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FORM 2045-2 1306                                            ©2013 White-Rodgers by Permission

                                                                      37-6864B

 

 

 

                     

 

 

Model

 

CZ-4

  

 
 
 

 

 
 
 
 

Installation and Operating Instructions 

 

 

                             
 

 
 
 
                                                                                                                 

Содержание CZ-4

Страница 1: ...FORM 2045 2 1306 2013 White Rodgers by Permission 37 6864B Model CZ 4 Installation and Operating Instructions ...

Страница 2: ...e by pulling firmly and separating the cover from the case exposing the circuit board There are 4 key hole mounting points in each corner of the case The case has openings in the rear of the case as well as the side for all wiring Wiring can come from the back as well as the side in order to make a neat installation OPERATION The CZ 4 can control various types of HVAC Equipment all from the same p...

Страница 3: ...3 O TO W Switch is placed to ON when using Heat Pump thermostats that use an O terminal to activate the reversing valve in COOLING The O on the thermostat is wired to W on the zone terminal in order to determine if the call is for heating or cooling All zone thermostats must operate and be wired the same way 4 B TO W Switch is used when using Heat Pump thermostats that use a B terminal to activate...

Страница 4: ...time the unit has already been supplying the first mode in order to determine how long it will hold off the opposite call If an opposite call is made shortly after the first call the opposite call may be held off for as much as 20 minutes If the first call or subsequent calls for the first call mode has had that mode operating for up to 20 minutes already and an opposite call comes in after 20 min...

Страница 5: ... all cases eliminate the problem If not the following procedure can help isolate the problem Zone s Not Calling Each zone has a Green LED next to the zone relay when it is calling and that calling is being recognized by the CZ 4 If a zone is supposed to be calling and the Zone LED is not on check for 24VAC across the thermostat terminal C and the Y if a Cool call W if a Heat Call or G if a Fan cal...

Страница 6: ... G Y R W O B C CLOSE OPEN COM ZONE CONNECTIONS THERMOSTAT DAMPER Single Stage Thermostat ON OFF HEAT PUMP EQUIP FAN ON IN HEAT STAT O TO W STAT B TO W FAN IN PURGE EMERGENCY HEAT STAGE TIME ZONE CTRL 3 1 2 3 4 5 6 7 8 W2 W1 Y1 Y2 O G E B R First Stage Cooling Relay 24V Transformer Second Stage Cooling Relay First Stage Heat Relay Fan Relay EQUIPMENT HEATING COOLING EQUIPMENT Second Stage Heat Rela...

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