KMC Controls CCC-1002 - Manual (Page 2)

CCC-1001/1002 (Dual Input Receiver Controllers) 2 Installation Guide
Authority Calibration
This adjustment determines the effect of a secondary
transmitter (Port 3) on the setpoint of the receiver-
controller.
Example: Reset the HWS (Hot Water Supply)
temperature setpoint based on OAT
(Outside Air Temperature). The HWS
transmitter has a range of 40 to 240° F for 3
to 15 psi (0.06 psi/° F), and it is connected
to the Port 1 primary input. The OAT
transmitter has a range of –40 to 160° F for 3
to 15 psi (0.06 psi/° F), and it is connected to
the Port 3 secondary input.
NOTE: This example does not compensate for TR
(throttling range) across the reset schedule
but assumes a constant branch pressure.
The reset schedule shows the temperatures and pres-
sures at the extreme ends of the operating schedule.
Adjustments and Calibration
Throttling Range Adjustment
Throttling range % can be calculated by the follow-
ing formula:
Port 1 Units Desired to Make
100% Change in Port B (Output)
Port 1 Primary Input Span
(Same Units as Above)
x
12
Span of Controlled
Device (psi)
x 100
Example: Port 1 is connected to a temperature
transmitter with a range of 40 to 240° F
(200° F span). Branch output is controlling
a 3 to 8 psi (5 psi span) device. Desired
throttling range is 20° F. Then throttling
range % = (20° F)/(200° F) x (12 psi)/(5 psi) x
100 = 24%.
D P @ Port 1
D P @ Port 3
x 100%
Reset Schedule
OAT Port #3
Pressure
Outside Air
Temperature
Hot Water
Temperature
HWS Port #1
Pressure
5.4 psi 0° F 180° F 11.4 psi
7.5 psi 35° F 140° F 9.0 psi
9.6 psi 70° F 100° F 6.6 psi
Authority % =
(D P = Change in Pressure)
=
11.4 – 6.6
9.6 – 5.4
x 100% = 114%
CCC-1001 Controller
NOTE: Throttling range is the percent change of
the primary input (Port 1) that causes a
100% change in the branch output (Port B).
Authority is the change in the secondary
input (Port 3) in relation to the change in
the primary input that will cause the same
change in the output and is expressed as a
percentage (see the Authority Calibration
section).
1. Remove cover before making any adjustments.
2. Set the desired throttling range:
A. Loosen large center screw (1 turn
maximum).
B. Remove main control air from Port M.
C. Move the setpoint indicator to the desired
% throttling range (4 to 40%) on the DA
or RA scale. See the Throttling Range
Adjustment section on page 3.
D. Connect main air to “M.”
3. Set the desired authority:
A. Calculate the required authority. See the
Authority Calibration section.
B. Set the authority indicator to the desired
value.
C. Tighten center screw.
4. Adjust the setpoint output by turning the setpoint
screw (located at the lower right of the unit). See
the Setpoint Calibration section on page 3.
5. Reinstall the cover.
CCC-1002 Controller
NOTE: Follow the steps 1 through 4 for adjusting
the CCC-1001, and then continue with steps
5 through 8.
5. Turn the face dial until the desired input signal
(Port 1) pressure value lines up with the clear
arrow indicator.
6. Carefully slide the cover straight down, so that
the cover gear teeth and the setpoint adjustment
shaft mesh.
7. Tighten the cover.
8. Apply the adhesive dial face if required.
(In the Example Above)