GlenDimplex Horizontal Fan-forced Heater Owner’s Manual

OWNER’S GUIDE
Horizontal fan-forced heater

IMPORTANT INSTRUCTIONS

When using electrical appliances, basic precautions should always be followed to reduce the risk of fire, electric shock, and  injury to persons, including the following:

1.  Read all instructions before installing or using this heater.
2.  This heater is hot when in use. To avoid burns, do not let bare skin touch hot surfaces. Keep combustible materials, such as furniture, pillows, bedding, papers, clothes, etc., and curtains at least 3 feet (0.9 meters) from the front of the heater and keep them away from the sides and rear.
3.  Extreme caution is necessary when any heater is used by or near children or invalids and whenever the heater is left operating and unattended.
4.  Do not operate any heater after it malfunctions. Disconnect power at the service panel and have a heater inspected by a  reputable electrician before reusing.
5. Do not use outdoors.
6. To disconnect the heater, turn control(s)  to off, and turn off the power to the heater circuit at main disconnect panel.
7. Do not insert or allow foreign objects to enter any ventilation or exhaust opening as this may cause an electric shock or fire,  or damage the heater.
8. To prevent a possible fire, do not block air intakes or exhaust in any manner.
9. A heater has hot and arcing or sparking parts inside. Do not use it in areas where gasoline, paint,  or flammable vapors or liquids are used or stored.
10. Use this heater only as described in this manual. Any other use not recommended by the manufacturer may cause fire,  electric shock, or injury to persons.
11. CAUTION – High temperature, risk of fire, keep electrical cords,  drapery, furnishings, and other combustibles at least 3 feet  0.9 m) from the front of the heater and away from the side.

SAVE THESE INSTRUCTIONS

TOOLS REQUIRED

A multi-purpose tool or something to cut your existing drywall or gypsum board.

INSTALLATION INSTRUCTIONS

1.  All electrical work and materials must comply with the National Electric Code (NEC), the Occupational Safety and Health Act (OSHA), and all state and local codes.
2. Use copper conductors only.
3.  DO NOT install the heater directly above the bathtub or sink. DO NOT install in shower stall area. The manufacturer recommends a minimum 2 foot (61 cm) side clearance.
4. The heater must be installed in a wall can: Model RM – wall can model RMC
5. DO NOT install the heater in a  floor, in the ceiling, below a towel bar, behind a door, or anywhere the air discharge may be locked in any manner.
6. 6. A heater has hot and arcing or sparking parts inside. Do not use it in areas where gasoline, paint, or flammable vapors or liquids are used or stored.
7.  Connect grounding lead to grounding wire provided. Keep all foreign objects out of the heater
8.  CAUTION – High temperature,  riskf fire, keep electrical cords, rapery, furnishings, and other combustibles at least 3 feet (0.9  m) from the front of the heater andaway from the side.

KNOW YOUR VOLTAGE!

If you are uncomfortable working with electricity, running an electrical supply wire or installing a circuit breaker, please consult a  licensed electrician.

•  Make sure the heater is the same voltage as the electrical supply wires you’re using. The wire size must be correct for the voltage, the heater wattage, and the circuit breaker.
• CHECK YOUR BREAKER! If you’re replacing an existing heater, check the labels of the old heater and use the same voltage.
• Connecting a 120-volt heater to a 240 volt electrical supply will destroy the heater and void your warranty! Connecting a 240-volt heater to a 120 volt electrical supply will only give you one-quarter of the heat output.
  Unanswered questions? Call our technical support team at 888-346-7539.

PARTS OF YOUR HEATER

TIPS BEFORE YOU BEGIN

• Verify power has been turned off before starting any work!
• The model RM can only be mounted with the element up. It cannot be mounted in the ceiling. For multiple heater wiring, see page 6.
•  For cleaner performance and longer heater life, install your heater 12 inches from the floor.
•  All models can be installed to be Americans with Disabilities Act (ADA) compliant. Check your state and local requirements.
• A thermostat is required for all models. An electronic wall thermostat is recommended for ultimate comfort and energy savings.
• The wall can label arrow shows the correct mounting orientation (arrow must point up).

STEP 1: Cut a hole in the wall next to a wall stud
If you haven’t installed drywall yet, skip this step.

STEP 2: Locate or route electrical supply wires
Route the electrical supply wire from the circuit breaker to the wall thermostat, and then to the heater location.
Remove a knockout from the wall can and attach the supply wire with a cable clamp connector (not included) leaving a minimum of 6 inches wire lead (See Figure 2).
STEP 3: Mount the wall can
If you haven’t installed drywall yet, make sure the front of the wall can extend beyond the front edge of the wall stud to match the drywall depth (Figure 2).
If you already have drywall installed, rotate the wall can into the cutout legs first. Keep the front of the wall can flush with the drywall.
Fasten the wall can to a stud (on either left or right side), with two screws (not included) through the larger holes provided in the wall can (Figure 2).
tip: if not installing at minimum height, for additional support in new construction, legs can bend 90 degrees on the wall can (see  Figure 2).
Proceed to STEP 4. If you have a multi-watt model and want to lower the wattage, proceed to HOW TO CHANGE THE WATTAGE.

INSERT THE HEATER ASSEMBLY IN THE WALL CAN

STEP 4: Wire connections
Your heater has two connection wires and the wall can have a green grounding wire. Your supply wire has two connection wires and a supply ground wire.

1.  Connect supply ground wire to green grounding wire in the wall can (See Figure 3).

2.  Connect one of the supply wires to one of your heater wires with a wire connector (not included):
   A. for 240 volts, it doesn’t matter which heater wire (Figure 3);
   B. for 120 volts, connect the neutral (white) supply wire to the white heater wire (Figure 3).

3.  Connect the remaining supply wire to the remaining heater wire with a wire connector (not included) (See Figure 3).

4.  Insert the bottom edge of the heater assembly into the bottom of the wall can (See Figure 3).

5.  Push all wires back into the side of the wall can. Make sure connections are tight and none of the wires are caught between the heater assembly and the wall can.

6.  Attach the heater assembly at top of the wall can with the screw provided.

STEP 5: green grounding wire
Attach grill with the screws provided.
tip: hand tightens both screws first before securing. The open part of the grill goes on the bottom.
Turn the power on at the main disconnect panel. Proceed to OPERATING INSTRUCTIONS.

HOW TO CHANGE THE WATTAGE

Multi-watt models RM162, RM168, and RM151 only
Multi-watt RM models offer a variety of heat output options. They are factory set to the maximum wattage (Figure 4). If you have a multi-watt model, you can change the heating element wire connections to a lower wattage on the right- hand side of the heater assembly (See Figures 5 and 6).

Model| Maximum Wattage

Figure 4

| Medium Wattage

Figure 5

| Lowest Wattage

Figure 6

---|---|---|---
RM162, RM168| 1600| 900| 700
RM151| 1500| 1000| 500

Figure 4
tip: to remove terminals easier pull and wiggle slightly back and forth at the same time.

Figure 5
remove blue terminal and wrap end with electrical tape; secure to other wires with a zip tie.

Figure 6
remove blue terminal and wrap the end with electrical tape; secure to other wires with a zip tie. Moveyellow terminal and attach it here the blue terminal was removed.

If you change the wattage, mark the wiring diagram on the back of the heater with the wattage used for future reference. Proceed to STEP 4.

MULTIPLE HEATERS WITH ONE THERMOSTAT

More than one heater can be wired in parallel on the same circuit breaker (be sure to check national and local codes for safety requirements). Additional electrical supply wire and cable clamp connectors are required, and you’ll need to use a wall thermostat. When wiring multiple heaters to one thermostat, the heaters must be in the same room and be spaced a minimum of three feet apart. The maximum amperage load you can put on one circuit breaker is limited to either 80% of the circuit breaker capacity, or the maximum amperage rating of the thermostat, whichever is lower.

1. Route the electrical supply wire from the circuit breaker to the wall thermostat. At the wall can of heater #1, remove two knockouts and attach two sets of electrical supply wires with two cable clamp connectors (not included) leaving a minimum of 6  inches wire lead. One set of electrical supply wires goes to the wall thermostat and the other set goes to heater #2 (See Figure 8).
2.  There are two supply ground wires in the wall can of heater #1 (See Figure 7). Connect the green ground wire in the wall can of heater #1 to each of the ground wires from each set of the supply wires (See Figure 7).
3. For heater #1, connect each heater wire to one of the supply wires going to the thermostat, and one of the supply wires going to heater #2. Each of the wires from heater #1 must have a 3-wire connection.
4. For heater #2, make the connections in the wall can as shown in Figure 8 above.
5.  Turn the power back on at the main disconnect panel.
6. Proceed to OPERATING INSTRUCTIONS.

WARRANTY

For more effective and safer operation and to prolong the life of the heater, read the Owner’s Guide and follow the instructions.  Failure to properly maintain the heater will void any warranty and may cause the heater to function improperly.
LIMITED FIVE YEAR WARRANTY: Glen Dimplex Americas will repair or replace any RM Horizontal Fan-forced Heater found to be defective within five years after the date of purchase.
These warranties do not apply:

1. Damage occurs to the product through improper installation or incorrect supply voltage;
2. Damage occurs to the product through improper  maintenance, misuse, abuse, accident, or alteration;
3. The use of unauthorized accessories or unauthorized components constitutes an alteration and voids all warranties. Refer to the website gdaheat.com or call customer service at 888-346-7539 for a list of authorized accessories and components.
4. Glen Dimplex Americas’ warranty is limited to repair or replacement.
5. In the event Glen Dimplex Americas elects to replace any part of your product, the replacement parts are subject to the same warranties as the product. The installation of replacement parts does not modify or extend the underlying warranties.  Replacement or repair of any Glen Dimplex Americas product or part does not create any new warranties.

If you believe your product is defective, please contact Glen Dimplex Americas during the warranty period, for instructions on how to have the repair or replacement process.
Parts and Service
Visit gdaheat.com for information on where to obtain parts and services.

To register your product, visit gdaheat.com

OPERATING INSTRUCTIONS

1. The heater must be properly installed before it is used.
2. Do not operate without a grill.
3.  Do not tamper with the high-temperature safety shutoff.

How to operate your heater
The room temperature is controlled by a thermostat located either on the wall or on the heater.
Once installation is complete and power has been restored, follow the steps below for your thermostat.
If you have a wall or built-in thermostat:

1.  Turn the thermostat knob all the way to the right.
2. When the room reaches your comfort level, turn the knob to the left, just until it clicks and the heater turns off. The heater will automatically keep the room temperature around this setting.
3. To reduce the room temperature, turn the knob to the left. To increase the room temperature, turn the knob to the right.

If you have an electronic wall thermostat, follow the instructions in the programming and operating guide included with your thermostat.
PLEASE NOTE: On initial start-up, the heater may cause an odor due to the manufacturing process. It typically goes away within several hours.

More frequently asked questions on our website here: gdaheat.com

MAINTAINING YOUR HEATER

Clean heater at least every 6 months or as required. Do not lubricate the motor.

1. Turn off power at the main disconnect panel.
2.  Wait for the element to cool.
3.  Remove thermostat knob (if any) and grill.
4. Wash grill with hot soapy water and dry.
5.  Blow air through the heating element with a hairdryer or shop vacuum on the blow cycle.
6. Clean the fan with a vacuum cleaner.
7. Replace cover and thermostat knob (if any).
8. Turn the power back on at the main disconnect panel.

Any service other than cleaning should be performed by an authorized service representative.
High-temperature safety shutoff
All RM heaters come with a built-in high-temperature safety shutoff that stops electricity flowing to the heater if it gets too hot inside. See TROUBLESHOOTING on Page 8 if you’re experiencing problems with your heater.

INTERNAL HEATER WIRING DIAGRAMS

TROUBLESHOOTING

Symptom                     Problem Solution

Heater doesn’t work at all.|

1.  Supply connections are loose.
2. The heater has tripped its built-in high-temperature safety shutoff and electricity has stopped flowing to the heater.
3.  The circuit breaker is faulty.

|

1.  Turn off power at main disconnect panel. Inspect and/ or tighten all the wire connectors inside the heater and at any connection points inside junction boxes or at the wall thermostat.
2.  TO RESET: Turn the power off at the main disconnect panel. Allow 20 minutes to cool. Make sure the heater is not blocked and is clean. Restore power. If the high-temperature safety shutoff trips more than once a day, replace the heater.
3. Call a licensed electrician.

Breaker trips immediately after installing the heater.|

1.  A short circuit exists in the electrical supply wires or heater wiring.
2. Circuit breaker and heater are not the same voltage.
3. Circuit is overloaded.
4. Circuit breaker is faulty.

|

1. An incorrect connection in the heater or electrical supply wires may cause sparking or arcing. Inspect all heater and electrical supply wiring insulation for damage or call an electrician.
2.  Double-check the voltage of the heater to make sure it matches the voltage of the circuit. Replace the heater with a model that is 240 volts.
3. Use a lower wattage heater, or reduce the number of heaters on the circuit.
4. Call a licensed electrician.

Heater blows cold air or doesn’t get hot.|

1. Circuit breaker is 120 volts and heater is 240 volts.
2. Element has failed.

|

1. Double-check the voltage of the heater to make sure it matches the voltage of the circuit. Replace the heater with a model that is 120 volts.
2.  Replace heater.

Heater smells after installation or not being used.|

1. Odor from the element manufacturing process.
2. Dust or lint inside the heater.
3. Supply connections are loose.

|

1.  On initial start-up, the heater may cause an odor due to the manufacturing process. It typically goes away within several hours.
2. Clean heater (see “MAINTAINING YOUR HEATER” on page 7 for instructions).
3. Turn off power at the main disconnect panel. Inspect and/ or tighten all the wire connectors inside the heater and at any connection points inside junction boxes or at the wall thermostat.

Fan/motor doesn’t spin or spins slow.|

1. Circuit breaker is 120 volts and the heater is 240 volts.
2. Defective motor or motor out of alignment.

|

1. Double-check the voltage of the heater to make sure it matches the voltage of the circuit. Replace the heater with a model that is 120 volts.
2. Replace the motor blower.

Heater doesn’t turn off.|

1.  The thermostat is defective.
2. No thermostat is hooked up to control the heater.
3. Incorrect heater wattage for room size.

|

1. Replace the thermostat.
2. A thermostat is required for all RM heaters. Purchase a built-in or wall thermostat for your heater.
3. Install a higher wattage model or additional heaters if the circuit allows.

If you are uncomfortable working with electricity, running electrical supply wire, or installing a circuit breaker, please consult a licensed electrician.

Thank you for your purchase! Question or problem? Let us solve it with a single phone call, email, or online chat! We’ll save you a  trip back to the store!
Customer Service:
Phone: 888-346-7539 (from US or Canada)
Email: cs@glendimplexamericas.com
Assembled in USA
gdaheat.com

Reduce-Reuse-Recycle
This product is made primarily of recyclable materials. You can reduce your carbon footprint by recycling this product at the end of its useful life. Contact your local recycling support center for further recycling instructions.

©2021 Glen Dimplex Americas Printed in USA
Rev 25/02/21 #730104

References

• GDA Heat
• Frequently Asked Questions – GDA Heat
• Parts – GDA Heat
• Registration – GDA Heat

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