Siemens 546-00303A User manual

Installation Instructions
Document No. 546-00310
November 15, 2006
Fume Hood Monitor
Page 1 of 6
Product Description
The Fume Hood Monitor (FHM) (Figure 1) provides
visual and audible alarms to alert a fume hood user
of airflow conditions. The mounting plate is designed
for fume hoods with or without existing cutouts. This
kit contains:
•Fume Hood Monitor with mounting plate
•Three removable wire connectors
•Four sheet metal screws
•Two machine screws
•2 ft. (0.6 m) air sensor hose
•Plastic sidewall adapter and lock ring
Product Numbers
546-00303A Fume Hood Monitor
546-00303B Fume Hood Monitor mounting plate
Warning/Caution Notations
CAUTION: Equipment damage or loss of
data may occur if the user
does not follow procedure as
specified.
Required Tools
For a fume hood with an existing cutout:
•Medium-duty electric drill
•1/2-inch. (13.0 mm) drill bit
•Small flat-blade screwdriver
•Small Philips screwdriver
•Wire strippers
For a fume hood without an existing cutout:
•Medium-duty electric drill
•1/8-inch (3.0 mm) drill bit
•1/2-inch (13.0 mm) drill bit
•Metal-cutting saw or 3/ 4 in. and 1 in. drill bits
or hole saws
•Small flat-blade screwdriver
•Small Philips screwdriver
•Wire strippers
Expected Installation Time
27 minutes
Prerequisites
•Power cable in place
If using a field panel:
•Floor Level Network (FLN) cable from the
field panel to the FHM in place
If using an external alarm or auxiliary DI
connection:
•External alarm or auxiliary DI cable from
source to FHM in place
Figure 1. Fume Hood Monitor.
Instructions
NOTE: Mount the FHM so that the fume hood
operator can easily read its display and
can easily reach its buttons. This height is
approximately 4-1/2 ft. to 5 ft.
(1.4 to 1.5 m) from the floor.
1. Choose the mounting location for the FHM. The
FHM should be mounted directly on the fume
hood and can be mounted over a pre-existing
cutout on the fume hood. See Figure 2 for
installation clearance requirements.

Document No. 546-00310
Installations Instructions
November 15, 2006
Figure 2. Installation Clearance Requirements.
NOTE: Clearance is needed to prevent the sensor
air hose from bending or kinking, and to
insert the Portable Operator’s Terminal
Cable.
2. Confirm that an earth ground is connected to the
mounting plate. To do this, make sure that the
following conditions are met:
a. The conduit junction box is grounded, or
b. The fume hood enclosure is grounded, or
c. A separate wire is connected between the
earth ground and the mounting plate.
3. Continue with one of the following mounting
methods: Mounting Plate Installation with an
Existing Cutout or Mounting Plate Installation
without an Existing Cutout.
Mounting Plate Installation with an
Existing Cutout
1. See Figure 3. If the fume hood is provided with a
2 inch ×4 inch (5.0 ×10.0 cm) cutout with an
electric utility box, then use the provided
machine screws to attach the mounting plate to
the electric utility and skip to Sidewall Hole
Mounting.
If the fume hood has no electric utility box,
make sure that the cutout provides enough
clearance for the air sensor hose and to
connect the power, FLN, external alarm, and
auxiliary DI wires. Then continue to Step 2.
Figure 3. Installation with an Existing Cutout.
2. Position the bracket over the opening and mark
the locations of the two mounting holes.
3. Using the 1/8-inch (3.0 mm) drill bit, drill the two
mounting holes.
4. Using the screws provided, attach the mounting
plate to the mounting surface.
5. Proceed to Sidewall Hose Mounting.
Page 2 of 6 Siemens Building Technologies, Inc.

Document No. 546-00310
Installations Instructions
November 15, 2006
Mounting Plate Installation without an
Existing Cutout
Use one of the following methods: Using a drill or
Using a metal-cutting saw for cutting the mounting
hole depending on the tools available.
Using a drill:
1. See Figure 8. Use this diagram to locate the
holes from the corner of the case. Do not use
the corner of the mounting plate as the
reference point. Mark the locations on the fume
hood.
2. See Figure 4. Using the mounting plate as a
template, mark the locations of the two mounting
holes.
3. Drill the required holes using the locations and
sizes shown in Figure 8.
NOTE: If FLN or AUX connections are not
required for installation, then only
drill holes for the air tube and power.
4. Using a 1/8-inch (3.0 mm) bit, drill the two
mounting holes.
5. Using the screws provided, attach the mounting
plate to the mounting surface.
Using a metal-cutting saw:
1. See Figure 9. Use this diagram to locate the
rectangular cutout from the corner of the case.
Do not use the corner of the mounting plate as
the reference point.
2. Using the mounting plate as a template, mark
the locations of the two mounting holes and the
2 inch ×3 inch (5.0 ×8.0 cm) cutout.
See Figure 4.
Figure 4. Installation without an Existing Cutout.
3. Using a metal-cutting saw or other suitable tool,
remove the marked rectangular area.
4. Using a 1/8-inch (3.0 mm) bit, drill the two
mounting holes.
5. Using the screws provided, attach the mounting
plate to the mounting surface.
6. Proceed to Sidewall Hose Mounting.
Sidewall Hose Mounting:
NOTE: The location of the sidewall adapter greatly
affects the performance of the Fume Hood
Monitor. Use the FHM Hood Evaluation
Kit, part number 546-00320, to accurately
determine the location for the sidewall
adapter.
1. Mark the location of the hole for the air sensor
hose 3 inches (7.5 cm) above the highest sash
opening and 6 to 8 inches (15.0 to 20.0 cm)
back from the sash track.
NOTE: The hole location for the air sensor
may vary slightly due to hood
construction. On fume hoods with a
mechanical stop, do not use the
mechanical stop as a reference
point. Use the highest possible open
position of the sash as the reference
point.
2. At the mark found in step 1, drill a 1/2- inch
(13.0 mm) hole in the sidewall of the fume hood.
CAUTION:
If the construction of the fume hood
contains fiber-cement panels, then use
diamond core drill bits to drill holes inside
the fume hood. Fiber-cement panels are
used for impact, moisture, and fire
resistant applications. Diamond core drill
bits are designed for hard and abrasive
materials. Standard drill bits may crack and
damage fiber-cement panels.
Siemens Building Technologies, Inc. Page 3 of 6

Document No. 546-00310
Installations Instructions
November 15, 2006
Page 4 of 6 Siemens Building Technologies, Inc.
3. Insert the plastic sidewall adapter (provided)
through the hole from the inside of the hood wall
and lock it in place from the outside with the
plastic lock ring (provided). See Figure 5.
4. Using a screwdriver and the two-position
removable wire connector (provided), connect
the power wires to the removable wire connector
as shown in Figure 7.
(Steps 5 and 6 are optional)
5. If using a field panel: Use the wire strippers,
and remove 1/4- inch (6.35 mm) of insulation
from the ends of the FLN trunk wires.
Using a screwdriver, terminate the wires from
the field panel to the three-position removable
wire connector. See Figure 7.
Figure 5. Installing the Plastic Sidewall Adapter
and Plastic Lock Ring.
4. Cut the air sensor hose (provided) to fit between
the sidewall adapter and the FHM. Leave
enough slack so that when the hose is installed,
no kinks are created.
5. Carefully insert one end of the air sensor hose
onto the end of the plastic sidewall adapter and
insert the other end through the hole in the
mounting plate.
Hose and Wire Connections:
1. Insert the end of the air sensor hose onto the air
sensor connection on the back of the FHM. See
Figure 6.
Figure 7. Location of Wire Receptacles.
6. If using the auxiliary DI(s) or an external
alarm: Use the wire strippers, and remove
1/4-inch (6.35 mm) of insulation from the ends of
the auxiliary or external alarm wires.
Using a screwdriver, terminate the wires from
the DI or external alarm to the four-position
removable wire connector. See Figure 7.
7. Securely insert all wire connectors into their
appropriate receptacles. Leave all unused wire
connectors in their mounting receptacles.
8. Place the FHM onto the mounting bracket, being
careful not to kink the air sensor hose or wires.
Figure 6. Wiring and Hose Connections. 9. To secure the FHM to the fume hood, tighten the
screws at the top and bottom tabs of the
mounting plate.
2. Insert all wires that will be terminated to the
FHM through the hole in the mounting plate.
3. Using the wire strippers, remove 1/4-inch
(0.5 cm) of insulation from the ends of the power
wires.
The installation is now complete.

Document No. 546-00310
Installations Instructions
November 15, 2006
Siemens Building Technologies, Inc. Page 5 of 6
Figure 8. Full Size Template: Location of Holes for Using a Drill.

Document No. 546-00310
Installations Instructions
November 15, 2006
Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models
as design improvements are introduced. © 2000 Siemens Building Technologies, Inc.
Siemens Building Technologies, Inc.
Landis & Staefa Division
1000 Deerfield Parkway
Buffalo Grove, IL 60089-4513
U.S.A.
Document No.: 546-00310 Printed in the U.S.A.
Page 6 of 6
Figure 9. Full Size Template: Location of Hole for Using a Metal-Cutting Saw.