CTC-4001/4004
1
Installation Guide
Installation Guide
3-Way, Switching, Duct Thermostat
CTC-4001/4004
Mounting
1. Drill a 5/8" diameter hole in the duct work.
2. Insert the thermostat in the duct.
3. Secure with sheet metal screws fastened through
the two 3/16" (5 mm) mounting holes.
Connections
General
The CTC-4001 and CTC-4004 are not snap-acting.
The unit must be below or above the setpoint range
to completely switch. At temperatures within the
setpoint range, all three ports are connected.
The setpoint adjustment allows ranges to be moved
up 5° F or down 10° from the default values.
The CTC-4001 and CTC-4004 use 1/4" (6 mm) OD
polyethylene tubing for all connections. Make neces-
sary connections based on the model.
CTC-4001
• Port C is the (filtered) common
• Port A is closed above 75° F (24° C)
• Port B is closed below 70° F (21° C)
NOTE: For the CTC-4001, when temperature
is
below
70° F (21° C), ports A and C
are connected, but B is blocked. When
temperature is
above
75° F (24° C), ports
B and C are connected, but A is blocked.
Between 70 and 75° F, all ports are
connected.
CTC-4004
• Port C is the (filtered) common
• Port A is closed above 70° F (21° C)
• Port B is closed below 65° F (18° C)
NOTE: For the CTC-4004, when temperature
is
below
65° F (18° C), ports A and C
are connected, but B is blocked. When
temperature is
above
70° F (21° C), ports
B and C are connected, but A is blocked.
Between 65 and 70° F, all ports are
connected.
Mounting
1
Connections
1
General
1
CTC-4001
1
CTC-4004
1
Adjustments and Calibration 2
Maintenance
2
Sample Application 2
Important Notices 2
