unit would check setting temperature and
room temperature again, and work with next working mode.
13) Protection function is valid.
Important note : If operator changes fan speed during Auto Mode, machine would work like above cool
or heat logic with fan speed settled from operator. Operator can set only speed from 1 to 6 and Auto fan
speed, no static speed. When AUX2(Cold water free contact) is on, but no humidistat kit connected or RH
is <70% with humidistat kit connected, fan speeds are 6 Auto. If RH>= 70%, fans speeds are
3
rd
-6
th
Auto(3
rd
+6
th
speeds).
Important note for master-slave configuration: if one slave included in the net required different mode
from master, machine remains in this state : AUX2(Cold water free contact) and AUX1(hot water free
contact) off , and fan stop . Display on board flash Mode fault E9.
7.4.2 Two-Pipes system with motorized valve ( 2 port valves and 3 way by pass valve ) ( on-off)
7.4.2.1 Cool mode
When unit is selected with heat only mode(PR1 setting), cool mode would be invalid.
1)
AUX1(Hot water free contact) is always off.
2) If Tr(Room air temperature) >= Ts(Setting tempe1ºC, cool operation is activated,
MTV1(Chilled water motorized valve) is turned on, and indoor fan runs at set speed, after 90 seconds,
AUX2(Cold water free contact) is On.
Note : 90 sec delay from AUX2 (Cold water free contact) and MTV1(Chilled water motorized valve)
is necessary because valve need 90 second to open and to close , and this is necessary to avoid pump
flow meter protection with 2 port valve.
3) If Tr(Room air temperature)< Ts(Setting temperature), cool operation is terminated, MTV1(Chilled
water motorized valve) and AUX2(Cold water free contact) are turned off. Indoor fan runs at set
speed.
4) The range of Ts is 16-30 ºC. If PR setting is activated, Ts range is same as PR setting.