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Model 8670 SUREFLOW Room Pressure Controller Manual - TSI

Model 8670 SUREFLOW Room Pressure Controller Manual - TSI

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ALARM RELAYS The ALARM RELAYS item is used to select whether the<br />

low, high, and no-flow relays latch in an alarm condition<br />

(LATCHED) or follow in an alarm condition<br />

(UNLATCHED). When the alarm latch is selected, the<br />

alarm relay contacts close in an alarm condition and remain<br />

closed until the room pressure returns to normal and the<br />

RESET key is pressed. When alarm follow (UNLATCHED)<br />

is selected, the alarm relay contacts close in an alarm<br />

condition and open when the room pressure returns to<br />

normal.<br />

ALARM LIGHT The ALARM LIGHT item is used to select whether the alarm<br />

light latches in an alarm condition (LATCHED) or follows<br />

in an alarm condition (UNLATCHED). The display will<br />

indicate the appropriate alarm as follows:<br />

ALARM=LOW<br />

ALARM=HIGH<br />

ALARM=NO-FLO<br />

The LOW, HIGH, and NO-FLO will be flashing on and off<br />

to raise attention to the alarm condition. When an alarm<br />

latch is selected, the Alarm light turns on and the display<br />

indicates the alarm. The Alarm light will remain on and the<br />

display will indicate the alarm condition until the room<br />

pressure returns to normal and the RESET key is pressed.<br />

When alarm follow (UNLATCHED) is selected the Alarm<br />

light turns on and the display indicates the appropriate alarm<br />

type until the room pressure returns to normal.<br />

AUD. ALARM The AUD. ALARM item is used to select whether the<br />

audible alarm latches in an alarm condition (LATCHED) or<br />

follows in an alarm condition (UNLATCHED). When alarm<br />

latch is selected, the audible alarm turns on in an alarm<br />

condition and remains on until the room pressure returns to<br />

normal and the RESET key is pressed. When alarm follow<br />

(UNLATCHED) is selected, the audible alarm turns on in an<br />

alarm condition and off when the room pressure returns to<br />

normal.<br />

AUD. DISABLE The AUD. DISABLE item is used to select whether the<br />

audible alarm can (ON) or cannot (OFF) be disabled from<br />

the keypad.<br />

NETWORK STAT The NETWORK STAT item is used to select the status of the<br />

RS-485 network. The status is either OFFLINE or ONLINE.<br />

If the RS-485 communication is being used, the NETWORK<br />

STAT must be selected as ONLINE.<br />

26 Chapter 6

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