Viessmann AWO-M-AC 101.A06, Assembly And Servicing Instructions

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4.6 R32 GAS CHARGE
The procedures described below may only be performed by skilled technicians or qualified personnel:
- ensure the R32 is not contaminated by any other types of refrigerant;
- keep the gas cylinder in an upright position when charging;
- ground the refrigerant circuit
- apply the appropriate label on the unit after charging;
- do not charge more refrigerant gas than needed;
- when charging is completed, perform leak tests before the operating test;
- once all the above operations have been completed, a second leak test should be performed.
4.7 R32 GAS DISPOSAL
The procedures described below may only be performed by skilled technicians or qualified personnel:
- do not dispose of the gas in areas at risk of explosive mixtures forming with air The gas should be
disposed of in an appropriate torch with backfiring stop device. Contact the supplier should you
require operating instructions.
4.8 SAFETY RULES FOR R32 GAS TRANSPORT AND
STORAGE
Before opening the unit’s packaging, ensure there are no gas leaks in the environment with an appropriate
gas detector. Ensure there are no fire ignition sources near the unit.
No smoking is allowed near the unit.
Transport and storage must be performed in accordance with the national regulations in force. Specifically,
according to ADR provisions, the total maximum quantity by transport unit in terms of net mass for
flammable gases is 333 kg.
5 INSTALLATION
CAUTION: All the operation described below must be done by QUALIFIED PERSONNEL ONLY.
Before any operation on the unit, make sure that power is disconnected. Also make sure that
power cannot be accidentally switched back on until all the operations are over, by means of
specific locks.
5.1 GENERAL
When installing or intervening on the chiller unit, it is necessary to strictly follow the rules listed in this
manual, to observe all the indications on the unit and however to take all possible precautions. Failure to
comply with the rules reported on this manual can create dangerous situations.
After receiving the unit, immediately check its integrity. The unit left the factory in perfect
condition; any damage must be immediately reported to the carrier and recorded on the
Delivery Note before signing it.
The company must be informed, within 8 days, of the extent of the damage. The Customer should prepare a
written statement of any severe damage.