Sensor Installation; General - Honeywell 5704 Operating Instructions Manual

MAN0448_Issue 13_01-2010
005704-M-5001 A03249
CHAPTER 4 - INSTAllATION INSTRUCTIONS
(1) Insert the rack into the 19" Mounting Frame and secure using M6
or similar bolts through the four mounting holes located on the front
flange plates.
(2) Ensure adequate support at the rear of rear access racks.
(3) Prepare and connect the cable ends to Quad Relay Interface and
Expansion Relay Card terminals. For terminal identification see
Chapter 2. Where possible keep sensor cables separate from the
other wiring.
(4) Ensure that the rack is properly earthed by connecting a suitable
earth cable to the earth stud located at the rear of the rack.
Do not apply power to the System 57 until the commissioning
procedure has been read and understood. See Chapter 5.
11.

SENSOR INSTAllATION

11.1

General

Always install the sensors in accordance with the Sensor Operating
Instructions.
In general, sensors for lighter than air gasses should be located at a
high level and sensors for heavier than air gasses should be located
at a low level.
Do not install the sensors:
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 sensors:
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.
CAUTION
4-15
5704 Control System