Installation Instructions

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Document No. 546-14407

August 14, 2013

LCM-OAVS VAV Room Pressurization with BTU

Compensation, HW Reheat and Fast Damper

Actuation (One Exhaust, One Supply)

Item No. 546-14407, Rev. EA Page 1 of 6

WARNING:

LCM-OAVS will be damaged/destroyed if

offboard Air Module(s) are not wired

correctly. For more information, see the

Wiring Diagrams section.

Product Description

This Lab Controller Module (LCM) 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 to control the supply

and general exhaust dampers, and can operate

stand-alone, with a field panel, or networked.

This LCM is built on an OAVS board (Offboard AVS)

and has no air velocity transducers on the board.

Instead it has inputs for up to two AVS signals.

Offboard Air Module(s) house AVS transducer(s)

and send signal(s) to the AVS input(s) on the LCM

OAVS board.

Shipping carton contains a controller assembly

(controller board and cover), a mounting rail, and

two self-tapping screws.

NOTE: Keep the controller in its static-proof bag

until installation.

Product Numbers

Product Description

550-767E

LCM-OAVS — with HW Reheat and Fast

Damper Actuation — One Exhaust, One

Supply

Control Applications 2621 (and 2627 with

BTU Compensation)

Requires Offboard Air Module(s) order and

ship separately

550-818B

Offboard Air Module (OAM) – order

separately

GNP191.1U Siemens Industry fast-acting electronic

actuator – order and ship separately

Warning/Caution Notations

WARNING

Personal injury or 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 procedure as specified.

Required Tools

• Electro-Static Discharge (ESD) wrist strap

• Small and medium flat-blade screwdrivers

• Electric drill

• 1/4-inch (6.35 mm) hex nut bit

Additional tools if not using self-tapping option:

• 1/4-inch nut driver

• 1/8-inch (3 mm) bit

Prerequisites

• Wiring conforms to NEC and local codes

and regulations.

• Field level network (FLN) with 24-volt wiring.

• Supply power to the unit is OFF.

• Any necessary hardware installed: terminal

unit, actuator(s), sensor(s), etc.

• Room Temperature Sensor (RTS) installed

(optional). Note: A low-cost temporary RTS

(P/N 540-658P25) is available that plugs into

the RTS port on the LCM-OAVS, providing

temperature input and actual space control

until a permanent RTS is installed.

Expected Installation Time

New controller installation

10 min.

Replacement - removable terminal blocks

6 min.

Replacement without removable terminal

blocks

16 min.

NOTE: You may require additional time for

database work at the field panel.

Summary of content (6 pages)

PAGE 1
Installation Instructions Document No. 546-14407 August 14, 2013 LCM-OAVS VAV Room Pressurization with BTU Compensation, HW Reheat and Fast Damper Actuation (One Exhaust, One Supply) Warning/Caution Notations WARNING: LCM-OAVS will be damaged/destroyed if offboard Air Module(s) are not wired correctly. For more information, see the Wiring Diagrams section.
PAGE 2
Document No. 546-14407 Installation Instructions August 14, 2013 Figure 1. LCM-OAVS with BTU Compensation, HW Reheat and Two Fast Dampers (One Exhaust, One Supply). Installation Instructions NOTE: Follow all safety regulations and local codes when installing this equipment. 1. Using the mounting rail as a template (Figure 1), mark the screw holes where you will install the LCM-OAVS. 2. Do one of the following: • If using self-tapping screws, fasten the mounting rail using a drill and hex nut bit.
PAGE 3
Document No. 546-14407 Installation Instructions August 14, 2013 than the maximum, 110 or 220 Vac requirements, DC power requirements, or whenever a separate transformer is used to power the load (540-147). 8. For each Fast Acting Lab Electronic Actuator, verify that the switches are set as shown in Figure 3: Figure 4. Power trunk connection. Figure 3. Switch Setting for Fast Acting Lab Electronic Actuation. CAUTION: This actuator requires a maximum of 20 VA, 24 Vac source.
PAGE 4
Document No. 546-14407 Installation Instructions August 14, 2013 Wiring Diagrams WARNING: LCM-OAVS WILL BE DAMAGED / DESTROYED IF OFFBOARD AIR MODULE(S) ARE NOT WIRED CORRECTLY AND POWER IS APPLIED TO LCM-OAVS. 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. NOTE: For OAMs prior to 3/09 “O G P” is labeled as “S + -“.
PAGE 5
Document No. 546-14407 Installation Instructions August 14, 2013 Figure 7. Application 2621. Siemens Industry, Inc.
PAGE 6
Document No. 546-14407 Installation Instructions August 14, 2013 Figure 8. Application 2627 (with BTU Compensation). 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. APOGEE and Insight are registered trademarks of Siemens Industry, Inc. Other product or company names mentioned herein may be the trademarks of their respective owners. © 2013 Siemens Industry, Inc.