(1) Waterway system
The water supply and return of all units are supplied from the bottom to the top, and all water
pipes must be installed in strict accordance with the engineering drawings. It is recommended to
use flexible pipes for the water pipes connected to the unit, and the main water pipes must be
equipped with supporting devices at intervals to bear the weight of the water in the pipes and the
water pipes themselves. In addition, the fixing of the pipe must have a certain gap to
accommodate the thermal expansion and contraction of the pipe when running hot and cold water.
(2) Takeover direction
The way to judge the connection direction is to face the air outlet of the unit, and the water
connection pipe is on the left, which is the left type, and vice versa, it is the right type. The user
needs to indicate when selecting the unit, and the factory produces according to the requirements.
In the event of an error, the TCR horizontal concealed model can change the connection direction
on site. The method is as follows: the fan assembly (including fan, motor, and base plate, etc.) You
can install it by swapping the position. (At this time, the cold/heat will have a 10% attenuation)
Takeover operation
Sealing measures should be taken at the threaded joints (it is best to use polytetrafluoroethylene
raw material tape), and insulation treatment should be done after the pipeline pressure test;
The valve parts on the pipeline should be within the range of the water pan of the unit, otherwise it
should be kept warm or an additional water pan should be added to prevent the condensed water
from damaging the decoration;
The condensate pipe should be kept warm and its slope should not be less than 1:75 to facilitate
drainage.
Note: When taking over the pipe, the pipe wrench should be selected according to the diameter of
the pipe, so as not to damage the machine parts due to excessive force of the pipe wrench.
(4) Electrical connection
Please ensure that the electrical connection is installed by a professional with electrical experience;
All electrical wiring shall comply with national and local standards;
Before wiring, please read the random electrical wiring diagram carefully.
Note: It is strictly forbidden to use one thermostat to control multiple fan coil units of different
models to avoid motor burnout. The grounding bolt provided by the unit must be reliably
connected to the grounding system of the building. The grounding wire must not be connected to
gas pipes or water pipes. Poor grounding may lead to electric shock accidents.
(5) Duct connection
Air duct design and installation shall be carried out in accordance with relevant national standards;
The factory does not have a return air box unit. The internal size of the on-site air distribution pipe
must match the fan fixing plate and be fixed firmly. It is not recommended to use internal
insulation to avoid interference with the fan and cause abnormal noise;
The air outlet of the unit and the air outlet grille, and the return air outlet and the return air grille
need to be connected by soft connections.
5. Water system pressure test
In order to ensure that the water system is well sealed, the water system should be pressure tested
after the installation of the water system is completed. During the test, the manual exhaust valve
on the coil can be used to discharge the air in the coil. (The residual air in the coil will concentrate
on the top of the coil, making abnormal noise and affecting the heat transfer performance even
more.) After the air valve discharges a stable water flow, close the exhaust valve tightly. The
pressure test of the water system must follow the pre-established pressure test plan. The pressure
should be raised slowly and evenly. After the pressure is stable, carefully check whether there is any
leakage at the connection of each pipeline.
