Installation Instructions

ManualsBrandsSiemens Manuals3rd party integrationDesigo RXC21 Room Controller Application Notes Manual Supplement

Document No. 550-697

Rev. 1, May, 2002

LTEC Unit Ventilator

DDC Controller

Siemens Building Technologies, Inc. Page 1 of 10

Product Description

These instructions explain how to install or replace a

LTEC (LonMark



Terminal Equipment Controller) UV

(Unit Vent) DDC Controller (Figure 1). Each platform

supports various applications of the Unit Vent terminal

unit. Each application set has a default input / output

wiring configuration shown in Figure 5 through Figure 9.

The LTEC UV DDC Controller applications are provided

in the following configurations:

• UVC- Unit Vent Chill Water, w/single speed fan,

2 or 4 pipe heating and/or cooling coils, outside

air damper control.

• UVD- Unit Vent – DX, w/single speed fan,

single or multi stage DX cooling, terminal

heating coils, outside air damper control.

• UVF- Unit Vent – Face & Bypass damper

control, 2 or 4 pipe cooling and/or heating coils,

outside air damper control.

LON0006R1

Figure 1. LTEC Controller – open cover.

Product Number

Part

number

Application Input/Output

550-540 LTEC UVC CW/HW 2/4 pipe 4 IN, 6 DO

550-542 LTEC UVC CW/HW 2/4 pipe 5 IN, 8 DO, 3 AO

550-541 LTEC UVD DX w/htg. 4 IN, 6 DO

550-543 LTEC UVD DX w/htg. 5 IN, 8 DO, 3 AO

550-544 LTEC UVF w/Face/Bypass w

2/4 pipe htg/clg

5 IN, 8 DO, 3 AO

In addition to the listed inputs above, each platform can

accept a series 550-180 through 550-187 LTEC room

temperature sensor (RTS) with optional digital display,

occupancy override push button and set point

adjustment.

Warning/Caution Notations

WARNING

Personal injury/loss of life may

occur if a procedure is not

performed as specified.

CAUTION

Equipment damage, or loss of

data may occur if the user

does not follow procedure as

specified.

LON0026R1

8 7/8"

8 1/16"

1 7/8"

6 3/16"

A01

A02

A03

D01

D02

D03

D04

D05

D06

D07

D08

NMT

RTS

SRV

BST

SRV

BST

NET

DI1

AI1/

DI2

AI2/

DI2

AI2/

DI3

AI3/

DI4

AI4/

DI5

AI5/

24Vac H

Neutral

EGrnd

Figure 2. LTEC Controller.

Summary of content (10 pages)

PAGE 1
Installation Instructions Document No. 550-697 Rev. 1, May, 2002 LTEC Unit Ventilator DDC Controller Product Description These instructions explain how to install or replace a LTEC (LonMark Terminal Equipment Controller) UV (Unit Vent) DDC Controller (Figure 1). Each platform supports various applications of the Unit Vent terminal unit. Each application set has a default input / output wiring configuration shown in Figure 5 through Figure 9.
PAGE 2
Document No. 550-697 Installation Instructions Rev. 1, May, 2002 Required Tools • Pencil • ESD wrist strap • Small flat blade screwdriver • Medium flat blade screwdriver • Wire stripper • Medium duty electric drill Network Management Tool Connection NMT • ¼ in (6mm) hex nut bit Room Temperature Sensor Connection RTS • Network Management Tool Service Pin • Bus interface and cables 3.
PAGE 3
Document No. 550-697 Installation Instructions Rev. 1, May, 2002 7. For input type selection, (digital, voltage, or current) see the jumper and connection information in Table 2. NOTE: Each DO provides a normally open (NO) and 24 Vac hot (H) terminal. Terminate both connections of a 24 Vac load directly to the controller board. Floating control actuators require 2 DOs and use 3 wire connections. The 24 Vac Common is switched through the Triac when the associated DO is energized.
PAGE 4
Document No. 550-697 Installation Instructions Rev. 1, May, 2002 Terminal Designations AI/DI 1 Figure 4 shows the LTEC wiring designations and internal jumper locations for both controllers. AI/DI 2 NOTE: AI/DI 3 All inputs and outputs physical connections are pre-configured per application number selected. AI/DI 4 The wiring diagrams (Figure 5 thru Figure 9) are shown using the full point controllers (shaded terminals).
PAGE 5
Document No. 550-697 Installation Instructions Rev. 1, May, 2002 Table 2. Input Configuration and Jumper Settings.
PAGE 6
Document No. 550-697 Installation Instructions Rev. 1, May, 2002 1. To record Initial Values, before disconnecting the old controller, do one of the following: • If the controller is communicating with the field panel, update the controller initial values at the field panel. • If the controller does not communicate with the field panel, but does communicate with the NMT, record the appropriate configuration points on Table 3 at the end of these instructions. • 2.
PAGE 7
Document No. 550-697 Installation Instructions Rev. 1, May, 2002 LTEC UV Application Wiring Diagrams Room Sensor NMT RTS SRV BST 1 2 Network Trunk *Discharge Temp Sensor Spare Temp Sensor Fan Status DI *Low Temp Sensor DI OA Temp Transmitter 0-10 Vdc/4-20 mA NET 1 2 3 4 5 6 + + + A03 A01 SRV BST J7 A02 J3 1 24Vac H 2 D02 3 24Vac H 4 D03 5 24Vac H 6 D04 7 24Vac H 8 D05 9 24Vac H 10 D06 11 24Vac H 12 D07 13 24Vac H 14 D08 15 24Vac H 16 J2 OA Damper Act. 0-10 Vdc Terminal Clg.
PAGE 8
Document No. 550-697 Installation Instructions Rev. 1, May, 2002 Room Sensor NMT RTS SRV BST SRV BST 1 2 Network Trunk *Discharge Temp Sensor Spare Temp Sensor Fan Status DI *Low Temp Sensor DI OA Temp Transmitter 0-10 Vdc/4-20 mA NET 1 2 3 4 5 6 J7 + + A02 + A03 - J3 1 24Vac H 2 D02 3 24Vac H 4 D03 5 24Vac H 6 D04 7 24Vac H 8 D05 9 24Vac H 10 D06 11 24Vac H 12 D07 13 24Vac H 14 D08 15 24Vac H 16 A01 J2 OA Damper Act. 0-10 Vdc Perimeter Htg.
PAGE 9
Document No. 550-697 Installation Instructions Rev. 1, May, 2002 Room Sensor NMT RTS SRV BST Network Trunk *Discharge Temp Sensor Spare Temp Sensor Fan Status DI *Low Temp Sensor DI OA Temp Transmitter 0-10 Vdc/4-20 mA 1 2 NET J7 J3 1 24Vac H 2 D02 3 24Vac H 4 D03 5 24Vac H 6 D04 7 24Vac H 8 D05 9 24Vac H 10 D06 11 24Vac H 12 D07 13 24Vac H 14 D08 15 24Vac H 16 J2 OA Damper Act. 0-10 Vdc Perimeter Htg. Coil 0-10 Vdc F&B Damper Act.
PAGE 10
Document No. 550-697 Installation Instructions Rev. 1, May, 2002 Table 3. Record of Controller Modified Initial Values. Point Number Descriptor Initial Value Point Number Descriptor Initial Value 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. © 2001 Siemens Building Technologies, Inc. Siemens Building Technologies, Inc.