Dimplex AF12 Series User manual

7203100000R02
Architectural Heaters
AF12/AS12 Series
Installation Instructions
IMPORTANT INSTRUCTIONS
When using electrical appliances, basic precautions should al-
ways be followed to reduce the risk of re, electric shock, and
injury to persons, including the following:
1. Read all instructions before using the heater.
2. The heater is hot when in use. To avoid burns, do not let
bare skin touch hot surfaces. The trim around the heater
outlet becomes hot during heater operation. Keep com-
bustible materials, such as furniture, pillows, bedding, pa-
pers, clothes, and curtains at least 3 ft (0.9 m) from the
front of the unit 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 unit is left
operating and unattended.
4. Do not operate any heater after it malfunctions. Discon-
nect power at the service panel and have the heater in-
spected by a reputable electrician before reusing.
5. Do not use outdoors.
6. To disconnect the unit, turn the controls off, and then
switch off at main power supply panel.
7. Do not locate these heaters below any electrical conven-
ience receptacles.
8. Do not install these heaters against combustible, low
density cellulose bre surfaces.
9. Do not insert or allow foreign objects to enter any venti-
lation or exhaust opening as this may cause an electric
shock or re, or damage to the heater.
10. To prevent a possible re, do not block air intake or ex-
haust in any manner.
11. All electrical heaters have hot and arcing or sparking parts
inside. Do not use in areas where gasoline, paint, or am-
mable liquids are used or stored.
12. Do not modify this heater. Use it only as described in this
manual. Any other use not recommended by the manufac-
turer may cause re, electric shock or injury to persons.
SAVE THESE INSTRUCTIONS
1.5 in
(3.81 cm)
min
1.5 in (3.81 cm)
min
1.5 in (3.81 cm)
min
3 in (7.62 cm)
min
3 in (7.62 cm)
min
3 in (7.62 cm)
min
6 in (15.24 cm)
min
WARNING: Wiring procedures and connections should
be in accordance with the National Electric Code (NEC &
CEC) and local codes.
WARNING: To reduce the risk of re, do not store or use
gasoline or other ammable vapors or liquids in the vicinity of
the heater.
CAUTION: High temperature, risk of re, keep electrical
cords, drapery, furnishings, and other combustibles at least
3 feet (0.9 m) from the front of the heater.
Recommendations for Locating Drapes and Furniture
near Heaters
For most satisfactory operation of the baseboard heaters and
minimum effect on drapes and furniture, the following recom-
mendations should be observed:
1. Hang drapes so that, in use, they extend below the center
line of the heater, but with at least 1.5 inches clearance from
the nished oor covering (such as carpet, if used).
2. Hang drapes so that there is at least 3 inches between the
extreme front of the heater and the nearest fold of the drapes
in the folded back (opened drape) position.
3. Hang drapes so there is at least 1.5 inches between the top
of the drapes and the ceiling.
4. To be suitable for draperies located close to heaters, material
should not discolour nor distort dimensionally (stretch or
shrink) upon extended exposure (1000 hrs.) to a temperature
of 200º F (93º C).
!NOTE: If drapes are to be cut off above a heater, they
should be cut off at least 6 inches above the top of the
heater and preferably more.
!NOTE: Place furniture no closer then 3 inches from the
baseboard heater.
Wall Installation
1. Unpack the heater from the carton and remove the front
panel and terminal box covers.
!NOTE: The front panel screws are recessed in the
bottom louvers at each end of the heater.
2. Determine the correct mounting height and scribe or snap
a level line on the wall to maintain each heater back plate
in a horizontal alignment, when mounting.
!NOTE: Bottom air inlet heaters are to be mounted a
minimum of 3” from the bottom of the heater to the n-
ished oor.
3. Remove the desired knockouts from the terminal box area.
(See Figure 1)
!NOTE: It is only necessary to remove the knockout(s)
that will feed the power supply wiring, keeping in mind the
heater mounting location and supply wire location on the
wall.
4. Mount the back plate to the wall using suitable fasteners

HEATER LVC RELAY - 1 PH PARALLEL
L3
7106222500
L3
L2
L1
7106223000
HEATER NO CONTROLS - 3 PH DELTA
L1 ELEMENT L2
ELEMENT
HEATER 3 POLE CONTACTOR/TX - 3 PH DELTA
ELEMENT
HEATER 2 POLE STAT - 1 PH PARALLEL
L2
7106222200
L2
L2
L1
HEATER NO CONTROLS - 1 PH PARALLEL
ELEMENT
L1
L1
7106222700
L2
L1
ELEMENT
ELEMENT
7106224000
7106223500
L3
L1
HEATER 3 POLE CONTACTOR - 3 PH DELTA
L2
7106223700
7106223200
HEATER LVD RELAY - 1 PH PARALLEL
A
B
STAT
L1
L2
T1
T2
T2
T1
L1 L2
ELEMENT
AT2
T1
C
L1
L2
L3
T1
ELEMENT
T2
24V
24V
CONTACTOR
STAT
L3
L2
L1
L1 L2 L3
LIMIT CONTROL
RETURN WIRES
RELAY
LIMIT CONTROL
RETURN WIRES
RETURN WIRES
RETURN WIRES
LIMIT CONTROL
LIMIT CONTROL
RELAY
LIMIT CONTROL
LIMIT CONTROL
RETURN WIRES
RETURN WIRES
LIMIT CONTROL
LIMIT CONTROL
RETURN WIRES
RETURN WIRES
CONTACTOR
C
HEATER c/w 2 or 3 POLE STAT - 3 PH DELTA
www.dimplex.com2
Wiring Diagrams
(provided by the customer) using the
scribed line on the wall to keep the
heater level.
!NOTE: Should the wall surface be
uneven, secure the heater back panel to
the high spots. This will avoid a distorted
appearance.
5. Proceed to the wiring instructions.
Floor Installation
1. Unpack the heater and pedestal(s)
from the carton( the pedestals are
packed at the end of the carton) .
2. Remove the front panel and terminal
box covers.
!NOTE: The front panel screws are re-
cessed in the
bottom louvers at each end of the
heater.
3. Remove the desired knockouts from
the terminal box area.
!NOTE: It is only necessary to remove
the knockout(s)
that will feed the power supply wiring,
keeping in mind the heater mounting
location and supply wire location on
the wall.
4. Temporarily secure a pedestal to each
end of the heater bottom.
!NOTE: Units longer than 4 feet will be
provided with 3 or more pedestals. The
extra pedestals should be used to support
the middle of the heater.
5. Place the heater in the desired location
and mark the position of the pedestal
base on the oor.
6. Remove the pedestal base(s) from the heater and secure
to the oor within the marked areas with suitable fasteners.
(provided by the customer)
7. Place the heater on the pedestal base and tighten all fas-
teners.
8. Proceed to wiring instructions.
Wiring Instructions
Recommended minimum supply wire sizes are listed in the
table below:
MAXIMUM WATTS PER CIRCUIT USING 75 °C WIRE
(COPPER WIRE)
Rough in
Wire Size 120V 208V 240V 277V 347V 480V 600V
14 1440 2496 2880 3324 4164 5760 7200
12 1920 3328 3840 4432 5552 7680 9600
10 2880 4992 5760 6648 8328 11520 14400
1. Run branch circuit wiring of proper voltage and wire size to
the location of the terminal box of the heater. (See Chart)
!NOTE: Supply wire entry is commonly made into one
heater. Through wiring (factory furnished) can be used for
connection to adjacent heaters.
2. Wire all heaters and controls in accordance with the ap-
propriate wiring diagram.
!NOTE: Sample wiring diagrams beside.
Figure 1

In keeping with our policy of continuous product improvement, we reserve the right to make changes without notice.
© 2015 Dimplex North America Limited
1367 Industrial Road Cambridge ON Canada N1R 7G8
1-888-346-7539 www.dimplex.com
Warranty
The Manufacturer warrants the heating elements and components of
the enclosed product against any defect in material or workmanship
for a period of one year from the date of purchase, with the exception
of the elements which are warranted to be free from defect in mate-
rial and workmanship for ten years. In full satisfaction of any claims
under this Warranty the Manufacturer will repair or replace without
charge, in its factory or in the eld as it alone may decide, any parts
which in its opinion are defective.
The Manufacturer shall not be responsible for any transportation or
shipping costs in relation to such repair or replacement except as
specically assumed by it. Misuse of this product or repairs by per-
sons other than the Manufacturer’s authorized personnel without the
Manufacturer’s written approval, will void this Warranty.
This Warranty is in lieu of all other warranties or conditions whether
expressed or implied including but not limited to those of merchan-
tability or tness for purpose and shall constitute the sole remedy of
the Purchaser and the sole liability of the Manufacturer in respect of
the sale of the product, whether in the nature of breach or breach of
fundamental term, or of negligence or otherwise.
The Manufacturer shall not be liable for any special, indirect or
consequential damages or for any damages resulting from remo-
val or replacement of a heater subject to warranty claim without the
Manufacturer’s authorization. This Warranty is transferable by the
original consumer purchaser of the product. Any claims under this
Warranty must be submitted in writing to the Service Manager, Dim-
plex North America Ltd., 1367 Industrial Rd., Cambridge, Ontario
N1R 7G8, Canada.
3. Wrap the supply ground wire around the green painted
ground screw & tighten.
!NOTE: When heaters are mounted end to end, remove
the nished end plate, install a chase nipple and locknut in
the terminal box to ensure grounding continuity and to pro-
tect the wiring. Where headers are spaced apart, remove
the nishing end plate, and use rigid conduit (provided by
customer) for through wiring and ground continuity. Do not
exceed the allowable number of conductors allowed by the
National Electric Code.
4. Do a nal and complete check of all wiring then replace the
terminal box covers being careful not to pinch any wires.
5. The front panel may now be installed.
Terminal Box Volumes in Cubic Inches
Heater Style Left Hand Box 4”
Wide
Right Hand Box 5”
Wide
AF12, AS12 146.25 182.75
WARNING: TO PREVENT THE RISK OF FIRE, DO NOT
OPERATE THE HEATER WITHOUT THE FRONT PAN-
ELS IN PLACE.
• Place the front panel over the ange of the bottom panel.
• Hook the top back edge of the front panel over the top
panel, and secure with screws.
CAUTION: Before removing the front cover for cleaning,
make certain the power has been turned off at the circuit
breaker panel.
CAUTION: Allow adequate time for the element and body
casing to cool before attempting to work on the heater.
The AF12/AS12 series contain no moving parts. Since the
appliance contains no moving parts, little maintenance is
required beyond vacuum cleaning. It is, however, essential
that the heater is not operated with an accumulation of dust
or dirt on the element, as this can cause a build up of heat
and eventual damage. For this reason the heater must be
inspected regularly, depending upon conditions and at least at
yearly intervals. Once cleaning is complete replace the front
cover and restore power.
WARNING: The user can perform cleaning ONLY, all
other servicing should be performed by qualied service
personnel.
Maintenance
1. This heater must be properly installed before it is used.
2. Prior to energization remove all construction dirt (plaster,
sawdust, etc.) from interior and exterior of heater.
Dimplex baseboard heaters are designed and tested for safe
and trouble-free operation. All Dimplex baseboard heaters
are protected against overheating by a built-in thermal cutout.
Free airow throughout the heater is extremely important for
the most efcient operation of the heater. Restricted airow
may cause the thermal overload protector to cycle the heater
“ON and OFF”. A cycling heater will not supply sufcient heat
to the room.
Avoid direct contact of paper, fabric, or furniture with heater.
Operation