Greenheck Microprocessor Controller v3.0 (469690) Manual de usuario descargar pdf (Pagina 20)

Unoccupied mode

setup.

Type:Cycle Supply Fan

Source: Input ID6

Allow the dampers to

open for:10 seconds

before starting the

fans.

Time delay between

heating, cooling, &/or

economizer modes.

Delay:600s

THIS SCREEN ALLOWS FOR THE USER TO ADJUST THE DELAY TIME BETWEEN

MODES.

This time delay prevents short-cycling between heating, cooling and/or economizer

modes.

THIS SCREEN DISPLAYS WHAT THE UNIT WILL DO IN UNOCCUPIED MODE.

Setting the Type to Cycle Supply Fan will engage the unit to maintain space

temperature. However, the room suppy temp sensor must be wired between B4 and

BC4 on the controller. If desired, the Source offers three options that can be used to

operate unoccupied/occupied modes:

Option 1: Input ID6 – typically used with a remote time clock (Default)

Option 2: BMS – can be overridden by a separate input to ID6

Option 3: Internal Time Clock – can be overridden by a separate input to ID6

Without the room supply temp sensor, the Type will say Unit Off, and thus the unit will

be off during unoccupied mode.

THIS SCREEN ALLOWS FOR THE USER TO PROGRAM THE TIME FOR THE DAMPERS

TO OPEN PRIOR TO THE FAN ENGAGING.

This allows for a smoother startup of the system and prevents the fans from having

to overcome the higher pressures when dampers are just beginning to open. Since

dampers have a slow reaction time, the default is 10 seconds which allows enough time

for them to fully open.

Fan/airflow proving

alarm delay:030s

(inputs ID1 & ID5)

THIS SCREEN ALLOWS FOR THE USER TO DELAY AN ALARM SIGNAL FROM THE FAN

AIRFLOW PROVING SWITCH WHICH SHUTS THE UNIT DOWN.

Since the unit is only part of a complete system, the airflows may momentarily change

(ie. If a downstream damper closes). This delay is intended to prevent false alarms (the

factory recommends that at least 30 seconds be programmed into the controller).

Time delay between

starting of supply

& exhaust fans.

Fan delay:005s

Also, the exhaust fan engages first, allowing the wheel to see space temperature

conditions prior to the supply fan engaging. This allows the energy recovery wheel

the opportunity to provide maximum preconditioning of the outdoor air. This also

minimizes the potential of extreme outdoor air temperatures being supplied to the

space prior to the cooling and or heating sections engaging.

PROGRAM MENU - continued

THE TIME DELAY BETWEEN THE STARTING OF THE SUPPLY AND EXHAUST FANS

THAT REDUCES THE STARTUP AMP DRAW OF THE UNIT.

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Greenheck Microprocessor Controller v3.0 (469690) Manual de usuario Pagina 20

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