MORTEX Suntherm HEC1 User'S Information Manual Download Page 1

MORTEX

 

PRODUCTS

 

INC

 

FORT

 

WORTH,

 

TX

 

76106

 

Page

 

1

 

 

 

USERS INFORMATION MANUAL 

 

Horizontal Fan Coil Models: 

HEU1 - DX Cooling w/ Electric Heat, Uncased   

         HEU2 - DX Cooling w/ Hot Water Heat, Uncased 

HEC1 – DX Cooling w/ Electric Heat, Cased 

 

         HEC2 – DX Cooling w/ Hot Water Heat, Cased 

HEU3 – Chilled Water Cooling w/Electric Heat, Uncased-2P HEU4 – Chilled Water Cool w/Hot Water Heat, Uncased-4P 
HEC3 – Chilled Water Cooling w/ Electric Heat, Cased-4P     HEC4 – Chilled Water Cool w/Hot Water Heat, Cased-4P 

 

LIST OF SECTIONS – USERS INFORMATION MANUAL 

– 

General 

     1 

– 

Start 

Up 

Shutdown 

Instructions 

   5 

– 

Safety      2 

– 

Owner 

Maintenance 

    5 

3 – Owners Information & Seasonal Information   

 

 

LIST OF SECTIONS – SERVICE AND MAINTENANCE MANUAL 

– 

Safety      7 

– 

Trouble 

Shooting 

    14 

2 – Fan Coil Unit Maintenance 

 

 

 8 

– 

Accessories 

Parts 

    16 

3 – Fan Coil Unit Controls 

 

 

 

 

7 – Blower Performance 

 

 

 

 

17 

– 

Sequence 

of 

Operation 

    12 

– 

Replacement 

Parts 

    19 

 

LIST OF FIGURES 

1 – Fan Coil Unit Visual Examination Check Points 

 

14 – Adjustable Time Delay Relay (TDR) Terminals 

 

14 

2 – Home Owner / Users Cleaning Points 

 

 

15 – Constant Torque Blower Motor Terminals   

 

14 

3 – Ceiling Access Panel Air Filter Location 

 

 

16 – Electric Heater Contactor Terminal Designations 

 

15 

4 – Replacement Standard 1” Air Filter Drawing   

 

17 – Blower Assembly Removal 

 

 

 

15 

5 – Optional Return Air Filter Grille 

 

 

 

18 – Blower Motor Retainer Clip Removal 

 

 

16 

6 – No Electric Heat Control Box 

 

 

 

19 – HE1 & HE3 18,19,24 Electric Heat Replacement Part Schematic 19

 

7 – Hydronic Heat Control Box 

 

 

 

20 – HE1 & HE3 25,30.31 Electric Heat Replacement Part Schematic 20 

8 – Electric Heat Control Box  

 

 

 

21 – HE1 & HE3 34, 35 Electric Heat Replacement Part Schematic  21 

9 – Blower Assembly & Mounting Screw Location 

 

22 – HE1 & HE3 35, 36 Electric Heat Replacement Part Schematic  22 

10 – ICM AY1015 Hydronic Controls for C.T. Motors 

 

10 

23 – HE2 & HE4 18,19,24 Hydronic Ht Replacement Part Schematic 23 

11 – Component Locations – Hydronic Heat 

 

 

12 

24 – HE2 & HE4 25,30,31 Hydronic Ht Replacement Parts Schematic24 

12 – Component Locations – Electric Heat 

 

 

12 

25 – HE2 & HE4 34, 35 Hydronic Heat Replacement Parts Schematic25 

13 – Blower Motor Speed Isolation Relay (Electric & No Heat) 

13 

26 – HE2 & HE4 35, 36 Hydronic Heat Replacement Parts Schematic26 

 

LIST OF TABLES 

1– Constant Torque Motor Terminals   

 

 

14 

9 – HE1 / HE3 – 18, 19, 24 - Electric Heat Repair Parts List  

19 

2– 208/240 Volt Blower Motor Tested FLA 

 

 

15 

10 – HE1 / HE3 – 25, 30, 31 - Electric Heat Replacement Parts List  20 

3– 115 Volt Blower Motor Tested FLA  

 

 

15 

10 – HE1 / HE3 – 34, 35 - Electric Heat Replacement Parts List 

21 

4– Accessory Parts List 

 

 

 

 

16 

10 – HE1 / HE3 – 36, 37 - Electric Heat Replacement Parts List 

22 

5 – HE1/HE3 Blower Performance Chart – CFM Data w/ CT Motor  17 

11 – HE2 / HE4 – 18, 19, 24 - Hydronic Heat Replacement Parts List 23 

6 – HE1/HE3 Blower Performance Chart – AMP Data w/ CT Motor  17 

12 – HE2 / HE4 – 25, 30, 31 - Hydronic Heat Replacement Parts List 24 

7 – HE2/HE4 Blower Performance Chart – CFM Data w/ CT 

18 

13 – HE2 / HE4 – 34, 35 - Hydronic Heat Replacement Parts List 

25 

8 – HE2/HE4 Blower Performance Chart – AMP Data w/ CT 

18 

14 – HE2 / HE4 – 35, 36 - Hydronic Heat Replacement Parts List 

26 

 

CONTACT INFORMATION 

Contact us by mail:  Manufactured and Distributed 

by 

 Mortex 

Products 

Inc. 

     

 

      501 

Terminal 

Rd 

  www.mortx.com 

       Fort 

Worth, 

TX 

76106 

 

 

SECTION I: GENERAL 

The following list includes important facts and information regarding 
the air handler and its inclusions.  

1.

 

Fan Coil is rated at 240 volts AC at 60 Hertz for electric heat 
models or 120 volts AC at 60 Hertz for hydronic models. 

2.

 

Fan Coil is not designed to be operated on a 50 HZ supply. 

3.

 

All Fan Coil Units are equipped with a blower for A/C or Heat 
Pump operation. 

4.

 

Fan Coil models are designed for horizontal applications only. 

5.

 

This Fan Coil Unit must not be operated without the control 
box cover installed. 

NOTE: This fan coil unit and its components are listed as a 
combination AC or Heat Pump system by ETL for sale in the United 
States and Canada. 

 

USERS MUST READ ALL INSTRUCTIONS IN THIS MANUAL AND 
THIS MANUAL MUST BE SAVED FOR FUTURE REFERENCE 

 

 

 

 
 
 
 
 
 
 
 
 
 

 
 
 
 
 

FIRE OR ELECTRICAL HAZARD 

Failure to follow the safety warnings exactly could result in 
serious injury, death, or property damage. 
A fire or electrical hazard may result causing property 
damage, personal injury or loss of life. 

 

Do not store or use gasoline or other flammable vapors and 
liquids in the vicinity of this or any other appliance 

Summary of Contents for Suntherm HEC1

Page 1: ...ic25 13 Blower Motor Speed Isolation Relay Electric No Heat 13 26 HE2 HE4 35 36 Hydronic Heat Replacement Parts Schematic26 LIST OF TABLES 1 Constant Torque Motor Terminals 14 9 HE1 HE3 18 19 24 Elect...

Page 2: ...ndler or the space around the appliance The flow of air is required for safe and proper operation Never block or obstruct air openings used for ventilation and cooling of the air handler electrical co...

Page 3: ...d the circulating blower draws air from the living space s passes it across the cooling coil in the air handler and circulates the cooled air through the duct work to the living space s When the therm...

Page 4: ...warranty at a later date While you are away The fan coil unit is equipped with safety shutoff devices which are designed to prevent the appliance from overheating in case of a malfunction For this rea...

Page 5: ...tat to the lowest setting 2 Turn off all electrical power to the appliance at the main service disconnect box 3 Open the ceiling access panel 4 Turn off the service disconnect on the appliance if used...

Page 6: ...clean the filter and reuse it 6 Check the size of the air filter that was removed to make sure it is replaced with a filter that is the same size 7 Clean any access dirt or debris around the front ar...

Page 7: ...us injury if clothing or body parts get caught in the moving part The manufacturer or distributer will not be responsible for any repairs due to removal of parts or improper parts changes improper mai...

Page 8: ...to the control box and remove the blower motor wires from the control box 7 Remove the two screws on the blower mount plate located on the right side the left side the screw on the top center and the...

Page 9: ...pliance Removing Electric Heaters 1 Follow the instructions exactly as shown in Startup and Shutdown Section in this manual to properly shutdown this appliance 2 Open the ceiling access panel by remov...

Page 10: ...ng on the next call for heat 3 Blower Motor Operation The hydronic control board has three 3 speed terminals for the blower motor The hydronic control board will send 120 VAC to the HI terminal for co...

Page 11: ...ergize the valve pump and boiler The indoor fan motor will de energize after the selected OFF delay FR The FR terminal energizes the control board freeze protection The freeze protection switch is sec...

Page 12: ...pleted between the R Y and G Terminals The indoor fan motor is energized from the G terminal on the thermostat causing the time delay relay to start the on time delay The time delay relay contacts wil...

Page 13: ...at closes the circuit between the R Y and G terminals 24 VAC is sent from the Y terminal through the yellow thermostat wire to the 24 VAC coil terminal on the condenser contactor energizing the contac...

Page 14: ...k common wire to be sure it is connected to the common side of the transformer If common wire is properly connected and your meter is showing 24 VAC on terminals A1 and A2 on the contactor Check to se...

Page 15: ...If there is almost no current draw check to see if the heater is defective The heater amps are as follows 3 kW Heater 12 5 amps 5 kW Heater 20 8 amps 6 kW Heater 25 0 amps 8 kW Heater 33 3 amps 10 kW...

Page 16: ...wo screws on the blower mount plate located on the right side the left side the screw on the top center and the screw in the control box Refer to Figure 27 for screw locations 20 Place the motor wires...

Page 17: ...p Table 5 HE1 Blower Performance Chart CFM Data with a Constant Torque Motor Without Air Filters HP Volts 1 0 28 0 30 0 33 0 36 0 38 2 0 36 0 39 0 43 0 45 0 48 3 0 47 0 50 0 53 0 56 0 59 4 0 62 0 64 0...

Page 18: ...20 R Table 7 HE2 Blower Performance Chart CFM Data with CT Motors Without Air Filters 1 0 52 0 56 0 61 0 65 0 70 2 0 75 0 79 0 84 0 88 0 92 3 1 02 1 06 1 08 1 14 1 21 4 1 30 1 36 1 42 1 46 1 50 5 1 53...

Page 19: ...s 9 1 R68CA0001 140 F Limit Switch Opens at 140 F Closes at 110 F 10 1 R68AB0019 Double Pole Electric Heat Contactor 50 Amp Resistive 8 1 R86CJ0174 8 KW Element Kit 2 EA 4 0 kW Heater Elements with Li...

Page 20: ...imit Switch Opens at 140 F Closes at 110 F 10 1 R68AB0019 Double Pole Electric Heat Contactor 50 Amp Resistive 8 1 R86CJ0174 8 KW Element Kit 2 EA 4 0 kW Heater Elements with Limits 9 1 R68CA0001 140...

Page 21: ...Limit Switch Opens at 140 F Closes at 110 F 10 1 R68AB0019 Double Pole Electric Heat Contactor 50 Amp Resistive 8 1 R86CJ0174 8 KW Element Kit 2 EA 4 0 kW Heater Elements with Limits 9 1 R68CA0001 140...

Page 22: ...Limit Switch Opens at 140 F Closes at 110 F 10 1 R68AB0019 Double Pole Electric Heat Contactor 50 Amp Resistive 8 1 R86CJ0174 8 KW Element Kit 2 EA 4 0 kW Heater Elements with Limits 9 1 R68CA0001 140...

Page 23: ...e Air Bleed Core 9 1 R74BB0001 1 2 Boiler Drain 10 1 R86BC0001 2 Row Hot Water Coil 6 x 27 11 1 R78AA0007 4 GPM Taco Circulating Pump 120V 1 2 Inlet and Outlet 12 1 R87BAE001 Galvanized G90 Drain Pan...

Page 24: ...Boiler Drain 10 1 R86BC0002 2 Row Hot Water Coil 6 x 35 11 1 R78AA0007 Standard 4 GPM Circulating Pump 120V 1 2 Inlet and Outlet 11 1 R78AA0008 Optional 7 GPM Pump 120V 3 4 Inlet and Outlet 12 1 R87B...

Page 25: ...01 1 2 Boiler Drain 10 1 R86BC0004 2 Row Hot Water Coil 6 x 39 11 1 R78AA0007 Standard 4 GPM Circulating Pump 120V 1 2 Inlet and Outlet 11 1 R78AA0008 Optional 7 GPM Pump 120V 3 4 Inlet and Outlet 12...

Page 26: ...ater Coil 6 x 46 11 1 R78AA0007 Standard 4 GPM Circulating Pump 120V 1 2 Inlet and Outlet 11 1 R78AA0008 Optional 7 GPM Pump 120V 3 4 Inlet and Outlet 12 1 R87BAE003 Galvanized G90 Drain Pan With Coat...

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