Multitech MT1432BA Manuel d'utilisateur Page 88

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88
MultiModemBA User Guide
7.1 Introduction
This chapter describes how the MultiModem’s Callback and Remote Configuration features operate.
These features use a multilevel security system, which involves the use of LOGIN Passwords, Setup
Passwords and Remote Escape Characters.
The primary level security code is the modem’s LOGIN Password. Once this password is entered,
other passwords can be used. For instance, entering the LOGIN Password will allow you to enter the
Setup Password, which, in turn, allows you to enter Callback Passwords and dial back phone
numbers. Callback Passwords tell your modem what dial back phone number to call.
The Remote Escape Character is the key to using the Remote Configuration feature. The Remote
Escape Character lets you enter Command mode via a remote call, so that you can enter AT
commands just as if you were locally connected. You must also enter your modem’s Setup
Password. The Remote Escape Character is contained in S-Register S13.
7.2 Callback Feature Description
The Callback feature protects your network from unauthorized access and helps control long
distance costs. By use of Callback Passwords and dial back phone numbers, you can have your
modem "dial back" remote locations immediately after being called. A special command (Enable
Callback #DB) turns your modem into a Callback security modem. The Callback Password/Phone
number entry is protected by two-level security (your modem's LOGIN Password and Set-Up
Password) that keeps unauthorized personnel from changing parameters. When you first get your
modem, you need to change both security level codes to your unique settings.
The Callback Passwords and dial back phone numbers are in a special Callback Password/dial back
phone number memory (30 numbers long). You use the modem's LOGIN Password and the Set-Up
Password plus special Callback commands to access this memory. The memory is thirty numbers
long and replaces your modem's normal phone number memory.
Each number is 35 characters long and can contain commands as well as phone numbers. You need
to set up your modem with the numbers and codes as part of the dial back initialization procedures.
Your modem will also remember if the incoming call was reliable or not, and make the call back
accordingly.
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Carrier 59SC2A Manuel d'instructions (84 pages)


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Table des matières

Condensing Gas Furnace

1

Series 100

1

IMPORTANT

2

SAFETY CONSIDERATIONS

3

INTRODUCTION

4

CODES AND STANDARDS

4

ELECTROSTATIC DISCHARGE (ESD)

4

PRECAUTIONS PROCEDURE

4

ACCESSORIES

5

Fig. 1 -- Dimensional Drawing

6

80 / 27˚C

7

LOCATION

8

AIR FOR COMBUSTION AND

9

VENTILATION

9

Standard Method

10

NP = Not Permitted

11

Outdoors

12

CONDENSATE TRAP

13

Downflow Trap Configuration

14

(Appearance may vary)

15

CONDENSATE DRAIN CONNECTION

17

L12F019B

18

Formed end of

19

INSTALLATION

20

Horizontal Installation

21

Filter and Return Duct Sizing

22

(FIELD SUPPLIED)

24

UPFLOW DOWNFLOW HORIZONTAL

26

HORIZONTAL TOP

27

RETURN NOT

27

PERMITTED FOR

27

ANY MODEL

27

COMBUSTION - AIR PIPE

28

(SEE VENTING SECTION)

28

AIR DUCTS

29

GAS PIPING

31

ELECTRICAL CONNECTIONS

32

J--Box Installation

33

24--V Wiring

33

Alternate Power Supplies

33

Materials

38

Venting Systems

38

Locating the Vent Termination

39

Direct Vent / 2-Pipe System

40

Ventilated Combustion Air

40

Guidelines

41

Configure the Furnace

42

Roof Terminations

43

Example 1

48

Example 2

48

Vent Coupling and Adapter

50

Downflow Vertical

52

HORIZONTAL LEFT

53

RIGHT VENT CONFIGURATION*

53

VENT PIPE FLUSH WITH ADAPTER

55

Roof Termination (Preferred)

58

COMBUSTION-AIR

59

(ELBOW PARALLEL TO WALL)

59

Polypropylene Venting Systems

61

Purge Gas Lines

62

Adjustments

62

Adjust Temperature Rise

64

Adjust Cooling Airflow

64

338309-201 Rev. E

66

SINGLE-STAGE FURNACE

68

SERVICE AND MAINTENANCE

70

PROCEDURES

70

Component Self-Test

71

Checklist

71

Care and Maintenance

71

Servicing Hot Surface Igniter

74

Cleaning Heat Exchangers

75

Burner Flame

76

Manifold

76

Fig. 62 -- Blower Assembly

77

Fig. 63 -- Burner Assembly

78

SEQUENCE OF OPERATION

79

Troubleshooting Guide

80

Troubleshooting Guide (Cont)

81

Fig. 65 -- Wiring Diagram

82

Replaces: 59SC2A---01SI

84





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