F) Equalize Timer Option - NewMar PT-14W Installation And Operation Manual

Important note: When wiring multiple chargers in parallel (see section E) and using the temperature
compensation option, you must use a separate sensor for each charger, and the sensors must be
mounted close together in the same battery box or on the same battery for proper operation.
Without the temperature sensor installed the output of the charger will be at the nominal voltages
specified in the chart on the following page at 72° F (22.2° C). The absorption/float output voltage
settings at that temperature are listed in the chart.
To provide some examples which clarify the effect of the temperature compensation sensor, the chart
lists the absorption/float output voltages of the charger when batteries are at 72° F (or when the sensor
is not installed), and at cold (50° F) or hot (90° F) battery temperatures with the sensor installed:
Battery Output VDC: 12 Volt Models
Temperature Charge
⁰F ⁰C
50 10
72 22.2
90 32.2
F) Equalize Timer Option
Some manufacturers of flooded lead‐acid batteries recommend a charging process known as
equalization for extended battery life. This process involves occasionally charging a wet lead‐acid battery
at a very high voltage for a short period of time in order to completely de‐sulphate each of the battery
plates, essentially equalizing their voltage. The installer of the Phase Three charger may choose to wire
in this option at the time of installation.
Note: The equalization process is for Flooded Lead‐Acid batteries only!
The equalize circuit (connector located inside the PT charger) should be wired through a manual or
electric timer which provides a closed contact when engaged and an open circuit when timed out (SPST
— Single Pole Single Throw). Do not use a manually operated switch for activating the equalize circuit.
This is because unless the charger is reverted to a safe float voltage in a timely manner, the batteries will
almost certainly be damaged or destroyed. The timer contacts should be a 0‐12 hour type, capable of
carrying a minimum of 100 mA at 5V DC
CAUTION: Do not install the timer in an area requiring ingnition protected equipment unless it has
been certified to meet ignition protection requirements.
The equalization circuit of the Phase Three charger boosts output voltage to approximately 8 % above
float voltage. Refer to the battery manufacturer's instructions when deciding the appropriate time
period setting for this voltage to achieve proper equalization, while ensuring batteries are not damaged
by increased battery temperature. This installation should only be performed by a qualified technician.
Installing the timer requires a mating connector with dual wires which are plugged into a jack on the
internal charger function circuit board. The connector/wire assembly is available from NEWMAR.
Lead‐
Gel‐Cell Acid
14.4 14.6
14.0* 14.2*
13.7 13.9
Output VDC: 24 Volt Models
Float Charge
Gel‐ Lead‐
Cell Acid Gel‐Cell
14.0 13.8 28.8
13.6* 13.4*
13.3 13.1 27.4
Float
Lead‐ Gel‐
Acid Cell
29.2 28.0
28* 28.4* 27.2*
27.8 26.6
Lead‐
Acid
27.6
26.8*
26.2