511391 201T User Manual 13
2/07 Honeywell
Wall-mount Installation
Wall-mount Installation
Installation of the monitor simply requires the physical mounting of the
enclosure and connection of the power and output lines.
* May differ in certain applications. Hot NO
2
from exhaust systems is
lighter than ambient air.
Note: The installation heights recommended by Honeywell represent
general guidelines. Always confirm with local laws and
regulations before proceeding, as these take precedence over
manufacturer's recommendations.
Detected Gas
Relative
Density
(air = 1)
Installation Height
C
2
H
4
O
Ethylene oxide 1.50 1 ft. (30 cm) from floor
CL
2
Chlorine 2.50 1 ft. (30 cm) from floor
CO Carbon monoxide 0.968 3 - 5 ft. (1 - 1.5 m) from floor
H
2
S
Hydrogen sulfide 1.19 1 ft. (30 cm) from floor
H
2
Hydrogen 0.07 1 ft. (30 cm) from ceiling
HCL Hydrogen chloride 1.30 1 ft. (30 cm) from floor
HCN Hydrogen cyanide 0.932 1 ft. (30 cm) from ceiling
NO Nitrogen monoxide 1.04 1 ft. (30 cm) from floor
NO
2
Nitrogen dioxide 1.58 (*cold) 1 - 3 ft. (30 cm to 1 m) from ceiling
O
2
Oxygen 1.43 3 - 5 ft. (1 - 1.5 m) from floor
SO
2
Sulfur dioxide 2.25 1 ft. (30 cm) from floor
R11
Refrigerants
5.04
1 ft. (30 cm) from floor
R12 4.20
R22 3.11
R134A 3.52
COMB
Most combustibles are heavier than air, with the exception of methane, hydro
gen,ethylene and acetylene. For gases that are heavier than air, sensors should
be installed approximately 30 cm (1 ft.) from the floor. For combustibles that are
lighter than air, sensors should be installed 30 cm (1 ft.) from the ceiling, close
to the potential leak source.
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