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User’s manual of recovery vent
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r-W-450
Control
Frost Protect�on Funct�on
Condensat�on occurs �ns�de the un�t where outdoor a�r temperature �s below 0°C. Heat changer can be damaged �f condensat�on
water freezes �ns�de. Control board changes fan speed per�od�cally to protect freez�ng.
Note:
Th�s funct�on �s act�ve when outdoor a�r temperature �s below -3°C. Set temperature value �s changeable.
Pre-Heater Funct�on
Th�s funct�on helps to protect un�t from freeze�ng where outdoor a�r temperature �s too low. It runs due to outdoor a�r temperature.
1 step electr�c heater can be controlled.
Note
: To act�vate th�s funct�on, turn “d�p sw�tch 2” on.
Heat�ng Co�l Funct�on (Opt�onal)
Th�s funct�on �s used �n un�ts wh�ch have duct type hot water co�ls. It controls the hot water co�l wh�ch helps to �ncrease supply a�r
temperature and works due to set and return a�r temperature. It can control 230V on/off valve connected to water co�l.
Note
: To act�vate th�s funct�on, follow�ng must be appl�ed:
-Turn electr�c heater funct�on on. (Turn d�p sw�tch 1 on)
-Make short cut �n between HT_Fault and HT_P_Fault �nputs.
-Connect 230V on/off valve to 1.step electr�c heater control cable ends.
Cool�ng Co�l Funct�on (Opt�onal)
Th�s funct�on �s used �n un�ts wh�ch have duct type cold water co�ls. It controls the cold water co�l wh�ch helps to decrease supply
a�r temperature and works due to set and return a�r temperature. It can control 230V on/off valve connected to water co�l.
Note
: To act�vate th�s funct�on, follow�ng must be appl�ed:
-Turn electr�c heater funct�on on. (Turn d�p sw�tch 1 on).
-Act�vate “Cool�ng Co�l” on un�t sett�ngs (Th�s can be done by author�zed techn�cal serv�ce or default �n factory).
-Make short cut �n between HT_Fault and HT_P_Fault �nputs.
-Connect 230V on/off valve to 2.step electr�c heater control cable ends.
Note
: Th�s funct�on �s act�ve when outdoor a�r temperature �s below 0°C. Set temperature value �s changeable. When connect�ng
an after-heatr or pre-heater, the HT_FAULT or HT_P_FAUL should be br�dged respect�vely (one not used)
Boost funct�on
Th�s funct�on �s used when large amount of exhaust and fresh a�r �s needed (at the t�me of us�ng k�tchen/bathroom/wc, etc.) wh�le
vent�lat�on �s st�ll go�ng on. There are 2 boost funct�ons on controller. One of them �s on control panel, the other one �s on
control board:
1. ,,Boost” funct�on �s act�vated by press�ng for 3 seconds. After un�t runs at boost speed (max�mum speed) and dur�ng
boost t�me (15 m�nutes) �t beg�ns to run at the speed value that �s set before boost funct�on �s act�vated.
2. There �s one dry contact relay �nput (BOOST) and one 230V �nput (BOOST-AC) on control board. If one of these �nputs �s act�va
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ted, un�t beg�ns to run at ,,Boost” speed. When act�vated �nput �s pass�ve aga�n, un�t beg�ns to run at the speed value that �s set
before boost funct�on �s act�vated.
Note1
: Boost speed and boost t�me are changeable
Note2
: Dur�ng operat�ng at boost funct�on on Bas�c Panel, ,,H�gh” (H), ,,Med�um” (M) and ,,Low” (L) speed leds are on at the
same t�me.
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