Mestek HWL2-1116 Installation, Operation & Maintenance Manual Download Page 1

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HWL2-1116

IN UNITED STATES: 260 NORTH ELM ST. WESTFIELD, MA 01085 800-465-8558 / FAX (413) 564-5815

IN CANADA: 7555 TRANMERE DRIVE, MISSISSAUGA, ONTARIO, L5S 1L4 (905) 670-5888 / FAX (905) 670-5782

MODEL HW

INSTALLATION,

OPERATION &

MAINTENANCE

MANUAL

Low Temperature

High Wall Heating/Cooling Fan Coil

Units up to 2 Ton Capacity

Summary of Contents for HWL2-1116

Page 1: ...MA 01085 800 465 8558 FAX 413 564 5815 IN CANADA 7555 TRANMERE DRIVE MISSISSAUGA ONTARIO L5S 1L4 905 670 5888 FAX 905 670 5782 MODEL HW INSTALLATION OPERATION MAINTENANCE MANUAL Low Temperature High Wall Heating Cooling Fan Coil Units up to 2 Ton Capacity ...

Page 2: ...ntee 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 WEEE MARK Quality Controlled ...

Page 3: ... OF INPUT OUTPUT 19 D 2 WIRING DIAGRAM FULL CONTROL PCB S CONTROL TYPE 20 D 3 CONFIGURATION SETTINGS 21 D 4 CONTROL LOGICS FOR 2 PIPE SYSTEM 23 D 4 1 With Thermoelectric Valve Configuration 23 D 4 2 Without Thermoelectric Valve Configuration 26 D 5 CONTROL LOGICS FOR 4 PIPE SYSTEM 28 D 6 SLEEP MODE 30 D 7 AUTO FAN SPEED 30 D 8 LOUVER 31 D 9 BUZZER 31 D 10 AUTO RESTART 31 D 11 OPERATION OF CONTROL ...

Page 4: ... USERS INTERFACE 49 G 1 REMOTE CONTROL HANDSET 49 G 2 WIRED WALL PAD 50 G 2 1 Wall Pad Display 50 G 2 2 Wall Pad Operation Guidelines 51 G 2 3 EC unit RPM setting 54 H SENSOR RESISTANCE R T CONVERSION TABLE 55 I TROUBLESHOOTING GUIDE 57 ...

Page 5: ... Tabs located on the front of the unit can be unsnapped allowing the filter to be easily slid downward and removed No tools are required nor any dismantling of the equipment Air Grille Distribution all units are equipped with both deflector blades and independent directional vanes enabling supply air to be automatically distributed and air flow and direction to be customized Microprocessor Control...

Page 6: ...8 18 26 30 30 40 50 M 10 13 13 20 20 20 30 40 L 6 10 10 13 13 15 19 25 Fan Motor Running Current H 115V A 0 16 0 284 0 284 0 364 0 544 0 696 1 04 1 5 Fan Motor Running Current H 220V A 0 08 0 142 0 142 0 182 0 272 0 348 0 52 0 75 Soun d Sound PressureLevel dB A 31 26 24 39 31 26 40 33 28 45 34 31 49 44 37 43 39 36 47 43 37 50 47 40 Sound Power Level 40 35 33 48 40 35 49 42 37 54 43 40 58 53 46 52 ...

Page 7: ...gth inch Fins per Inch No of Rows No of Copper No of Circuits Tube Diameter inch HW 04 9 1 26 8 19 5 2 8 2 0 3 HW 06 14 1 26 8 2 20 4 0 3 HW 12 14 1 26 8 2 26 5 0 3 HW 15 14 1 26 8 2 26 5 0 3 HW 18 14 1 26 8 2 34 5 0 3 HW 20 14 9 33 3 2 36 6 0 3 HW 24 14 9 33 3 2 36 6 0 3 HW 30 14 9 33 3 2 36 6 0 3 ...

Page 8: ... 14 9 14 7 16000Hz 7 4 8 6 7 8 1 2 7 8 7 9 8 0 7 8 7 9 7 9 7 9 8 0 Speed H M L H M L H M L H M L Model HW 04 HW 06 HW 12 HW 15 A weighted Sound Power dB A 53 7 48 6 41 3 46 8 43 4 40 1 49 8 46 8 40 1 55 7 52 1 43 4 Sound Power in 1 3 Octave bands unit dB 31 5Hz 3 6 3 9 11 5 16 8 8 3 12 3 12 8 16 8 12 3 17 1 9 4 8 3 63Hz 22 3 14 5 11 1 17 2 11 2 11 8 12 3 17 2 11 8 22 4 18 0 11 2 125Hz 27 2 20 4 15...

Page 9: ...1 9 0 6 1 5 8 0 1 4 1 3 1 2 1 4 1 3 1 3 2 2 1 4 Speed H M L H M L H M L H M L Model HW 04 HW 06 HW 12 HW 15 A weighted Sound Pressure dB A 44 4 39 4 32 37 5 34 2 30 9 40 5 37 5 30 9 46 5 42 9 34 2 Sound Pressure in 1 3 Octave bands unit dB 31 5Hz 5 7 5 3 2 2 7 6 0 9 3 1 3 6 7 6 3 1 7 9 0 1 0 9 63Hz 13 1 5 3 1 9 7 9 2 0 2 5 3 1 7 9 2 5 13 2 8 8 2 0 125Hz 17 9 11 2 5 8 12 0 9 3 5 7 13 7 12 0 5 7 16 ...

Page 10: ...18 AECM Model Unit Dimensions A B C D E F G H HW 04 06 12 15 18 1 57 4 13 34 45 2 17 4 13 R0 78 2 36 2 91 All dimensionsshown in inch Model Unit Dimensions a b c d e f g h HW 04 06 12 15 18 7 87 2 17 1 18 1 18 8 66 9 02 0 39 11 81 Model Unit Dimensions 1 2 3 4 HW 04 06 12 15 18 26 18 6 69 27 95 4 92 ...

Page 11: ... AECM Model Unit Dimensions A B C D E F G HW 20 24 30 3 54 41 34 2 01 3 54 0 59 2 87 2 91 Model Unit Dimensions 1 2 3 4 HW 20 24 30 33 66 6 10 32 28 6 89 All dimensionsshown in inch Model Unit Dimensions a b c d e f g h HW 20 24 30 8 46 2 05 1 18 1 26 9 25 12 20 2 28 0 51 ...

Page 12: ...1 2 Way 1 2 Valve Body B 5 2 3 Way 1 2 Valve Body Differential Pressure Chart Valve Model Valve Dimensions inch DN A B C D SGS14HFCA 23020201 D15 G1 2 2 05 1 85 0 77 2 48 Valve Model Valve Dimensions inch DN A B C D SGS14HFCA 23020202 D15 G1 2 2 05 2 76 1 57 3 39 ...

Page 13: ...location should allow easy access to install the connecting water pipes and be where drainage can be easily achieved 4 Ensure the clearance around the fan coil unit conforms to the following drawing 5 From the floor the height of the unit should be above eye level 6 Avoid installing the unit in direct sunlight Required clearance for maintenance and servicing is as shown above All dimensions shown ...

Page 14: ...Page 13 of 57 SK2016 HW V AECM 001 C 1 2 Mounting Plate Dimensions HW 04 06 12 15 18 AECM HW 20 24 30 AECM All dimensions shown in inch ...

Page 15: ...above figure or by means of gradiometer Failure 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 C 1 4 Drilling the Condensate Drainage Hole 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 h...

Page 16: ... the hooks of the mounting plate C 1 6 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 a...

Page 17: ...e positions indicated by the arrows C 2 2 Removing Front Cover Assembly 1 Set the horizontal louver to the horizontal position 2 Remove the screw caps below the louver and then remove the mounting screws 3 Open the lift up grille cover by grasping the panel at both sides as shown above 4 Remove the remaining screws located in the center of the front cover 5 Grasp the lower part of the front cover ...

Page 18: ...akage If no leak is found open the purging valve with an open end wrench while supporting the unit with your other hand Then purge the air trapped inside the coil When performing this activity take care not to touch the electrical parts 4 Close the purging valve when no bubbles appear 5 Open the water outlet valve C 2 4 Wiring Connections Unit components are wired to the terminal block of the indo...

Page 19: ...Page 18 of 57 SK2016 HW V AECM 001 C 3 Pipe Connections with Valve Pre assembly Complete Assembly Flexible hose Valve body with actuator gasket Coil connector ...

Page 20: ...B SW1 1 Economy contacts for remote activation of economy mode when DIPB SW1 0 Electrical heater safety switch EH Voltage free NC The contact is closed before the EH is turned on Power input Phase L1 Power supply 220V 1Ph 60Hz 115V 1Ph 60Hz Neutral N1 Earth PE1 Voltage output Fan CN4 Fan driver Valve 1 MTV1 2 pipe coil circuit valve output chilled hot water valve Voltage output L 2 pipe coil circu...

Page 21: ...Page 20 of 57 SK2016 HW V AECM 001 D 2 Wiring Diagram Full Control PCB S Control Type ...

Page 22: ...2 pipe 4 pipe configuration selection SW3 Thermoelectric valve configuration selection 2 pipe system only SW4 Pre heat protection temperature selection SW5 SW6 brushless DC fan motor configuration Default DIP Switch Settings Figure 1 DIPA S1 DIPB S2 Figure 2 3 Thermoelectric Valve Configuration On board DIP switch SW3 of DIPB is used for this configuration SW3 Thermoelectric valve MTV 1 With valve...

Page 23: ...el SW7 SW8 Model setting 0 0 Cool Heat 0 1 Cool Heat booster heater 1 0 Cooling only 1 1 Cool primary heater 7 Air Conditioner ON OFF There are 3 ways to turn the system on or off a By the ON OFF button on the handset or wired wall pad b By the programmable timer on the handset or wired wall pad c By the manual control button on the air conditioner 8 Power On Setting a Handset only user interface ...

Page 24: ...f b Indoor fan speed can be adjusted to low medium and high HEAT MODE Without Electrical Heater a MTV2 AUX2 and heater are always off b If Tr Ts 1 8ºF or 7 2ºF if economy contact is activated then heat operation is activated and MTV1 and AUX1 are turned on Indoor fan runs at the set speed c If Tr Ts then heat operation is terminated and MTV1 and AUX1 are turned off Indoor fan runs at 200RPM d The ...

Page 25: ...0 4ºF or 86ºF depending on DIP setting then MTV1 and AUX1 are turned on indoor fan runs at set speed c If the indoor coil temperature sensor is damaged then the pre heat time is set for 2 minutes Indoor fan runs at set speed With Electrical Heater a If the indoor fan speed 300rpm then the electrical heater will turn on POST HEAT Without Electrical Heater a If Ti1 100 4ºF then MTV1 and AUX1 are tur...

Page 26: ...according to the following i If the coil temperature sensor Ti1 96 8 F then MTV1 AUX1 and fan turn on or off according to HEAT mode ii If Ti1 96 8 F then MTV1 AUX2 and fan turn on or off according to COOL mode b Unit remains in AUTO COOL or AUTO HEAT mode throughout the operating cycle until the user changes the mode manually or restarts the unit c Should the Ti1 sensor fail or be damaged auto mod...

Page 27: ...ed while heater AUX1 AUX2 MTV1 and MTV2 are turned off b Indoor fan speed can be adjusted to low medium and high HEAT MODE Without electrical heater a MTV1 MTV2 AUX2 and heater are always off b If Tr Ts 1 8ºF or 7 2ºF if economy contact is activated then heat operation is activated and AUX1 is turned on Indoor fan runs at the set speed c If Tr Ts then heat operation is terminated and AUX1 is turne...

Page 28: ...ium speed If indoor fan runs at medium or high speed then it will run at set speed b If Ti1 41ºF for 2 minutes then AUX2 is turned on Indoor fan runs at set speed OVER HEAT PROTECTION OF INDOOR COIL a If Ti1 167ºF then AUX1 is turned off Indoor fan remains on and runs at high speed b If Ti1 158ºF then AUX1 is turned on Indoor fan remains and runs at set speed c If the indoor coil temperature senso...

Page 29: ...X1 are turned off Indoor fan runs at 200RPM d The range of Ts is 68 8 86ºF e Indoor fan speed can be adjusted to low medium high and auto f When turned on MTV2 requires 30 seconds before it is fully open g When turned off MTV2 requires120 seconds before it is fully closed With Electrical Heater as Booster a MTV1 and AUX2 are always off b If Tr Ts 1 8ºF or 7 2ºF if economy contact is activated then...

Page 30: ... and AUX1 are turned off Indoor fan remains on and runs at high speed b If Ti2 158ºF then MTV2 and AUX1 are turned on Indoor fan remains on and runs at set speed c If the indoor coil temperature sensor is damaged then the protection mode will be overridden and the unit will work according to the pre heat and post heat set times DEHUMIDIFICATION MODE a MTV2 AUX1 and heater are always off b If Tr 77...

Page 31: ...e mode of operation will cancel the sleep mode The cool mode sleep profile is The heat mode sleep profile is D 7 Auto Fan Speed a In COOL mode the fan speed cannot change until it has run for more than 30 seconds Fan speed is regulated according to the profile below b In HEAT mode the fan speed cannot change until it has run for more than 30 seconds High Tr Medium Low Low Ts 3C Ts 2C Ts 1C Ts High...

Page 32: ...et Temperature Swing and Fan Speed when using a wall pad parameters are Mode Set Temperature Swing and Fan Speed as well as the 7 day ON OFF Timer program D 11 Operation Of Control Panel On High Wall Unit D 11 1 On Off Switch This is a tact switch to select COOL HEAT OFF operation mode In COOL mode the set temperature of the system is 75 2ºF with auto fan speed and swing There are no timer and SLE...

Page 33: ...Page 32 of 57 SK2016 HW V AECM 001 D 12 LED lights For all units Power Operation LED light both green Unit on Operation LED On Power LED Off Unit in standby Power LED On Operation LED Off ...

Page 34: ...ED blinks 3 times stops for 3s Room sensor unplugged or damaged 1 Check if Tr plug is connected or not 2 Check if sensor s resistance is correct or not Indoor coil sensor 1 failure Green LED blinks 4 times stops for 3s Ti1 sensor unplugged or damaged 1 Check if Ti1 plug is connected or not 2 Check if sensor s resistance is correct or not Indoor coil low temperature protection Green LED blinks 5 ti...

Page 35: ...ks 15 times stops for 3s Check unit 15 communication plug and fix it Unit 16 failure RED LED blinks 16 times stops for 3s Check unit 16 communication plug and fix it Unit 17 failure RED LED blinks 17 times stops for 3s Check unit 17 communication plug and fix it Unit 18 failure RED LED blinks 18 times stops for 3s Check unit 18 communication plug and fix it Unit 19 failure RED LED blinks 19 times ...

Page 36: ...operation c The master unit settings are unit ON OFF Mode Fan Speed Timer Clock Set Temperature Swing Function and Sleep Function for wall pad operation SLAVE UNIT FUNCTION a The slave unit receives data regarding its settings from the master unit b The slave unit is allowed to change to a locally desired setting by local controller as long as there are no subsequent changes to the settings of the...

Page 37: ... 2 Communication plug A B A B is printed on the main PCB When you connect the wires please ensure connection of A to A and B to B 3 Connection wire i If the total length of wire is more than 1000m please use shielded wire in order to protect the signal transmission ii Complete wire connection First unit Middle unit Last unit ...

Page 38: ...e contact by using a multimeter 3 Check 1 and 2 3 and 4 5 and 6 to be sure the connections are correct 4 If the resistance between two wire contacts is too high please check and reconnect the wire contacts 4 Reconnect the communication plug to the control box First unit Middle unit Last unit 1st contact 2nd contact 3rd contact 4th contact 5th contact 6th contact ...

Page 39: ...Set Master Control Unit a Connect all the units PCBs according to the wire color and type of connector b Select the master unit by setting DIPA S1 SW6 to ON 1 in the PCB c Ensure the DIPA S1 SW6 is set to OFF 0 in the PCB on each slave unit d Provide each slave unit with an addressable code by configuring SW1 SW5 of DIPA S1 according to the DIP switch setting table e Switch on the units by connect...

Page 40: ...SW5 DIPA S1 SW4 DIPA S1 SW3 DIPA S1 SW2 DIPA S1 SW1 Unit No Remark 1 0 0 0 0 0 01 Master 0 0 0 0 0 1 02 Slave 0 0 0 0 1 0 03 Slave 0 0 0 0 1 1 04 Slave 0 0 0 1 0 0 05 Slave 0 0 0 1 0 1 06 Slave 0 0 0 1 1 0 07 Slave 0 0 0 1 1 1 08 Slave 0 0 1 0 0 0 09 Slave 0 0 1 0 0 1 10 Slave 0 0 1 0 1 0 11 Slave 0 0 1 0 1 1 12 Slave 0 0 1 1 0 0 13 Slave 0 0 1 1 0 1 14 Slave 0 0 1 1 1 0 15 Slave 0 0 1 1 1 1 16 Sl...

Page 41: ...Page 40 of 57 SK2016 HW V AECM 001 E 2 Unit Network Wiring Scheme Wiring diagram for a master slave network connection ...

Page 42: ...d Coils 02 02H Read Discrete Inputs 03 03H Read Holding Registers 04 04H Read Input Registers 05 05H Write Single Coil 06 06H Write Single Register 15 0FH Write Multiple Coils 16 10H Write Multiple Registers 255 FFH Extended Commands which are used to test unit Valid Error code table Error code Description Definition 01 01H Invalid commands Received commands beyond valid commands 02 02H Invalid da...

Page 43: ...0 Reserved 100011 Reserved 100012 Reserved 100013 Reserved 100014 Reserved 100015 R read only W write only R W read and write Discrete table Description Address Type Remark MTV1 200000 R MTV2 200001 R AUX1 200002 R AUX2 200003 R Condensate pump 200004 R Electrical heater 200005 R Wired wall pad 200006 R PRO 200007 R Float switch 200008 R Reserved 200009 R EH safety switch 200010 R Unit ON OFF stat...

Page 44: ...ibration wired wall pad and set timer function Minute 300008 W Calibration wired wall pad and set timer function Second 300009 W Calibration wired wall pad and set timer function Hours in Timer on 300010 R W Timer ON Minute in Timer on 300011 R W Timer ON Hours in Timer off 300012 R W Timer OFF Minute in Timer off 300013 R W Timer OFF Icon of Timer ON or OFF 300014 R W BIT0 Icon of Timer ON BIT1 I...

Page 45: ...served Bit7 Electrical heater failure Bit8 Motor1 Error Bit9 Motor2 Error Bit10 System parameters error Bit11 Reserved Bit12 Reserved Bit13 Reserved Bit14 Reserved Bit15 Reserved Fan speed status 400006 R Low 04 H Medium 02 H High 01 H Mode status 400007 R Cooling mode 01 H Dehumidify mode 02 H Fan mode 04 H Heating 08 H Setting temperature status 400008 R Testing only Room temperature in wall pad...

Page 46: ...il sensor Power input R1 Lo 24 Voltage input NO If any speed is powered the unit is turned on If no speed receives power the unit is turned off R 2 Med R 3 Hi Power input Phase L Power supply 220V 1Ph 60Hz 115V 1Ph 60Hz Neutral N Earth GND Digital input Wired wall pad TTL Change EC motor rpm Signal input AUTO SIGNAL Auto 24V 60HZ auto signal on unit is turned on 0 to 5VDC 0 10VDC Signal 0 to 5VDC ...

Page 47: ...Page 46 of 57 SK2016 HW V AECM 001 F 2 Wiring diagram Flexible Control PCB W Control Type ...

Page 48: ... Code State Description SW1 0 PCB configured for 0 5VDC modulating signal input 1 PCB configured for 0 10VDC modulating signal input MODEL SW2 SW3 SW4 Hi Med Low HW 04 0 0 0 700 600 500 HW 06 0 0 1 900 700 600 HW 12 0 1 0 950 700 600 HW 15 0 1 1 1100 800 700 HW 18 1 0 0 1300 1100 900 HW 20 1 0 1 1100 900 800 HW 24 1 1 0 1200 1100 900 HW 30 1 1 1 1350 1200 900 Default RPM 1 1 1 Set by customer requ...

Page 49: ... motor runs at 200 RPM EC motor RPM will be changed by the signal voltage F 5 LED Display For all units Power Operation LED light both green Unit on Operation LED On Power LED Off Unit in standby Power LED On Operation LED Off F 6 Error Description For all units Operation LED light Green Item Blink Reason Remedy Indoor coil sensor 1 failure Green LED blinks 4 times stops for 3s Ti1 sensor connecti...

Page 50: ...et Attention When unit with handset is the master unit its settings are automatically sent to the slave units Auto Cool Heat operation will be applicable in 4 pipe system only Swing function is not applicable European version only uses degree C setting Swing It is not available ...

Page 51: ...n board model automatically whether it is 2 pipe or 4 pipe system b Auto Cool Heat operation is applicable in 4 pipe system only c When the wall pad is installed the wall pad temperature sensor automatically overrides the default return air sensor attached near unit return air European version only uses degree C setting ...

Page 52: ...ss TIMER button again and OFF symbol blinking indicates OFF timer programming mode The setting method is the same as the ON timer setting above 3 Press TIMER button again to exit the ON OFF timer setting function 4 Should there be any ON or OFF timer settings programmed will light up Should there be any unexecuted ON or OFF timer settings for the current day its corresponding ON or OFF icon will l...

Page 53: ...r wall pad will respond with a beeping sound f Key lock In order to prevent unauthorized access to the system setting a key lock function is provided Hold down and for 3 seconds to activate key lock symbol will light up Repeat the same to exit key lock Only button is applicable in key lock mode g Swing Press SWING button to activate or deactivate swing function h Sleep Press SLEEP button to activa...

Page 54: ... parameters browsing mode Unit display area shows the address of the slave unit being viewed Slave unit selection method is the same as in networking control above Press or to browse various parameters as follow Wall pad display temperature area Wall pad display time area C0 Return air temperature displayed C1 Indoor coil temperature displayed C2 DIP switch setting displayed C3 Indoor coil 2 tempe...

Page 55: ...ired wall pad LED will display the following 5 To complete the RPM setting turn the DIP switch 1 to OFF position The wired wall pad display will resume its normal appearance This is the motor RPM setting Press TEMP button to increase the RPM setting by 10RPM step This is the speed level setting d0 means low speed d1 means medium speed d2 means high speed Press PARAMETER button to select ...

Page 56: ...85 60 8 14 69 15 05 15 41 1 4 79 8 83 17 86 64 62 6 14 03 14 37 14 7 3 2 75 39 78 53 81 76 64 4 13 41 13 72 14 03 5 71 26 74 18 77 19 66 2 12 81 13 1 13 4 6 8 67 37 70 1 72 9 68 12 24 12 52 12 79 8 6 63 73 66 26 68 88 69 8 11 7 11 96 12 22 10 4 60 3 62 67 65 1 71 6 11 19 11 43 11 67 12 2 57 08 59 28 61 55 73 4 10 71 10 93 11 15 14 54 05 56 1 58 22 75 2 10 24 10 45 10 66 15 8 51 19 53 12 55 08 77 9...

Page 57: ...97 1 012 125 6 3 225 3 326 3 43 192 2 0 8998 0 9401 0 9818 127 4 3 105 3 204 3 305 194 0 8721 0 9115 0 9522 129 2 2 99 3 086 3 185 195 8 0 8455 0 8839 0 9237 131 2 88 2 974 3 07 197 6 0 8198 0 8573 0 8961 132 8 2 774 2 866 2 959 199 4 0 795 0 8316 0 8696 134 6 2 673 2 762 2 854 201 2 0 7711 0 8069 0 8439 136 4 2 576 2 663 2 752 203 0 748 0 783 0 8192 138 2 2 483 2 568 2 655 204 8 0 7258 0 7599 0 7...

Page 58: ...Page 57 of 57 SK2016 HW V AECM 001 I Troubleshooting Guide ...

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