Ouellet OHV Series User manual

180, 3rd Avenue, L’Islet, Quebec, G0R 2C0, CANADA
Tel.: [phone], Fax: [phone]
www.ouellet.com
INSTALLATION INSTRUCTIONS
“OHV” Series 3 kW to 10 kW
WARNING
When using electrical appliances, basic precautions should
always be followed to reduce the risk of fire, electrical shock
and injury to persons, 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 fire, or damage the heater.
- To prevent a possible fire, do not block air intakes
or exhaust in any manner.
- This heater has hot and arcing or sparking parts inside.
Do not use it in areas where gasoline, paint or flammable
liquids are used or stored.
- Use this heater only as described in this manual. Any
other use not recommended by the manufacturer may
cause fire, electrical shock, or injury to persons.
- 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 fire 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.
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 sufficient strength to support the combined weight of the
heater and mounting bracket. See Table 5.
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.
Table 1 - Minimum Clearances
Heater
kW Discharge Air A Ceiling B Side C Back
0.5 to
5.0 kW Horizontal 3-1/2 in. 89 mm 6 in. 152 mm 6 in. 152 mm
5.1 to
10.0 kW Horizontal 4 in. 102 mm 6 in. 152 mm 6 in. 152 mm
Figure 1 - Minimum Clearances
Figure 2 - Threaded Rod Spacing Dimensions
Horizontal Air Discharge
Table 2 - Threaded Rod Spacing Dimensions
Horizontal Air Discharge
Heater
kW Threaded Rod EFGH
0.5 to
5.0 kW 5/16 - 18 6 1/2 in. 165 mm 4 1/2 in. 115 mm 6 in. 152 mm 7/16 in. 11 mm
5.1 to
10.0 kW 5/16 - 18 12 in. 305 mm 5 in. 127 mm 6 in. 152 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.
Table 3 - Minimum Clearances
Heater
kW Discharge Air A Wall B Wall C Ceiling D Wall
0.5 to
5.0 kW Vertical 6 in. 152 mm 6 in. 152 mm 6 in. 152 mm Width of heater
5.1 to
10.0 kW Vertical 6 in. 152 mm 8 in. 203 mm 10 in. 254 mm Width of heater
Figure 3 - Minimum Clearances

Figure 4 - Threaded Rod Spacing Dimensions
Vertical Air Discharge
Table 4 - Threaded Rod Spacing Dimensions
Vertical Air Discharge
Heater
kW Threaded Rod EFJK
0.5 to
5.0 kW 5/16 - 18 6 1/2 in. 165 mm 4 1/2 in. 115 mm 9 1/2 in. 241 mm 5 in. 126 mm
5.1 to
10.0 kW 5/16 - 18 12 in. 305 mm 5 in. 127 mm 16 in. 406 mm 4 7/8 in. 123 mm
Table 5 - Dimensions and Weight
Heater
kW Height Width Depth Weight
0.5 to
5.0 kW 16 1/2 in. 419 mm 15 3/4 in. 400 mm 9 in. 230 mm 34 lb. 15 kg
5.1 to
10.0 kW 21 3/4 in. 553 mm 19 in. 483 mm 10 1/2 in. 267 mm 61 lb. 28 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 specified 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.
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.
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 (floor 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 satisfied 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.
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 one (1) year period; and their
component parts against defects in material and workmanship
for a one (1) 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 INS151-200803-01
IMPORTANT
Units with Optional Factory Installed Manual Reset
Thermal High Limit only: Located on the back of the
heater, the manual reset thermal high limit is wired in
series with the automatic reset thermal high limit and will
not reset until the heater has cooled and the reset button
has been pushed in.
WIRING (continuation)
Field wiring must be properly sized to carry the amperage
of the heater and all accessories.
The heater has a wiring diagram affixed 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.

180, 3rd Avenue, L’Islet, Quebec, G0R 2C0, CANADA
Tel.: [phone], Fax: [phone]
www.ouellet.com
INSTALLATION INSTRUCTIONS
“OHV” Series 15 kW to 20 kW
WARNING
When using electrical appliances, basic precautions should
always be followed to reduce the risk of fire, electrical shock
and injury to persons, 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 fire, or damage the heater.
- To prevent a possible fire, do not block air intakes
or exhaust in any manner.
- This heater has hot and arcing or sparking parts inside.
Do not use it in areas where gasoline, paint or flammable
liquids are used or stored.
- Use this heater only as described in this manual. Any
other use not recommended by the manufacturer may
cause fire, electrical shock, or injury to persons.
- 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 fire 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 Volt, 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.
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 sufficient strength to support the combined weight
of the heater and mounting bracket. See Table 5.
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.
Table 1 - Minimum Clearances
Heater
kW Discharge Air A Ceiling B Side C Back
10.1 to
20.0 kW Horizontal 6 in. 152 mm 6 in. 152 mm 6 in. 152 mm
Figure 1 - Minimum Clearances
Figure 2 - Threaded Rod Spacing Dimensions
Horizontal Air Discharge
Table 2 - Threaded Rod Spacing Dimensions
Horizontal Air Discharge
Heater
kW Threaded Rod EF G H
10.1 to
20.0 kW 5/16 - 18 6 1/2 in. 165 mm 4 1/2 in. 114 mm 11 5/16 in. 287 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.
Table 3 - Minimum Clearances
Heater
kW Discharge Air A Wall B Wall C Ceiling D Wall
10.1 to
20.0 kW Vertical 10 in. 254 mm 10 in. 254 mm 6 in. 152 mm Width of heater
Figure 3 - Minimum Clearances

Figure 4 - Threaded Rod Spacing Dimensions
Vertical Air Discharge
Table 4 - Threaded Rod Spacing Dimensions
Vertical Air Discharge
Heater
kW Threaded Rod EFJK
10.1 to
20.0 kW 5/16 - 18 12 in. 305 mm 5 in. 127 mm 6 in. 152 mm 4 3/4 in. 121 mm
Table 5 - Dimensions and Weight
Heater
kW Height Width Depth Weight
10.1 to
20.0 kW 21 3/4 in. 553 mm 19 in. 483 mm 16 3/4 in. 413 mm 78 lb. 35 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 specified on
nameplate.
Two knockouts are provided in the back of the heater.
For supply power wiring a multiple 1 3/8 in. to 1 3/4 in.
(35 mm to 44 mm) knockout is provided.
For control wiring a 1/2 in. (13 mm) knockout is provided.
Field wiring must be properly sized to carry the amperage
of the heater and all accessories.
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 in3(1393 cm3) minimum.
HEATER OPERATION
Fan Delay
On a call for heat from either the remote (floor level)
thermostat or the unit mounted thermostat the elements
will be energized.
When the thermostat is satisfied 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.
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 one (1) year period; and
their component parts against defects in material and
workmanship for a one (1) 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 INS238-201001-00
IMPORTANT
Units with Optional Factory Installed Manual Reset
Thermal High Limit only: Located on the back of the
heater, the manual reset thermal high limit is wired in
series with the automatic reset thermal high limit and will
not reset until the heater has cooled and the reset button
has been pushed in.
WIRING (continued)
The heater has a wiring diagram affixed to the inside of
the control compartment access door. Check this diagram
before making any electrical connections.
Branch circuit wiring must be minimum 600 Volt, 60 °C.