Ouellet OHV User Manual

180, 3rd Avenue, L’Islet, Quebec, G0R 2C0, CANADA

Tel.: [phone], Fax: [phone]

www.ouellet.com

INSTALLATION INSTRUCTIONS

“OHV” Series 2 kW to 10 kW

CAUTION

To prevent possible overheating - or damage due
to overheating - keep at least 5 ft. (1524 mm) clearance
in front of heater.

See Tables 1 & 3 for side, ceiling and back minimum
mounting clearances.

Wall / Ceiling structures and anchoring provisions must be
of suffi cient strength to support the combined weight of the
heater and mounting bracket. See Table 5.

Figure 2 - Threaded Rod Spacing Dimensions

Horizontal Air Discharge

WARNING

When using electrical appliances, basic precautions should

always be taken to reduce the risk of fi re, electrical shock

and injury, including the following:

Read all instructions before using this heater.

- This heater is hot when in use. To avoid burns, do not let
bare skin touch hot surfaces. Keep combustible materials
at least 5 ft. (1524 mm) from the front of the heater and
keep them away from the sides and rear.

- Do not use outdoors.

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

- To prevent a possible fi re, do not block air intakes
or exhaust in any way whatsoever.

- A heater has hot and arcing or sparking parts inside.
Do not use it in areas where gasoline, paint or fl ammable
liquids are used or stored.

- Use this heater only as described in this manual. Any
other use not recommended by the manufacturer may
cause fi re, electrical shock, or injury.

- This heater is not approved for use in corrosive
atmospheres, wet or very humid locations such
as marine, green house or chemical storage areas.

To reduce the risk of fi re or electrical shock:

- All wiring must be in accordance with National and
Local Electrical Codes.

- Heater must be grounded as a precaution against possible
shock.

- To avoid possible electrical shock, disconnect all power
at the main panel prior to wiring, cleaning or servicing.

- Verify the power supply voltage coming to the heater
matches the heater nameplate rating (on back of heater)
before energizing heater.

- Use minimum 600 Volts, 60 °C wire only.

- When installed, heater must be electrically grounded
in accordance with the National Electrical Code.

- See Figures 1 & 3 and Tables 1 & 3 for minimum
mounting clearances.

LOCATE HEATERS PROPERLY

Heaters may be mounted for either horizontal or vertical
heated air discharge.

Note: Install accessories in accordance with their
installation instructions prior to mounting heater.

HEATER INSTALLATION

Horizontal Air Discharge Mounting

The factory supplied wall / ceiling brackets may be used
or threaded rod (not supplied) may be used.
See Figure 2 and Table 2 for threaded rod size and spacing.

Figure 1 - Minimum Clearances

Table 1 - Minimum Clearances

Heater kWDischarge

0.5 to

5.0 kW

5.1 to

10.0 kW

Air

Horizontal

Horizontal

A

Ceiling

3-1/2 in.

89 mm

4 in.

102 mm

B

Side
6 in.

152 mm

6 in.

152 mm

C

Back

6 in.

152 mm

6 in.

152 mm

Table 2 - Threaded Rod Spacing Dimensions

Horizontal Air Discharge

Heater kWThreaded

0.5 to

5.0 kW

5.1 to

10.0 kW

Rod

3/8 - 16

3/8 - 16

EFGH

6 1/2 in.
165 mm

12 in.

305 mm

4 1/2 in.
115 mm

5 in.

127 mm

6 in.

152 mm

6 in.

152 mm

7/16 in.

11 mm

7/16 in.

11 mm

Vertical Air Discharge Mounting

Threaded rod (not supplied) must be used.
See Figure 4 and Table 4 for threaded rod size and spacing.

If heater is mounted with control compartment toward wall
insure that heater is mounted with enough clearance to the
wall (minimum = width of heater) to allow the control
compartment access door to open.

Figure 3 - Minimum Clearances

Table 3 - Minimum Clearances

Heater kWDischarge

0.5 to

5.0 kW

5.1 to

10.0 kW

Air

Vertical

Vertical

A

Wall
6 in.

152 mm

6 in.

152 mm

B

WallCCeilingDWall
6 in.

152 mm

8 in.

203 mm

6 in.

152 mm

10 in.

254 mm

Width of

Width of

heater

heater

Figure 4 - Threaded Rod Spacing Dimensions

Vertical Air Discharge

Table 4 - Threaded Rod Spacing Dimensions

Vertical Air Discharge

Heater kWThreaded

0.5 to

5.0 kW

5.1 to

10.0 kW

Rod

3/8 - 16

3/8 - 16

EFJK

6 1/2 in.
165 mm

12 in.

305 mm

4 1/2 in.
115 mm

5 in.

127 mm

9 1/2 in.
241 mm

16 in.

406 mm

5 in.

126 mm
4 7/8 in.

123 mm

WIRING

(continuation)

Field wiring must be properly sized to carry the amperage
of the heater and all accessories.

The heater has a wiring diagram affi xed to the inside of
the control compartment access door. Check this diagram
before making any electrical connections.

Branch circuit wiring must be minimum 600 Volts, 60 °C.

Relay with Transformer (RT) – Low voltage thermostat
wiring.

RT is located on back wall of heater control compartment.

- Remove wiring separator.

- Remove knockout from heater back.

- Wire remote thermostat to RT.

- Replace wiring separator and tighten pipe nipple nut.

Wiring compartment volume: 85 in.3 (1393 cm3) minimum.

SERVICE

The heater motor is permanently lubricated.
Occasional cleaning of the inlet grille will prevent

clogging. Use a vacuum with a brush attachment.

WARRANTY

OUELLET CANADA INC. warrants the electric heating
element of the OHV series for a fi ve (5) year period; and their
component parts against defects in material and workmanship
for a fi ve (5) year period following the date of purchase,
under normal use and service, when proof of purchase of
such is provided to the manufacturer. The obligation of
Ouellet Canada Inc., under the terms of this warranty, will
be to supply a new unit and this omits the manufacturer to
bear the installation costs or other secondary charges linked
to replacing the unit or the component part(s).

KEEP THIS INSTRUCTION PAMPHLET

FOR THE USER INS151-200803-06

Table 5 - Dimensions and Weight

Heater

kW

0.5 to

5.0 kW

5.1 to

10.0 kW

Height Width Depth Weight

16 1/2 in.

419 mm

24 1/2 in.

622 mm

15 3/4 in.

400 mm

22 in.

559 mm

9 in.

229 mm

10 7/8 in.

276 mm

40 lb

18 kg

67 lb

30 kg

WIRING

All wiring must be in accordance with National and Local
Electrical Codes.

The heater must be grounded as a precaution against
possible shock.

Insure power source is deenergized before wiring heater.
Check nameplate on back of heater.
Connect heater only to voltage and phase specifi ed on

nameplate.
Two knockouts are provided in the back of the heater:

- For supply power wiring a multiple 1/2 in. to 3/4 in.
(13 mm to 19 mm) knockout for OHV 5 kW and less
and a multiple 1 3/8 in. to 1 3/4 in. (35 mm to 44 mm)
knockout for OHV 7.5 kW and more.

- For control wiring a 1/2 in. (13 mm) knockout.

HEATER OPERATION

Fan Delay

OHV unit heaters (5 kW and less) are designed with a fan
delay that allows the elements to heat-up before the fan
turns on, reducing the “cold blast” effect normally felt with
non-fan delayed heaters.

On a call for heat from either the remote (fl oor level)
thermostat or the unit mounted thermostat the elements
will be energized.

After the elements get warm, a short period of time, the fan
will come on (5 kW and less).

When the thermostat is satisfi ed the elements will
be deenergized.

The fan will continue to run until the residual heat is
removed from the heater. Then the fan will stop.

Automatic Reset Thermal High Limit

OHV heaters have an automatic reset thermal high limit
that will deenergize the heating elements if the interior
temperatures of heater exceed its setting. The limit will
automatically reset when the heater interior temperatures
fall below its setting.