Dimplex EUH-B User Manual

Electric Unit Heaters
EUH-B Series

IMPORTANT INSTRUCTIONS

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

1. Read all instructions before using this heater.

2. A heater has hot and arcing or sparking parts inside. Do not use

it in areas where gasoline, paint or ammable liquids are used

or stored.

3. 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 combustible materials,
such as furniture, pillows, bedding, papers, clothes, etc. and cur­tains at least 3 ft. (0.9m) from the front of the heater.

4. Extreme caution is necessary when any heater is used by or
near children or invalids and whenever the unit is left operating

and unattended.

5. Do not operate any heater after it malfunctions. Disconnect

power at the service panel and have the heater inspected by a

reputable electrician before reusing.

6. Do not use outdoors.

7. To disconnect the unit, turn the controls off, and trun off power to

heater circuit at main disconnect panel.

8. Do not insert or allow foreign objects to enter any ventilation or
exhaust opening as this may cause an electric shock or re, or
damage to the heater.

9. To prevent a possible re, do not block air intake or exhaust in
any manner.

10. Do not modify this heater. Use it only as described in this man­ual. Any other use not recommended by the manufacturer may

cause re, electric shock or injury to persons.

SAVE THESE INSTRUCTIONS

Installation Instructions

WARNING: Wiring procedures and connections should be in ac-

cordance with the National Electric code (NEC) 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.

FOR HORIZONTAL OR VERTICAL AIRFLOW

PERMANENT OR SUPPLEMENTARY ELECTRIC FORCED AIR
HEATING FROM THE SAME VERSATILE UNIT

These heavy-duty heaters provide spot heating for hard to heat ar­eas, or they can be used as the primary source of heat for areas not
reached by an existing heating system.

The fan and motor are carefully matched to insure quiet, trouble-free

operation and fan blades are precision balanced before installation.

Heaters in all capacities (3, 5, 7½, 10 or 12kw) have the same di­mensions, and use the same mounting brackets. All components and
controls, including thermostat, transformers, relays, and switches are
enclosed inside the case. Wiring is simple and all heaters can oper-

ate from a single power source.

HEATER LOCATION

Unit heaters should be located along outside walls to provide perim­eter air circulation. The discharge air should wipe the walls without

blowing directly on them. (Figure 1)

• Small rooms - can be heated by one or two units. Locate the unit

Figure 1

EXPOSED OUTSIDE WALL

SMALL ROOM

EXPOSED OUTSIDE WALL

WALL

EXPOSED OUTSIDE

heater(s) to provide circular air movement within the space.

• Large rooms - requiring multiple unit installations. Units should
be located so that the discharge air from one unit supports the
discharge from another unit and provides a circular air movement.

• Remote thermostats - should be located on interior walls or

posts away from heat sources, cold drafts, and away from heater
discharge streams.

LARGE ROOM

MOUNTING UNIT HEATER(S)

CAUTION: Heater must be mounted a minimum of 10 in. (25.4cm)

from walls and 6 ft (183 cm) above oor (8 ft (244 cm) for vertical air
ow) with the discharge parallel to or away from wall.

• MOUNTING BRACKET - The heater is shipped with a mount­ing bracket packed separately in the carton. Secure the bracket
to threaded attachment points on the sides of the heater with
two bolts (provided). Select desired angle of tilt (Horizontal, 15,
30, 45, 60, 75, or Vertical), remove corresponding knockouts on
sides of the heater, then screw the remaining two bolts into the

threaded holes in the bracket so that the bolts pass through the

knockout holes. The unit is now ready for hanging.

• CEILING MOUNTING - Fasten the heater securely to the ceiling

using the center hole in the bracket or the two holes on either side

of the center hole. The Unit mounting bracket may be attached
directly to the ceiling.

• WALL MOUNTING - The heater may also be mounted to a wall
with accessory wall bracket, Part # EUHWB. The wall bracket at-

taches to the center hole of the unit mounting bracket.

WIRING

1. Connect the heater only to the voltage and frequency specied
on the nameplate.

2. All wiring to be in accordance with local and national electric
codes.

3. Remove two screws securing the access door (See Figure 2) and

swing the door down to expose the wiring and control compart­ment.

4. Three knockouts are provided at the back of the heater for power
and control wiring. (See Figure 2)

5. Rough-in branch circuit wiring to the heater using wire rated for

167°F (75°C). Wire heater supply according to diagram attached

to the access door.

7202450001R11

Wiring

!

NOTE: This is a sample wiring diagram for the wiring diagram for your

specic model see the wiring diagram located on the inner panel.

Figure 2

Remove
screw, from

each side

Figure 3

Supply Entry
Knockouts

Operation

WARNING: This heater must be properly installed before it is

used.

CONTROLS (Factory installed)

• Fan delay - The heater is equipped with a fan delay control. The

fan will remain on for a few moments after the elements are de­energized.

• Automatic High Limit - Each heater is equipped with automatic

reset thermal cutouts located above the elements. Should these
safety switches operate, they will automatically reset once the ele­ment reaches a safe operating temperature, however the cause
of the high limit condition should be determined and corrected to
insure satisfactory operation.

• Thermostat - All heaters are equipped with a hydraulic type ther-

mostat which has a nominal operating range of 40°F (5°C) (low) to
100°F (38°C) (high).

OPTIONAL CONTROLS (Field installed)

• Remote line voltage thermostat - An optional remote line vol-

tage thermostat may be used to control the unit. Field connections
may simply be connected to the control terminal block located in
the wiring compartment in accordance with with the wiring dia­gram attached to the access door.

CAUTION: Disconnect the built-in thermostat

• Remote Low voltage thermostat with relay - An optional low

voltage thermostat/relay kit may be used to control the unit (Cata­logue #EUAR11, 120V primary; EUAR21, 208V primary; EUAR31,
240V primary; EUAR41, 277V primary). The relay is installed
through the hole provided in the back left corner of the blower
deck. Power connections are made to the control terminal block
located in the wiring compartment in accordance with the wiring
diagram attached to the access door. A knockout is provided on
the left side of the heater for the 24 volt thermostat control wiring.
It is important that the plastic insulation bushing be installed into
the knockout hole before running low voltage control wiring. The
thermostat is installed and wired in accordance with the instruc-

tions packaged with the kit.

CAUTION: Disconnect the built-in thermostat

• Fan only Switch - An optional “Fan only” switch kit (Catalogue

EUAF2) is available for eld installation in the unit. The fan switch
is mounted in the space provided adjacent to the built-in thermos­tat located at the front of the unit. Field connections are made at
the control terminal block in accordance with the unit wiring dia­gram.

START-UP:

1. Before the unit is energized, the discharge louvers should be be
adjusted for desired air deection. Louvers may be adjusted for
either horizontal or vertical air deection by rotating the louvre
frame. (See gure 3)

2. Check to see that all controls and optional accessories are ope-

rating properly.

Maintenance

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.

1. Under normal conditions, the heater should be cleaned once a

year. DISCONNECT ALL POWER before cleaning or servicing

the heater.

2. All motors are lubricated for extended life operation, and will not

have to be oiled.

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