Heat Controller DMH18DB-1 Test Running, 34Multi type Air Conditioner, Prepare remote control

Test Running

Test Running

1.Check that all tubing and wiring have been properly connected.

2.Check that the gas and liquid side service valves are fully open.

Prepare remote control

Remove the battery cover by pulling it according to the arrow direction.

Insert new batteries making sure that the (+) and (–) of battery are installed correctly.

Reattach the cover by pushing it back into position.

NOTICE :

•Use 2 AAA(1.5volt) batteries. Do not use rechargeable batteries.

•Remove the batteries from the remote control if the sys- tem is not going to be used for a long time.

Evaluation of the performance

Operate all indoor units for 15~20 minutes, then check the system refrigerant charge:

1.Measure the pressure of one of the gas side service valves.

2.Measure the temperature of the intake and discharge of air.

3.Ensure the difference between the intake temperature and the discharge is more than 8°C(14.4°F).

4.For reference, the gas side pressure of optimum condi- tion is as below.(Cooling)

Refrigerant	Outside ambient	The pressure of the gas side
	TEMP.	service valve.
R-410A	35°C (95°F)	8.5~9.5kg/cm2G(120~135 P.S.I.G.)

NOTICE : If the actual pressure are higher than shown, the system is most likely over-charged, and charge should be removed. If the actual pressure are lower than shown, the sys- tem is most likely undercharged, and charge should be added.

Bolt

Tubing connection

Intake temperature

Discharge air

Discharge temperature

Important:

❏Individual zones should be all in the same operation mode (Heating or Cooling mode)

34Multi type Air Conditioner