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

3. If the thermostat is controlling more than one heater, the total
of all heater amperage ratings (Table 1) cannot exceed 25
amps at 120 volts AC thru 240 volts AC. Refer to Table
2 for correct wire, circuit breaker, or fuse sizing.
4. Connect one red and one black thermostat lead to power
wiring per wiring diagram (Fig. 6) using properly sized listed
wirenuts (provided).
5. Fold wires back into wiring compartment behind thermostat
to clear fan deck.
TO INSTALL FAN DECK ASSEMBLY
NOTE: Fan deck assembly should not be installed until after the
drywall phase of construction is complete. Dust from drywall
installation and joint compound can be harmful if it gets inside fan
deck components.
1. Locate fan deck and mounting rails in top of back box.
2. Insert flanges on fan deck into mounting rails and slide back
until fan deck stops (see Fig. 7).
3. Make wiring connections, attaching one red and one black
thermostat lead to two (2) black heater leads for 240V or to
black and white heater leads for 120V with wirenuts
(provided). Connect field ground lead to bare ground wire
with wirenut (provided). See Fig. 6.
4. Remove 1/2” knockout from grille and install grille using two
oval head screws. Push thermostat knob on thermostat
shaft.
5. Reconnect power at main fuse or circuit breaker distribution
panel.
3
Figure 6
TABLE 2
TOTAL AMPS
0 thru 12
12.1 thru 16
16.1 thru 24
WIRE SIZE
(COPPER)
#14
#12
#10
CIRCUIT BREAKER
OR FUSE SIZE
15 Amps
20 Amps
30 Amps
TO CHANGE WATTAGE OUTPUT
The chart shows the wattages available by model. Each heater
is factory wired for its maximum wattage. The last two columns
in the chart refer to the jumpers on the CLIP ‘n’ Fit
® Board. To
change wattage, clip out Jumper 1 and/or Jumper 2 as shown in
the chart below. Completely remove jumpers by clipping at both
ends as close to the board as possible.
Figure 5
TOP OF BACK BOX
FLANGE ON FAN DECK
MOUNTING RAIL
Figure 7
WATTAGE
JUMPER
1
JUMPER
2
2400
1800
1200
600
1800
1350
900
450
2000
1500
1000
500
1500
1125
750
375
1500
1125
750
375
Red
Jumper
Leave in
Leave in
Clip out
Clip out
Blue
Jumper
Leave in
Clip out
Leave in
Clip out
R2404 &
R2404T2
@240V @208V
R2004 &
R2004T2
@240V @208V
R1500 &
R1500T2
@120V
R Series only
RT2 Series only
TABLE 1
MODEL
R1500
R1500T2
R2004
R2004T2
R2404
R2404T2
VOLTS
120
240
208
240
208
WATTS/AMPS
1500W/12.5A
2000W/8.3A
1500W/7.2A
2400W/10.0A
1800W/8.7A
WATTS/AMPS
1125W/9.4A
1500W/6.3A
1125W/5.4A
1800W/7.5A
1350W/6.5A
WATTS/AMPS
750W/6.3A
1000W/4.2A
750W/3.6A
1200W/5.0A
900W/4.3A
WATTS/AMPS
375W/3.1A
500W/2.1A
375W/1.8A
600W/2.5A
450W/2.2A
Note: “IF” Inner Frame models must be used with RBB Back
box.
Clip ‘n’ Fit ® Board
BLUE
JUMPER
RED
JUMPER
BACK BOX
END CAP
HOLE
Figure 4
End View
®