Siemens LCM-OAVS 570-804PA User manual

Installation Instructions
Document No. 570-114
October 26, 2016
LCM-OAVS Room Pressurization with,
Two Venturi Air Valves (One Exhaust,
One Supply) and HW Reheat (including
BTU Compensation)
Item No. 570-114 Rev. CA Page 1 of 8
Generic Controller I/O Layout. See Wiring Diagram for application specific details.
Control Applications
6750, 6756
Product Description
The Siemens Venturi Air Valve is a pre-packaged,
easy to install airflow measurement and control
solution. It provides stable and precise airflow
control of room supply, room general exhaust or
fume hood exhaust.
These instructions explain how to field install or
replace the BACnet Laboratory Controller Module
LCM.
This BACnet LCM-OAVS VAV Room Pressurization
Controller with HW Reheat and Two Fast-acting
Venturi Air Valves —One Exhaust, One Supply
features VAV control of a laboratory room with one
supply duct, one exhaust duct, and up to six Fume
Hoods. It uses fast-acting electronic actuators
(shipped separately) to control the supply and
exhaust Venturi air valves.
This controller is built on a BACnet Programmable
TEC (PTEC) platform that supports up to two
Offboard AVS signals; however, Onboard AVS
transducers are not supported. Offboard Air
Module(s) (OAM) house AVS transducers and send
signals to the AVS input(s) on the LCM OAVS
board.
The LCM can operate stand-alone, with a field
panel, or as part of a network.
Product Numbers
See the Venturi Air Valve for Critical Environments
Technical Specification Sheet (149-425) or
Configuration and Sizing in the Critical Environments
section of InfoLink.
BACnet LCM-OAVS with HW Reheat
and Two Venturi Air Valves —One
Exhaust, One Supply Applications 6750
(RTS) 6756 (BTU)
This controller requires Offboard Air
Module(s) (ordered and shipped
separately
570-804PA

Document No. 570-114
Installation Instructions
October 26, 2016
Page 2 of 8Siemens Industry, Inc.
Offboard Air Module –two required,
order separately
550-819B
Siemens fast-acting Lab Electronic
Actuator(s) –order and ship separately)
GNP191.1U
Shipping carton includes a controller assembly, a
mounting rail, and two self-tapping/drilling screws.
CAUTION
Keep the unit in its static-proof bag
until installation.
Otherwise, you run the risk of
damage to the printed circuit board
from electrostatic discharge.
Accessories
Low cost temporary temperature
sensor, 10K Ω thermistor with
RJ11 (1” long), that enables space
control if the permanent room or
duct sensor is not installed (pack of
25).
540-658P25
Duct Temperature Sensor, NTC
10K Ω Type 2, 3" Probe for
Commissioning only.
QAM1030.008P50
Warning/Caution Notation
WARNING
Personal injury/loss of life may
occur if you do not follow the
procedures as specified.
CAUTION
Equipment damage or loss of data
may occur if you do not follow the
procedures as specified.
Required Tools and Equipment
Small flat blade screwdriver
3/8-inch open end wrench
Needle nose pliers
1/4-inch poly tubing
Prerequisites
Wiring conforms to NEC and local codes and
regulations. For further information, see the
Wiring Guidelines Manual (125-3002).
 (Optional) Room temperature sensor installed.
24 Vac Class 2 power available.
Supply power to the unit is OFF.
Any application specific hardware or devices
installed.
NOTE:
A low-cost temporary RTS (540-658P25)
is available that plugs into the RTS port
on the controller, providing temperature
input and actual space control until a
permanent RTS is installed.
Expected Installation Time
30 minutes
Installation Instructions
NOTE:
All wiring must conform to national and
local codes and regulations (NEC, CE,
and so on).
1. Secure the mounting rail in the controller’s
desired location.
2. Place the ESD wrist strap on your wrist and
attach it to a good earth ground.
3. Remove the controller from the static proof bag
and snap it into place on the mounting rail.
4. If the controller will be used with a field panel,
disconnect the field level network (FLN) trunk
from the field panel.
5. Wire the FLN trunk to the controller. After all
controllers are connected to the FLN, reconnect
the FLN trunk to the field panel.

Document No. 570-114
Installation Instructions
October 26, 2016
Siemens Industry, Inc. Page 3 of 8
6. If the controller requires Offboard Air Modules,
install them now following the appropriate
Installation Instructions (see Product Numbers ).
7. Connect the point wiring (see Wiring Diagram s).
CAUTION
DO Wiring –Each DO provides a
Normally Open (NO) terminal and a
Common (C) terminal.
To reduce noise and the potential
for ground loops, both connections
of a 24 Vac load must be wired
directly to the DO terminal on the
controller board.
CAUTION
The fume hood flow module, the
FHC, any 0 to 10 Vdc actuator used
by the LCM, and the LCM cannot
share a single power trunk.
The preferred configuration for
shared power trunks is to use one
trunk for the FFM and FHC and
another trunk for the actuator(s) and
LCM.
8.
For each Fast Acting Lab Electronic Actuator,
verify that the switches are set as shown in
Figure Switch Settings for the Fast Acting
Lab Electronic Actuator .
Supply
Exhaust
Switch Settings for the Fast Acting Lab Electronic
Actuator.
CAUTION
This actuator requires a maximum
of 20 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.
9.
Plug the room temperature sensor cable into
the RTS port.
10.
Connect the power trunk. DO NOT apply
power to the controller without first consulting
the specialist.
CAUTION
It is important that the neutral that
supplies the TEC must be earth
grounded at the source of the 24
Vac power.
Possible erratic equipment
operation or damage if neutral is not
grounded.
The installation is complete.
Dimensions.

Document No. 570-114
Installation Instructions
October 26, 2016
Page 4 of 8Siemens Industry, Inc.
Wiring Diagrams
Offboard Air Module Wiring.
CAUTION
The LCM-OAVS has two terminal
blocks with terminations numbered
identically (terminations 1 through
16). DO NOT get these mixed up
with each other.
If the LCM-OAVS is not connected
as shown, it is not resistant to
electrical surges. It is also
susceptible to interference from
other equipment.
CAUTION
A separate power supply is required
if a 4-20 mA sensor is used.
Failure to follow wiring precautions
will result in equipment damage.
Wiring for AI with a 4 to 20 mA Sensor.
CAUTION
Each 4-20 mA sensor requires a
SEPARATE dedicated power limited
24 Vdc power supply.
DO NOT use the same transformer
to power both the sensor and the
controller.
NOTE:
If the voltage/current switch is set to
current and a 4 to 20 mA sensor is
connected to an AI, then special wiring
requirements must be followed.
NOTE:
When wiring any actuator that uses a 0 to
10V control signal and ties AC neutral to DC
common, an additional wire must connect
the actuator AC neutral to the DC common
of the PTEC/TEC AO being used to control
the actuator.
24 Vac Modulating Control.

Document No. 570-114
Installation Instructions
October 26, 2016
Siemens Industry, Inc. Page 5 of 8
Actuator
Symbol
TEC
Connection
Function
Terminal
Connection
Standard
Color
1
H
Supply (SP)
G
Red
2
C
Neutral (SN)
G0
Black
8
AO3 –15
(+)
0 to 10V
input signal
Y
Gray
--
C to AO3
16 (-)
Common
jumper
--
--
NOTE:
The controller’s DOs control 24 Vac
loads only. The maximum rating is 12 VA
for each DO. An external interposing
relay is required for any of the following:
• VA requirements higher than the
maximum
• 110 or 220 Vac requirements
• DC power requirements
• Separate transformers used to power
the load
(for example, part number 540-147,
Terminal Equipment Controller Relay
Module)
NOTE:
Thermistor inputs are 10K (default) or
100K software selectable (AI X ).

Document No. 570-114
Installation Instructions
October 26, 2016
Page 6 of 8Siemens Industry, Inc.
BACnet LCM-OAVS with Hot Water Reheat and Two Venturi Air Valves (One Exhaust, One Supply) -- Application 6750 Wiring
Diagram.

Document No. 570-114
Installation Instructions
October 26, 2016
Siemens Industry, Inc. Page 7 of 8
BACnet LCM-OAVS with Hot Water Reheat, BTU Compensation, Two Venturi Air Valves (One Exhaust, One Supply) --
Application 6756 Wiring Diagram.

Document No. 570-114
Installation Instructions
October 26, 2016
Information in this document is based on specifications believed correct at the time of publication. The right is reserved to make changes as
design improvements are introduced. Product or company names mentioned herein may be the trademarks of their respective owners. ©
2016 Siemens Industry, Inc.
Siemens Industry, Inc.
Building Technologies Division
1000 Deerfield Parkway
Buffalo Grove, IL 60089-4513
USA
Tel. 1 + 847-215-1000
Your feedback is important to us. If you have
comments about this document, please send them
to [e-mail].
Document No.570-114
Printed in the USA
Page 8 of 8
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