Watts Autotrol Magnum (CV+ Series) User Manual
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*The 962 controller functions in either a 12-hour or 24-hour clock
mode. Programming P13 (clock mode) before P1 or P2 will eliminate
any confusion when setting these parameters.
**The 962 controller functions in either U.S. or metric units.
Programming P12 (units of measure) before P3 or P4 will eliminate
any confusion when setting these parameters.
***The calculated gallon amount loaded into the daily registers (L7
through L13) at START-UP, uses this percentage of capacity.
Example: 90,000 grains in P5
÷ 10 grains in P3, 90,000/10 = 9,000
gallon capacity, 9,000 x .3 (30% in P16) = 2700 gallons, which is
loaded into L7 through L13, the daily average) = 3240 gallon. This
daily average will change as actual water usage information is
gathered
.
P10
Slow rinse
Time, in minutes, to achieve adequate slow rinse volume for resin type used. Resin manufacturers recom-
mend one to two and one half bed volumes of slow rinse water. The required amount of time is calculated
using the injector performance curves provided in Section 10.0 of this manual.
For example, assuming 4 cubic feet of resin and two bed volumes of slow rinse water for a 16 x 65, 50 psi
inlet pressure, program 43 minutes in Parameter P10. (4 cubic feet) x (7.5 gallons/cubic foot) = 60 gallons
of slow rinse water. A “16” injector is recommended for a 16-inch tank. From the “16” injector performance
chart the nominal slow rinse rate is 1.75 gpm. 60 gallons divided by 1.75 gallons per minute equals 34.2
minutes. Round up to 35 minutes and enter in P10.
P11
Fast rinse
Time, in minutes, to achieve adequate fast rinse volume for resin type used. For example, for standard
softening resin (lonac C-249), fast rinse at 30 gallons (0.11 m
3
) per cubic foot of resin. A unit with 3 ft
3
of
resin will require 90 gallons (0.34 m
3
) of water to obtain the resin manufacturer’s recommended fast rinse.
(30 gal/ft
3
x 3 ft
3
) = 90 gallons. (0.11 m
3
/ft
3
x 3 ft
3
= 0.34 m
3
). The fast rinse flow rate is controlled by the
drain line flow control. For this example, assume a 5 gpm (1.14 m
3
/hr) drain line flow control. Enter 18
minutes in P10. (90 minutes/5 gpm) = 18 minutes (0.34 m
3
/1/14 m
3
/hr = 0.3 hr/ x 60 min = 18 minutes).
P12
Units of measure
Self explanatory. Enter 0 for U.S., enter 1 for metric.
P13
Clock mode
Self explanatory. Enter 0 for 12-hour clock, enter 1 for 24-hour clock.
P14
Calendar override
0 = No calendar override. 1 - 30 = Maximum number of days between regeneration/backwash.
P15
Reserve type
Immediate or delay
regeneration
See P2. Not used in Alternating mode.
P16***
Fixed Reserve
capacity
If P15 is set at 1 or 3, enter the fixed reserve capacity (in gallons) (m
3
) that the unit will look for. This is
explained in numbers P2 and P15 above. Not used in Alternating mode.
P17
Operation type
Self explanatory. 0 = Single or Parallel Softener; 4 = Single or Parallel Filter.
P18
Salt/capacity lockout
Allows for the lock out of P4 and P5 so that NO unauthorized changes to the programmed values can be
made.
P19
Flow Sensor Select
This parameter is used to select the flow sensor that is to be used with the system. The factory-preset
value is 0. The range is 0 - 5.
0 = Magnum IT NHWB, 1 = Autotrol 1-inch turbine, 2 = Autotrol 2-inch turbine, 3 = user programmable K-
factor, 4 = user programmable pulse equivalent, 5 = Magnum IT HWB. The respective meter manufac-
turer should supply the K-factors or pulse equivalents for individual meters.
P20
K-factor or pulse
equivalent
The range is 000.01 to 255.00 in 0.01 steps. How this number is used is defined by the values stored in
P12 (units of measure) and P19 (flow sensor select). P12 is used to define gallons or liters (0 = gallons, 1
= liters). P19 is used to define K-factor which is defined as pulses per gallon or pulses per liter. Signet and
Sea-Flow are two flow sensor manufacturers that publish a K-factor. The control can now use any flow
sensor as long as the programmed K-factor is correct. The pulse equivalent is defined as gallons or liters
per pulse. The control will register 5 gallons of flow for every pulse if P12 = 0, P19 = 4 and P20 = 5.00.
Badger Meter is one manufacturer that uses a pulse equivalent. The control will not show flow rate if P19
= 4 (pulse equivalent). This is because pulses are accumulated over 10 seconds and flow rate is dis-
played in gallons per minute. The control will alternate between time of day and capacity remaining or
regeneration time remaining during normal operation.
P21
Remote
regeneration/ back-
wash switch delay
This parameter is used to program the length of signal time required to initiate a regeneration/backwash
using a differential pressure switch or remote start button/contact. This range is 1 to 254 seconds in 1-
second steps. The default is 60 seconds. A counter starts when there is a closed dry contact (no voltage)
to this imput. A regeneration/backwash will start when the contacts remain closed for the programmed
time. The counter will reset to zero when the contacts open for at least 0.02 seconds. The remote regen-
eration input cannot be used to perform a double manual regeneration. The remote regeneration input is
ignored during a regeneration/backwash.
P22
Factory use only
DO NOT CHANGE
Number
Description of
Program Values
Explanation