Dimplex RFI815D31W, RFI820D41, RFI820D31, RFI820D31W, RFI820D41W Installation, Operation & Maintenance Instructions Manual

Forced Air Heater

1-888-346-7539

Installation, Operation & Maintenance Instructions

Remove heater from carton. The front grille and trim can
be lifted off assembly, and placed in carton to prevent
damage. Remove screws securing heater assembly to
the recess box and separate. (Fig. 1).

Note - Mount the heater a minimum of 12” (30.5cm) from the

finished floor, and a minimum of 6” (15cm) from any
vertical surface if installed in the ceiling.

Recessed Installation

1. The recess box provided with the heater is designed for
attachment between studs placed on 16” (40.6cm)
centres. If different spacing exists, construct frame tosuit
the box in order to avoid any vibration and noise caused
by loose mounting (Fig. 2a).

2. Note orientation of box (“TOP” shown on recess box) and
secure to studs using four holes provided on side flanges,
ensuring these flanges are flush with finished surface of
wall or ceiling (Fig. 2b).

Surface Installation

1. Secure optional surface mount box (Part No. RFP8D) by
angling screws through holes provided in rear of surface
box into studs or finished surface.

2. Position surface box into recess box and secure with four
screws provided in parts bag of surface box.

Series RFI-D for wall or ceiling mounting

Fig.1

GROUND
SCREW

FRONT PANEL
(GRILLE) & TRIM FRAME

HEATER
ASSEMBLY

RECESS BOX

Fig. 2

(a) (b)

19 3/4”
(50cm)

MIN. 12”
(30.5cm)

14 1/4”
(36cm)

SIDE FLANGES

FINISHED WALL

SURFACE

15”

(38cm)

FINISHED FLOOR

7/8” (22MM) DIA. KNOCKOUT

14 1/4”
(36cm)

3 5/8”
(9cm)

19 3/4”
(50cm)

MIN. 12”
(30.5cm)

NOTE: Dimensions are shown as size of rough opening in stud wall

Fig. 3

A

C

(A)Place frame over top of tabs.
(B) Push in at bottom until frame is flush with front panel.

(C) Insert two screws to hold frame in place.

C

B

Supply Wiring and Heater Installation

1. Insert approximately 15” (38cm) of supply wire into recess box through knockout provided in upper left hand corner (Fig. 2b).
Wire should be rated for a minimum of 75°C (167°F)

2. Connect power supply to terminals provided marked L1 and L2. Ground wire should be secured to green ground screw
provided on side of heater assembly (Fig. 1).

3. All units are factory prewired for operation with built-in thermostat. If remote thermostat operation is required follow
appropriate wiring diagram located on inside of recess box.

TIP - It is recommended that for ceiling mount applications a remote thermostat be used in order to provide superior temperature

control.

NOTE -All wiring must comply with National Electrical Code and local codes.

4. Secure heater assembly to recess box using four 8 - 18 x 5/16” screws provided. Ensure that the four speed clips are
attached to heater assembly top and bottom.

Front Panel Installation

1. Remove trim frame from front panel assembly. (Fig. 3)

2. If tamperproof built-in or remote thermostat operation is required, secure the louvered door to the front panel using 2 No. 6
screws (not included) through the holes provided. The knob can then be removed and adjustment of the thermostat can be
made using a slotted screwdriver through the front panel.

3. Check to see that the fan blade is free to turn and that no residue remains in the unit. Front panel can then be secured to
assembly using four 8 - 18 1/4” screws provided.

Operation and Maintenance

1. Set thermostat to desired temperature and both fan and heat should come on. Note that when desired temperature is
reached the fan operation will continue for a short period after the elements have de-energized in order to remove residual
heat from the unit.

2. The fan motor is permanently lubricated and sealed at the factory and is maintenance free.

3. It is suggested that at the beginning of each season the front panel is removed and the wire connection condition is checked
and the unit is cleaned of dust and dirt with a vacuum cleaner.

NOTE - Always open the circuit breaker to disconnect power to the unit prior to performing any maintenance or service operation.

WARNING - Should the Over Temp light come on, disconnect power to the heater or turn down the thermostat fully

counterclockwise and call a licenced electrician. DO NOT USE HEATER UNTIL PROBLEM IS
DETERMINED AND FIXED.