Advertisement
Quick Links
FC-1T-1VAC-1F user manual
The FC-1T-1VAC-1F automatically controls the temperature in a room by adjusting the speed of variable speed
fans and controlling a heater interlock.
When the temperature is at the set point, the FC-1T-1VAC-1F operates the fans at the idle speed setting and the
heater is off. When the temperature exceeds the set point, the control increases the speed of the fans. When the
temperature drops below the set point, the control shuts off the fans (in shut-off mode) or operates the fans at idle
speed (idle mode) and switches on the heater. See the examples starting on page 3.
Features
One variable speed output
One heater interlock output
Automatic shut-off and idle modes
Adjustable off setback for shut-off mode
Adjustable idle speed for idle mode
Adjustable temperature set point
Adjustable temperature differential
Three-second full-power-turn-on to minimize fan
ice-up
Installation
Switch OFF the power at the source before connecting the incoming power wires.
DO NOT switch on the power until you have finished all wiring and verified all equipment is
properly connected and free of obstructions.
Electrical ratings
120/230 VAC, 50/60 Hz
Input
10 A at 120/230 VAC, general-purpose (resistive)
Variable stage
7 FLA at 120/230 VAC, PSC motor
1/2 HP at 120 VAC, 1 HP at 230 VAC, PSC motor
15 A, 250 VAC ABC-type ceramic
Variable stage fuse
10 A at 120/230 VAC, general-purpose (resistive)
Heater relay
1/3 HP at 120 VAC, 1/2 HP at 230 VAC
360 W tungsten at 120 VAC
FC-1T-1VAC-1F
Two-digit LED display
Fahrenheit and Celsius display
Error code display for troubleshooting
Overload protection fuse
Six-foot temperature probe (extendable)
Rugged, NEMA 4X enclosure (corrosion
resistant, water resistant, and fire retardant)
CSA approval
Two-year limited warranty
1 / 8
The FLA (full load ampere)
rating accounts for the increase
in motor current draw when the
motor operates at less than full
speed. Make sure the
motor/equipment connected to
the variable stage does not
draw more than 7 FLA.
11148000
Advertisement
Subscribe to Our Youtube Channel
Related Manuals for Phason FC Series
Summary of Contents for Phason FC Series
- Page 1 FC-1T-1VAC-1F user manual The FC-1T-1VAC-1F automatically controls the temperature in a room by adjusting the speed of variable speed fans and controlling a heater interlock. When the temperature is at the set point, the FC-1T-1VAC-1F operates the fans at the idle speed setting and the heater is off.
- Page 2 Fill in the table below to help configure your control and verify that you do not exceed the electrical ratings. Fans A) Maximum current draw per fan B) Number of fans Total current draw = A × B Make Model Voltage rating Power factor Heater or furnace...
- Page 3 Off setback mode example 80°F 6°F 5°F TSP: DIFF: OSB: IDLE: 1. The fan will be off and the heater interlock will be on when the temperature is below 75°F. 2. When the temperature increases to 75°F (OSB) the fan operates at full speed for three seconds, then idle speed (minimum ventilation of 20%).
- Page 4 Idle mode example 80°F 6°F TSP: DIFF: OSB: IDLE: 1. Below 78°F the heater interlock will be on. 2. The fan operates at idle speed (20% of maximum ventilation) when the temperature is below 80°F. 3. Between 80°F and 86°F (DIFF) the fan speed changes proportionally with the temperature. If the temperature increases, fan speed increases.
-
Page 5: Display Alerts
Display alerts The temperature sensor cable has short circuited. The temperature sensor is damaged or the connecting wire is broken. The Temperature knob has been turned. The display will alternately flash and the ambient temperature. The control will not accept the new setting until the switch is clicked to the set position. The voltage switch is set to 230 but the incoming power is 120 volts. - Page 6 Changing the temperature display units The °F/°C jumper lets you select whether the control displays temperatures in degrees Fahrenheit or Celsius. To change the setting, position the jumper as shown. Hysteresis Hysteresis helps prevent damage to the control and equipment connected to it by preventing them from switching on and off rapidly when the temperature is hovering close to the set point.
- Page 7 Minimum ventilation in IDLE mode 1. Turn the IDLE SPEED knob fully counter-clockwise 2. Click the front cover switch to the right and hold while turning the TEMPERATURE knob fully clockwise then release the switch. The fan should be running at idle speed. 3.
- Page 8 Temperature differential (DIFF) DIFF is the number of degrees above the TSP that the fan reaches maximum speed. For example, if the TSP 80°F and the DIFF is 6°F, the fan will increase from idle at 80°F to maximum speed at 86°F. To display and adjust DIFF 1.
Need help?
Do you have a question about the FC Series and is the answer not in the manual?
Questions and answers