9
O
p
ti
on
s
Figure 9A - Small Cabinet
XGB
Wiring Schematic
Figure 9B - Large Cabinet
XGB
Wiring Schematic
3.5.8 Connect the ground wire to the ground connection located in
the supply connection housing; once again, making sure that the
wire is sufficiently long to slide back into the housing with the trolley.
See Figure 10.
Figure 10 - Supply Connection
3.5.9
Due to the presence of hazardous materials, ensure that
the terminal housing covers, plugs, etc., are secured (but not
over-tightened) before powering the heater.
4.0 TEMPERATURE CONTROL
4.1 BUILT-IN THERMOSTAT (OPTIONAL)
When specified, the unit comes equipped with a built-in thermostat
pre-wired to all other standard controls. Set the temperature to the
desired operating condition.
4.2 REMOTE THERMOSTAT (OPTIONAL)
Install the XT thermostat in accordance with the instruction sheet
provided. Terminals “T1” and “T2” in the heater supply housing are
provided for connection to the remote thermostat and are pre-wired
to the rest of the control circuit. Remove the jumper wire between
“T1” and “T2” and connect the thermostat to these terminals. (Refer
to Figure 9). Set the temperature to the desired operating condition.
5.0 “AUTO / OFF / FAN-ONLY” SWITCH (OPTIONAL)
If ordered, a factory installed “auto / off / fan-only” switch may be
included on the heater. The “fan-only” feature allows the heater to
cycle in a “heat” mode dictated by the controlling thermostat, even
though the fan is operating continuously.
6.0 NORMAL SEQUENCE OF OPERATION
6.1 The heater must be properly mounted and wired in accordance
with the instructions contained in this manual. The fan blade must be
free to rotate with no obstruction to air inlet or outlet areas.
6.2 Energize the heater at the rated supply voltage.
6.3 Assuming that the thermostat calls for heat, i.e. the thermostat is
set to a higher temperature that ambient:
a) The main contactor will energize the elements and the fan motor.
b) After the inlet air temperature rises to the set point of the
thermostat, the thermostat contacts will open and the main contactor
will de-energize the elements and the fan motor.
Note: The large cabinet
XGB
incorporates a fan delay feature in both
the “ON” and “OFF” cycles. This is a desirable feature as it allows
the heater to come to temperature before the fan operates (no cold
blasts) and to cool down the “OFF” cycle (longer life for control
components and motor). Delay “ON” is 15 - 40 seconds and delay
“OFF” is 60 -160 seconds.
6.4 The cycle described above will repeat when the ambient
temperature falls below the thermostat set point.
SIDE
LOOP
TOP
1 OR 3
Ø
SUPPLY
L3
L2
L1
C
H3
H2
H1
TO HEATING
LOAD
X1
120V T1 T2 HI-LIMITS
X2 C/AUX
NO MOTOR
REMOVE JUMPER FOR
OPTIONAL THERMOSTAT
C
M
M
H1
H2
H3
TO HEATING
LOAD
REMOVE JUMPER FOR
OPTIONAL THERMOSTAT
120V HI-LIMITS
FD
C
FD
1
3
4
5
X2
T1 T2
3
Ø
ONLY
C
3
Ø
ONLY
X1
L3 L2 L1
L1
L2
L3
1 OR 3
Ø
SUPPLY
Figure 9 –
Small Cabinet Wiring Schematic
Figure 9A - Small Cabinet
XGB
Wiring Schematic
Figure 9B - Large Cabinet
XGB
Wiring Schematic
3.5.8 Connect the ground wire to the ground connection located in
the supply connection housing; once again, making sure that the
wire is sufficiently long to slide back into the housing with the trolley.
See Figure 10.
Figure 10 - Supply Connection
3.5.9
Due to the presence of hazardous materials, ensure that
the terminal housing covers, plugs, etc., are secured (but not
over-tightened) before powering the heater.
4.0 TEMPERATURE CONTROL
4.1 BUILT-IN THERMOSTAT (OPTIONAL)
When specified, the unit comes equipped with a built-in thermostat
pre-wired to all other standard controls. Set the temperature to the
desired operating condition.
4.2 REMOTE THERMOSTAT (OPTIONAL)
Install the XT thermostat in accordance with the instruction sheet
provided. Terminals “T1” and “T2” in the heater supply housing are
provided for connection to the remote thermostat and are pre-wired
to the rest of the control circuit. Remove the jumper wire between
“T1” and “T2” and connect the thermostat to these terminals. (Refer
to Figure 9). Set the temperature to the desired operating condition.
5.0 “AUTO / OFF / FAN-ONLY” SWITCH (OPTIONAL)
If ordered, a factory installed “auto / off / fan-only” switch may be
included on the heater. The “fan-only” feature allows the heater to
cycle in a “heat” mode dictated by the controlling thermostat, even
though the fan is operating continuously.
6.0 NORMAL SEQUENCE OF OPERATION
6.1 The heater must be properly mounted and wired in accordance
with the instructions contained in this manual. The fan blade must be
free to rotate with no obstruction to air inlet or outlet areas.
6.2 Energize the heater at the rated supply voltage.
6.3 Assuming that the thermostat calls for heat, i.e. the thermostat is
set to a higher temperature that ambient:
a) The main contactor will energize the elements and the fan motor.
b) After the inlet air temperature rises to the set point of the
thermostat, the thermostat contacts will open and the main contactor
will de-energize the elements and the fan motor.
Note: The large cabinet
XGB
incorporates a fan delay feature in both
the “ON” and “OFF” cycles. This is a desirable feature as it allows
the heater to come to temperature before the fan operates (no cold
blasts) and to cool down the “OFF” cycle (longer life for control
components and motor). Delay “ON” is 15 - 40 seconds and delay
“OFF” is 60 -160 seconds.
6.4 The cycle described above will repeat when the ambient
temperature falls below the thermostat set point.
SIDE
LOOP
TOP
1 OR 3
Ø
SUPPLY
L3
L2
L1
C
H3
H2
H1
TO HEATING
LOAD
X1
120V T1 T2 HI-LIMITS
X2 C/AUX
NO MOTOR
REMOVE JUMPER FOR
OPTIONAL THERMOSTAT
C
M
M
H1
H2
H3
TO HEATING
LOAD
REMOVE JUMPER FOR
OPTIONAL THERMOSTAT
120V HI-LIMITS
FD
C
FD
1
3
4
5
X2
T1 T2
3
Ø
ONLY
C
3
Ø
ONLY
X1
L3 L2 L1
L1
L2
L3
1 OR 3
Ø
SUPPLY
Figure 10 –
Large Cabinet Wiring Schematic
8.
Connect the ground wire to the ground connection
located in the supply connection housing; once again,
making sure that the wire is sufficiently long to slide
back into the housing with the trolley. See Figure 11,
page 9.
Figure 9A - Small Cabinet
XGB
Wiring Schematic
Figure 9B - Large Cabinet
XGB
Wiring Schematic
3.5.8 Connect the ground wire to the ground connection located in
the supply connection housing; once again, making sure that the
wire is sufficiently long to slide back into the housing with the trolley.
See Figure 10.
Figure 10 - Supply Connection
3.5.9
Due to the presence of hazardous materials, ensure that
the terminal housing covers, plugs, etc., are secured (but not
over-tightened) before powering the heater.
4.0 TEMPERATURE CONTROL
4.1 BUILT-IN THERMOSTAT (OPTIONAL)
When specified, the unit comes equipped with a built-in thermostat
pre-wired to all other standard controls. Set the temperature to the
desired operating condition.
4.2 REMOTE THERMOSTAT (OPTIONAL)
Install the XT thermostat in accordance with the instruction sheet
provided. Terminals “T1” and “T2” in the heater supply housing are
provided for connection to the remote thermostat and are pre-wired
to the rest of the control circuit. Remove the jumper wire between
“T1” and “T2” and connect the thermostat to these terminals. (Refer
to Figure 9). Set the temperature to the desired operating condition.
5.0 “AUTO / OFF / FAN-ONLY” SWITCH (OPTIONAL)
If ordered, a factory installed “auto / off / fan-only” switch may be
included on the heater. The “fan-only” feature allows the heater to
cycle in a “heat” mode dictated by the controlling thermostat, even
though the fan is operating continuously.
6.0 NORMAL SEQUENCE OF OPERATION
6.1 The heater must be properly mounted and wired in accordance
with the instructions contained in this manual. The fan blade must be
free to rotate with no obstruction to air inlet or outlet areas.
6.2 Energize the heater at the rated supply voltage.
6.3 Assuming that the thermostat calls for heat, i.e. the thermostat is
set to a higher temperature that ambient:
a) The main contactor will energize the elements and the fan motor.
b) After the inlet air temperature rises to the set point of the
thermostat, the thermostat contacts will open and the main contactor
will de-energize the elements and the fan motor.
Note: The large cabinet
XGB
incorporates a fan delay feature in both
the “ON” and “OFF” cycles. This is a desirable feature as it allows
the heater to come to temperature before the fan operates (no cold
blasts) and to cool down the “OFF” cycle (longer life for control
components and motor). Delay “ON” is 15 - 40 seconds and delay
“OFF” is 60 -160 seconds.
6.4 The cycle described above will repeat when the ambient
temperature falls below the thermostat set point.
SIDE
LOOP
TOP
1 OR 3
Ø
SUPPLY
L3
L2
L1
C
H3
H2
H1
TO HEATING
LOAD
X1
120V T1 T2 HI-LIMITS
X2 C/AUX
NO MOTOR
REMOVE JUMPER FOR
OPTIONAL THERMOSTAT
C
M
M
H1
H2
H3
TO HEATING
LOAD
REMOVE JUMPER FOR
OPTIONAL THERMOSTAT
120V HI-LIMITS
FD
C
FD
1
3
4
5
X2
T1 T2
3
Ø
ONLY
C
3
Ø
ONLY
X1
L3 L2 L1
L1
L2
L3
1 OR 3
Ø
SUPPLY
Figure 11 – Supply Connection
9.
Due to the presence of hazardous materials, ensure that
the terminal housing covers, plugs, etc., are secured (but
not over-tightened) before powering the heater.
D.
OPTIONS
D.1
Temperature Control
1.
Built-in Thermostat (Optional)
When specified, the unit comes equipped with a built-in
thermostat pre-wired to all other standard controls. Set
the temperature to the desired operating condition.
2.
Remote Thermostat (Optional)
Install the XT thermostat in accordance with the
instruction sheet provided. Terminals “T1" and “T2" in the
heater supply housing are provided for connection to
the remote thermostat and are pre-wired to the rest of
the control circuit. Remove the jumper wire between “T1"
and “T2" and connect the thermostat to these terminals.
(Refer to Figure 9 and Figure 10, page 9 ). Set the
temperature to the desired operating condition.
D.2
“AUTO/OFF/FAN-ONLY” (Optional)
If ordered, a factory installed
“AUTO/OFF/FAN-ONLY”
switch may be included on the heater. The “fan-only”
feature allows the heater to cycle in a “heat” mode
dictated by the controlling thermostat, even though the
fan is operating continuously.
