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コントロールパネル AERMEC PXA IのPDF 使用および設置マニュアルをオンラインで閲覧またはダウンロードできます。AERMEC PXA I 7 ページ。 Electronic control panel for fan coils

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Congratulations

for

thermostat.

Made

rules, the "PXA E" is easy to use and will be with you for many years to come.

The PXA I regulation thermostats are control panels for fan coils for

installation on the machine.

They control the fan coil functioning in accordance with the mode set, the

room temperature and the water temperature in the circuit to maintain the

set temperature in the room.

The panels must be used on four- or two-pipe plus PLASMACLUSTER

purifier systems with the possibility of connecting two On - Off valves

to cut off the supply of water to the

coils or one valve and a

air purifier.

Each control panel can control a

single fan coil.

The control panel only consists of

mains voltage (230V) electrical

circuits; all the inputs for the probes

and controls must therefore be

correspondingly insulated for this

voltage.

The valve servo commands must also

be scaled for 230V.

PXA meets the requirement of the

Low Voltage directives 73/23 (EN

60730-1, EN 60730-2-9, EN 60335-

1) and electromagnetic compatibility

directive 89/336 (EN 61000-4-1, EN

55011, 55022, 55014).

The panel may only be opened and

installed by specialised personnel.

Cut off the supply voltage before

removing the lid of the control panel.

Touching live components could

electrocute you. This is particularly

true also for the setting of contacts

on the Sw1 and Sw2 cut outs.

OPERATION

The thermostat's job is to keep the temperature set on selector (B)

constant in the room.

Frost Protection, with selector switch (A) in the OFF, position it

prevents premises that are uninhabited for long periods from falling

to temperatures below 7°C, which would make them difficult to heat

again when they are to be reused. If the fan coil is fed with warm

water it will start in AUTO until the room temperature is 9°C.

The Frost Protection function must be programmed by the installation

engineer.

All Off, selector (A) in the OFF position, the fan coil is completely off.

VENTILATION

In the two-pipe system, the thermostat makes it possible to enable

the heating ventilation only if the temperature of the water exceeds

35° or 39°C (programmable in the installation phase); in the same

way, the ventilation in the cooling mode is only enabled if the

water temperature is less than 17°C or 22°C (programmable during

installation).

Ventilation is delayed compared with the start and turn off

commands.

The functions described on the one hand prevent unwanted cold

ventilation in winter mode and, on the other, allow all the terminals

to come on and go off depending on the temperature of the water.

The ventilation mode is set with selector (A).

Manual mode (selector in position V1, V2, V3) the fan uses On-Off

cycles on the selected speeds.

Automatic mode (selector in AUTO position) the fan speed is

managed by the microprocessor of the PXA.

The delay between opening or closing of the warm water valve and

the turning on or off of the fan can last for up to 2' 40".

purchasing

the

PXA

with

top

quality

I Aermec

electronic

materials

rigourously

The panel comprises:

– (A) on-off selector switch and ventilation speed;

– (B) temperature selector;

– (C) blue / red/ fuchsia leds, operation mode (Cooling/ Heating/

Antifreeze/ Autotest)

– (D) yellow led, fan coil operation, Autotest.

AUTOMATIC CHANGE OVER AIR SIDE

The control makes it possible to automatically set the fan coil

functioning mode at heating or cooling.

- In the two-pipe no valve systems or those with probe up line

from the valve, the functioning mode change is determined by the

temperature of the water circulating in the system.

- In the four-pipe no valve systems or with probe up line of the

valve,the functioning mode change is determined by the temperature

of the water circulating in the plant if this is at a value higher than

the enabling threshold. If the temperature of the water circulating is

lower than the disabling threshold, the functioning mode change is

determined by the difference between the temperature measured in

the room and the set temperature.

- In two-pipe systems with probe downline from the valve and

in all the systems without water temperature probes, the change

of operational mode is determined by the difference between the

temperature measured in the room and the set temperature.

control

panel

with

abiding

safety

V1 = Minimum speed

V2 = Medium speed

V3 = Top speed