Oppermann Regelgeräte KRM-X - Hydraulic diameter dh

KRM-X® Duct Smoke Detector
6 | 10 | Fire Protection | Data sheet No. 41350 | Version 01-2019
MIN 3xd
h
MIN 5xd
h
MIN 3xd
h
MIN 5xd
h
MIN 3xd
h
MIN 5xd
h
MIN 3xd
h
MIN 5xd
h
KRMKRMKRMKRMKRMKRMKRMKRM
KRM
KRM
KRM
KRM
KRM
KRM
KRM
KRM
MIN 5xd
h
MIN 3xd
h
MIN 5xd
h
MIN 5xd
h
MIN 3xd
h
MIN 3xd
h
MIN 5xd
h
MIN 5xd
h
MIN 3xd
h
Exhaust air
Supply air
Ventilator Airap Muer
Battery
Air duct device
Air duct narrowing/
air duct enlargement
Air duct forking
Change of
air duct direction
d
h
=
2xHxB
H+B
H
B
Rectangular duct
d
h
=D
øD
Round duct
Hydraulic diameter d
h
Example of positioning (recommendation)
air collecting tube, may not be installed along the longitudinal
edges of ventilation ducts (corner area). The KRM-X must be
installed such that the air collecting tube is constantly located in
the air stream. In horizontal ventilation ducts the KRM-X, includ-
ing the air collecting tube, should be installed in the upper third
of the ventilation duct or at the top of the ventilation duct, if this
is structurally possible.
If the positioning recommendations cannot be followed for
structural reasons, the KRM-X should be mounted such that
reliable smoke detection and airow are nonetheless ensured.
The blue airow LED serves as an airow indicator
(the LED is o with sucient ow).
Observe these instructions. All work (such as installation, electri-
cal connection, startup, operation, and maintenance) must only
be performed by suciently qualied tradesmen. The respec-
tively applicable local rules and regulations (e.g. national building
codes, electrical/VDE regulations, etc.) must be observed. Install-
ers and operating entities are required to suciently familiarize
themselves before startup. Read the product description before
operating the equipment. Verify that the product can be used
for the relevant application without restrictions. We are not liable
for printing errors and changes after printing. Appropriate use
implies compliance with operating and installation instructions.
We are not liable for losses due to inappropriate use. Unautho-
rized manipulations or modications of the device render the
operating permit, the product warranty and warranty claims null
and void.