HOSS Series (Rev B)
Smart Series
Large Wall Heater
Installation, Operation & Maintenance Instructions
READ CAREFULLY - This manual provides instructions for the correct installation, safe use, and care of this product. Special atten-
tion should be directed to the warnings provided below which identify certain precautions and special instructions for safe and efficient installation and use. Studying these instructions first may save you considerable time and money later and keep your installation time to a minimum. If you are not familiar with electricity or feel uncomfortable in working with electricity, refer the installation of
this product to a licensed electrician or qualified person.
Table 1. Specifications
MIN. SUPPLY
MODEL VOLTS PHASE WATTS AMPS WIRE GAUGE
HOSS4008 208 1 1800-4000 19.2 10
HOSS4004 240 1 1800-4000 16.7 10
HOSS4007 277 1 1800-4000 14.4 12
IMPORTANT INSTRUCTIONS
WARNING
WHEN USING ELECTRIC APPLIANCES, BASIC PRECAUTIONS SHOULD ALWAYS BE FOLLOWED TO REDUCE THE
RISK OF FIRE, ELECTRIC SHOCK, AND INJURY TO PERSONS, INCLUDING THE FOLLOWING:
1. Read all instructions before installing or using this heater.
2. This heater is hot when in use. To avoid burns, do not let
bare skin touch hot surfaces. Keep combustible materials,
such as furniture, pillows, bedding, papers, clothes, curtains, etc. at least 3 feet (0.9 m) from the front of the heater.
3. Extreme caution is necessary when any heater is used by or
near children or invalids and whenever the heater is left
operating and unattended.
4. Do not operate any heater after it malfunctions. Disconnect
power at service panel and have heater inspected by a qualified electrician before using.
5. Do not use outdoors.
6. To disconnect heater, turn controls to OFF, and turn OFF
power to heater circuit at main disconnect panel.
7. Do not insert or allow foreign objects to enter any ventilation
or exhaust opening as this may cause an electric shock, fire,
or damage to the heater.
8. To prevent a possible fire, do not block air intake or exhaust
in any manner.
!
9. A 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.
10. Use this heater only as described in this manual. Any other
use not recommended by the manufacturer may cause fire,
electric shock, or injury to persons.
11. This heater is provided with a red alarm light that will illuminate ONLY if the heater has turned off as a result of overheating. If you see the light on, immediately turn the heater
OFF and inspect for any objects on or adjacent to the heater
that may have blocked the airflow or otherwise caused high
temperatures to have occurred. DO NOT OPERATE THE
HEATER WITH THE ALARM LIGHT ILLUMINATING.
12. This heater is intended for comfort heating applications and
not intended for use in special environments. Do not use in
damp or wet locations such as marine or greenhouse or in
areas where corrosive or chemical agents are present.
13. When installing, see INSTALLATION INSTRUCTIONS for
additional warnings and precautions.
14. For safe and efficient operation, and to extend the life of your
heater, keep your heater clean - See MAINTENANCE
INSTRUCTIONS.
SAVE THESE INSTRUCTIONS
PPD 35950 06/12 5200-11092-000
INSTALLATION
INSTRUCTIONS
To prevent a possible fire, injury to persons or damage to the
heater, adhere to the following:
1. Disconnect all power coming to heater at main service
panel before wiring or servicing.
2. All wiring procedures and connections must be in accordance with the National and Local Codes having jurisdiction
and the heater must be grounded.
3. Verify the power supply voltage coming to heater matches
the ratings as shown on the heater nameplate.
CAUTION: ENERGIZING HEATER AT A VOLTAGE GREATER
THAN THE VOLTAGE PRINTED ON THE NAMEPLATE WILL
DAMAGE THE HEATER AND VOID THE WARRANTY AND
COULD CAUSE A FIRE.
4. CAUTION - High temperature, risk of fire, keep electrical
cords, drapery, furnishings, and other combustibles at least
3 feet (0.9 m) from front of heater. Do not install heater
behind doors, below towel racks, or in an area where it is
subject to being blocked by furniture, curtains or storage
materials. Hot air from the heater may damage certain fabrics and plastics.
5. To reduce the risk of fire, do not store or use gasoline or
other flammable vapors and liquids in the vicinity of the
heater.
6. For wall mounting only with air discharge downward. Do
NOT install in floor, ceiling, upside down (air discharge
upward), or sideways.
7. The following minimum clearances must be maintained:
Bottom of heater to floor - 12” (305 mm).
Sides of heater to adjacent wall - 12” (305 mm).
Top of heater to ceiling - 36” (915 mm).
8. Do not operate the heater without the grille installed.
9. Do not use this heater for dry out as the paint, plaster, sawdust and drywall sanding dust will permanently damage the
heater and must be kept out of the heater.
The heater is designed for recessed installation in 2” x 4”
(50 mm x 101 mm) studs or larger wall sections using the back
box provided. The heater may be wired with standard building
wire (60°C). Refer to “Specifications” and heater nameplate for
correct supply voltage and wire size.
NOTE: The optimum mounting height for this heater is 18” to 24”
(450 mm to 600 mm) from floor to bottom of back box. DO NOT
install closer than 12” (305 mm) from the floor.
Installation of Back Box in New Construction
TO PREVENT HAZARD OF FIRE OR ELECTRICAL SHOCK,
DO NOT INSTALL WITHOUT BACK BOX.
TO PREVENT POSSIBLE DAMAGE TO POWER WIRING,
USE ONLY THE KNOCKOUTS PROVIDED IN BACK BOX
WITH LISTED CABLE CLAMP OR BUSHING.
Ground screw
Back Box
12” Min.
(305 mm)
Figure 1 - Locating Back Box in New Construction
NOTE: If the finished wall surface is already up, follow instructions for “Installation of Back Box in Existing Construction”.
1. Place the back box between two 16" (406 mm) center-tocenter wall studs at the desired mounting height but no
closer than 12" (305 mm) to adjacent wall or floor.
NOTE: If wall studs are spaced greater than 16” on center,
additional framing supports may be necessary.
2. Align back box such that the bottom and sides will be flush
with finished wall surface (top flange of back box should
protrude approximately 1/2" (13 mm) from finished wall
surface (You must know the thickness of the finished wall
when installing).
3. Secure the back box in position with wood screws or nails as
shown in Figure 1.
4. Run a power supply cable into the knockout area in the upper
right hand corner of the back box (see Figure 1). All wiring
must be in accordance with National and Local Electrical
Codes. Refer to Specifications for correct wire size.
5. Remove ON/OFF switch bracket by loosening two screws on
the right side.
6. Install a cable clamp in the knockout in the top of the back
box.
7. Insert power supply cable through cable clamp, allowing at
least 6" (152 mm) of leads to extend inside the back box.
Connect the blue lead wires of ON/OFF switch to the supply
wire leads using wire connectors (see Figure 3, Wiring
Diagram).
NOTE: If power supply is provided by standard non-metallic
sheathed cable (Romex) and the supply voltage is 240 or 208
volts (two power wires), the white wire color must be changed
using black electrical tape to comply with the NEC. White is only
allowed for a Neutral conductor.
8. Connect building ground conductor to the back box using the
green screw located in the inside top of the back box.
9. Secure ON/OFF switch bracket in place by tightening screws.
2
Cable
clamp
Power supply cable
Lead wires (Blue)
ON/OFF switch bracket
with switch and leads
12” Min.
(305 mm)
Nail or screw
(2 each side)
Installation of Back Box in
CONTROL BOARD
ON/OFF SWITCH
RED JUMPER WIRE FOR
BUILDING MANAGEMENT
SYSTEM CONNECTION
THERMISTOR
*BLACK AND *BLUE LEAD WIRES ARE
IDENTIFIED WITH WHITE TAPE AT EACH
STRIPPED END TO INDICATE THAT THE
NEUTRAL FOR THE 277V MODELS ARE
TO BE CONNECTED TO THESE LEADS.
MOTOR
MOTOR LEAD
MOTOR LEAD
MANUAL
RESET
RED
BLACK
BLACK
RED
BLUE
GREEN
*BLUE
BLACK
*BLACK
L2/N
L1
L2/N
L1
L2/N
L1
G
GG
LIGHT
ELEMENT
YELLOW
BLUE
BLACK
VDR1
S1
S2
B
W6
E1
E2
E3
W4
A
FAN-N
FAN-A
W6W5
Transformer
RED
DATA CABLE
Field Connections
Existing Construction
1. Provide a wall opening 14-1/2" (362 mm) wide by 18-1/2"
(470 mm) high at the desired mounting height, but no closer
than 12" (305 mm) from floor or adjacent wall. (See Figure 2.)
Locate so at least one side of opening is at wall stud.
2. Run a power supply cable into the knockout area in the upper
right hand corner of the wall opening (see Figure 2). All
wiring must be in accordance with National and Local
Electrical Codes. Refer to Specifications for correct wire size.
3. Remove ON/OFF switch bracket by loosening two screws on
the right side.
4. Install a cable clamp in the knockout in the top of the back
box.
5. Insert power supply cable through cable clamp, allowing at
least 6" (152 mm) of leads to extend inside the back box.
Connect the blue lead wires of ON/OFF switch to the supply
wire leads using wire connectors (see Figure 3, Wiring
Diagram).
NOTE: If power supply is provided by standard non-metallic
sheathed cable (Romex) and the supply voltage is 240 or 208
volts (two power wires), the white wire color must be changed
using black electrical tape to comply with the NEC. White is only
allowed for a Neutral conductor.
6. Connect building ground conductor to the back box using the
green screw located in the inside top of the back box.
7. Secure ON/OFF switch bracket in place by tightening
screws.
8. Insert back box in wall opening being careful not to damage
the supply wiring. Secure the back box in place with wood
screws or nails.
Installation of Heater Assembly
Carefully position the heater assembly, with fan on top, and element on bottom into the back box (see Figure 4).
NOTE: The heater assembly must be carefully positioned to
ensure the wires and wire connector are not trapped between
the heater assembly and the back box.
Once the heater assembly is positioned correctly in the back
box, fasten securely using the four screws provided, one in each
corner (see Figure 4).
12” Min.
(305 mm)
Figure 2 - Locating Back Box in Existing Construction
14 1/2” Min.
(362 mm)
12” Min.
(305 mm)
Ground
screw
Back Box
Cable
clamp
Power supply cable
Lead wires (Blue)
ON/OFF switch
bracket with switch
and leads
Nail or screw
(2 each side)
Figure 4 - Installation of Heater Assembly
Mounting Screw
Locations
Mounting Screw
Locations
Figure 3 - Wiring Diagram
3