WattMaster WCC II - Manual (Page 221)

Section 5: Installation Guide
WCC II Operator’s Guide
Operator Interfaces 5-19
If you ordered a V-out board which has more than one pair of
potentiometers to allow you to have different changeover and
hysteresis setpoints for the binary outputs, the potentiometers are
labeled as follows:
To understand the V-out board better, consider a changeover
setpoint of 7.5 VDC with a hysteresis of 1 VDC. The chip switch
on the V-out board will open when the voltage is 8 VDC and will
not close until the voltage drops to 7 VDC. Assume the Analog
Input Screen on the ECC/WCC II system is set up according to the
following parameters:
Changeover Setpoint Hysteresis
----------------------- ---------------------------
Binary Output Potentiometer Label Potentiometer Label
------------- ------------- -------- -------------- -----------
1 R19 “SET 1” R9 “DELTA 1”
2 R20 “SET 2” R10 “DELTA 2”
3 R21 “SET 3” R11 “DELTA 3”
4 R22 “SET 4” R12 “DELTA 4”
5 R23 “SET 5” R13 “DELTA 5”
6 R24 “SET 6” R14 “DELTA 6”
7 R25 “SET 7” R15 “DELTA 7”
8 R26 “SET 8” R16 “DELTA 8”
Output = 0.0 volts DC when the Space Temperature = 65 Deg F
Output = 15.0 volts DC when the Space Temperature = 80 Deg F
Space Temperature Voltage Supplied to
(°F) the V-out Board
----------------------- ---------------------
65 0.0 ---------------------------
66 1.0
67 2.0
68 3.0 Chip Switch Closed
69 4.0
70 5.0
71 6.0
72 7.0 ---------------------------
72.5 Setpoint 7.5 Hysteresis
73 8.0 ---------------------------
74 9.0
75 10.0
76 11.0 Chip Switch Open
77 12.0
78 13.0
79 14.0
80 15.0 ---------------------------