CALECTRO UG-7-A6O-24V Installation And Maintenance Manual - Page 9

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Figure 16B

[7.3] METHOD 3 : AIR VELOCITY GREATER THAN 500 FPM:

First, verify the air speed is greater than 500 feet per minute by using the measurement method described in

method 1 above. With the air handler turned on, use a manometer to measure the differential pressure across the

inlet port and outlet ports of the sampling tube, this measurement shall be verified to be between 0.0028 to 1.49

inches of water. Please ensure that the end of the tube is completely sealed by use of a plug, or a duct tape in

order to obtain proper measurements.

[8] DETECTOR CONDITION INDICATION

Detector condition is indicated by the detector LED, and the corresponding LEDs on the power board. The

power board has four separate LEDs to indicate the status of the detector. Refer to Table 8.1 for more details.

Table 8.1

Status

Description

Standby

Detector in normal

operation

Maintenance

Fixed LED 3: detector is

removed

Flashing LED 3:

detector is contaminated

Alarm

Detector detects smoke

Trouble

Power failure

Linked alarm

AUX relays are in alarm

from other

mode due to smoke

UG-7-A6O

alarm from linked UG-7-

A6O

UG-7-A6O Installation manual

HFE716 Version: 14

Detector

Power board LED

LED: red

number

Green

Yellow

Off

Status of relays

Terminals

Yellow

Red

open

9-10

11-12

14-15

7-8

9-10

11-12

14-15

12-13

15-16

Off

7-8

9-10

12-13

15-16

9-10

12-13

15-16

Date: 2014-03-24

Terminals

closed

7-8

12-13

15-16

12-13

15-16

7-8

9-10

11-12

14-15

11-12

14-15

7-8

11-12

14-15

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