White Rodgers CAZ-2 Zone Plus Control Panel 설치 설명서

Power Indicator LED

System Model Indicator LED

Purge Override

Button 

Boot Button

Adjustable Heating Limit

Adjustable Second

Stage Timer

RJ11 Connection

Sensor Terminals

Zone  Terminal Blocks for

Zone Damper Motors and

Zone Thermostats

24 VAC Transformer

Terminals

Re-Settable Fuse

HVAC Equipment Terminals

Zone Calling Indicators

Mode DIP Switches

Mounting Keyholes

Two at Top also

The CZ-4 basic function is zone control. On a call for heating or cool-

ing, the panel will accept the first call from any zone. Upon accepting

this call, the CZ-4 will open the damper(s) to the zone calling, close 

the damper(s) to those areas not calling, activate the needed HVAC 

controls for heating or cooling, whichever is being called and not ac-

cept any calls for the opposite mode.

Any calls for the opposite mode will be locked out until the initial mode

is either satisfied or a period of time has elapsed that is sufficient for

the first mode to satisfy, a maximum of 20 minutes. A Patent Pending

sequence determines the time the unit has been running or needs to

continue to run in order to adequately provide conditioning for each

mode. If a particular mode has already been calling for 20 minutes or 

longer and an opposite call comes in the CZ-4 will immediately drop 

the mode, enter the purge mode in order to dissipate the conditioned 

air into the zones calling before switching over to provide the new 

conditioning call to its zones.

When using the CZ-4 to control two stage heating and/or cooling, the 

second stage is controlled based upon time after the first stage call

from the thermostat. When any zone calls the panel’s built-in timer 

begins and after the set period of time elapses, the CZ-4 will also ac-

tivate the W3 for Heating or Y2 for Cooling. The Second Stage Timer 

is adjustable from 5 to 23 minutes after the first stage calls. Once the

second stage is on, it will continue to run until the first stage is satis-

fied or the limit setting is reached.

Once all zone thermostats are satisfied for heating and cooling, the

CZ-4 can now accept Fan calls allowing Continuous Air Circulation 

(CAC) in those zones where the thermostat’s Fan Switch is set to ON. 

These zone dampers will be Open while the dampers to the zones 

where the Fan Switch is set to AUTO will be CLOSED.

When all zone thermostats are satisfied for both Heating and Cooling

and all Fan switches are set to AUTO position, the HVAC unit will be 

off and all zone dampers will return to a normally open position. Once 

a zone calls for heating, cooling or fan, the dampers to the calling 

zones remain open and dampers to the zones not calling will close.

The CZ-4 is factory set for conventional fossil fuel (oil or gas) single or 

two stage heating and cooling. The panel only needs to be configured

when using with a conventional electric furnace or hydro-air system 

in order to bring the fan on with a call for heat, or when using with a 

heat pump.

Most all of the panel configuration is done by setting the DIP switches

in the lower center of the panel. Below is shown their setting and 

functions.

ON 
OFF 

7

8

1

2

3

4

5

6

1. 

HT PMP EQP – Heat Pump Equipment – This switch changes the

 output of the HVAC Equipment terminals from conventional Heat-

  ing and Cooling to a traditional Heat Pump Output. When OFF, a

  heat call activates the W1 output. When ON, a Heat call activates

  the Y1  output to bring on the compressor.

2. 

FAN IN HEAT – Activates the O output to turn the Fan on with a

  call for Heat. This is used for Heat Pumps, Electric Heat furnaces

  and Hydro-Air Systems. In the OFF position the CZ-4 will not

  activate the Fan in heating unless there is a fan call from one of 

  the zone thermostats.

3. 

STAT 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. 

STAT B TO W – Switch is used when using Heat Pump thermostats  

  that use a B terminal to activate the reversing valve in HEATING.  

  The B terminal 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.

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