Polar Air Coanda Series Setup guide

SK2018 CHV2-V/P-ECM-001

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SK2018 CHV2-V/P-ECM-001
INVESTING IN QUALITY, RELIABILITY & PERFORMANCE
ISO 9001 QUALITY
World Leading Design and Technology
Every product is manufactured to
meet the stringent requirements of
the internationally recognized ISO
9001 standard for quality assurance in
design, development and production.
Equipped with the latest air-conditioning test rooms
and manufacturing technology, we produce over
50,000 fan coil units each year, all conforming to the
highest international standards of quality and safety.
CE SAFETY STANDARDS
The Highest Standards of Manufacturing
All products conform to the Certificate
Europe directives (Machinery Safety,
Electromagnetic Compatibility and
Low Voltage), as required throughout
the European Community, to
guarantee correct standards of safety.
In order to guarantee the very highest standards
and performance, we manage every stage in the
manufacturing of our products. Throughout the
production process we maintain strict control,
starting with our extensive resources in research
and development through to the design and
manufacture of almost every individual
component, from molded plastics to the assembly
of units and controllers.
EUROVENT CERTIFICATION
Quality Controlled from Start to Finish
Our highly trained staff and strict quality control
methods enable us to produce products with an
exceptional reputation for reliability and
efficiency, maintained over many years. As well as
CE certification and ISO 9001, several products
ranges have UL / ETL safety approval in the USA
and Canada, Eurovent performance and sound
certification as well as ROHS compliance for
Europe, giving you the confidence of knowing our
company is the right choice when selecting fan
coil units.
WEEE MARK
All products conform to the
“WEEE” directive to guarantee
correct standards of
environmental solutions.
ALWAYS MAKE SURE THIS MANUAL REMAINS WITH THE UNIT. READ THIS MANUAL BEFORE PERFORMING ANY
OPERATION ON THE UNIT.

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SK2018 CHV2-V/P-ECM-001
Table of Contents
A. Technical Data...................................................................................................................................................................... 5
A.1. General Description ....................................................................................................................................................... 5
A.2. General Specifications.................................................................................................................................................... 6
A.2.1. 2-Pipe Systems........................................................................................................................................................ 6
A.2.2. 4-Pipe Systems........................................................................................................................................................7
A.3. Coil Data........................................................................................................................................................................ 8
A.4. Dimensional Drawings ................................................................................................................................................... 9
A.5. Sound power data........................................................................................................................................................ 10
A.6. Valve Information ........................................................................................................................................................ 13
B. Installation .........................................................................................................................................................................15
B.1. Safety Precautions ....................................................................................................................................................... 15
B.2. Standard Configurations and Accessories..................................................................................................................... 16
B.3. Operating Limits .......................................................................................................................................................... 17
B.4. Before Installation........................................................................................................................................................17
B.5. Installation Location..................................................................................................................................................... 18
B.6. Installation and False Ceiling Clearance........................................................................................................................ 18
B.7. Pipe Works................................................................................................................................................................... 19
B.8. Condensate Drainage Connection ................................................................................................................................ 19
B.9. External Drain Pan Installation .....................................................................................................................................20
B.10. Valve Installation........................................................................................................................................................ 21
B.11. Fresh Air and Branch Duct Connection........................................................................................................................ 22
B.12. Suspension Bolts Layout and Ceiling Opening............................................................................................................. 24
B.13. Suspension Installation............................................................................................................................................... 26
B.14. Interconnecting Wiring............................................................................................................................................... 27
C. Maintenance ...................................................................................................................................................................... 28
C.1. For Units Out Of Use for an Extended Period. ............................................................................................................... 28
C.2. Extra Maintenance....................................................................................................................................................... 28
C.3. Air Vent and Water Purge Valve ................................................................................................................................... 28
C.4. Filter Removal and Cleaning......................................................................................................................................... 29
C.5. Control Box Replacement .............................................................................................................................................29
C.6. Condensate Drain Pump and Float Switch Replacement ...............................................................................................30
C.7. Fan Deck or Coil Assembly Replacement....................................................................................................................... 31
C.8. Motor and Fan Blower Replacement ............................................................................................................................ 32
C.9. Electric Heater Replacement ........................................................................................................................................32
D. Control Specifications: Complete Function PCB –S Type Control.......................................................................................33
D.1. I/O Port Definitions ......................................................................................................................................................33
D.2. Wiring Diagram ........................................................................................................................................................... 34
D.2.1. Standard EC-S1 Control PCB ..................................................................................................................................34
D.2.2. Master Slave Networking Wiring Diagram:............................................................................................................35
D.3. Configuration Settings ................................................................................................................................................. 36

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SK2018 CHV2-V/P-ECM-001
D.4. Control Logic For 2-Pipe System ................................................................................................................................... 38
D.4.1. With Valve Configuration ......................................................................................................................................38
D.4.2. Without Valve Configuration................................................................................................................................. 40
D.5. Control Logic For 4-Pipe System ................................................................................................................................... 41
D.6. Sleep Mode.................................................................................................................................................................. 43
D.7. Auto Fan Speed............................................................................................................................................................ 43
D.8. Modulating Valve Control Under Energy Saving Mode ................................................................................................. 43
D.9. Buzzer..........................................................................................................................................................................44
D.10. Auto Restart............................................................................................................................................................... 44
D.11. On/Off Switch On LED Display .................................................................................................................................... 44
D.12. Drain Pump................................................................................................................................................................ 44
D.13. Float Switch ...............................................................................................................................................................44
D.14. Electric Heater Safety Switch......................................................................................................................................44
D.15. Low Temperature Protection of Indoor Coil in Winter ................................................................................................. 45
D.16. LED Display and Error Description .............................................................................................................................. 46
D.17. LED Display on Master/Slave connection.................................................................................................................... 47
E. Networking System ............................................................................................................................................................ 48
E.1. Master-Slave Network.................................................................................................................................................. 48
E.1.1. Master Unit Control Settings .................................................................................................................................48
E.1.2. Master-Slave Network Setup................................................................................................................................. 49
E.1.3. Master-Slave Communication Method ..................................................................................................................51
E.2. Open Modbus protocol................................................................................................................................................. 52
F. Control Specifications: Flexible Function PCB –W-Type Control.........................................................................................55
F.1. Features ....................................................................................................................................................................... 55
F.2. I/O Port Definitions ....................................................................................................................................................... 55
F.3. Onboard configuration ................................................................................................................................................. 55
F.4. Wiring Diagrams........................................................................................................................................................... 56
F.5. Control Logic Specifications .......................................................................................................................................... 58
F.5.1. Unit Power ON/OFF ............................................................................................................................................... 58
F.5.2. Alarm Protection and Error Display ........................................................................................................................58
F.5.3. Drain Pump Operation ...........................................................................................................................................58
F.5.4. Modulating Signal Input.........................................................................................................................................58
F.5.5. Electrical Heater Operation.................................................................................................................................... 58
F.5.6. Low Temperature Protection of Indoor Coil in Winter ............................................................................................58
F.6. LED Display and Error Description ................................................................................................................................. 59
G. User Interface .................................................................................................................................................................... 60
G.1. Remote Handset .......................................................................................................................................................... 60
G.2. Wired Wall Pad Controller............................................................................................................................................ 61
H. Sensor Resistance R-T Conversion Table ............................................................................................................................65
I. Troubleshooting ..................................................................................................................................................................67

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SK2018 CHV2-V/P-ECM-001
Model Code Nomenclature
CHV2
-
01
-
V
S
-ECM
ECM
EC Motor Configuration
S
Complete function on board PCB with
integrated group control functionality.
W
Flexible function on board PCB with
drain pump and zone control
functionality.
P
Chilled/Hot Water, 4-Pipe
V
Chilled/Hot Water, 2-Pipe
VEH
Chilled Water, 2-Pipe with Electric
Heater
01-03
Unit Sizes. See General Specification
section A for cooling and heating
capacities
CHV2
Coanda Effect Hydronic Series

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SK2018 CHV2-V/P-ECM-001
Technical Data
General Description
CHV2 units generate an airflow with “Coanda” effect due to particular air handling section. The unit is suitable for
installation in a suspended ceiling. Air intake is from the bottom while the air supply is parallel to the ceiling through
practical and functional intake and outlet grilles. The “Coanda” effect creates excellent circulation of air inside the room.
A condensate pump is supplied as standard part.
Construction
Cases are constructed of galvanized sheet steel with integral fan mounting rails for added strength. Fire resistant
insulation is fitted internally and externally provide both thermal and acoustic insulation.
Round diffuser
The Coanda unit is supplied with round diffusers suitably designed to generate an air flow with “Coanda” effect. The
direction of diffuser air flow can be adjusted on site.
Chilled water coil
Constructed with seamless copper tubes and headers. The tubes are mechanically expanded into corrugated aluminum
fin material for a permanent primary to secondary surface bond. Coils are tested at 25 bar and recommended for
operation at 8 bar. Coils include manual air vent and water purge.
Fan
The backward-curved centrifugal fan is statically and dynamically balanced for quiet operation. Fan impellers are made
from fire-retardant plastic for lightweight and corrosion-resistant operation.
EC motor
The unit is using EC motor include driven controls PCB, a constant torque, permanent magnet, brushless EC motor with
preliminary 3-speed setting that allow for precise air balancing.
Condensate pump
A condensate pump is fitted to carry water out of the unit. The pump can be withdrawn from the side casing by removing
screws. A float switch is fitted to stop the cooling action, should the pump become blocked or fail.
Fresh air
The fresh air system for CHV2 unit allows up to 15% of unit airflow (maximum air flow per connection is 100m3/h) as
fresh air intake (per connection). Maximum 2 fresh air connections per unit are allowed.
Filtration
The standard filter is easily removable, is washable and is made from self-extinguishing acrylic with an efficiency of class
G2(EU2).
Microprocessor controls (EC-S1 type)—The PCB (printed circuit board) microprocessor control board relays control the
operation of the indoor fan motor, water valves and electric heater (if fitted), maintain room conditions at a user-defined
set point. Temperature settings, fan speeds and other control functions can be changed by the infrared handset or wired
wall pad.
Electro-mechanical controls (EC-W1 type)—A 230VAC signal from the thermostat which working power is from L and N
or from indoor room to terminal H/M/L supplies power to limited PCB. When any of H/M/L is powered ON, the stepping
motor is working and open the louver at maximum position. When all of H/M/L is powered OFF, the stepping motor will
close the louver. The condensate pump will run continuously, as long as coil temperature is less than 15°C. Alarm
notification and zone control function are available. 40 VA 24 VAC transformer is equipped with unit optionally, which is
used to supply 24 VAC power to thermostat and modulating valve.

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SK2018 CHV2-V/P-ECM-001
General Specifications
2-Pipe Systems
Product range: CHV2 Coanda Effect Hydronic unit 2-pipe with EC motor
CHV2-[Size]-V~-ECM
1
2
3
Unit
Configuration
Configuration
2-pipe
Number Of Fan Blowers
Single
Twin
Power Supply
(V/Ph/Hz)
230 / 1 / 50
220 / 1 / 60
Operation Control
~S: Complete function on board PCB with integrated group control functionality.
~W: Flexible function on board PCB with drain pump and zone control functionality.
Performance Data
Air
Total Air
Flow
H
m3/hr
287
365
524
M
220
288
373
L
150
230
290
Cooling
Cooling
Capacitye
H
kW
1.64
2.07
3.03
M
1.26
1.73
2.36
L
0.98
1.5
1.99
Sensible
Cooling
Capacitye
H
1.17
1.46
2.13
M
0.88
1.21
1.63
L
0.67
1.04
1.36
Latent
Cooling
Capacity
H
0.47
0.61
0.9
M
0.38
0.52
0.73
L
0.31
0.46
0.63
FCEERe
Rating
94.37
143.92
173.63
Class
C
B
B
Heating
Heating
Capacitye
H
kW
1.62
2.13
3.09
M
1.33
1.8
2.41
L
0.99
1.51
1.97
Max. Electric Heater Capacity
0.75
1
1.5
FCCOPe
Rating
97.06
146.68
175.8
Class
D
C
B
Sound
Sound Pressure Level ( Outlet )
dB(A)
40/34/30
36/33/27
44/35/28
Sound Power Level ( Outlet ) e
52/46/39
47/42/37
54/46/38
Electrical
Power
input in
cooling
modee
H
W
25
20
28
M
14
12
15
L
9.5
10
10
Power
input in
heating
modee
H
25
20
28
M
14
12
15
L
9.5
10
10
Fan Motor Running Current @ H
A
0.22
0.17
0.24
Hydraulic
Cooling
Water
Flow Rate
H
L/h
281
354
518
M
212
294
393
L
161
257
330
Cooling
Pressure
Drope
H
kPa
12.7
10.8
22.4
M
9.8
9
17.4
L
7.6
7.8
14.7
Heating
Water
Flow Rate
H
277
366
530
M
L/h
228
309
413
L
169
259
338
Heating
Pressure
Drope
H
kPa
10
7.9
18.3
M
8.2
6.6
14.3
L
6.1
5.6
11.7
Water Content
L
0.2196
0.3485
0.4917
Construction and
Packing Data
Water
Type
Socket (Threaded Female)
Connections
In
mm[in]
DN15 [1/2]
Out
Condensate Drainage Connection
25.4 [1]
Dimensions
L
mm
567
867
1167
W
560
560
560
H
265
265
265
Panel Dimensions
595*595*12
895*595*12
1195*595*12
Net Weight
Kg
21
31
37
"e": Above specifications are based on declared Eurovent test data for the year of publication of this document. To confirm the most updated specifications,
please visit www.eurovent-certification.com.
Eurovent testing conditions:
a. Cooling mode (2-pipe):
b. Heating mode (2-pipe):
- Return air temperature: 27C DB/ 19C WB
- Return air temperature: 20C
- Inlet/ outlet water temperature: 7C/ 12C
- Inlet/ outlet water temperature: 45C/ 40C

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SK2018 CHV2-V/P-ECM-001
4-Pipe Systems
Product range: CHV2 Coanda Effect Hydronic unit 4-pipe with EC motor and 1 row Auxiliary Heating Coil
CHV2-[Size]-P~ECM
1
2
3
Unit
Configuration
Configuration
4-pipe
Number Of Fan Blowers
Single
Twin
Power Supply
(V/Ph/Hz)
230 / 1 / 50
220 / 1 / 60
Operation Control
~S: Complete function on board PCB with integrated group control functionality
~W: Flexible function on board PCB with drain pump and zone control functionality
Air
Total
Air Flow
H
m3/h
287
365
524
M
220
288
373
L
150
230
290
Cooling
Cooling Capacitye
H
kW
1.64
2.07
3.03
M
1.26
1.73
2.36
L
0.98
1.5
1.99
Sensible Cooling
Capacitye
H
1.17
1.46
2.13
M
0.88
1.21
1.63
L
0.67
1.04
1.36
Latent Cooling Capacity
H
0.47
0.61
0.9
M
0.38
0.52
0.73
L
0.31
0.46
0.63
FCEERe
Rating
94.37
143.92
173.63
Class
C
B
B
Heating
Heating Capacitye
H
kW
1.35
1.88
2.53
M
1.11
1.58
1.97
L
0.83
1.34
1.61
FCCOPe
Rating
144.69
237.83
244.2
Class
C
B
B
Sound
Sound Power Level ( Outlet ) e
49/43/39
45/42/36
53/44/37
Electrical
Power input in cooling
modee
H
W
25
20
28
M
14
12
15
L
10
10
10
Power input in heating
modee
H
W
20
15
23
M
9
7
10
L
5
5
5
Hydraulic
Cooling Water Flow
Rate
H
L/h
281
355
520
M
217
296
404
L
167
257
341
Cooling Pressure Drope
H
kPa
12.7
10.8
22.4
M
8.1
7.9
14.6
L
5.3
6.2
10.9
Heating Water Flow
Rate
H
L/h
115
161
217
M
96
136
169
L
71
115
138
Heating Pressure Drope
H
kPa
5
12.5
19.7
M
3.6
9.3
12.8
L
2.2
7
9.2
Water Content ( at 1 row Auxiliary
Heating Coil)
L
0.073
0.116
0.164
Construction
and
Packing Data
Water
Connections
Type
Socket (Threaded Female)
in
mm[in.]
DN15 [1/2]
out
Condensate Drainage Connection
25.4 [1]
Dimensions
L
mm
567
867
1167
W
560
560
560
H
265
265
265
Panel Dimensions
595*595*12
895*595*12
1195*595*12
Net Weight
kg
21
31
37
"e": Above specifications are based on declared Eurovent test data for the year of publication of this document. To confirm the most updated
specifications, please visit www.eurovent-certification.com.
Eurovent testing conditions:
a. Cooling mode (4-pipe):
b. Heating mode (4-pipe):
- Return air temperature: 27C DB/ 19C WB.
- Return air temperature: 20C
- Inlet/ outlet water temperature: 7C/ 12C.
- Inlet/ outlet water temperature: 65C/55C

Page 8of 67
SK2018 CHV2-V/P-ECM-001
Coil Data
2-Pipe Systems
Model
Fin Height
(mm)
Fin Length (mm.)
Fins /
inch
No. of
rows
No. of
circuits
Tube
Diameter
(inch)
CHV2-01-V
200
458
13
3
2
3/8”
CHV2-02-V
200
758
13
3
3
3/8”
CHV2-03-V
200
1058
13
3
3
3/8”
4-Pipe Systems (1-row Auxiliary Heating Coil)
Model
Fin Height
(mm)
Fin Length (mm.)
Fins /
inch
No. of
rows
No. of
circuits
Tube
Diameter
(inch)
CHV2-01-P
200
458
13
1
1
3/8”
CHV2-02-P
200
758
13
1
1
3/8”
CHV2-03-P
200
1058
13
1
1
3/8”

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SK2018 CHV2-V/P-ECM-001
Dimensional Drawings
595
595
595
595
895
1195