Thank you for choosing the ThinWall water fan coil. The products
strictly comply with design and production standards to provide
high quality operation, perfect performance, high reliability and
good adaptability.
These units are designed to operate at water temperatures
below 160°F. Operating at temperatures above 160°F may
result in severe damage to the product and void the warranty.
Read this installation and maintenance manual carefully before
installing and starting up the appliance. All repair or maintenance
work must be performed by the technical service department or
by professionally qualied personnel. Do not modify or attempt to
repair the appliance as this could cause serious injury and void
the manufacturer’s warranty.
This instruction manual must always accompany the appliance.
If it is lost or damaged, contact the local manufacturer technical
service center.
Failure to comply with these recommendations will void the
warranty.
• This appliance must be installed by an authorized installer.
• All repair or maintenance work must be performed by the
technical service department or by a professionally qualied
personnel.
• All repair or maintenance work must be performed in the
manufacturer’s specied period and times.
• Use genuine standard spare parts from the manufacturer for
any necessary repairs.
In case of water leaks, turn the master switch of the system to
“OFF” and close the water taps. As soon as possible call the
manufacturer’s technical service department or professionally
qualied personnel. Do not attempt to personally repair the
appliance.
If the unit is not used for a long time, you should:
• Power off the unit.
• If there is no anti-freeze protection, drain out the water.
Packing list
Figure 1
Vertical Water Fan Coil
Brackets
electrothermal
3-way valve
optional
Installation Template
m
m
5
6
1
8
2
mm
5
6
1
m
m
5
6
1
mm
65
1
8
2
~100
025
~100
025
mm
0
5
2
0
002
m
m
0
4
0
0
0
4
0
0
6
0
0
0
6
5
0
2
0
0
2
0
8
0
0
0
8
0
0
4
0
0
4
0
0
1
0
0
6
0
0
6
0
0
8
0
0
8
0
0
1
0
9
0
9
P
F
0
9
P
90
Toggle bolts
Remote controller
P
M
10:
50
0
00
TEM
P
MOD
E
O
N
/O
F
AN
FF
Manual
:
Screw
Feet
optional
Drain Pipe
Screw cap
Flexible Water
Connectors
Section 2: Safety Precautions
To prevent injury to the users and others and avoid damage to
the unit or other property, use the heat pump properly. Read this
manual carefully and understand the following information.
The following terms are used throughout this manual and bring
attention to the presence of potential hazards or to important
information concerning the product:
Indicates an imminently hazardous situation which,
if not avoided, will result in death, serious injury or
substantial property damage.
Indicates an imminently hazardous situation which,
if not avoided, will result in death, serious injury or
substantial property damage.
Indicates an imminently hazardous situation which,
if not avoided, may result in minor injury or property
damage.
Used to notify of special instructions on installation,
operation or maintenance which are important to
equipment but not related to personal injury hazards.
Code Compliance
Fan coil unit installation must conform to the requirements
of the local authority having jurisdiction, or in the absence of
such requirements, to the National Board of Fire Underwriters
regulations. Fan coil unit meets ETL listing requirement.
All electrical wiring must be in accordance with the National
Electrical Code ANSI/NFPA No. 70-latest edition and any
additional state or local code requirements. If an external
electrical source is utilized, the fan coil unit, when installed, must
be electrically grounded.
2
Page 3
Section 3: Specications
3.1 Specication Table
ModelUT-87UT-135UT-196UT-246UT-320
Heating Capacity*BTU/H870013500196002460032000
Water Flow RateGPM1.01.52.22.83.5
Pressure DropPSI1.51.83.84.04.1
Cooling Capacity**TONS1/41/23/411 1/4
Water Flow RateGPM0.81.51.92.63.3
Pressure DropPSI1.61.944.14.4
Air VolumeCFM94188270340381
NoiseDB (A)3032373941
Power Supply120V/1PH/60Hz
Power InputW1216202430
Water In/OutNPT3/4
DrainINCH5/8
Length
Net Dimensions
Shipping Dimensions
Net WeightLBS3544536273
Ship WeightLBS4051606879
* Heating: Entering Water Temp. 158°F
** Cooling: Entering Water Temp. 45°F
Width5 1/8
Height26 3/8
Length
Width7-1/8
Height28-11/16
INCH
INCH
27-5/835-3/843-5/1651-1/259-1/8
29-1/83744-7/852-13/1660-5/8
3.2 Working Conditions
(1) Heating ambient temperature: 41-84.2°F, Inlet water temperature: 95-158°F.
(2) Cooling ambient temperature: 48.2-95°F, Inlet water temperature: 41-68°F.
3
Page 4
Section 3: Specications (continued)
A
A
3.3 Overall Dimensions (Inches)
Figure 2 Product Model UT-87/135/196/246/320
5-1/8
26-3/8
29-3/16
Figure 3 Product Model UT-87/135/196/246/320
3-3/8
9-1/2
12-1/2
3-1/8
1-5/8
7-5/16
3-5/16
5-1/8
-3/8
-3/16
26
29
Unit Model
A(inch)
UT-87UT-135UT-196UT-246UT-320
27-1/2
35
-1/2
2
1-5/8
3-3/8
12-1/2
7-5/16
3-5/16
43-3/8
4
51-1/8
59-1/16
Page 5
Section 4: Installation
4.1 Installation Precautions
To ensure that the installation is performed correctly
carefully follow the instructions indicated in this manual.
Failure to follow instructions indicated not only can cause
malfunctions of the appliance but also void the warranty.
It is important that the electrical installation is made in
accordance with local codes, respects the data indicated
in the technical sheet and is correctly earthed.
The appliance must be installed in a position that allows
for routine maintenance, such as lter cleaning.
The system inlet water temperature must not exceed
160°F. Failure to comply can severly damage the unit and
will void the warranty.
4.2 Positioning the Unit
Avoid installing the unit in close proximity to:
-positions subject to exposure of direct sunlight
-in proximity to sources of heat
-in damp areas or places with probable contact with water
-in places with oil fumes
-places subject to high frequencies
Make sure that:
-the wall on which the unit is to be installed on is strong
enough to support the weight
-the part of the wall being used does not have pipes or
electric wires passing through
-is free of obstacles which could interfere with the inlet
and outlet air ow
-is preferably an outside perimeter wall to allow the
discharge of condensation outside.
4.3 Minimum Clearances
Figure 5 indicates the minimum mounting distances be-
tween the wall-mounted cooler-convector and furniture
present in the room.
Figure 5
Removal of Side Panel (Fig. 6)
Dismount the upper grill (Fig. 6 Ref. A) by unscrewing the
xing screws.
Lift the cover (Fig. 6 Ref. B) that protects the screw (Fig.
6 Ref. C) and unscrew it. Move the side panel slightly and
lift it out.
Figure 6
A
B
C
E
Wall installation or vertical oor
Using the paper template, trace the position of the wall
(Fig. 7). Use a suitable drill to make the holes with and
insert the toggle bolts (2 for each bracket) (Fig. 8 Ref. A);
afx the two brackets (Fig. 8 Ref. B).
Figure 7
e
in
l
k
ec
h
vel c
e
L
m
165m
ole
h
e
at
- 8 Loc
2
The distance from the ce nter of
165m m
locate hole t o the top ed ge of
165mm
0
0
re
a
d
e
t the space b e tw een two t em
the table re qu ir emen t whe n
025 to 100.
The distance betw een
two template s(mm )
wat
or
f
a
machine is
tween two te mpla tes
irement whe n
t the space b e
the table re qu
Make sure th a
100.
is accordin g to
installing PFP 025 to
plates
The distance betw een
two template s(mm )
Model
0
25
0
0
0
2
040
0
400
060
200
600
080
00
4
800
00
1
600
0
0
8
oor
fl
the
o
t
l
e
l
ral
a
P
ole
h
pe
i
p
r
e
Fold 90 degr ee al ong t his l ine
e
to th
l
e
all
ar
P
The bottom o f mac hine
90
oor
fl
09
3
0
3
2
0
0
0
0
e:2
d
o
c
te
a
mpl
e
t
P
F
P
ine
l
k
l chec
e
ev
L
L
8
2-
Water inlet h ole
without elec trot herm al 3- way v alve
Water inlet h ole
Water outlet hole
Condensatio n dra in ho l
bottom of ma chin e
The
oca
o
h
e
t
le
e
Fold 90 degr ee al ong t his l ine
90
The distance from the ce nter of
locate hole t o the top ed ge of
machine is 16 5mm
Make sure th a
according t o
is
installing PFP
Model
25
0
40
0
060
08
10
v
r
se
Re
3.54 inch
0.79 inch
0.79 inch
15.7 5inch
5.51 inch
Figure 8
A
B
5
Page 6
Section 4: Installation (continued)
4.3a Floor Installation
If installing the unit on the oor, the footing should be mounted (Feet shipped loose as optional equipment): First, lay down the unit and
match up the screw holes (Ref. Fig. 10 Item A/B/C/D), nally apply four screws to each side to afx the feet. (See Fig. 9 and Fig. 10).
Figure 9
Figure 10
A
B
D
C
6
Page 7
Section 4: Installation (continued)
fig.8
Do not over-tighten the screws so that the brackets can be adjusted with a spirit level (Fig. 11).
The fully tighten the four screws to block the two brackets.
Mount the unit, checking that it ts correctly onto the brackets and checking that it is stable (Fig. 12).
Figure 11
4.4 Water Connections
Refer to Fig. 13 and Fig. 14 to connect the inlet and outlet
lines.
Figure 13 shows optional 3-way valve.
Piping system should be clean.
Insulate the lines after making the connections.
Figure 12
Y type lter should be installed in the water inlet of
the unit.
Air release valve should be installed on top of the
hydraulic lines to avoid air retention.
Figure 13
Water outlet
with 3-way valve (optional)
Water inlet
with 3-way valve
Figure 14
Water outlet
Water inlet
7
Page 8
Section 4: Installation (continued)
Flexible water connector
Flexible water connector
Flexible water connector
Flexible water connector
Flexible water connector
Connection methods for exible water connectors
Figure 15 Connecting method I with valve (optional)
Flexible water connector
water outlet
Flexible water connector
water inlet
Figure 16 Connecting method II with valve (optional)
Flexible water connector
outlet
water
water
inlet
Figure 17 Connecting method I without valve
water outlet
inlet
water
Figure 18 Connecting method II without valve
water
outlet
water
inlet
8
Page 9
Section 4: Installation (continued)
4.5 Condensate Discharge
When mounting the condensation discharge device,
connect to the condensate collection tray discharge
union (Fig. 19 Ref. C) a pipe for the outow of the liquid
(Fig. 19 Ref. B) blocking it inadequately. The condensate
discharge network must be suitably sized (minimum
inside pipe diameter 5/8").
If the condensation needs to be discharged into a
container, it must be open to the atmosphere and
the tube must not be immerged in water to avoid
problems of adhesiveness and counter-pressure
that would interfere with the normal outow.
4.6 Evacuating air while lling the system
If there is no electric power and the thermo-valve has
already been powered use the special cap to press the
valve stopper to open it.
Start lling by slowly opening the water system lling tap.
Use a screwdriver to unscrew the side air vent valve (Fig.
20 Ref. A). When water starts coming out of the air vent
of the appliance, close them and continue lling until each
reaching the nominal value for the system.
Check the hydraulic seal of the gaskets.
It is advisable to repeat these operations after the appliance
has been running for a few hours and periodically check
the pressure of the system.
Figure 19
A
B
C
Figure 20
A
A
9
Page 10
Section 5: Start-Up and Operation
5.1 Control Functionality
(Orange)low fan
speed indicator light
(Yellow)medium fan
speed indicator light
(Blue)high fan
speed indicator light
HIGHLOWMID
M
Cooling indicator
HEATCOOL
light green
Heating indicator
light red
About buttons:
ON/OFF BUTTON.
Pressing this button will start up or shut down the unit.
Press this button and select the mode you want set:
M
Cooling mode: cooling indicator light stays on (green)
Heating mode: heating indicator light stays on (red)
Automatic mode: cooling indicator light and heating indicator light ashes in turn
Ventilating mode: cooling and heating indicator lights are off, the fan indicator light stays on according to the chosen fan speed
Dehumidifying mode: cooling indicator light stays on for 2 seconds and off for 1 second
Note: Changes of mode can only be done on main interface.
Press this button to set the fan speed
High fan speed: high fan speed indicator light stays on (blue)
Medium fan speed: medium speed indicator light stays on (yellow)
Low fan speed: low speed indicator light stays on (orange)
Automatic: high fan speed indicator light, medium fan speed indicator light and low fan speed indicator light ashes in turn
Note: Changes of fan speed can only be done on main interface. You cannot choose the automatic fan
speed when in ventilating mode. When in dehumidifying mode, the fan speed is xed at low speed.
Check the set temperature of unit by pressing this button once.
Increase the set temperature by pressing this button again.
Check the set temperature of unit by pressing this button once.
Decrease the set temperature by pressing this button again.
10
Page 11
Section 5: Start-Up and Operation (continued)
Indoor ambient temperature
5.2 Temperature Setting
When on the main interface of heating, cooling and
automatic mode, you can press or once to check
the set temperature. Press or again to increase or
decrease the set temperature. Press , or ON/OFF
button to change mode, fan speed or shut down the unit
and save settings.
or is invalid when the unit is in ventilating mode or
dehumidifying mode.
M
HIGHLOWMID
Pressor
to check the setting
temperature of
current mode.
HEATCOOL
M
Set temperature in heating mode
HIGHLOWMID
Pressor
to set the setting
temperature of
current mode.
HEATCOOL
M
11
Page 12
Section 5: Start-Up and Operation (continued)
Set temperature in heating mode
Pressto save settings
and change modes of the unit.
M
Pressto
save settings and
change fan speed.
HIGHLOWMID
M
System will save user's
HEATCOOL
setting and return back
to main interface if there
is no operation on buttons in 5s.
Press switch button to
save settings and shut
down the unit.
HIGHLOWMID
M
HEATCOOL
HIGHLOWMID
M
HEATCOOL
HIGHLOWMID
M
HEATCOOL
HIGHLOWMID
HEATCOOL
M
12
Page 13
Section 5: Start-Up and Operation (continued)
Ventilation Mode
MO DE
FA N
5.3 Using the Remote Control
Dehumidification Mode
Cooling Mode
Signal Emission
Wind Speed
Wind Direction
Time V alue
POWER ON/OFF
Mode Switch
Time Regulation
Wind Direction
Regulating Manually
Wind Direction
Regulating Automatically
LED Screen Light
Up or Not
Celsius Fahrenheit
Switch
Auto Mode
/
AU TO
Heating Mode
Sleeping Function
Temperature
AM
PM
TIME OFFTIME ON
Time Off
Wind Speed Regulation
Timing Start-Up
Fast Cool
Fast Heat
Timing Shut-Down
Set the Sleeping Function
Low Wind Speed
Medium Wind Speed
High Wind Speed
POWER ON/OFF
Press this key to start up or shut down the unit
Mode Switch
Press this key to switch the mode among Auto, Cooling, Dehumidifying, Ventilating and Heating.
Fan Speed
Press this key to switch the fan speed among High, Medium, Low and Auto.
Press this button to increase the set value.
Press this button to decrease the set value.
Take out the batteries if you do not use the remote control for a long period of time. Take out the batteries for 35
minutes if there is a failure in the program of the remote controller. After 35 minutes, replace the batteries and
the remote control should resume operation.
13
Page 14
Section 5: Start-Up and Operation (continued)
FA N
Functioning of “F.Cool” and “F.Heat”
By pressing the key “F.Cool”, the system will automatically
set to the cooling mode with high fan speed.
By pressing the key “F.Heat”, the system will automatically
set to the heating mode with high fan speed.
Time Setting
Press and hold the key
then you can adjust the current time value by press the
key “+” or “-“. To save the setting above, press the
key again.
Timing Start-Up or Timing Shut-Down
TIME ON/1 One hour after setting Timing Start-Up,
TIME OFF/1 One hour after setting Timing Shut-Down,
The range of timing is from 1 hour to 11 hours. If the
Sleep Function
(1) To start or cancel the sleep function, please press the
(2) The sleep function can only be set in the heating or
This key is available only when the unit is POWER
OFF, with no interruption of power supply.
the unit will automatically start up. The number shown
indicates amount of hours prior to start up.
This key is available when the unit is POWER ON.
the unit will automatically shut down.
setting value is over 11 hours, the time setting will be
cancelled.
key .
cooling mode.
until the time value ashes,
(3) When the sleep function is activated, the icon will
be shown at the top right corner of the LCD screen on
the remote. Meanwhile, the “TIME OFF” and “7” will be
shown at the lower right corner of the LCD screen. This
means the unit will automatically shut down 7 hours after
the setting. To change the timing number or to cancel the
timing function, press the key .
(4) 1 hour after setting the sleep function, the fan speed
will automatically change to the low fan speed. To change
the fan speed press
(5) 2 hours after setting the sleep function in the cooling
mode, the set temperature will increase 1°C or about 2°F
per hour.
(6) 3 hours after setting the sleep function in the heating
mode, the set temperature will decrease 1°C or about 2°F
per hour.
Switch to Celsius or Fahrenheit
Press the key.
LED Screen Light Up or Not
To illuminate or shut off the LED Screen press the key
Cut off power supply before cleaning or maintaining the unit.
To guarantee reliable service and comfort, it is suggested to maintain and clean the unit every 6 months.
Take the following steps to clean up the lter regularly:
(1) Lift the grill (A) upward (Fig. 21), then pull out the grill (Fig. 22).
(2) Remove the grill (Fig. 23 and Fig. 24) and take out lter (Fig. 25), then wash the lter with water (Fig. 26).
Figure 22 Figure 21
A
Figure 24 Figure 23
Figure 26 Figure 25
15
Page 16
Section 6: Maintenance and Trouble Shooting (continued)
(3) Set the lter net and the air return grill to the original place. (Fig. 27).
(4) Clean up the outer unit with a soft, damp rag (Fig. 28). To protect the paint-coat of the unit, do not use a rough sponge or
corrosive detergent.
Figure 28 Figure 27
6.2 Trouble Shooting
MalfunctionCodeCauseMeasures
Indoor ambient temperature sensorP4Ambient temperature sensor is
in open circuit or short circuit
Coil temperature sensorP5Coil temperature sensor is in
open circuit or short circuit
Motor feedback signalE0Feedback wire is not inserted
well or Fan motor failure
Check or replace the ambient temperature sensor
Check or replace the coil temperature sensor
Check the feedback wire or replace the motor
16
Page 17
Section 7: Wiring
7.1 Networking Wiring Diagram
MD1001
+12V
NET
GND
MD1001
+12V
NET
GND
MD1001
+12V
NET
GND
controller
Heat Pump
blue
KYIN
GND
yellow
MD1001 Electrical Control
Module of Vertical
Water Fa n Coil
+12V
NET
GND
NET communication
or on-line
KYIN
Remote on/ Off Signal
Input
GND
Grounding
Port
7.2 PCB I/O port
14
5
MD1001
CN2
TEMP1
NET1
CN1
N
OUT1
LN
OUT2
PROG1
17
Page 18
7.3 Wire Connection
Section 7: Wiring (continued)
Ambient Temperature
AT
CT
Coil Temperature
EV: Electromagnetic Valve
SS
BLU
CT
AT
FM
5K
t
5K
t
FMFan Motor
SS
Sensitive Switch
TCTransformer
MD1001
14
Controller
RED
BLK
WHT
YEL
BLU
BLU
BLK
WHT
RED
CN2
TEMP
WHT
CN7
NL
BLK
OUT1
NET
OUT2
L
L
N
Y/G
N
N
TC
ORG
24V
ORG
EV
TO POWER SUPPLY
110- 120V~/60Hz
SignalMeaning
CN2DC Fan Motor
OUT2*Output without connecting power, dry contact
CN1To wire controller (LED)
PROG1Program burn
TEMP1To ambient and coil temperature
OUT1To electromagnetic valve
LLive wire
NNeutral wire
NET1Communicate or On-line
*End switch to energy source
18
Page 19
Limited Warranty
ThinWall Fan Coil
The Manufacturer warrants to the original owner at the original installation
site that the Product will be free from defects in material or workmanship
for a period not to exceed ve (5) years from startup. If upon examination
by the Manufacturer the Product is shown to have a defect in material or
workmanship during the warranty period, the Manufacturer will repair or
replace, at its option, that part of the Product which is shown to be defective.
This limited warranty does not apply:
(a) if the Product has been subjected to misuse or neglect, has been
accidentally or intentionally damaged, has not been installed,
maintained or operated in accordance with the furnished written
instructions, or has been altered or modied in any way.
(b) to any expenses, including labor or material, incurred during removal
or reinstallation of the Product.
(c) to any workmanship of the installer of the Product.
This limited warranty is conditional upon:
(a) shipment, to the Manufacturer, of that part of the Product thought to
be defective. Goods can only be returned with prior written approval
from the Manufacturer. All returns must be freight prepaid.
(b) determination, in the reasonable opinion of the Manufacturer, that
there exists a defect in material or workmanship.
Terms and Conditions of Sale
Ordering
Send or fax all orders ($50.00 minimum billing) to:
Mestek
260 North Elm Street
Westeld, MA 01085
Tel. (413) 564-5530
Fax (413) 564-5815
Prices
Published trade prices in effect at time of receipt of order at our ofce
are rm provided the complete order is released by credit for fabrication
and shipment.
Terms
Payment terms are 2% 15 Prox. Net 16th.
Prepaid freight or cartage charges paid by us are not subject to cash
discount.
Taxes
The prices listed herein exclude Federal, State, or Municipal Tax applicable
to the transaction. Such taxes, where applicable to the transaction, should
be paid directly to the governing authority by the purchaser.
Valid Orders
An order is not valid until acknowledged by the Manufacturer.
Repair or replacement of any part under this Limited Warranty shall
not extend the duration of the warranty with respect to such repaired or
replaced part beyond the stated warranty period.
THIS LIMITED WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES,
EITHER EXPRESS OR IMPLIED, AND ALL SUCH OTHER WARRANTIES,
INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE,
ARE HEREBY DISCLAIMED AND EXCLUDED FROM THIS LIMITED
WARRANTY. IN NO EVENT SHALL THE MANUFACTURER BE LIABLE
IN ANY WAY FOR ANY CONSEQUENTIAL, SPECIAL, OR INCIDENTAL
DAMAGES OF ANY NATURE WHATSOEVER, OR FOR ANY AMOUNTS
IN EXCESS OF THE SELLING PRICE OF THE PRODUCT OR ANY PARTS
THEREOF FOUND TO BE DEFECTIVE. THIS LIMITED WARRANTY
GIVES THE ORIGINAL OWNER OF THE PRODUCT SPECIFIC LEGAL
RIGHTS. YOU MAY ALSO HAVE OTHER RIGHTS WHICH MAY VARY
BY EACH JURISDICTION.
The responsibility of this Company ceases upon delivery of goods in
good order to transportation companies. All orders are accepted subject
to delays on account of government requirements, strikes, accidents, or
other causes beyond our control.
Minimum Orders
Orders with an invoice of less than $50.00 will be invoiced at $50.00.
Returned Goods
Goods must not be returned except by written permission, from the
factory, and when so returned will be accepted only as stated in the
following conditions:
1. Special material is not subject to return.
2. All transportation charges for returned goods must be prepaid by the
shipper.
3. Standard catalogued products may be returned upon written permission.
After inspection at the factory, if they are found to be in good condition
they will be accepted for credit, subject to a 25% handling charge,
plus inbound and outbound freight.
4. No goods will be accepted for return more than 6 months after shipment.
Freight Terms
Within U.S.: less than $30,000.00 net: F.O.B., Farmville, North Carolina,
freight not allowed.
$30,000.00 net or higher: full freight allowed, except to Alaska and Hawaii.
Claims
As all goods are shipped at buyer’s risk they should be examined
carefully before signing transportation delivery receipts. If transportation
company tenders delivery of goods in bad order, buyer should insist on
transportation agent making notation of conditions on delivery receipt
and request an inspection within 48 hours, thus enabling buyer to
secure prompt payment of transportation claims led by him for value
of damaged material.
19
Page 20
IN UNITED STATES: 260 NORTH ELM ST. WESTFIELD, MA 01085 800-465-8558 / FAX (413) 564-5815