Orion-system MODGAS-X Manual do Utilizador descarregar pdf (Página 14)

OPERATION MODES

MODGAS-X Field Technical Guide

Outputs and Operation Modes

Operation Modes

The MODGAS-X Controller can be used stand-alone or communicat-

ing with an AAON Unit Controller using a modular cable.

Stand-Alone Mode

When used in a stand-alone application, the MODGAS-X Controller

will modulate the gas valve(s) and stage any additional ﬁ xed stages to

maintain the DISCHARGE setpoint conﬁ gured on the MODGAS-X

Controller LCD display. The MODGAS-X Controller is activated

by a 24VAC signal to the HEAT EN input.

The following are available in Stand-Alone mode using the LCD

display on the MODGAS-X Controller:

• Status

• Supply Air Temperature Setpoint Adjustment

• Supply Air Reset Temperature Setpoint

Adjustment

• Force Mode ON/OFF

• Force Valve Position

• Force Relays

• Alarms

Communicating Mode

When the MODGAS-X Controller is connected and communicating

with an AAON Unit Controller via a modular cable, the necessary

information will be passed between the MODGAS-X and the Main

Unit Controller to properly operate in the Heating Mode.

If the communication is interrupted between the MODGAS-X

Controller and the Main Controller, both boards will show an alarm.

When communication is restored, the alarms will go away.

In this conﬁ guration, the Supply Air Temperature Setpoint is set

using the Main Controller and the Supply Air Temperature Reset is

calculated by the Main Controller.

The following are available in communicating mode using the LCD

display on the MODGAS-X Controller:

• Status

• Force Mode ON/OFF

• Force Valve Position

• Force Relays

• Alarms

Relay #3 - Aux 1

Stage 2 Heat (Fixed or Modulating)—If conﬁ gured for two

or more stages of heat, this relay would enable the 2nd stage of

heat if the 1st modulating valve cannot maintain the conﬁ gured

supply air temperature setpoint. This stage and any additional

stages of heat will stage up and down as required to maintain

the Supply Air Temperature Setpoint. The Stage Up Delay de-

fault is 3 minutes. The Stage Down Delay default is 1 minute.

Relay #4 - Aux 2

Stage 3 Heat (Fixed or Modulating)—If conﬁ gured for three or

more stages of heat, this relay would enable the 3rd stage of heat as

needed to maintain the conﬁ gured supply air temperature setpoint.

This stage and any additional stages of heat will stage up and down

as required to maintain the Supply Air Temperature Setpoint. The

Stage Up Delay default is 3 minutes. The Stage Down Delay default

is 1 minute.

12-Relay E-BUS Expansion Module - Stand-Alone

Only

Stages 4-15 Heat (Fixed) These relays should only be used in

Stand-Alone conﬁ guration when more than three stages of heat are

conﬁ gured. These relays will successively stage up based on the

stage up delay to maintain the conﬁ gured supply air temperature

setpoint. This stage and any additional stages of heat will stage

up and down as required to maintain the Supply Air Temperature

Setpoint. The Stage Up Delay default is 3 minutes. The Stage Down

Delay default is 1 minute.

Revised 9/30/14

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 27 28

Comentários a estes Manuais

Sem comentários

Orion-system MODGAS-X Manual do Utilizador Página 14

Comentários a estes Manuais

Manuais e produtos relacionados com Hardware Orion-system MODGAS-X