Installation and Service Manual

2-506.14
Figure 8.1 - Side terminal Box, Models VE50 thru VE250
*NEC fuse requirements are 125 percent of total amperes.
Check with local code.
INSTALLATION
Summer/Winter Switch
To allow a choice of fan operation of the electric unit heater
for heating and/or ventilation, a summer/winter toggle switch
kit is available for field installation. In the winter position
the thermostat will cycle the fan on and off with the heating
elements. In the summer position the fan runs continuously
for ventilation while the heating elements are controlled by the
thermostat. This position can also be used in winter to reduce
ceiling air stratification and reduce ceiling heat loss. Refer to
separate bulletin included in the kit for installation and wiring.
Low-Voltage Control
Low-voltage control is available for field installation on vertical
electric unit heaters. The control permits use of a low-voltage
thermostat that can also provide closer temperature control.
Models VE and PTE 300, 400, 500 cannot operate in two stages
with this control and a low-voltage thermostat, but will respond
with full operation of all elements.
OVERHEAT
CONTROL
ELEMENT
CONNECTION
Model Volume
VE50 thru 100 3,029 cm
3
VE150 thru 250 2,883 cm
3
VE/PTE300 thru 500 9,570 cm
3
JUNCTION BOX
POWER SUPPLY
OPENING
THERMOSTAT
WIRING OPENING
Table 8.2 - Power Junction Box Useful VolumesTable 8.1 - Wiring Data, Vertical Units
Min. Min.
Model Power Power Total* Wire Size Wire Conduit
No. Code Supply Amps A.W.G. Type Size
12 240/1 22.1 10 1/2
31 208/3 15.2 12 TW 1/2
VE50
32 240/3 13.3 12 60°C 1/2
33 480/3 7.3 14 1/2
12 240/1 32.5 6 1
31 208/3 22.1 10 TW 1/2
VE75
32 240/3 19.3 10 60°C 1/2
33 480/3 10.3 14 1/2
12 240/1 42.9 6 1
31 208/3 29.0 8 TW 3/4
VE100
32 240/3 25.3 8 60°C 3/4
33 480/3 13.3 12 1/2
31 208/3 42.6 6 1
VE150 32 240/3 37.1 6 TW 1
33 480/3 19.0 10 60°C 1/2
32 240/3 46.7 4 TW 1
VE200
33 480/3 23.9 10 60°C 1/2
VE250 33 480/3 31.1 8 TW/60°C 3/4
PTE/ THW
33 480/3 37.6 8 3/4
VE300 75°C
PTE/ THW
33 480/3 49.7 6 1
VE400 75°C
PTE/ THW
33 480/3 61.7 4 1
VE500 75°C
8