Chapter Two: Installation Product Location and Re
uirements
23
Product Location and Requirements
Ambient Operating Temperature
The acceptable ambient operating temperature range for the 1249 unit is 0° to 50° C (32° to
122° F).
Power Requirements
The 1249 unit requires an external power supply of ±15 VDC ±5% @ 50 mA (excluding the
valve) or
a +24 VDC ±5% @ 50 mA (excluding the valve). The power is introduced to the unit
through the Interface connector located on the front of the unit. Refer to Table 6, page 27, for the
Interface connector pinout.
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