PAC-UNIV-HE20-F-1M Weidmuller

1. Not designed or certified for use in hazardous areas. 

2. Designed for indoor use only. 

3. Not to be exposed to rain or moisture. 

CAUTIONS 

1. Use only approved parts and accessories with the System 57 control 

system. 

2. To maintain safety standards, regular maintenance, calibration and 

operation of the System 57 control system by qualified personnel is 

essential. 

IMPORTANT NOTICES 

1. Honeywell Analytics can take no responsibility for installation and/or 

use of its equipment if this is not done in accordance with the 

appropriate issue and/or amendment of the manual. 

2. The user of this manual should ensure that it is appropriate in all 

details to the exact equipment to be installed and/or operated. If in 

doubt, the user should contact Honeywell Analytics for advice. 

Always install the detectors in accordance with the Detector Operating Instructions. In 

general, detectors for lighter than air gasses should be located at a high level and detectors 

for heavier than air gasses should be located at a low level. 

Do not install the detectors: 

a. Where the normal air flow may be impeded. 

b. In corners of rooms where static air pockets may exist. 

c. Near sources of heat such as convector heaters. 

Do install the detectors: 

a. As close as possible to the potential source of gas to be detected in order to give the 

maximum possible warning. 

b. So that they are accessible for maintenance work.

System 57 interface cards use a common card with differing numbers of terminal blocks 

fitted according to which type of card it is. The picture below illustrates a card with the 

maximum number of terminals fitted. The tables show the terminal connections for 5701, 

5704 gas and 5704 fire interface cards.

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