Qmark EFQ Series - Commercial Fan-Forced Wall Heaters - Manual (Page 3)

• Supply may enter heater back box from wall through back
knockout or through top knockout when surface type con-
duit is provided. When surface conduit system is used, the
“U” shaped knockout in the surface frame must be removed
to allow clearance over conduit.
a. Remove the disconnect switch bracket from back box by
removing the two screws.
b. Remove desired knockout in rear or top of back box and run
supply cable to heater location and into upper right corner of
back box, leaving at least 6” of wire inside box for connection.
Cable arrangement must be in accordance with the National
and Local Electric Codes and cable must be properly protect-
ed by use of appropriate cable clamp or conduit fittings.
c. Referring to the appropriate wiring diagram make the follow-
ing connections:
1. Connect the supply ground conductor to the back box by
attaching to the grounding lug marked “Ground.”
2. Connect each supply power lead wire to one of the blue
lead wires from the disconnect switch using wire nuts or
approved wire connectors.
3. If black leads from disconnect switch are not already
attached to terminal block attach as shown in the wiring
diagram. Check to make sure connections are tight.
4. Secure disconnect switch and bracket to back box with the
screws removed earlier.
3. Carefully fit surface frame over back box making sure back
edges of frame are flush with finished wall. See fig. 3. Secure
frame in place with two screws as shown.
Installation of Heater Assembly and Grille
After back box is completely installed and no further construction
dirt is expected, clean debris from back box. Heater fan panels
were shipped mounted to back box and were removed to mount
back box.
1. Insert the heater assemblies (fan panels) into back box, plac-
ing the four mounting holes (with key-hole slots) over the
screws in the back box. Tighten all screws securely.
2. If surface-mounting frame is used, ensure that the
frame is even with all four heater assembly tabs before
tightening screws.
3. Connect the two disconnected black switch wires to the
heater terminal block (see wiring diagram). Connect red, blue
and black wires from both fan panels to heater terminal
block (see
wiring diagram). Check that all wiring connec-
tions are tight.
4. Turn thermostat(s) to the extreme counterclockwise position.
5. Turn disconnect switch “ON”.
6. Mount the grille using the six (6) long screws provided.
The screws thread into holes located in the flanges of the
back box.
Operation
NOTE: The operation instructions apply to 208, 240 and 277V
heaters with one thermostat. Units operating at 347V, 480V and
600V have two thermostats.
3-13/16" (97mm)
HANG FRAME
ON BACK BOX
MOUNT BACK
BOX TO WALL
USING REAR
MOUNTING
BRACKETS
23-7/64" (585mm)
32-7/32" (818mm)
Fig. 3: Surface Mounting Installation
3
L2F L1 L2E
BLACK
RED BLUE
BLACK RED BLUE
BLACK
L2F
R
E
D
L
2
BLUE
L2E/B BLACK
L2F
RED
L
1
BLUE
L2E/A
L2F L1 L2E
Left fan panel
assembly Right fan panel
assembly
Right fan panel
assembly
To
Disconnect
Switch
Assembly
L2F
L1
L2E/A
L2E/B
L2F L1 L2E
BLACK
RED BLUE
BLACK RED BLUE
L2F
BLACK
L2
RED L2E/B BLUE
BLACK
L2F
RED
L
1
BLUE
L2E/A
L2F L1 L2E
Left fan panel
assembly
To
Disconnect
Switch
Assembly
L2F
L1
L2E/A
L2E/B
Thermostat
Wiring diagram for
fan panels used on
208V, 240V, 277V
Q Series
Q6008
Q6004
Q6007
Q8008
Q8004
Q6007
Wiring diagram
for fan panels
used on 347V,
480V, 600V
Q Series
Q6003
Q60048
Q6006
Q8003
Q80048
Q8006
Typical Fan Panel Assembly
Typical Fan
Panel Assembly
Terminal Block
Terminal Block