CommPact Control system Bedienungsanleitung PDF herunterladen (Seite 10)

COMPACT

COMPACT Control System

Applies to COMPACT Unit & Top only

Electric Air Heater

The function is automatically activated when the TBLE air heater

is connected.

On a heating load, the power supplied to the air heater is con-

trolled in sequence with the heat exchanger.

Whenever the air velocity through the unit is low, the power

supplied is automatically reduced to prevent the electric heating

elements from becoming overheated. After the air heater has

been in operation, the supply air fan is always run for 3 minutes

more for cooling the air heater afterward. This occurs also if the

air handling uit has been manually switched off or automatic

functions have switched it off.

Air Heater for Hot Water

The function is automatically activated when the TBLE air heater

is connected.

On a heating load, the valve and actuator are controlled in se-

quence with the heat exchanger.

Pump Control

The circulation pump starts when there is a heating load and if

the outdoor temperature is low. Other times, the pump is exer-

cised at regular intervals.

Anti-frost Monitor

The air handling unit is stopped if freezing inside the air heater

is likely. The anti-frost function keeps the air heater warm at

13°C while the air handling unit is in operation and 25°C when

the unit is switched off.

Heating BOOST

From normal ﬂow regulation, both the supply air and the ex-

tract airﬂows are increased to carry more heat into the

premises.

The fans are allowed to operate in the range between current

ﬂow modes (low speed, high speed) and the preset max speed

ﬂow.

The function only works if the air handling unit is operating in

the extract air regulation mode.

Intermittent Night-time Heating

The air handling unit is started and stopped within the preset

temperature limits for heating the premises when it is normally

stopped by the time switch clock (timer).

Intermittent night-time heating requires an external room

sensor, and that the air handling unit is connected to an air

heater for reheating.

When the function is activated, the air handling unit detects

when the room temperature drops below the preset start tem-

perature. The unit starts with preset ﬂows and the supply air

temperature setpoint.

Morning BOOST

The air handling unit starts at the preset time, before the start

time of the time switch clock, with preset temperature setpoint

for heating the room.

Applies to COMPACT Unit & Top only

Preheating the Outdoor Air

Preheating the outdoor air if the outdoor temperature is cold

and the humidity is high can prevent condensation from form-

ing in the air handling unit’s ﬁlters. Preheating may also be nec-

essary to heat the air if during a spell of extremely cold weather.

The outdoor air preheating function requires placing the air

heater in the outdoor air duct and the TBLZ-1-53-a (controlling

the air heater preheating function).

The TBVL valve set can be used for the air heater for hot water

and if a pump is required, the TBPA pump set can be used.

The following types of air heater can be selected:

• Electric air heater of pause/pulse type

• Electric air heater, 0–10 V.

• Air heater for hot water with anti-frost monitor function.

• Air heater for hot water without anti-frost monitor function.

Control Function

Temperature sensors in the ducts keep the preset temperature

constant. The setpoint required can be set in the hand-held

micro terminal.

Anti-frost Monitor Function

The alarm limit and heat keeping function settings are common

for the preheating coil and the ordinary air heater in the supply

air path.

Pump Control

Provision is available for controlling pump operation. The set-

tings for exercising will then be common with the ordinary air

heater in the supply air ductwork.

Electric Air Heater

Overheat monitor and recooling whenever the air handling unit

stops.

Heating

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COMPACT Control System 1

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