Installation Instructions

ManualsBrandsSiemens Manuals3rd party integrationDesigo RXC21 Room Controller Application Notes Manual Supplement

Document No. 550-598

Rev. 1, May, 2002

LTEC Fan Coil

DDC Controller

Page 1 of 10

Product Description

These instructions explain how to install or replace a

LTEC (LonMark



Terminal Equipment Controller) FC

(Fan Coil) DDC Controller.

Each platform supports various applications of the Fan

Coil terminal unit. Each application set has a default

input/output-wiring configuration, shown in Figure 5

through Figure 9.

Fan Coil Unit applications are provided in the following

configurations:

• FCC-Fan Coil Unit Chill Water, w/single speed

fan, 2 or 4 pipe heating and/or cooling coils.

• FCD-Fan Coil Unit DX, w/single speed fan,

single or multi stage DX cooling, terminal

heating coils.

LON0006R1

Figure 1. LTEC Controller – open cover.

Product Number

Part Number Application Input/Output

550-534 LTEC FCU CW/HW 4 IN, 6 DO

550-536 LTEC FCU CW/HW 5 IN, 8 DO, 2 AO

550-535 LTEC FCU DX 4 IN, 6 DO

550-537 LTEC FCU DX 5 IN, 8 DO, 2 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.

LON0034R1

8 7/8"

(2.25mm)

8 1/16"

(205mm)

1 7/8"

(48mm)

(127mm)

6 3/16"

(157mm)

A01

A02

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. 550-598 Rev. 1, May, 2002 LTEC Fan Coil DDC Controller Warning/Caution Notations Product Description Personal injury/loss of life may occur if a procedure is not performed as specified. Equipment damage, or loss of data may occur if the user does not follow procedure as specified. WARNING These instructions explain how to install or replace a LTEC (LonMark Terminal Equipment Controller) FC (Fan Coil) DDC Controller.
PAGE 2
Document No. 550-598 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. 550-598 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. 550-598 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 The wiring diagrams (Figure 5 through Figure 9) are shown using the full point controllers (shaded terminals). Reduced point controllers should be used when the additional input/output points are not required.
PAGE 5
Document No. 550-598 Installation Instructions Rev. 1, May, 2002 Table 2. Input Configuration and Jumper Settings.
PAGE 6
Document No. 550-598 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. • • 2. 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.
PAGE 7
Document No. 550-598 Installation Instructions Rev. 1, May, 2002 LTEC FC Application Wiring Diagrams Room Sensor NMT RTS SRV BST SRV BST 1 2 Network Trunk Source Temp Sensor Spare Temp Sensor Spare DI OCC Sensor DI Spare Input 0-10 Vdc NET + + A02 + A03 A01 J7 J2 1 2 3 4 5 6 Terminal Htg./Clg. 0-10 Vdc Perimeter Htg.
PAGE 8
Document No. 550-598 Installation Instructions Rev. 1, May, 2002 Room Sensor NMT RTS SRV BST SRV BST 1 2 Network Trunk Jumper Spare DI Spare Temp Sensor Fan Status DI OCC Sensor DI Spare Input 0-10 Vdc NET 1 2 3 4 5 6 + + A02 + A03 A01 J7 J2 1 2 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 Spare AO 0-10 Vdc Perimeter Htg.
PAGE 9
Document No. 550-598 Installation Instructions Rev. 1, May, 2002 Room Sensor NMT RTS SRV BST SRV BST Network Trunk Source Temp Sensor Spare Temp Sensor Spare DI OCC Sensor DI Spare Input 0-10 V 1 2 NET + + A02 + A03 A01 J7 J2 1 2 3 4 5 6 1 2 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 Terminal Clg/Htg. Coil 0-10 Vdc Perimeter Htg.
PAGE 10
Document No. 550-598 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.