mundoclima MUCH-W9 User manual

DC HIGH PRESSURE DUCT FCU
CL04660 to CL04664
English
www.mundoclima.com
Installation manual and
information requirements
MUCH-W9

Table of Contents
1. Safety and User Information .....................02
2. Product Introduction ...........................05
3. Dimensions and Wiring diagram ................ 09
4. Inst allation ................................... 10
5. Commissioning ............................... 18
6. Maintenance and T roubleshooting ................ 21
Note:
All illustrations and contents in this manual are provided for information only. We will continuously
improve the products in aspects of product dimensions, performances, materials and
structures without prior notication.

2
Before carrying out any work on the unit, power the unit down to avoid injury from electrical current.
Check that the unit is isolated and ensure that the appropriate point of the unit for the on-
site power supply is secured against being switched back on.
DANGER OF SCALDING!
Before performing work on the valves or the inlet or outlet pipes, seal o󰀨 the heating or cooling
medium inlet to prevent scalding. Do not commence work before the heating medium has cooled
down.
DANGER OF ROTATING UNIT PARTS!
Rotating fan wheels can cause injury! Before performing any work on the unit, ensure that
it is powered down. Ensure that the appropriate point of the unit for the on-site power
supply is secured against being switched back on.
THE SAFETY INSTRUCTIONS AFTER ‘ LABLE ’ IS
CONSIDERED AS WARNING WHICH MEANS INCORRECT
OPERATION MAY RESULT IN SEVERE CONSEQUENCES OF
DEALTH OR SERIOUS INJURIES!
ELECTRICAL HAZARD!
Fan Coil Unit –Large Air Flow & High Static Pressure Type
1.Safety and User Information
Safety instructions
The Large Air Flow &High Static Pressure fan coil units are developed and manufactured
in accordance with the state-of-the-art technological standards and established technical
safety norms and regulations. The Large Air Flow & High Static Pressure fan coil units comply
with the Machinery Safety Directive.
The Large Air Flow & High Static Pressure fan coil units are reliable and satisfy high
quality standards. This product range combines advanced technology with ahigh level of user
friendliness and ease of maintenance.
However, all fan coil units inevitably pose residual risks of injury to the user or third parties
or material damage to the unit or other objects. For this reason, you should take into account
and follow all safety instructions. Ignoring these safety instructions is connected with risks to your
health and safety, can lead to the environmental damage and/or extensive material damage.
Observing the safety instructions in the operation manual will help you to avoid risks,
ensure economical operation of the unit and enjoy full benets of the product.
The safety aspects covered by this Chapter are valid for the entire operation manual. To ensure our
own safety consider the following safety instructions.

3
DANGER OF OVERHEAD LOADS!
Wear ahelmet and safety boots to prevent injury from falling components, especially when tting the
unit to the ceiling. Ceiling installations should always be performed by two people.
PERSONAL INJURY!
Always wear protective gloves when moving or tting the unit to avoid injury from sharp edges.
Important notes
The fan coil units are end units of chilled/hot water air conditioning system featuring high
profession and high technological requirement, therefore, the unit shall be installed, operated and
maintained only by qualied, specially trained and authorized sta󰀨.
Proper use
Large Air Flow &High Static Pressure fan coil units are exclusively designed for ventilating, hea-
ting, ltering and cooling purposes. Chilled water/Hot water may be used as the medium. The
following limit values apply to the medium for operating Cu/Al heat exchangers:
DAMAGE TO THE UNIT!
On open systems (e.g. when using well water observe the limit values stated in above table), the
used water should additionally be cleansed of suspended matter using alter which should be
located at the inlet. Otherwise there is arisk of erosion by suspended matter.
You also have to ensure that the unit is protected from dust and other substances that can cause
acidic or alkaline reaction when combined with water (aluminum corrosion).
– The Large Air Flow &High Static Pressure fan coil units may only be used indoors.
– The Large Air Flow &High Static Pressure fan coil units is suitable for ceiling installation. The
unit is considered to be used in an improper manner if it is applied for other purposes
or a purpose that is not covered by the scope of the given operation manual. The
manufacturer or supplier is not liable for any resulting damage: the user alone bears the full risk.
Fan Coil Unit –Large Air Flow & High Static Pressure Type
Unit Value
pH value (at 20 °C) 7,5 – 9
Conductivity (at 20 °C) μS/cm < 700
Oxygen content O2mg/l < 0,1
Total hardness °dH 1 – 15
Dissolved sulphur S not detectable
Sodium Na+mg/l < 100
Iron Fe2+, Fe3+ mg/l < 0,1
Manganese Mn2+ mg/l < 0,05
Ammonium content NH4
+mg/l < 0,1
Chloride Cl-mg/l < 100
Sulphate SO4
2- mg/l < 50
Nitrite NO2
-mg/l < 50
Nitrate NO3
-mg/l < 50

4
Fan Coil Unit –Large Air Flow & High Static Pressure Type
The user is responsible for proper use. Proper use also stipulates the observance of the operation
manual and the inspection and maintenance conditions dened by the manufactures.
Improper use
The Large Air Flow &High Static Pressure fan coil may not be operated:
– In locations where there is arisk of explosion
– In wet areas or
– In locations with high dust levels or aggressive air.
PERSONAL INJURY & MATERIAL DAMAGE!
Improper use can cause personal injury and material damage.

5
Fan Coil Unit –Large Air Flow & High Static Pressure Type
2.Product Introduction
Features and benets
The fan coil units have become ahall mark for de-central air treatment, with top levels of comfort
and truly impressive cost-e󰀨ectiveness. Aselection of our versatile fan coil units assures that we
o󰀨er you the perfectly matching product solution for each of your individual requirements.
Practical Orientation
The fan coil units o󰀨er an extensive portfolio of solutions for all applications involving de-central air
handling.
E󰀨ectiveness
The Large Air Flow &High Static Pressure fan coil units guarantee cosy and comfortable room
atmosphere.
Space savings
The Large Air Flow &High Static Pressure fan coil units’ compact design assures optimal use of
available space by their design and installation possibilities.
Flexible
Depending on the model type, the customer enjoys aselection among possibilities of media
connection to the heat exchangers- as well as the possibility of implementing heating and cooling.
Quietness
Sophisticated systems mean that the Large Air Flow &High Static Pressure fan coil units are cha-
racterize by aminimum of noise emission.
Functionality
The Large Air Flow &High Static Pressure fan coil units o󰀨er highly functional controller concepts
and optimal interfacing with building management systems
Stylishness
The modern appealing design of the Large Air Flow &High Static Pressure fan coil units is truly
impressive.
Cost e󰀨ectiveness
The Large Air Flow &High Static Pressure fan coil units have become the e󰀨ective stan-
dard solution in many and various industrial segments for comfortable economical air conditioning.
Protability
The Large Air Flow &High Static Pressure fan coil units operate with low maintenance
and follow-up costs.

6
DAMAGE TO THE UNIT!
1. Unit casing (top) 11. Terminal block
Please refer to unit nameplate to know the right power supply! Wrong power supply may damage
the motor and unit permanently!
Unit Components
2. Coil
3.
Coil frame casing (lateral)
4. Water inlet/outlet connector
5. Connector xing panel
6. Fixing frame
7. Unit casing (bottom)
8. Unit casing (lateral)
9. Drain pan
10. Electrical box base
12. PCB
13. Electrical box cover
14. Fan shell
15. Fan motor
16. Fan motor
17. Plenum casing (lateral)
18. Chute
19. Plenum casing (back)
20. Plenum casing (top)
Note:
Above exploded view is used for illustrative of unit construc tion onl y, it ma y be di󰀨erent from the unit you received, please
refer to the
unit itself.
Specications
Please refer to specication sheet in next pages.
Fan Coil Unit –Large Air Flow & High Static Pressure Type

7
Fan Coil Unit –Large Air Flow & High Static Pressure Type
Specication 2 Pipe system
* Note:
1. Nominal Testing condition:
Cooling: entering air temp 27°C DB/19.5°C WB; entering water temp 7°C, leaving water temp 12°C;
Heating: entering air temp 21°C; entering water temp 60°C, the same water ow as in cooling;
2. Sound pressure level are measured in acoustic room, position of the measure point is 1m in the front and 1m below the vertical center line of
the unit;
3. Static pressure is measured without lter and air outlet.
Specication Model MUCH-24-W9 MUCH-30-W9 MUCH-40-W9 MUCH-54-W9 MUCH-71-W9
Air Flow
HCFM 800 1000 1400 1500 2000
m3/h 1360 1700 2380 2550 3400
MCFM 696 870 1218 1305 1740
m3/h 1183 1479 2071 2219 2958
LCFM 592 740 1036 1110 1480
m3/h 1006 1258 1761 1887 2516
Total Cooling Capacity
kW
H 7.00 9.00 12.00 16.00 21.00
M 6.09 7.83 10.44 13.92 18.27
L 5.25 6.75 9.00 12.00 15.75
Sensible Cooling
CapacitykW
H 5.19 6.68 8.90 11.87 15.58
M 4.36 5.61 7.48 9.97 13.09
L 4.00 5.14 6.86 9.14 12.00
Heating Capacity
kW
H 10.50 13.50 18.00 24.00 31.50
M 9.14 11.75 15.66 20.88 27.41
L 7.88 10.13 13.50 18.00 23.63
Power Input W 196 238 273 329 448
Rated Current A 0.9 1.1 1.2 1.5 2.0
Max Current A 1.1 1.3 1.4 1.8 2.4
Static Pressure Pa 150
Noise Level
dB(A)
L 49 50 52 55 57
M 52 53 55 58 60
H 55 56 58 60 63
Water Flow kg/h 1204 1548 2064 2752 3612
l/s 0.334 0.430 0.573 0.764 1.003
Water Resistance kPa 28 32 35 38 40
Fan Type Forward curve centrifugal fan
Motor
Type EC Motor
Insulation Class B
Power Supply 220~230V/1Ph/50
Coil
Type Seamless copper mechanically expanded into aluminum ns
Rows 3 4
Max. Working Pressure 1.6 MPa
Inlet/Outlet Water Pipe ZG3” /4 1” MPT 1 1/4” MPT
Condensate Water Pipe 3/4” MPT
Unit Dimension mm(W/D/H) 1080*600*280 1280*600*280 1680*600*280 1780*600*280 2180*600*280
Packing Dimension mm(W/D/H) 1120*640*320 1320*640*320 1720*640*320 1820*640*320 2220*640*320
Unit Weight kg 40 47 52 58 65
Gross Weight kg 46 54 60 67 73

8
Fan Coil Unit –Large Air Flow & High Static Pressure Type
Air ow volume chart against external static pressure

2200
B: Black, BL: Blue, R: Red, Y: Yellow, RG: Red & Green, TS: Fan speed controller, M1/M2: Motor.
Hi: High, Me: Medium, Lo: Low, E: Earth line, L: Phase, N: Neutral
* Note:
1. Wiring speed terminals to speed controller.
2. Components in dashed part may not exist in some models.
9
Fan Coil Unit –Large Air Flow & High Static Pressure Type
3. Dimensions and Wiring diagram
Dimensions
Wiring diagram
NOTE!
-Before carry out any wiring connection, always refer to the wiring diagram sticked on the
back cover of the electric sheet box for the right information.
-In order to protect the thermostat or three speed switch, it is recommend to install
relay/contactor as indicated in above wiring diagram.
198203

10
Fan Coil Unit –Large Air Flow & High Static Pressure Type
4. Installation
Checking and acceptance
Each fan coil is packaged in corrugated cartons/wooden framed package to avoid damages during
transportation, handling and site placement. To make sure no damages occurred due to
transportation, please follow below steps to check upon receiving the equipment:
a) Before acceptance, please check if each unit shows any abnormal facts, if carton edges and
corners are in good conditions and if there are obvious carton damages;
b) For any obvious carton damages, please immediately unpack to inspect the unit itself. If the unit
is indeed damaged, please indicate on the receipt and refuse to accept. Please also
check accessories;
c) Check hidden damages of the unit;
d) If any hidden damage is found, do not move the unit on the site. The receiver has the
obligation to evidence such damage does not occur after delivery. Meanwhile, please stop
unloading and take photos for reference;
e) If damages are found, please notify the carrier, and request the carrier and the receiver to
conduct ajoint inspection;
f) Do not repair it yourself before inspection and conrmation by the carrier representative has
been made;
g) After conrmation of damages, please contact related persons for replacement.
Transport
DAMAGE TO UNIT AND PERSONAL INJURY!
- Use protective gloves to avoid injury due to sharp edges.
- Ensure that at least two people carry the fan coil to avoid injury.
- In case of deliveries on pallets, use only lifting and transport vehicles with su󰀩cient
carrying capacity.
- Secure the load during transit to prevent it from tipping or falling.
4.2.1 Transport unit
The fan coils should only be transported and lifted from both sides at the top of the basic unit body,
or to be lifted by forklift. Refer to below indication.
In case of lifting/transportation by forklift, always use the unit base frame or the pallet supplied as

100 300
150 250
11
Fan Coil Unit –Large Air Flow & High Static Pressure Type
the supporting surface during transportation.
When transporting the unit using aforklift, both side of the unit must be resting on the forks. The
centre of gravity and load distribution must be taken into account.
Prepare for Installation
DANGER FROM ELECTRICAL CURRENT!
- Ensure that the intended drilling area is free from electrical cables or pipes before drilling.
PERSONAL INJURY!
- Injury may be caused by falling parts and sharp edges!
- Wear ahelmet, safety boots and protective gloves when installing the unit. Ceiling installations
should always be performed by two people.
NOTE!
-You must ensure that no mechanical deformations or twisting occurs during ins-
tallation of all models in all installation locations.
Installation location
The type, condition and ambient temperature of the installation location must be suitable for the
relevant fan coil unit (See Section 1.2.1 and Section 1.2.2). Consider the following points:
– Ceilings or mounting systems must be capable of bearing the weight of the unit, including all
accessories.
– Install the unit only in enclosed spaces indoors.
NOTE!
-Make all wall and ceiling openings in conjunction with an architect or stress analyst and
the building contractor.
Recommended Service space (Basic Unit Body)
In order to carry out all necessary service and maintenance work on the basic unit it is
recommended that a service opening with the minimum dimensions as shown in below gure is
installed in the false ceiling.

12
Fan Coil Unit –Large Air Flow & High Static Pressure Type
NOTE!
-Please consider that in case of further mounted accessories more or larger openings may
be necessary.
Fitting space
Depending on the model and installation, the pipes may be connected from left or right.
The following tting distances of Main Unit Body should be observed for Large Air Flow &High
Static Pressure type fan coil units.
NOTE!
-Make sure there are adequate spaces reserved for installation of pipes, valves, wiring
connections etc. Above indicated tting space is for illustrative reference only and
bigger tting space should be reserved if not sure about the installation convenience or
accessibility of the connections.
Unit installation
Precautions
To ensure good installation and operation, do check the following items before installation of the
unit:
a) Adequate space shall be provided for installation and maintenance of the unit. Please refer to
Unit Dimensions and also section 4.3.2 and 4.3.3, Removable ceiling panels or accesses shall be
provided for daily maintenance;
b) Determine locations of pipelines and electric wires before installation; and adequate tting
space should be reserved. Kindly refer to section 4.3.3; c) Make sure hanging
structure adequate to support the unit weight; d) All units shall be leveled to
ensure smooth water drain and proper operation;

13
Fan Coil Unit –Large Air Flow & High Static Pressure Type
e) The unit connecting air duct shall be within the external static pressure scope; f) Thermal
insulation of chilled water valves and pipelines shall be made by the installer.
Hanging or xing (Ceiling installation)
Please refer to dimensions in section 3.1 to know the unit external dimension, air inlet/outlet
connection dimension, hanging/xing holes dimension. Duct connection is also possible please
refer to section 4.4.3.
NOTE:
-The ceiling type fan coils can be mounted either directly under the ceiling or suspended,
using appropriate means.
-In order to ensure complete removal of condensate from the condensate tray according to
the hygiene regulations, cooling units are recommended to be installed with a5mm slope
in the direction of the condensate drain and 0-2 mm in the direction of the unit front
side.
Keyholes are provided at the side of the rear panel for securing the units (2 for each
side). Depending on xing type you will need suitable xing material.
At least four drill holes are required for ceiling installation (two on each side).
- Transfer the drilling measurements to the ceiling.
- Insert the screws.
- Hang the ceiling type fan coil into the keyholes.
- Use aspirit level for precise vertical and horizontal alignment of the fan coil and tighten the
screws. (Pay attention to the tilt of cooling units!)
Duct connection (ceiling concealed installation)
Air ducts made of galvanized steel sheet of certain thickness (provided by the installer) may be
connected to the anges/connections at air inlet/outlet of the unit. Refer to Unit Dimensions
in section 3.1. Insert air ducts into anges and x with screws. If air duct and ange have di󰀨erent
sizes, they should be connected through a site-made adapter. Connection of air supply
cabinet and air duct: insert air duct into ange and x them horizontally with screws or rivets.
Same for connection of return air box.
For the ceiling concealed unit without return plenum a return air box is recommended as shown
below. The air return box/duct or air outlet duct showed below which should be respected for all
ceiling concealed type fan coil unit.

14
Fan Coil Unit –Large Air Flow & High Static Pressure Type
The distance from air duct outlet to fan coil outlet shall depend on actual air duct length and static
pressure terminal applied.
NOTE!
-Always make sure the duct length is in accordance with the static presure of the unit.
-Pipe connection
DANGER OF SCALDING BY ESCAPING HEATING
MEDIUM!
Before the on-site piping and the fan coil hydraulic connection is set up, the heating/cooling water
should be isolated and secured against being opened unintentionally.
NOTE!
-All on-site pipes by others for the cooling medium must be insulated against condensate
formation. If the pipes are run close to the lateral condensate tray, they should be
isolated above the lateral condensate tray by others on-site.
-When all connections have been completed, all screw connections should be tightened
and checked that they are free of mechanical stress.
-In order to ensure cleaning or disassembly of the heat exchanger according to the
hygiene guidelines appropriate measures shall be taken so that medium connections at
the heat exchanger could be disconnected at any time.
Valve connection
The units are supplied without valves, In case of installation with valves by others, the installation
of
the water inlet and outlet depends on the location of the medium/water connection and/or the
used
valves.
Below showed Pic. indicate the connection of a 2-way valve and 3-way valve to the units.

15
Condensate
Fan Coil Unit –Large Air Flow & High Static Pressure Type
2-Way valve 3-Way valve
Water inlet/outlet pipe connection
Please refer to below illustrative piping connection pic. for piping work. In case of use of 3-way
valve please refer to section 4.5.1 to know right connection between water inlet/outlet pipe
and 3-way valves.
Outlet
Inlet
Stop Valve 2-Way Valve Flexible connection
NOTE!
-Water inlet in lower position while water outlet in higher position, refer to connection
ttings indication sticked on side of unit.
-Flexible connection must be used and connected to water inlet/outlet ttings.
-Stop valves must be installed in water inlet/outlet pipeline.
-Air discharge valve must be installed in the highest position of the water system.
-Water discharge valve must be installed in the lowest position of the water system.
NOTE!
During tting, the connection nut on the heat exchanger should be countered using a sui-
table tool.
-At the beginning of the tting procedure, remove the caps of the water inlet and outlet
pipes.
-Fit the connections, ensuring they are free of mechanical stress.
In the chilled water piping system, pipes and all valves must be tted directly above the lateral
condensate tray to drain the condensate that forms on the pipes during cooling operation into the
condensate tray.

16
Fan Coil Unit –Large Air Flow & High Static Pressure Type
- Note the specications in section 2.5 to know the dimension of ttings.
- Run the pipes at aright angle to the side or to the rear.
- Seal the connections.
- Screw on the connections.
Condensate water pipe connection
In order for the condensate to be drained o󰀨 properly, the condensate drain by others must be
connected to the lateral condensate tray.
- Run the condensate drain at an angle/slope.
- When connecting the condensate drain to the wastewater system, observe the wastewater
regulations (stench trap).
NOTE!
-Condensate drains must always be positioned at asu󰀩ciently steep angle!
(Recommend 1:100). When running pressureless pipes or draining outdoors, no stench
trap is required.
-The onsite condensate drain line is to be connected to the connector of the condensate
tray in astress-free way.
-To avoid dew formation during cooling, chilled water pipe and condensate pipe must be
thermally insulated with careful treatment at insulation ends.
NOTE!
-After the installation, the condensate tray must be cleaned to make sure e󰀩ciency
drainage.
4.6 Electric Wiring
DANGER FROM ELECTRICAL CURRENT!
- The electricity shall be disconnected before make any installation work.
- The electrical installation of the air treatment unit must only be carried out by qualied
electricians in observance of this operation manual.
- The electrical connection of fan coil units must be performed in accordance with the valid
connection diagrams. The connection diagram is located on the side of the sheet electric
control box.
- The earth point provided on the unit shall be connected to the grounding system of the
building.
- All electric connections shall comply with local electric regulations.
- The connection diagrams do not contain any protective measures. During connection, the
standards and regulations currently in force must be observed and cleared with the local
electricity company.

17
DAMAGE TO THE UNIT!
- Wrong wiring connection may cause permanent damage to fan motors
- Make wiring according to the indication on the wiring diagram sticked on the back of elec. box.
NOTE!
-Please make the correct wiring of motorized 2-way or 3-way valve and thermostats in
according to its installation instructions and make correct linkage between the units.
5. Connection Side Change Guidance
Fan Coil Unit –Large Air Flow & High Static Pressure Type

18
Fan Coil Unit –Large Air Flow & High Static Pressure Type
5.Commissioning
ELECTRICAL HAZARD!
Before carrying out any work on the unit, power the unit down to avoid injury from electrical current.
Check that the unit is isolated and ensure that the appropriate point of the unit for the on-site
power supply is secured against being switched back on.
DANGER OF SCALDING!
Before performing work on the valves or the inlet or outlet pipes, seal o󰀨 the heating or cooling
medium inlet to prevent scalding. Do not commence work before the heating medium has cooled
down.
DANGER OF ROTATING UNIT PARTS!
Rotating fan wheels can cause injury! Before performing any work on the unit, ensure that
it is powered down. Ensure that the appropriate point of the unit for the on-site power su-
pply is secured against being switched back on.
Requirements for commissioning
After installation, the installers shall re-inspect and conrm the following items have been made.
This manual has been carefully read through. Operators are generally familiar with the unit and
can operate it.
- The fan coil is electrically isolated.
- The entire fan coil system has been installed both mechanically and electrically.
- Air ducts have been completely connected and rmly installed;
- All medium/water pipes have been rinsed and are free from residues and foreign objects.
- The system is properly pressurized (Recommended test pressure 2.4Mpa and more than
10min) and then lled with clean medium/water.
- Check that the fan coil is properly xed and mounted (on the wall, ceiling or on the oor).
- Manually check if valves, actuators thermostats are secured according to its operation manual.
- Tighten all medium/water screw connections.
- Check all electric connections using current wiring diagrams and check terminal strip screws for
correct tight seat.
NOTE!
Before commissioning, ensure that
-the unit discharge (heat exchanger),
-the condensate trays and the condensate pump intake area
-and the lter medium are clean.
If necessary, these components may have to be cleaned or the lter medium changed.
NOTE!
- For rst water lling, the fan coil pipeline may retain some air, which will be nally en-
trapped at top of the water system. A manual discharge valve is provided at the water .
18

19
Fan Coil Unit –Large Air Flow & High Static Pressure Type
outlet joint of the water system. When abnormal noise is heard due to residual air in the
water system or coil, turn the discharge valve knob to release the air. If the knob is too
tight, you may use apair of pinchers to turn it anticlockwise until water ows out of the
valve steadily, and then tighten the knob again.
Startup
The fan coil usually is controlled by athermostat which can on/o󰀨 the unit, change the fan speed
and also the water valve.
Switch on the power and follow the operation indication of the thermostat to operate the unit one by
one working in high/mid/low speed.
Adjust the air outlet grill, setting fan speed and water ow to reach best cooling/heating e󰀨ect. In
case of abnormal noise or behavior, switch o󰀨 the unit and recheck the previous mentioned
items. Otherwise it is recommended to set the unit working in high speed for 24 hours and recheck
the unit behavior again.
NOTE!
-After the commissioning, in case of non-use in winter season, water inside the unit shall
be drained to avoid pipe cracks due to ice formulation.