Toyotomi HC-190 User manual

CONTENTS
IMPORTANT
READ AND UNDERSTAND INSTRUCTIONS BEFORE INSTALLING OR USING UNIT.
RETAIN INSTRUCTIONS FOR FUTURE REFERENCE. CHECK LOCAL CODES AND ORDINANCES FOR PERMITTED USE.
SECTION A:
Specifications
SECTION B:
Unpacking
SECTION C:
Safety Tips for Installation
SECTION D:
Installation
Selecting a Location
Plumbing
Removing Trapped Air
Permanent Wiring Installation
External Output Terminal Wiring
Wiring For External Output
SECTION E:
Operating Controls and Part Names
SECTION F:
Safety Tips for Operation
SECTION G:
Before use
Operation
SECTION H:
Test Run
SECTION I:
Routine Maintenance
SECTION J:
Troubleshooting
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HEAT CONVECTOR
INSTALLATION AND OPERATION INSTRUCTIONS
MODEL HC-190

1
Model: HC-190
Type: Hot Water Heating, Floor Standing Type
Heat Rating Range: 4,050 to 20,000 BTU/h (1.2 to 5.8 kW)
*See the chart below for details.
Max. Allowable Pressure: 142 PSI (0.98 MPa)
Heat Exchanger Capacity: 0.16 gal. (0.6 L)
Flow Rate Range: 0.5 gal./min. to 1.5 gal./min. (1.89 to 5.68 L/min.)
Hot Water Temperature: 110˚F – 190˚F (43˚C – 87.8˚C)
Noise Level High: 40 dBA Med: 35 dBA Low: 23 dBA
NOTE: Noise levels tested at 2.5 m.
Air Volume High: 226 CFM Med: 141 CFM Low: 64 CFM
Operation Mode: Auto Fan Mode – 4 fan speeds (High/Med/Low/Off)
Manual Fan Mode – 3 fan speeds (High/Med/Low)
Dimensions (W × H × D): 28-3/8” × 15-1/4” × 7-3/16” (720 × 387 × 182 mm)
Weight: 27.5 lbs. (12.5 kg)
Set Temperature Range: 50˚F – 90˚F (12˚C – 30˚C)
Electrical Rating: 120 Volts AC, Single phase 60 Hz
High - 37W (0.4A)
Med - 16W
Low - 9W
Electrical Current Fuse: 5A
Heating Performance:
Hydraulic Resistance
Circulation Water Volume Resistance
1.5 G (5.68 L/min)
1.0 G (3.79 L/min)
0.5 G (1.89 L/min)
7.0 PSI/48 kPa
3.2 PSI/22 kPa
0.9 PSI/6 kPa
4026 BTU 4991 BTU 5939 BTU 6905 BTU 7870 BTU 8818 BTU 9784 BTU 10732 BTU 11697 BTU
4987 BTU 6183 BTU 7357 BTU 8553 BTU 9748 BTU 10923 BTU 12118 BTU 13293 BTU 14488 BTU
5479 BTU 6775 BTU 8048 BTU 9345 BTU 10641 BTU 11914 BTU 13211 BTU 14484 BTU 15780 BTU
4372 BTU 5421 BTU 6451 BTU 7500 BTU 8548 BTU 9578 BTU 10627 BTU 11657 BTU 12706 BTU
5793 BTU 7182 BTU 8547 BTU 9936 BTU 11325 BTU 12690 BTU 14079 BTU 15443 BTU 16832 BTU
6427 BTU 7952 BTU 9449 BTU 10974 BTU 12498 BTU 13995 BTU 15520 BTU 17017 BTU 18541 BTU
4459 BTU 5529 BTU 6579 BTU 7649 BTU 8718 BTU 9769 BTU 10839 BTU 11889 BTU 12959 BTU
5993 BTU 7430 BTU 8841 BTU 10278 BTU 11716 BTU 13127 BTU 14564 BTU 15976 BTU 17413 BTU
6933 BTU 8578 BTU 10195 BTU 11841 BTU 13487 BTU 15103 BTU 16749 BTU 18365 BTU 20011 BTU
(BTU)
Room Temperature: 68˚F (20˚C)
(kW)
Room Temperature: 68˚F (20˚C)
GPM (L/min) Fan Speed
Circulation Water Volume Temperature of Circulation Water
Low
Medium
High
Low
Medium
High
Low
Medium
High
0.5 GPM (1.89 L/min)
1 GPM (3.79 L/min)
1.5 GPM (5.68 L/min)
SECTION A:
SPECIFICATIONS
110˚F (43˚C) 120˚F (49˚C) 130˚F (54˚C) 140˚F (60˚C) 150˚F (66˚C) 160˚F (71˚C) 170˚F (77˚C) 180˚F (82˚C) 190˚F (88˚C)
1.19 kW 1.47 kW 1.75 kW 2.03 kW 2.31 kW 2.59 kW 2.88 kW 3.15 kW 3.44 kW
1.48 kW 1.83 kW 2.17 kW 2.52 kW 2.87 kW 3.21k W 3.57 kW 3.91 kW 4.26 kW
1.62 kW 2.00 kW 2.37 kW 2.75 kW 3.13 kW 3.51 kW 3.89 kW 4.26 kW 4.64 kW
1.29 kW 1.60 kW 1.90 kW 2.21 kW 2.51 kW 2.82 kW 3.12 kW 3.42 kW 3.73 kW
1.71 kW 2.12 kW 2.52 kW 2.93 kW 3.33 kW 3.73 kW 4.14 kW 4.54 kW 4.95 kW
1.90 kW 2.34 kW 2.78 kW 3.23 kW 3.68 kW 4.11 kW 4.56 kW 5.00 kW 5.45 kW
1.32 kW 1.63 kW 1.94 kW 2.25 kW 2.56 kW 2.87 kW 3.18 kW 3.49 kW 3.81 kW
1.77 kW 2.19 kW 2.61 kW 3.03 kW 3.45 kW 3.86 kW 4.28 kW 4.70 kW 5.12 kW
2.05 kW 2.53 kW 3.00 kW 3.48 kW 3.97 kW 4.44 kW 4.92 kW 5.40 kW 5.88 kW
GPM (L/min) Fan Speed
Circulation Water Volume Temperature of Circulation Water
Low
Medium
High
Low
Medium
High
Low
Medium
High
0.5 GPM (1.89 L/min)
1 GPM (3.79 L/min)
1.5 GPM (5.68 L/min)
110˚F (43˚C) 120˚F (49˚C) 130˚F (54˚C) 140˚F (60˚C) 150˚F (66˚C) 160˚F (71˚C) 170˚F (77˚C) 180˚F (82˚C) 190˚F (88˚C)
Operation panel Front panel Air filter
External output
(for circulation control or zone valve)
Main circuit board
Transformer
Thermistor
(Water Temperature)
Fan
Junction box
Water return
(NPT 1/2 female)
Water supply
(NPT 1/2 female)
Thermistor
(Room Temperature)
Louvers
Heat exchanger
Fan moter
28 - 3/8” (720 mm)
7 - 3/16”
(182 mm)
7 - 3/16”
(182 mm) 9/16” (15 mm)
1-13/16” (46 mm)
1-9/16” (40 mm)
15 - 1/4” (387 mm)
4 - 7/8” (124 mm)
1-3/8” (35 mm)
90˚
SECTION B:
UNPACKING
UNPACKING
1. Unpack the unit carefully.
2. Check to see if there are any loose screws that may have occurred in transit.
3. Take accessories and the instruction manual out of the carton.
ACCESSORY PARTS
1. Installation and Operation Instructions
2. Warranty Card
3. Wall Fixing Kit (Wall bracket – 2 sets, Screw – 2 pcs., Wooden screw – 2 pcs.)
DIMENSIONAL OUTLINE
Air release screw

2
Model: HC-190
Type: Hot Water Heating, Floor Standing Type
Heat Rating Range: 4,050 to 20,000 BTU/h (1.2 to 5.8 kW)
*See the chart below for details.
Max. Allowable Pressure: 142 PSI (0.98 MPa)
Heat Exchanger Capacity: 0.16 gal. (0.6 L)
Flow Rate Range: 0.5 gal./min. to 1.5 gal./min. (1.89 to 5.68 L/min.)
Hot Water Temperature: 110˚F – 190˚F (43˚C – 87.8˚C)
Noise Level High: 40 dBA Med: 35 dBA Low: 23 dBA
NOTE: Noise levels tested at 2.5 m.
Air Volume High: 226 CFM Med: 141 CFM Low: 64 CFM
Operation Mode: Auto Fan Mode – 4 fan speeds (High/Med/Low/Off)
Manual Fan Mode – 3 fan speeds (High/Med/Low)
Dimensions (W × H × D): 28-3/8” × 15-1/4” × 7-3/16” (720 × 387 × 182 mm)
Weight: 27.5 lbs. (12.5 kg)
Set Temperature Range: 50˚F – 90˚F (12˚C – 30˚C)
Electrical Rating: 120 Volts AC, Single phase 60 Hz
High - 37W (0.4A)
Med - 16W
Low - 9W
Electrical Current Fuse: 5A
Heating Performance:
Hydraulic Resistance
Circulation Water Volume Resistance
1.5 G (5.68 L/min)
1.0 G (3.79 L/min)
0.5 G (1.89 L/min)
7.0 PSI/48 kPa
3.2 PSI/22 kPa
0.9 PSI/6 kPa
4026 BTU 4991 BTU 5939 BTU 6905 BTU 7870 BTU 8818 BTU 9784 BTU 10732 BTU 11697 BTU
4987 BTU 6183 BTU 7357 BTU 8553 BTU 9748 BTU 10923 BTU 12118 BTU 13293 BTU 14488 BTU
5479 BTU 6775 BTU 8048 BTU 9345 BTU 10641 BTU 11914 BTU 13211 BTU 14484 BTU 15780 BTU
4372 BTU 5421 BTU 6451 BTU 7500 BTU 8548 BTU 9578 BTU 10627 BTU 11657 BTU 12706 BTU
5793 BTU 7182 BTU 8547 BTU 9936 BTU 11325 BTU 12690 BTU 14079 BTU 15443 BTU 16832 BTU
6427 BTU 7952 BTU 9449 BTU 10974 BTU 12498 BTU 13995 BTU 15520 BTU 17017 BTU 18541 BTU
4459 BTU 5529 BTU 6579 BTU 7649 BTU 8718 BTU 9769 BTU 10839 BTU 11889 BTU 12959 BTU
5993 BTU 7430 BTU 8841 BTU 10278 BTU 11716 BTU 13127 BTU 14564 BTU 15976 BTU 17413 BTU
6933 BTU 8578 BTU 10195 BTU 11841 BTU 13487 BTU 15103 BTU 16749 BTU 18365 BTU 20011 BTU
(BTU)
Room Temperature: 68˚F (20˚C)
(kW)
Room Temperature: 68˚F (20˚C)
GPM (L/min) Fan Speed
Circulation Water Volume Temperature of Circulation Water
Low
Medium
High
Low
Medium
High
Low
Medium
High
0.5 GPM (1.89 L/min)
1 GPM (3.79 L/min)
1.5 GPM (5.68 L/min)
SECTION A:
SPECIFICATIONS
110˚F (43˚C) 120˚F (49˚C) 130˚F (54˚C) 140˚F (60˚C) 150˚F (66˚C) 160˚F (71˚C) 170˚F (77˚C) 180˚F (82˚C) 190˚F (88˚C)
1.19 kW 1.47 kW 1.75 kW 2.03 kW 2.31 kW 2.59 kW 2.88 kW 3.15 kW 3.44 kW
1.48 kW 1.83 kW 2.17 kW 2.52 kW 2.87 kW 3.21k W 3.57 kW 3.91 kW 4.26 kW
1.62 kW 2.00 kW 2.37 kW 2.75 kW 3.13 kW 3.51 kW 3.89 kW 4.26 kW 4.64 kW
1.29 kW 1.60 kW 1.90 kW 2.21 kW 2.51 kW 2.82 kW 3.12 kW 3.42 kW 3.73 kW
1.71 kW 2.12 kW 2.52 kW 2.93 kW 3.33 kW 3.73 kW 4.14 kW 4.54 kW 4.95 kW
1.90 kW 2.34 kW 2.78 kW 3.23 kW 3.68 kW 4.11 kW 4.56 kW 5.00 kW 5.45 kW
1.32 kW 1.63 kW 1.94 kW 2.25 kW 2.56 kW 2.87 kW 3.18 kW 3.49 kW 3.81 kW
1.77 kW 2.19 kW 2.61 kW 3.03 kW 3.45 kW 3.86 kW 4.28 kW 4.70 kW 5.12 kW
2.05 kW 2.53 kW 3.00 kW 3.48 kW 3.97 kW 4.44 kW 4.92 kW 5.40 kW 5.88 kW
GPM (L/min) Fan Speed
Circulation Water Volume Temperature of Circulation Water
Low
Medium
High
Low
Medium
High
Low
Medium
High
0.5 GPM (1.89 L/min)
1 GPM (3.79 L/min)
1.5 GPM (5.68 L/min)
110˚F (43˚C) 120˚F (49˚C) 130˚F (54˚C) 140˚F (60˚C) 150˚F (66˚C) 160˚F (71˚C) 170˚F (77˚C) 180˚F (82˚C) 190˚F (88˚C)
Operation panel Front panel Air filter
External output
(for circulation control or zone valve)
Main circuit board
Transformer
Thermistor
(Water Temperature)
Fan
Junction box
Water return
(NPT 1/2 female)
Water supply
(NPT 1/2 female)
Thermistor
(Room Temperature)
Louvers
Heat exchanger
Fan moter
28 - 3/8” (720 mm)
7 - 3/16”
(182 mm)
7 - 3/16”
(182 mm) 9/16” (15 mm)
1-13/16” (46 mm)
1-9/16” (40 mm)
15 - 1/4” (387 mm)
4 - 7/8” (124 mm)
1-3/8” (35 mm)
90˚
SECTION B:
UNPACKING
UNPACKING
1. Unpack the unit carefully.
2. Check to see if there are any loose screws that may have occurred in transit.
3. Take accessories and the instruction manual out of the carton.
ACCESSORY PARTS
1. Installation and Operation Instructions
2. Warranty Card
3. Wall Fixing Kit (Wall bracket – 2 sets, Screw – 2 pcs., Wooden screw – 2 pcs.)
DIMENSIONAL OUTLINE
Air release screw

3
The instructions which are contained in this manual are classified into the following two types, which are “WARNING”
and “CAUTION”. These instructions are intended to provide important information for safe operation.
“WARNING” indicates the possibility of causing the user a fatal accident or serious injury if the unit is incorrectly
operated.
“CAUTION” indicates the possibility of causing the user injuries or material damages if the unit is incorrectly
operated.
WARNING
1. Improper installation, adjustment, modification, or service and maintenance by an unauthorized person may cause
SERIOUS UNIT DAMAGE, BODILY INJURY, HAZARD OR PROPERTY DAMAGE. This unit should be installed by a
licensed, authorized person(s) due to the necessity of making electrical and water connections. Refer to the
installation and operation instructions for assistance, or consult your dealer for further information.
2. HAZARD OF ELECTRICAL SHOCK! Before removing any access panels of unit for service, make sure the
electrical supply to the unit is shut off. Failure to do this may result in HAZARD, SERIOUS BODILY INJURY, OR
PROPERTY DAMAGE.
3. Check and comply with all state, and local codes before beginning the installation.
CAUTION
1. Keep the area around the unit clean and free of flammable materials.
2. RISK OF FIRE AND ELECTRIC SHOCK. DO NOT apply any excessive force or pressure to the power supply cord.
Make sure the plug is free of dust. Be sure plug fits the receptacle securely.
SECTION C:
SAFETY TIPS FOR INSTALLATION
WARNING: This unit must be installed in accordance with these instructions, local codes, ordinances and/or in the
absence of local codes National Plumbing standards.
Check and comply with all state and local codes before beginning the installation.
This unit should be installed by a licensed, authorized person(s) due to the necessity of making
electrical and water connections.
SELECTING A LOCATION
Select a place to install the unit where hot water and electric supply are easily available.
1. Select a place which is free of combustible substances.
2. Select a place where proper maintenance and repair can be provided for the unit after installation.
3. Install the unit on level floor.
NOTE: The unit may be installed on the wall directly.
Not less
than 4 in.
Not less
than 4 in.
SECTION D:
INSTALLATION
Not less than 12 in.
(1 ft.)

4
The instructions which are contained in this manual are classified into the following two types, which are “WARNING”
and “CAUTION”. These instructions are intended to provide important information for safe operation.
“WARNING” indicates the possibility of causing the user a fatal accident or serious injury if the unit is incorrectly
operated.
“CAUTION” indicates the possibility of causing the user injuries or material damages if the unit is incorrectly
operated.
WARNING
1. Improper installation, adjustment, modification, or service and maintenance by an unauthorized person may cause
SERIOUS UNIT DAMAGE, BODILY INJURY, HAZARD OR PROPERTY DAMAGE. This unit should be installed by a
licensed, authorized person(s) due to the necessity of making electrical and water connections. Refer to the
installation and operation instructions for assistance, or consult your dealer for further information.
2. HAZARD OF ELECTRICAL SHOCK! Before removing any access panels of unit for service, make sure the
electrical supply to the unit is shut off. Failure to do this may result in HAZARD, SERIOUS BODILY INJURY, OR
PROPERTY DAMAGE.
3. Check and comply with all state, and local codes before beginning the installation.
CAUTION
1. Keep the area around the unit clean and free of flammable materials.
2. RISK OF FIRE AND ELECTRIC SHOCK. DO NOT apply any excessive force or pressure to the power supply cord.
Make sure the plug is free of dust. Be sure plug fits the receptacle securely.
SECTION C:
SAFETY TIPS FOR INSTALLATION
WARNING: This unit must be installed in accordance with these instructions, local codes, ordinances and/or in the
absence of local codes National Plumbing standards.
Check and comply with all state and local codes before beginning the installation.
This unit should be installed by a licensed, authorized person(s) due to the necessity of making
electrical and water connections.
SELECTING A LOCATION
Select a place to install the unit where hot water and electric supply are easily available.
1. Select a place which is free of combustible substances.
2. Select a place where proper maintenance and repair can be provided for the unit after installation.
3. Install the unit on level floor.
NOTE: The unit may be installed on the wall directly.
Not less
than 4 in.
Not less
than 4 in.
SECTION D:
INSTALLATION
Not less than 12 in.
(1 ft.)

5
Supply opening NPT 1/2” Female
Air Release Screw
Return opening NPT 1/2” Female
PLUMBING
NOTE: Make sure the piping for the unit is laid out properly, and also check for any water leakage.
1. Install heat insulation material on the water piping to prevent heat loss.
2. Copper or polyethylene pipe should be used for connecting pipes.
3. It is recommended to install shut-off valves on the supply and return sides for easy removal.
4. It is recommended to install a bypass loop in the water pipes with a shut-off valve.
5.
Be sure to use anti-freezing solution, or non-scale block, or non-slime block, or corrosion-free water for the circulation
water.
Temperature of circulation water has to be less than 190˚F (87.8˚C)
Maximum allowable working pressure has to be less than 142 PSI
REMOVING TRAPPED AIR
When operating for the first time, air may be trapped in the system. To release the air out of the piping and the unit,
follow the procedures below.
1. To remove the air release cover, remove the two (2) screws.
2. Loosen the Air release screw by using the flat head screwdriver. Release the air out of the piping.
3. Tighten the Air release screw after removing all trapped air.
4. Immediately wipe off any spilled water.
5. Attach the Air release cover.
PERMANENT WIRING INSTALLATION
WARNING: TO AVOID ANY RISK OF FIRE AND ELECTRIC SHOCK. Make sure the Main circuit breaker and power
supply cord is disconnected before servicing. Electric shock may cause serious injury. It is
recommended that installation should be conducted by a Licensed Electrician.
PROCEDURE FOR PERMANENT WIRING
POWER SOURCE: 120V AC, 60Hz single phase
1. Turn off the Main circuit breaker. Disconnect power supply cord from the power source.
2. Remove the two (2) screws and Junction box cover on the back side of unit.
3. Disconnect the ground wire (green) from the power supply cord bracket.
4. Disconnect the two power supply wires from Junction box terminal.
5. Squeeze the strain relief bushing with an adjustable pliers to remove the plastic bushing from the unit (right side).
Remove the power supply cord.
6. Remove the Hole cap on the back side of the unit and put it in hole of the right side where the power supply cord
was installed.
7. Use at least AWG 14/2 gauge copper wire to the Junction box, feed wire through hole to the right of Junction box
Cover and use 1/2 inch clamp connector to secure to Heat convector cabinet.
8. Affix the Junction box cover to the unit and insert screws.
Hole cap
POWER SUPPLY 120VAC
SINGLE PHASE 60Hz
GROUND
Junction box coverPower supply cord

6
Supply opening NPT 1/2” Female
Air Release Screw
Return opening NPT 1/2” Female
PLUMBING
NOTE: Make sure the piping for the unit is laid out properly, and also check for any water leakage.
1. Install heat insulation material on the water piping to prevent heat loss.
2. Copper or polyethylene pipe should be used for connecting pipes.
3. It is recommended to install shut-off valves on the supply and return sides for easy removal.
4. It is recommended to install a bypass loop in the water pipes with a shut-off valve.
5.
Be sure to use anti-freezing solution, or non-scale block, or non-slime block, or corrosion-free water for the circulation
water.
Temperature of circulation water has to be less than 190˚F (87.8˚C)
Maximum allowable working pressure has to be less than 142 PSI
REMOVING TRAPPED AIR
When operating for the first time, air may be trapped in the system. To release the air out of the piping and the unit,
follow the procedures below.
1. To remove the air release cover, remove the two (2) screws.
2. Loosen the Air release screw by using the flat head screwdriver. Release the air out of the piping.
3. Tighten the Air release screw after removing all trapped air.
4. Immediately wipe off any spilled water.
5. Attach the Air release cover.
PERMANENT WIRING INSTALLATION
WARNING: TO AVOID ANY RISK OF FIRE AND ELECTRIC SHOCK. Make sure the Main circuit breaker and power
supply cord is disconnected before servicing. Electric shock may cause serious injury. It is
recommended that installation should be conducted by a Licensed Electrician.
PROCEDURE FOR PERMANENT WIRING
POWER SOURCE: 120V AC, 60Hz single phase
1. Turn off the Main circuit breaker. Disconnect power supply cord from the power source.
2. Remove the two (2) screws and Junction box cover on the back side of unit.
3. Disconnect the ground wire (green) from the power supply cord bracket.
4. Disconnect the two power supply wires from Junction box terminal.
5. Squeeze the strain relief bushing with an adjustable pliers to remove the plastic bushing from the unit (right side).
Remove the power supply cord.
6. Remove the Hole cap on the back side of the unit and put it in hole of the right side where the power supply cord
was installed.
7. Use at least AWG 14/2 gauge copper wire to the Junction box, feed wire through hole to the right of Junction box
Cover and use 1/2 inch clamp connector to secure to Heat convector cabinet.
8. Affix the Junction box cover to the unit and insert screws.
Hole cap
POWER SUPPLY 120VAC
SINGLE PHASE 60Hz
GROUND
Junction box coverPower supply cord

7
Wall bracket B
Wooden screw
Wall bracket A
Rubber bushing Cover
EXTERNAL OUTPUT TERMINAL WIRING
This unit has an External output terminal for low-voltage (24 volts or less) contacts to connected to a circulation
pump control or zone valve. When connecting the circulation control or zone valve unit to this terminal, it is possible
to stop the circulation by the output from internal contact switch in the Heat convector. When the Power switch is
ON and there is a call for heat, the internal contact switch is closed. When Power switch is OFF or the Room
temperature reaches 4 degrees above Set temperature the internal contact switch is open.
WIRING FOR EXTERNAL OUTPUT
1. Remove the four (4) screws and the cover on the back side of the unit.
2. Cut the rubber bushing of the cover by a cutter and insert the wire for the circulation control or zone valve.
3. Connect the wire to the terminal block in accordance with the color indication.
4. Fix the cover to the unit with the four (4) screws.
After installation is completed, secure the unit to the wall with the wall fixing kit provided with the unit.
NOTE: Make sure the unit is parallel to the wall.
Universal Switching Relay,
Control or Zone Valve.
[EXTERNAL OUTPUT SPECIFICATIONS]
Contact Rating
Maximum Switching Voltage
Maximum Carrying Current
Maximum Switching Power
Minimum Switching load
3A 24VAC
30VDC
5A
90W
10mA 5VDC
External output terminal
Cover
24 VAC
24 VAC
Note: Use at least
AWG 18 wire.
POWER SUPPLY
120VAC
CIRCULATION
WATER PUMP
Operation panel
Front panel
5. Power lamp
2. AUTO/MANUAL button
4. CHILD LOCK button
6. TIMER lamp 7. TEMP/TIMER/CLOCK set
Water supply (NPT 1/2 female) Water return (NPT 1/2 female)
8. Digital display
10. AUTO/MANUAL indicator
3. TIMER button
9. CHILD LOCK indicator
11. AM/PM indicator
1. Power switch
Junction box
Air filter
External output
(for circulation control or zone valve)
Louvers
12. Thermistor
(Room Temperature)
SECTION E:
OPERATING CONTROLS AND PART NAMES
Air release screw
DIGITAL DISPLAY

8
Wall bracket B
Wooden screw
Wall bracket A
Rubber bushing Cover
EXTERNAL OUTPUT TERMINAL WIRING
This unit has an External output terminal for low-voltage (24 volts or less) contacts to connected to a circulation
pump control or zone valve. When connecting the circulation control or zone valve unit to this terminal, it is possible
to stop the circulation by the output from internal contact switch in the Heat convector. When the Power switch is
ON and there is a call for heat, the internal contact switch is closed. When Power switch is OFF or the Room
temperature reaches 4 degrees above Set temperature the internal contact switch is open.
WIRING FOR EXTERNAL OUTPUT
1. Remove the four (4) screws and the cover on the back side of the unit.
2. Cut the rubber bushing of the cover by a cutter and insert the wire for the circulation control or zone valve.
3. Connect the wire to the terminal block in accordance with the color indication.
4. Fix the cover to the unit with the four (4) screws.
After installation is completed, secure the unit to the wall with the wall fixing kit provided with the unit.
NOTE: Make sure the unit is parallel to the wall.
Universal Switching Relay,
Control or Zone Valve.
[EXTERNAL OUTPUT SPECIFICATIONS]
Contact Rating
Maximum Switching Voltage
Maximum Carrying Current
Maximum Switching Power
Minimum Switching load
3A 24VAC
30VDC
5A
90W
10mA 5VDC
External output terminal
Cover
24 VAC
24 VAC
Note: Use at least
AWG 18 wire.
POWER SUPPLY
120VAC
CIRCULATION
WATER PUMP
Operation panel
Front panel
5. Power lamp
2. AUTO/MANUAL button
4. CHILD LOCK button
6. TIMER lamp 7. TEMP/TIMER/CLOCK set
Water supply (NPT 1/2 female) Water return (NPT 1/2 female)
8. Digital display
10. AUTO/MANUAL indicator
3. TIMER button
9. CHILD LOCK indicator
11. AM/PM indicator
1. Power switch
Junction box
Air filter
External output
(for circulation control or zone valve)
Louvers
12. Thermistor
(Room Temperature)
SECTION E:
OPERATING CONTROLS AND PART NAMES
Air release screw
DIGITAL DISPLAY

9
Main switch turns the unit on or off.
Button switches fan speed to either AUTO and MANUAL.
Button turns Timer operation mode on or off.
The button turns CHILD LOCK operation mode on or off.
Light means the unit is in operation.
Light means the unit operating in Timer setting mode.
TEMP/TIMER/CLOCK set modes can be set by pressing
“–/hour” or “+/min.” buttons.
Displays clock, set temperature, room temperature and
error code.
Light – The unit is in CHILD LOCK mode.
Light – Digital display shows fan speed mode.
Light – Digital display shows current time.
Constantly senses room temperature and supplies
information to the unit so that desired room temperature
can be maintained.
For use in 120V, AC electrical outlet.
1. POWER switch:
2. AUTO/MANUAL button:
3. TIMER button:
4. CHILD LOCK button:
5. POWER lamp:
6. TIMER indicator:
7. TEMP/TIMER/CLOCK set:
8. Digital display:
9. CHILD LOCK indicator:
10. AUTO/MANUAL indicator:
11. AM/PM indicator:
12. Thermistor: (Room Temperature Sensor)
Power supply cord:
The instructions which are contained in this manual are classified into the following two types, which are “WARNING”
and “CAUTION”. These instructions are intended to provide important information for safe operation.
“WARNING” indicates the possibility of causing the user a fatal accident or serious injury if the unit is incorrectly
operated.
“CAUTION” indicates the possibility of causing the user injury or material damages if the unit is incorrectly
operated.
WARNING
1. ALWAYS plug into 120 V, 60 Hz, single phase electrical outlet.
2. Due to high surface temperatures, keep heater away from children, furniture and clothing while in operation.
3. DO NOT touch the Heat exchanger.
4. NEVER insert objects of any kind into the air intake or air outlet.
5. DO NOT unplug if your hands are wet. An electrical shock may occur.
6. DO NOT run power cord under carpets, rugs, or floor mats of any kind.
7. DO NOT apply any excessive force or pressure to the power supply cord.
8. Make sure that the plug is free of dust or debris.
9. DO NOT use an extension cord.
10. RISK OF INJURY FROM MOVING PARTS AND ELECTRICAL SHOCK. Disconnect power cord before servicing
unit.
CAUTION
1. Keep objects more than 20 in. (50 cm) away from front of unit.
2.
DO NOT place animals, plants, or combustion equipment in a place which is subjected to the direct air flow of
the unit.
3. DO NOT ride or place objects on the unit.
4. DO NOT try to repair or alter unit by yourself.
5. DO NOT place flower vase or water containers on the top of the unit.
6. DO NOT block the air inlet or outlet.
7. To prevent abnormal operation and prolong heater life, be sure to perform routine maintenance.
SECTION F:
SAFETY TIPS FOR OPERATION