Engineered air DG series Información técnica descargar pdf (Pagina 6)

A G-TRAC2 MANUAL

General Manual Revised: 03/15/99

Page

G-TRAC2

Report any errors, omissions, etc. to Wade Pascoe at (403) 287-4775 or FAX (403) 287-4799.

Warranty will only be honoured when a qualified HVAC service person, who has received training on the G-

TRAC2 is employed for service and troubleshooting. If further information is required please contact the nearest

Engineered Air office.

TEMPERATURE CONVERSIONS

In this manual temperatures are listed in both degrees C (ºC) and degrees F (ºF). The conversion formulas

between the two systems are as follows:

ºF = (ºC X 1.8) + 32

ºC = (ºF - 32) X 5/9

I. APPLICATION

The G-TRAC2 is designed to control larger capacity high turndown “DG” indirect fired burners applied to heating, vent

and/or MUA applications.

II. SERVICE

Do not adjust pots or dip switches unless you are familiar with operation, effect, and how to return to correct

setting. Just noting settings will not allow return to the exact position on some pots, which require special

instruments to set.

Before servicing, the technician should be familiar with the following points in this guide:

• The G-TRAC-2 internal fuse should be checked if the control is dead when 24 VAC is on "T1 and T2".

(Section XXIII)

• System Timings (Section V)

• Basic Operation (Section IV)

• Status Lights (Section IX)

• Temperature Readout (Section XIX)

• Calculated Set-Point (Section XVIII)

• Auto Bypass Low Limit (Section X)

III. RESET DISCHARGE AIR TEMPERATURE

Some G-TRAC2's accept reset signals from other devices that can reset discharge air temperature. Refer to the

unit wiring diagram and G-TRAC-2 label, to determine if room thermostats, return thermostats, remote set-points,

ambient resets, building management resets (BMS), etc., are in use. If used, refer to appropriate reset information

in this guide.

IV. GENERAL DESCRIPTION

The G-TRAC2 is a programmed logic controller designed for use with the Engineered Air DG series heaters. This control

package provides temperature, supply blower, and burner control. The G-TRAC2 eliminates the mechanical linkages between

the combustion air and gas actuator by using direct drive floating point. The G-TRAC2 is not intended to be retrofitted on

jobs with the older G-TRAC/V9055 gas valve combination.

1 2 3 4 5 6 7 8 9 10 11 ... 41 42

Sin comentarios

Engineered air DG series Información técnica Pagina 6