Airwell HRW 096 [29/42] Demand for heating

Take care

It is not the manufacturer's policy to make recommendations in terms of water treatment (please contact

a specialised water treatment company).

However, given the critical nature of this subject, particular care should be taken to ensure that, if

treatment is required, it works effectively.

Using untreated or unsuitable water leads to excessive clogging inside the coil tubes (earth and mud

deposits, corrosion, etc.) with major consequences on the thermal efficiency of the unit and irreversible

damage to the equipment.

The manufacturer and its representative decline all responsability in the event of untreated or incorrectly

treated water being used.

DEMAND FOR HEATING

1. With the MODE key on the RCL control modules, select HEAT mode

and then set the maximum

temperature with the UP and DOWN arrows. The ambient temperature should be within the operating

limits (Refer to "Operating limits"). In the same way, during the pre-commissioning checks the exchanger

pump(s) water loop inlet temperature should be within the limits corresponding to each operating

mode (Refer to "Operating limits").

Reminder: if one of these factors is situated at its minimum or maximum level, the other should be

situated at a normal level in order to ensure the unit’s correct and normal operation.

2. Ensure that the thermostat is connected properly and set the set temperature above the ambient

temperature of the zone to be cooled. After 3 minutes, the compressor starts operating.

3. When the appliance has been operating for a few minutes, check the presence of hot air at the

blowing grille.

4. When the appliance has been operating for a few minutes, check the temperature of the unit’s outlet

water. Generally, this should be around 3°C below the unit’s water loop inlet temperature. A variance

lower than 2°C indicates that the water flow is too high, whilst a variance higher than 6°C indicates

that the water flow is too low.

5. Adjust the isolation/balancing valve on the outlet water pipe to obtain the appliance’s nominal water

flow (Refer to the Maker’s Plate)

6. Check that the condensates drainage system is working properly and check that a siphon is included

in the drainage line.

7. Check for the absence of vibrations and water leaks.

8. When all the above tests have been completed, adjust the system to maintain the desired comfort

level.

Note: If the unit does not operate, perform a fault diagnosis (Refer to "Maintenance and servicing"). If the fault

analysis does not enable the cause of the problem(s) to be determined or if the unit still does not operate, contact

a qualified after-sales technician to obtain a correct diagnosis and to repair the equipment.