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7201810101R03

Floor Drop-In Heater

FFIH15A31 Series

 Installation Instructions

 

ImportAnt InStructIonS

When using electrical appliances, basic precautions should 

always be followed to reduce the risk of fire, electric shock 

and injury to person, including the following: 

Read all instructions before using this heater.

1. 

A heater has hot and arcing or sparking parts inside.  Do 

2. 

not use it in areas where gasoline, paint or flammable 

liquids are used or stored.
This heater is hot when in use.  To avoid burns, do not let 

3. 

bare skin touch hot surfaces.  If provided, use handles 

when moving this heater.  Keep combustible materials 

such as: furniture, pillows, bedding, papers, clothes and 

curtains away from heater.
To prevent a possible fire, do not block air intakes or 

4. 

exhaust in any manner.  Do not use on soft surfaces like 

a bed where openings may become blocked.

Do not insert or allow foreign objects to enter any venti-

5. 

lation or exhaust opening as this may cause an electric 

shock or fire, or damage the heater.

SAVE tHESE InStructIonS

Congratulations on purchasing a heater from Dimplex North 

America. Your heater is manufactured using the highest 

quality materials and workmanship and will provide many 

years of trouble free service.  

!

 notE: 

It is extremely important to read all information 

labels. Care must be taken to ensure that the heater is 

rated the same voltage as the electrical supply wires. 

Failure to do so could result in unsafe heater operation as 

well as damage to the unit. If replacing an existing heater, 

check the labels of the old heater to ensure the voltage of 

the new heater is compatible.

!

 notE: 

Heaters may be installed in poured concrete floor 

construction.  Opening should be framed with wood so 

that the heater box is inserted in wood frame.  DO NOT 

use heater box as a form when pouring concrete.

!

 notE:

 This heater is equipped with a manual reset de

-

vice.  Remove interior to reset.

!

 notE:  

Air and grille temperatures conform to CSA & UL 

regulations but may discolour certain materials, particu

-

larly those materials incorporating clear vinyl. Materials 

should be checked prior to installation to determine if 

discolouration or distortion would occur in the vicinity of 

60°C (140° F).

Provide floor opening 7 1/4” (184 mm) wide X 14 1/4” 

1. 

(362 mm) long x 8” (203 mm) deep. (Figure 1)
Maintain a minimum clearance of 6” (153 mm) from all 

2. 

walls.

Remove grille and pull out inner assembly.

3. 

Remove terminal cover and appropriate knockout for 

4. 

supply wires.

Insert outer case into floor.  Flange must be located at 

5. 

top of finished floor or carpet.  Furring strips as thick as 

the pad and carpet must be used.  Edge of carpet and 

pad must not extend into heater.  Secure outer case to 

the floor with screws or nails.  Pull through about 6” (153 

mm) of supply wires and connect to pigtails.  Connect 

green wire to ground screw.

Replace terminal cover.

6. 

Make sure outer case is free of all dirt and debris.  Re

-

7. 

place inner assembly in outer case and secure grille.

  

WArnIng: Do not block AIr FloW In Any WAy 

WItH DrApES, rugS or otHEr objEctS.

  cAutIon: 

Should the High Temperature light come on, 

disconnect power to the heater, or turn down the thermostat 

fully counterclockwise and call a licensed electrician.  Do not 

use heater until problem is determined and fixed.

FIgurE 1

FIgurE 2

 operation

This heater must be properly installed before it is used.

1. 

Prior to energization remove all construction dirt (plaster, 

2. 

sawdust, etc.) from interior and exterior of heater.

Dimplex heaters are designed and tested for safe and 

trouble-free operation.  All Dimplex heaters are protected 

against overheating by a built-in thermal cutout.  Free airflow 

throughout the heater is extremely important for the most 

efficient operation of the heater.  Restricted airflow may 

cause the thermal overload protector to cycle the heater “ON 

and OFF”.  A cycling heater will not supply sufficient heat to 

the room.

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