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

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ZYMBO AATT
Ventilarredo Service Manual – English Pag. 74
11) If Tr(Room air temperature) < Ts(Setting temperature)-2 ºC, heat operation is activated, AUX1(hot
water free contact) is on after 90 second, and 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 remain 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.
7.4.3 Four-pipes system
System always equipped with 2 valves (4x2 Watt -3 Way by-pass patented )
7.4.3.1 Cool mode
When unit is selected with heat only mode(PR1 setting), cool mode would be invalid.
1) MTV2(Hot water motorized valve), AUX1(Hot water free contact) and heater always off.
2) If Tr(Room air temperature) ≥ Ts(Setting tempe1ºC , cool operation is activated,
MTV1(Chilled water motorized valve) and AUX2(Cold water free contact) are turned on. Indoor fan
runs at set speed.
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
5) Indoor fan speed can be adjusted with 6 Auto when no humidistat kit connected, or RH is
<70% with humidistat kit connected.
6) If RH is >=70% with humidistat kit connected, indoor fan would work with 3
rd
-6
th
Auto (3
rd
speed is the min speed).
7) When turned on, MTV1(Chilled water motorized valve) requires 90 seconds before it is fully open.
8) When turned off, MTV1(Chilled water motorized valve) requires 90 seconds before it is fully closed.
9) When the unit is turned off, indoor fan will delay for 5 seconds before it is turned off.
Anti-hot air setting in cooling mode
1) AUX1(Hot water free contact) always off.
2) If Til(Chilled water coil temperature exchanger temperature) >15 ºC
（
or depend from PR5 setting
）
,
indoor fan remains off. If Til could not reach 15 ºC for 40 minutes(or PR12 setting), LCD would
display error code: E6.
3) If Til(Chilled water coil temperature exchanger temperature)
≦
15 ºC (or depend from PR5 setting)
for 2 minutes, indoor fan works as setting speed.
Low temperature protection of indoor coil
1) If Ti1(Chilled water coil temperature)
≦
2 ºC for 2 minutes, MTV1(Chilled water motorized valve)
and AUX2(Cold water free contact) are turned off. Indoor fan runs at Max speed.
2) LCD display E7.