CTEK D250S Dual User Manual

14 • EN
INSTALLATION OF UNIT
1. Attach the temperature sensor holder on a flat surface on
one Service battery. Position it as close as possible to a
positive post.
2. Use the included drill template. Wiring is simplified if the
units are installed according to the drill template, but other
setups are possible.
3. Install the unit(s) on a surface where it can be properly fixed
and where the unit is not exposed to fuels, oils or splashes
of dirt.
4. Mount the unit with screws intended for the surface and
attach it with one screw in each of the four holes in the
corners of the unit. See picture 1. Mount the unit with M4 or
ST4.2 screws. The required torque depends on the surface
for mounting. Fig. 1 shows a CTEK D250S. The same proce-
dure is used for all devices.
5. Attach the cables and mount the cable screws with a torque
of 7 Nm/62 Lb-In. Use tool – hand power without tools is
not enough.
INSTALLATION OF CABLES
Figure 1
Figure 2
2Nm/18 Lb-In
7Nm/62 Lb-In
Allen key

CTEK D250S Dual Specifications

General

Charging Current	20 A
Operating Temperature	-20°C to +50°C
Protection Class	IP65
Battery Capacity	40–300 Ah
Battery Types	Lead-acid (Wet, MF, AGM, GEL)
Protection Features	Reverse polarity protection, over temperature protection
Input Voltage	11.5-23V, DC
Charging Stages	5-stage, Automatic