# AIR COND / PNEUMATIC

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![](https://cdn.document360.io/417c2d4d-fdb8-4d4d-b11d-011fe445d776/Images/Documentation/air-cond--pneumatic-panel-image-5zs8xlp6.png)

### RECIRC BUTTON <a href="#toc118376453" id="toc118376453"></a>

**PUSH IN:** Allows automatic operation by the AMS. Turns on both recirculation fans, according to system logic.

**PUSH OUT:** Turns off both recirculation fans.

### PACK (1) (2) BUTTON <a href="#toc118376454" id="toc118376454"></a>

**PUSH IN:** Allows automatic operation by the AMS. Opens the respective pack flow control valve.

**PUSH OUT:** Manually closes the respective pack flow control valve.

<mark style="color:red;">NOTE: During first engine start, Emergency Ram Air Valve Built-In Test (BIT) commands PACK 1 OFF.</mark>

### BLEED (1) (2) BUTTON <a href="#toc118376455" id="toc118376455"></a>

**PUSH IN:** Allows automatic operation by the AMS. Commands the respective engine bleed valves, according to system logic.

**PUSH OUT:** Manually closes the engine bleed valves.

![](https://cdn.document360.io/417c2d4d-fdb8-4d4d-b11d-011fe445d776/Images/Documentation/air-cond--pneumatic-panel-image-gubgukq7.png)

### CKPT TEMPERATURE SELECTOR <a href="#toc118376456" id="toc118376456"></a>

Controls cockpit temperature relative to the knob position.

### PAX CABIN TEMPERATURE SELECTOR <a href="#toc118376457" id="toc118376457"></a>

Controls passenger cabin temperature relative to the knob position.

<mark style="color:red;">**ATTND position:**</mark> <mark style="color:red;"></mark><mark style="color:red;">Enables the flight attendant panel(s) to control the cabin temperature. An “ENABLED” led turns on in the flight attendant panel(s) indicating they have control of the temperature.</mark>

### XBLEED BUTTON <a href="#toc118376458" id="toc118376458"></a>

**PUSH IN:** Allows automatic operation by the AMS. This position opens the cross-bleed valve, according to system logic.

**PUSH OUT**: Manually closes the cross-bleed valve.

### BLEED APU BUTTON <a href="#toc118376459" id="toc118376459"></a>

**PUSH IN:** Allows automatic operation by the AMS. Commands the APU bleed valve, according to system logic.

**PUSH OUT:** Closes the APU bleed valve.