Multi Variable Air Conditioners Fresh Air Series Indoor Unit
15
Fig.4.3.10 Fig.4.3.11
3) Check if the water drains smoothly from the drain pipe and check if there is water leakage on
the connection pipe.
4) Arrange insulation of drain hose and pipe clamp after checking the drain system.
Models with water pump
(1) Fill some water to the water tray of indoor unit as following:
1) Connect the drain hose to the other drain connection pipe of water tray and fill about 1L
water (as shown in Fig.4.3.10). (Remove the drain hose after finishing testing and then put
on the plug of water tray).
2) Spray 1L water on evaporator with sprayer, as shown in Fig.4.3.11.
(2) Start the water pump to check if water drains smoothly. The starting method of water pump is as
below:
1) If project debugging of unit has been done, please set the indoor unit in cooling or dry mode.
In this case, the water pump will operate automatically.
2) If communication wire is not connected, communication malfunction “C0” will occur after 60s
of energizing. In this case, the water pump operates automatically. Check if the water pump
drains normally drains normally through drainage port. The water pump will stop
automatically after running for 10min.
(3) Check if the water drains smoothly from the drain pipe and check if there is water leakage on
the connection pipe.
(4) Arrange insulation of drain hose and pipe clamp after checking the drain system.
4.4 Installation of Air Duct
NOTES!
①
There should be insulating layer on air-out duct, air-return duct and fresh air duct to avoid heat
loss and moisture. Adhere a nail on the air duct and then add thermal sponge with a layer of tin.
Fasten it with a nail cover and then seal the junction with tin tapes; you can also use other
materials that have good insulation quality.
②
Each air-out duct and air-return duct should be fixed on a pre-made board with iron frame. The
junction of air duct should be well-sealed in order to prevent air leakage.
③
The design and construction of air duct should comply with national requirements.
④
The edge of air-return duct is suggested to be more than 150mm away from the wall. Add a
filter to the air-return opening.
