Qmark ST - Commercial Slope Top Convectors - Manual (Page 3)

OPERATION INSTRUCTIONS
1. This heater must be properly installed before it is used.
2. Heater must be controlled by a thermostat. If thermostat is
internal factory installed see below. If external thermostat is
provided, refer to the installation and operating instructions
provided with thermostat.
3. When factory thermostat is provided, the control will be locat-
ed inside heater behind grille with access to the thermostat
shaft obtained through the grille louver opening using a small
flat blade screwdriver.
4. On initial start up and check out, before heater is energized,
rotate thermostat shaft to the full counter-clockwise (lowest
heat) setting. Connect power to the heater and check to ver-
ify the heater is not heating. If heating, disconnect and
check wiring.
5. Rotate thermostat shaft to the full clockwise (CW) (max heat)
setting and allow heater to operate for at least 5 minutes and
verify it is heating.
6. Allow heater to operate until room ambient reached desired
comfort level and then slowly rotate thermostat shaft counter-
clockwise (CCW) until you hear or feel a click. This will pro-
vide a set point to allow the thermostat to cycle the heater on
and off to maintain this approximate temperature. Some
slight adjustments may be necessary to fine tune the heater
to provide the most desired room comfort. To increase time
heater stays on and increase the room temperature, slightly
rotate the thermostat in the CW direction. Likewise, to
reduce the room temperature, slightly rotate the thermostat
in the CCW direction.
3
A
B
5” (127mm) 5” (127mm)
5-13/16”
(147mm)
2” (51mm)
2”
(51mm)
K.O. K.O.
K.O.
2.1”
(53mm)
1.32”
(33mm)
1.32”
Wall (33.4mm)
10”
(253mm)
3.25”
(82mm)
Bottom View
“N” mounting
holes
7/8” (21mm) x 1-1/8” (27mm) Nested KOs (Qty. 6)
Fig. 1
Dimensions “N”
Wattage “A” (Length) “B” Holes
500 28” (709mm) – –
750 36” (912mm) – –
1000 48” (1216mm) 19” (481mm) 2
1250 60” (1520mm) 16.68” (423mm) 4
1500 72” (1824mm) 20.63” (523mm) 4
2000 96” (2432mm) 21.5” (545mm) 6
2500 120” (3040mm) 27.5” (697mm) 6
Dimensions
Element
GND.
Factory wiring
Field wiring
Power Supply
To other
heater
To other
heater
GND.
Protector For supply connections use 75˚
copper wire as follows:
Amps Wire size
12 14 AWG
16 12 AWG
24 10 AWG
35 8 AWG
45 4 AWG
Fig. 2 Wiring Diagram