Installation Instructions

Document No. 546-14400
Installation Instructions
February, 2004
Installation Instructions
NOTE: Follow all safety regulations and local
codes when installing this equipment.
1. Using the mounting rail as a template (Figure 1
or Figure 2), mark the screw holes where you
will install the LRC.
2. Do one of the following:
• If using self-tapping screws, fasten the
mounting rail using a drill and hex nut bit.
• If not using self-tapping screws, drill two 1/8-
inch (3 mm) pilot holes, then fasten the
mounting rail with No. 6 or No. 8 screws.
3. With the ESD wrist strap attached to your wrist
and a good earth ground, remove the controller
from the anti-static bag and snap it securely into
place on the mounting rail.
4. If the LRC will be used with a field panel,
disconnect the floor level network (FLN) trunk
from the field panel.
5. Wire the FLN trunk to the LRC (Figure 3). After
all controllers are connected to the FLN,
reconnect the FLN trunk to the field panel.
6. If the LRC requires Remote Air Modules, install
them now following the Installation Instructions
(550-819).
7. Connect the point wiring. See Figure 8 if the
LRC requires Remote Air Modules. See Figure 9
if the LRC has onboard AVS transducers.
NOTE: Each DO provides a Normally Open
(NO) and a Common (C) terminal.
Terminate both connections of a 24
Vac load directly to the board.
CAUTION:
The LRC DOs control 24 Vac loads
only. The maximum rating is 12 VA for
each DO. Use an interposing 220V
relay module for VA requirements
higher than the maximum, 110 or 220
Vac requirements, DC power
requirements, or whenever a separate
transformer is used to power the load.
546-14323 uses relay module 550-054.
550-767B uses relay module 540-147.
8. For each AO-E module, verify that the switches
are set as shown in Figure 4:
Standard Logic
Fail Last Position
Retract
Test
Analog
LRC/FHC Logic
Fail retracted
Extend
Norm
Digital
SW1
SW2
OFFON
4-20 mA
0-10 Vdc
TEC0284R1
5
4
3
2
1
Note: Switch selections are black; for example, SW1 = 0-10 Vdc.
Figure 4. Switch Settings for the AO-E Modules.
WARNING:
This actuator requires a maximum of 18 VA,
24 Vac source. DO NOT connect any other
non-isolated devices to the transformer that
powers the electronic actuator or the hot
water valve actuator.
NOTE: A three-wire power trunk must be run from
the transformer to the AO-E module. The ‘E’
terminal of connector block J1 must be
connected to ground (see Figures 8 and 9).
NOTE: The FFM, the FHC, any 0 to 10 Vdc actuator
used by the LRC, and the LRC cannot share
a single power trunk. The preferred
configuration for shared power trunks is one
trunk for the FFM and FHC and another
trunk for the actuator(s) and LRC. The Lab
Controls Electronic Actuator Assemblies can
be on the same power trunk as the FHC or
LRC or can be on a separate transformer.
9. Plug the room temperature sensor cable into the
RTS port on the controller (Figure 1 or Figure 2).
If CE compliance is required, a ferrite filter must
be installed on an approved 588-100 series
room temperature sensor cable. See Figure 11.
10. Connect a certified 24 Vac Class II power
source to the LRC’s power supply terminal block
by inserting a 1/8-inch flat blade screwdriver into
a rectangular slot on the terminal block (Figure
5). The screwdriver will come into contact with a
lever. Continue applying pressure until the lever
releases and moves out of the way. Insert the
wire and then remove the screwdriver.
The installation is complete.
LAB0108R1
1 - 1/4
(32)
15/16
(24)
1 - 3/8
(34)
DIMENSIONS IN INCHES
MILLIMETERS IN PARENTHESES
Figure 5. Terminal Block.
Siemens Building Technologies, Inc. Page 3 of 7