| SBE SERIES
ELECTROFLO HEATING SYSTEM The Hastings `ELECTROFLO
features the package concept in electric heating units. A UL listed electric heater is
incorporated into a factory assembled, wired and tested heating system. Three temperature
control sequences are available to meet the requirements of most heating
applications:
APPLICATION AND OPERATING SEQUENCE
SBEH - SPACE HEATING (100% RETURN AIR)
The SBEH unit is designed for 100% return air room heating
applications with the air temperature being controlled from the heated space. The SBEH
operating sequence is not recommended for ventilating applications.
The "On" position of the "On-Off-Auto"
blower switch provides continuous blower operation. The "Auto" position allows
blower operation whenever the room thermostat calls for heat. With the "
Summer-Off-Winter" season switch in the "Winter" position, the room
thermostat stages the electric heater to maintain the desired space air temperature.
With the "Summer-Off-Winter" season switch in the
"Summer" position, electric heater is de-energized and blower operates to
provide recirculated air.
SBEM - MAKE - UP AIR (100% OUTSIDE AIR)
The SBEM make-up air unit is designed to replace exhausted
building air with 100% outside air to prevent the many problems of "air
starvation." This replacement air is heated when the outside air temperature is
below the desired discharge air conditions.
The "On" position of the "On-Off" blower switch
provides continuous blower operations. With the "Summer-Off-Winter" season
switch in the "Winter" position, the discharge air temperature controller stages
the electric heater to maintain desired leaving air temperature.
With the "Summer-Off-Winter" season switch in the
"Summer" position, the electric heater is de-energized and blower operates to
provides summer ventililation.
SBEV - HEATING & VENTILATING (MIXED OR 100% OUTSIDE AIR)
The SBEV combines the control of both make-up air and space air
temperature. This sequence is equally effective for up to 100% of either outside or return
air heating and ventilating applications, or 100% outside air only.
The "On" position of the "On-Off-Auto" blower
switch provides continuous blower operation. The "Auto" position allows blower
operation whenever the room thermostat calls for heat.
With the "Summer-Off-Winter" season switch in the
"Winter" position, the electric heater is staged by either the room thermostat
or the discharge air controller. Hearing is controlled by the room thermostat. If
discharge temperature falls below the setting of the discharge air controller, the room
thermostat is over-ridden and heating output is increased until discharge air controller
is satisfied.
With the "Summer-Off-Winter" season switch in the
"Summer" position, the electric heater is de-energized and blower operates to
provide summer ventilation. |
