Polar Air SWC-V-EC-I Manual

2019-IOM-SWC-V-EC-I-001

Page 1
Table of Contents
A. Installation ........................................................................................................................................................................ 2
A.1. Safety Precautions..............................................................................................................................................................2
A.2. Before Installation .............................................................................................................................................................. 3
A.3. Mounting Plate Dimensions ...............................................................................................................................................4
A.4. Mounting Plate Installation................................................................................................................................................5
A.5. Condensate Drainage Hole Drilling .................................................................................................................................... 5
A.6. Hydronic Unit Installation................................................................................................................................................... 6
A.7. Drainage Piping Works....................................................................................................................................................... 6
A.8. Pipe Connections with Valve ..............................................................................................................................................7
B. Control Specifications ........................................................................................................................................................8
B.1. Wiring Diagram .................................................................................................................................................................. 9
B.2. Control Logic Specifications ..............................................................................................................................................10
B.3. Sleep Mode .......................................................................................................................................................................14
B.4. Auto Fan Speed................................................................................................................................................................. 14
B.5. Stepping Motor................................................................................................................................................................. 14
B.6. Buzzer ............................................................................................................................................................................... 15
B.7. Auto Restart...................................................................................................................................................................... 15
B.8. On/Off Switch ................................................................................................................................................................... 15
B.9. Electric Heater Safety Switch............................................................................................................................................15
B.10. Low Temperature Protection of Indoor Coil in Winter.................................................................................................... 15
B.11. Open Modbus Protocol ...................................................................................................................................................16
B.12. LED Display and Error Descriptions................................................................................................................................. 19
C. Master Slave Network Setup............................................................................................................................................ 20
D. User Interface.................................................................................................................................................................. 21
D.1. Remote Handset...............................................................................................................................................................21
D.2. Wall Pad ........................................................................................................................................................................... 22
E. Maintenance.................................................................................................................................................................... 25
E.1. Opening and Closing of Lift-Up Grille Cover...................................................................................................................... 25
E.2. Front Cover Assembly Removal ........................................................................................................................................ 25
E.3. Air Vent and Water Purge Valves .....................................................................................................................................25
E.4. Wiring Connections........................................................................................................................................................... 25
F. Troubleshooting Guide..................................................................................................................................................... 26
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A. Installation
A.1. Safety Precautions
•When installing, performing maintenance or servicing Polar Air fan coil units observe the
precautions stated in this manual as well as those stated on the labels attached to the unit.
•Ensure all local and national safety codes, laws, regulations, as well as general electrical and
mechanical safety guidelines are followed for installation, maintenance and service.
•The appliance is for indoor use only.
•Ensure the correct power supply is provided.
•If the power supply cord is damaged, it must be replaced by qualified personnel.
•Installing and servicing fan coil unit should be performed by qualified service personnel only.
•This appliance is not intended for use by persons (including children) with reduced physical, sensory
or mental capabilities, or persons lacking in experience and knowledge of the appliance, unless they
have been given supervision or instruction concerning it.
•User of this appliance is responsible for his/her own safety.
•Warranty shall be voided if installation instructions and safety precaution stated in this manual are
not observed.
•The unit should only be switched off by using the ON-OFF button on the control interface.
CAUTIONS
Before any service or maintenance operations turn off the mains electrical supply.
DO NOT turn OFF the main power supply when the unit is operating. Turn off the unit
BEFORE turning off the main power.
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A.2. Before Installation
Select the location for the high-wall unit with the following considerations:
1. The air inlet and outlet area should be clear without obstructions. The air should flow freely.
2. The high wall unit should be mounted on solid wall.
3. The location should allow easy access to connect water pipes easily achieve drainage.
4. Ensure the clearance around the fan coil unit conforms to the following drawing.
* Required clearance for maintenance and servicing is as shown above.
** All dimensions shown in mm.
5. The unit should be installed higher than eye level.
6. Avoid installing the unit with direct sunlight.
7. The signal receiver on the unit must be kept away from any high frequency emission source.
8. Keep the unit away from fluorescent lamps, which may affect the control system.
9. Avoid electromagnetic control system interference, ensure control wires are installed separately from
110-240 VAC power supply wires.
10. Use shielded sensor cables in where electromagnetic waves present,
11. Install a noise filter if the power supply creates any disruptive noises.
Higher than eye level.
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A.3. Mounting Plate Dimensions
SWC-12/15/18–EC-I
SWC-24–EC-I
(All dimensions shown in mm)
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A.4. Mounting Plate Installation
1. Select the structural position (e.g. a pillar or lintel) on the wall.
2. Then temporarily fasten the mounting plate on the wall with a steel nail.
3. Mount the mounting plate horizontally as shown in the
above figure or by means of gradiometer. Failed to follow
this may cause water to drip indoors and create atypical
noise.
4. Fix the mounting plate by means of expansion screws or
tapping screws.
A.5. Condensate Drainage Hole Drilling
1. Ensure that the hole for condensate drainage is correctly positioned. The height should be lower than the
bottom edge of the indoor unit.
2. Drill a 65mm diameter hole with a descending slope.
3. Seal it off with putty after installation.
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A.6. Hydronic Unit Installation
1. Pass the piping through the hole in the wall and hook the indoor unit on the mounting plate by the upper hooks.
2. Move the body of the unit from side to side to verify if it is securely fixed.
3. While pushing the unit toward the wall, lift it slightly from beneath to hook it up on the mounting plate by the lower
hooks.
4. Make sure the unit firmly rests on the hooks of the mounting plate.
A.7. Drainage Piping Works
1. Install the drain hose so that it slopes downward slightly for free drainage. Avoid installing it as shown in the below
illustrations marked with an “X”.
2. Put water in the drain pan and make sure that the water drains outdoors.
3. If the flexible drain hose provided with the indoor unit is not long enough, please extend it by joining it to an extension
hose (not provided). Be sure to insulate the connecting part of the extension drain hose with a shield pipe as shown.
4. If the attached drain hose passes through an indoor area, insulate it with heat insulation material.
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A.8. Pipe Connections with Valve
Pre-assembly
Complete Assembly
Flexible hose
Valve body with
actuator
Coil connector
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B. Control Specifications
I/O Port Definitions
Abbreviations
Ts = Setting temperature
AUX1 = Cooling water free contact
Tr = Room air temperature
AUX2 = Heating water free contact
Ti1 = Water inlet temperature
V1 = Cooling water on/off valve
Ti2 = Water outlet temperature
V2 = Heating water on/off valve
I/O
Code
2-Pipe
Analogue Input
Return air Sensor
AI1
Return air temperature (Tr)
Chilled water Sensor
AI2
Water inlet temperature sensor (Ti1)
Hot water Sensor
AI3
Water outlet temperature sensor (Ti2)
Input
IR receiver
X-DIS 1
Digital communication port to LED display/IR receiver board.
Wired wall pad
TTL1
Digital communication port to wired wall-pad board.
Digital input
Occupancy contact
ON/OFF
NO/NC contact by setting
Float switch
Float
Voltage-free (NC).
The contact is connected with float switch (NC).
Electrical heater safety
switch
EH
Voltage-free (NC).
The contact is connected with E-heater.
Power input
Phase
L
Power supply to the PCB;
Neutral
N
Power supply to the PCB;
Earth
G
Power supply to the PCB;
Voltage output
Fan 1
CN4
Fan 1 driver
Valve1
V1
On/off valve
Valve2
V2
On/off valve
Water pump
WP
Voltage output (L), Power supply to condensate pump.
Electric heater
Heat
Voltage output (L), maximum 10A.
Output
Stepping motor
CN1, CN2
Power supply to louver stepping motors.
Cooling free contact.
AUX1
Voltage free contact. Maximum load 5A.
Heating r free contact.
AUX
Voltage free contact. Maximum load 5A.
Modulating valve control
DA1
0~10Vdc for cooling water modulating valve control
Modulating valve control
DA2
0~10Vdc for heating water modulating valve control
In Modbus signal
AB
Terminals for local network serial connection
Out Modbus signal
AB
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B.1. Wiring Diagram
Louver Stepping motor
CN1
N
L
KEY
N
LV1 V2
VALVE1
HEAT
VALVE2
AUX1
AUX2
FUSE
Wired Wall
pad plug
A B A B
Yellow/Green
Reset switch SWC06~18
Legend:
L\N----Power supply
HF: 230V high speed output;
MF: 230V medium speed output;
LF: 230V low speed output;
VALVE1:230V on/off valve output;
VALVE2:230V on/off valve output;
PUMP: 230V condensate pump output (reserved)
HEAT----Electrical heater
AI1:Return air temperature sensor(Tr) ;
AI2: Water inlet temperature sensor (Ti1) ;
AI3: Water outlet temperature sensor (Ti2) ;
AUX1:Voltage free contact; ON:unit in cooling mode.
AUX2:Voltage free contact; ON:unit in heating mode.
ON/OFF:Occupancy contact
Float: Float switch contact (reserved)
CN1 2---Stepping motor
CN3---Serial BUS contacts.
CN4---Ec motor
DIS---LED receiver display
TTL---wired wall pad
TR--- 220Vac/24Vac transformer
DA1--0~10Vdc signal for cooling modulaing valve
DA2--0~10Vdc singal for heating modulating valve
CPU
AI3 AI2 AI1
CN2
prog
EH
DIS
TTL1
Reset switch for SWC-20, 24, 30
CN3
ON/OFF
TERMINAL
{
Water outlet temperature sensor
Water inlet temperature sensor
(Ti1)
Renturn sensor (Tr)
(Ti2)
iSWC-S Unit wiring scheme
EH
B A
RS485 plug
A1 A1 A2 A2
Auxiliary cooling contact
Auxiliary heating contact
Electrical heater
FUSE
DISPLAY
SCS-SWC-ECM-2019
PROs
PRO contact
110C
Plug
moter
PUMP
Reserved
GND
Float
0 10Vdc0 10Vdc
DA1
DA2
C R
TR
40VA
24Vac for modulating valve
2019-IOM-SWC-V-EC-I-001