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Whichever method is chosen it is important that the lock and strike plate are aligned correctly. This is achieved when
the top of the lock face plate aligns with the top of the strike plate. It is also important that when the door is closed
the gap between the lock and strike plate does not exceed 6mm otherwise the lock will not sense the strikes position
resulting in incorrect operation.
The YD25K can be installed vertically or horizontally but is not designed to be mounted in a floor cavity firing
upwards or in a wet environment.
4.2. Electrical
The first consideration is to establish where to run the wires and decide on what feedback is required from the lock.
There are a total of eleven available connections and for a fully featured lock it is compulsory to connect three with
the other eight providing feedback. Alternatively the lock does operate with reduced features on two compulsory
connections and eight optional.
The three essential connections are; Positive (+), Negative (-) and Key Position Control (CL). The eight optional
connections provide feedback about the lock status; Door Position and Bolt Position. If desired, wires can be run
from these connections to integrate into access control or alarm systems to provide full monitoring.
Finally the correct gauge of wire needs to be chosen as when connecting the power wires (+ and -) to the lock,
voltage drop across these wires can limit the lock operation. For all the remaining connections, a lower gauge wire
can be used as these are only signal wires.
The following chart shows the appropriate wire gauge for a range of distances between the lock and power supply
assuming the voltage measured at the lock is within the range of 12-24VDC ±10%.
AWG
24
22
20
18
16
14
5. INSTALLATION
Two installation examples are detailed on the following pages however any combination of mortise and surface
mounting can be achieved. Whichever installation method is chosen it is vital to ensure that the lock face plate and
the strike plate align correctly and the gap between the locks face plate and the strike plate does not exceed 6mm
when the door is closed.
5.1. Mortise installation
A typical mortise installation is described with the lock fitted into the door frame while the strike plate is secured to
the door. It is possible to install the lock into the door and the strike plate to the frame however running the wiring to
the lock can be difficult.
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2
AREA (MM
)
0.20
0.33
0.52
0.82
1.31
2.08
MAXIMUM DISTANCE (M)
12VDC
24VDC
10
16
26
41
65
103
30
48
77
122
195
310
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