Recharging With Refrigerant R410A; Environmental Protection - Lennox Adnova THS Series Installation, Operating And Maintenance Manual

8.6

Recharging with refrigerant R410A

• Connect the tank of refrigerant gas to the male 1/4 SAE inlet situated on the liquid line after discharging a little
gas to eliminate air in the connection pipe.
• Fill with refrigerant in liquid form until you reach 75% of the total charge.
• Then connect to the inlet on the pipe between the thermostatic valve and evaporator and complete the charging
process with the refrigerant in liquid form until no more bubbles can be seen on the liquid level indicator and
the operating parameters specified in section 7 have been reached.
A unit that was originally charged with (nitrogen)
R22 or other refrigerants without the written authorization Lennox
8.7

Environmental protection

The law implementing the regulations (reg. EEC 2037/00) which govern the use of ozone-depleting substances and
greenhouse gases bans the dispersal of refrigerant gases in the environment and requires whoever is in their
possession to recover them and, at the end of their useful life, either to return them to the dealer or take them to a
suitable waste disposal facility. The refrigerant HFC R410A is not harmful to the ozone layer but is included among the
substances responsible for the greenhouse effect and thus falls within the scope of the aforesaid regulations.
Therefore, special care should be taken when carrying out maintenance work to minimize
refrigerant leaks.
@DNOVA THS_R410A-IOM-1304-E
in the factory must not be charged with
21