Qmark Mechanical Artisan User Manual
MCARWH Series
Mechanical Artisan
Heavy-Duty Architectural
Wall Heater
Installation, Operation & Maintenance Instructions
Table 1. Specifications
MIN. SUPPLY
MODEL VOLTS PHASE WATTS AMPS WIRE GAUGE
MCARWH1802 120 1 1800 15 12
MCARWH4808 208 1 4000 / 2000 19.2 / 9.6 10
MCARWH4804 240 1 4800 / 2400 20.0 / 10.0 10
MCARWH4807 277 1 4800 / 2400 17.3 / 8.7 12
NOTE: The model numbers shown are Northern White color. Add suffix to the model number for the following colors:
AL = Aluminum, BZ = Bronze, W = Navajo White.
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, etc. and
curtains 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 reputable 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. Should the sensor register an overheat condition,
the heater will stop generating heat, the fan will turn off, and
the red alarm light will turn ON. DO NOT OPERATE THE
HEATER WITH THE ALARM LIGHT ILLUMINATED. See
“TO RESET MANUAL RESET LIMIT” in OPERATING
INSTRUCTION section.
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 39696 4/14 5200-11204-000
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 back box.
9. Do not use this heater for dry out purposes as the paint,
plaster, sawdust and drywall sanding dust will permanently
damage the heater and must be kept out of the heater.
10. Remove motor shipping bracket and yellow tag prior to operating this 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.
Ground screw
Back Box
12” Min.
(305 mm)
Figure 1: Locating Back Box in New Construction
Cable
clamp
Power supply cable
Lead wires (Blue)
12” Min.
(305 mm)
Nail or screw
(2 each side)
Disconnect switch
bracket with switch and
leads
(No disconnect
switch on
208V models)
Mounting Clearances
TO PROVIDE FOR SAFE OPERATION, THE FOLLOWING
CLEARANCES MUST BE MAINTAINED.
Wall Mounting Only:
a. Minimum twelve (12) inches (305 mm) to floor;
b. Minimum twelve (12) inches (305 mm) to adjacent walls;
c. Minimum thirty six (36) inches (915 mm) to ceiling.
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.
Installation of Back Box in New Construction
(See Figure 1).
NOTE: If the finished wall surface is already up, follow instruc-
tions 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” (407 mm) 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" (12.7 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 disconnect 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.
2
GND
TO
DISCONNECT
SWITCH
L1
L2
PL
F.D
THERMOSTAT
L1
OFF
L2
CYC
MOTOR
MOTOR
E1
E2
JUMPER
BLK
MANUAL RESET
LIMIT
EOL
ELEMENTS
MOTOR
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 disconnect 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 pigtail lead located in the inside top of the back box
and secure second green pigtail lead to back box green pigtail.
9. Feed remaining 2 wires from disconnect switch through hole
in switch bracket and secure disconnect switch bracket in
place by tightening screws.
10. Secure disconnect switch bracket in place by tightening
screws.
POWER SUPPLY VOLTAGE MUST BE THE SAME AS
HEATER VOLTAGE RATING SHOWN ON HEATER NAMEPLATE. CONNECTING TO A VOLTAGE IN EXCESS OF
Figure 3: Wiring Diagram
NAMEPLATE RATING WILL DAMAGE HEATER AND VOID
WARRANTY.
ALL CONNECTIONS MUST BE MADE WITH APPROPRIATELY
SIZED LISTED WIRE CONNECTORS.
Installation of Recessed Back Box in
Existing Construction
1. Provide a wall opening 14-3/4" (375 mm) wide by 18-1/2"
(470 mm) high at the desired mounting height, but no closer
than 12" (305 mm) from floor. (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 disconnect switch bracket by loosening two screws
on the right side.
12” Min.
(305 mm)
Figure 2: Locating Back Box in Existing Construction
14 1/2” Min.
(362 mm)
12” Min.
(305 mm)
Back Box
Ground
screw
Cable
clamp
Power supply cable
Lead wires (Blue)
Disconnect switch
bracket with switch
and leads. (No disconnect switch on 208V
models)
Nail or screw
(2 each 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 disconnect switch to the supply wire leads using wire connectors (see Figure 4, 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.
9. Feed remaining 2 wires from disconnect switch through hole
in switch bracket and secure disconnect 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.
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