enertik BC-FCH-68AWG Service manual

Horizontal FAN COIL
Installation & Instruction Manual
IMPORTANT NOTE:
Thank you very much for purchasing our product. Before using your unit, please read
this manual carefully and keep it for future reference.

INDEX

1. Overview of the unit ................................................................................................................ 1
1. Equipment acceptance and installing location ........................................................................ 2
2. Inspection preparation ............................................................................................................ 2
3. Fixing ...................................................................................................................................... 2
4. Unit installation ........................................................................................................................ 2
5. Water system pressure test .................................................................................................... 3
6. Check before operation ........................................................................................................... 4
7. maintenance and maintenance ............................................................................................... 4
8. Packing details ........................................................................................................................ 5

1
Note: Installation and maintenance must be performed by qualified personnel who are familiar
with local installation and maintenance codes and regulations and have experience with this model.
CAUTION: Sharp edges and coil surfaces are hazardous and should be avoided.
Warning: The running machine and power supply are dangerous enough to cause personal injury
or death, and the power supply must be cut off before maintenance.
The air conditioner unit cannot be installed in flammable and explosive environments, as well as in
laundry rooms and saunas.
1. Overview of the unit
Parameters:
Model
BC-FCH-68AWG
Air volume(m3/h)
High
680
Middle
510
Low
340
Cooling capacity
High
3600
Middle
3290
Low
2650
Heating capacity
High
5400
Middle
4530
Low
3130
Inlet water temp.(℃)
7~12
Outlet water temp.(℃)
60
Pressure water drop(kPa)
30
Power supply
220-240~/50Hz
Air volume(m3/h)
Type
Aluminum sheet in steel tube, pitch 2.2mm
Water volume(kg/h)
655
Water resistance(kPa)
30
Operating pressure(Mpa)
1.6
Low static pressure unit
Input power(W)
62
Fan motor power(W)
20
High static pressure unit
static pressue 30Pa
72
25
static pressue 50Pa
84
30
Fan motor q'ty
2
Noise dB(A)
Low static pressure
≤41
High pressure 30Pa
≤44
High pressure 50Pa
≤46
Pipe connection
Water inlet/outlet pipe
ZG3/4''(female thread)
Condesate water pipe
ZG3/4''(male thread)

2
1. Equipment acceptance and installing location
The products have been inspected and tested before leaving the factory, and are packed in
corrugated boxes. The whole unit should be kept in good condition when it arrives at the
construction site by proper transportation. If there is obvious damage to the carton, please check
the condition of the unit itself; if any damage is found, please notify the carrier and the recipient
for joint inspection.
The unit should be stored indoors, and should be carefully protected to prevent moisture,
corrosion and dust; after the unit is unpacked, special attention must be paid to prevent wall dust
or other debris from falling into the fan volute and the surface cooler, which may easily cause the
unit to malfunction .
2. Inspection preparation
Before the unit is in place, it is necessary to check whether the following preparations are in place:
(1) Whether the position of the chilled water and condensate pipe and the wire interface are
correct;
(2) Whether there is enough space for the unit to be in place and routine maintenance;
(3) Whether the hoisting structure has sufficient strength to bear the weight of the unit, and
whether the hoisting bolts are located correctly;
(4) Whether the size of the return air duct or the air outlet duct installed for the unit with residual
pressure is correct, and whether the resistance is within the allowable external residual pressure
range.
3. Fixing
There is a hoisting waist hole on the top of the fan coil unit. It is recommended that the customer
use a φ8 fully threaded screw with flat washers, spring washers and nuts (provided by the
installation company) to fix the unit.
Notice:
(1) In addition to nuts, spring washers and flat washers on the lower side of the fixed unit, there
should also be nuts and flat washers on the upper side of the unit to fix the unit together to make
the unit more stable during operation.
(2) The water collecting pan has been designed to have a certain slope, and the unit only needs to
install the air pan shell horizontally to ensure smooth drainage.
4. Unit installation
The installation part includes water pipes, electric control and connecting pipes, and the
installation protection is applicable to all fan coil units. The installation of the fan coil series is
basically the same except for some individual work in a special environment or the installation of
the unit is slightly different according to the customer's requirements for valves, motors, surface
coolers and some optional coil accessories.

3
(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.

4
Notice:
The pressure test and commissioning of the system should be carried out under frost-free climate
conditions (the minimum temperature is not lower than 0°C). Otherwise, the water in the coil
(system) must be drained after the pressure test and commissioning, and the corresponding
Antifreeze measures, otherwise the coil will be frozen and cracked. When running without heating
in winter, the water in the coil (system) must also be drained, and antifreeze measures should be in
place.
If there is leakage, it is not allowed to repair it under pressure, otherwise the coil will be damaged
and irreparable damage will be caused.
6. Check before operation
The following inspection procedures must be completed before the unit is put into operation:
(1) The operator has carefully read this installation and operation manual;
(2) The unit is installed correctly and the condensed water drains smoothly;
(3) The sundries in the water tray, fan and machine body of the unit have been cleaned up;
(4) The power supply and control lines of the unit have been connected correctly; the grounding is
good;
(5) The chilled water pipes are all connected and there is no leakage in the water pressure test;
(6) The wind wheel of the unit fan is not stuck and can be rotated easily; the coil filter is installed;
(7) The water inlet and outlet pipes and drain pipes of the unit are covered with insulation of
appropriate thickness;
(8) The air duct system of the unit is smooth and free of leakage;
(9) The filter screen on the return air side is installed;
(10) The water supply and return valve has been opened, the air in the system has been emptied,
and the exhaust valve has been tightened to prevent water leakage.
7. maintenance and maintenance
(1) If the unit is not equipped with solenoid valves and thermostats, when the unit stops running,
the low-temperature chilled water in the water loop is still flowing, which will cause the
temperature of the unit shell to be far lower than the ambient air dew point temperature, resulting
in condensation . It may wet the floor or ceiling and damage the decoration. Therefore, it is
recommended that each unit should be installed with solenoid valves and thermostats. If the
solenoid valve is not installed, the hand valve must be closed when the unit is shut down to
prevent condensation.
(2) The function of the air filter is to remove harmful substances in the air, such as dust, soot, pollen
and other unclean substances. A filter that is too dirty not only cannot filter, but also reduces the
air volume of the unit due to the high air resistance, which affects its cooling (heating) capacity.
Therefore, it is necessary to check and clean the filter screen regularly. The cleaning cycle will be
different in different usage occasions, generally one month is appropriate; when the system is
operating at a high load or the environment is dirty, it should be maintained more frequently. The
method of cleaning the filter screen is: use a vacuum cleaner to remove the dust on the filter
screen that is not too dirty, and then install it back to the original place; for the dirty filter screen,
rinse it with water, and install it back to the original place after the filter screen is dry. The filter

5
must also be disinfected and sterilized regularly, at least twice a year, to prevent the growth of
colds and other germs.
(3) Dirty blockage of the surface cooler will seriously affect the cooling capacity. Use an elastic
nylon brush to clean the dirt between the fins (please do not damage the fins), and then use a
vacuum cleaner to suck off the dust on the surface cooler. Dirt can be blown off with compressed
air. Because the fan coil unit is generally equipped with an air filter when it is installed, if the
customer maintains it properly, the surface cooler generally does not need to be cleaned.
(4) Before the unit is in operation, it is necessary to check and remove the sundries in the water
receiving tray to ensure the smooth discharge of the condensed water of the unit.
(5) When the unit is in cooling operation, the chilled water temperature shall not be lower than 3°C;
when in heating operation, the hot water temperature shall not exceed 65°C (60°C is
recommended). When the unit is out of service, the system should be filled with water to reduce
corrosion, but in winter when it is not in use, the water in the system must be drained, and
antifreeze measures should be taken to avoid freezing and cracking.
PS: Untreated chilling water or cooling water may cause scaling, corrosion and bacterial growth in
the system; it is recommended to provide water treatment equipment.
8. Packing details
item
name
unit
quantity
1
Fan coil unit
set
1
2
User manual
piece
1