EDR4 1169 G 10/03
4
Site requirements
Radio interference
Radio interference can reduce the performance of garage door opener remote controls. Ga-
rage door remote controls␣ are required to operate in shared radio frequency bands. Regula-
tions permit other users to continuously operate higher powered devices such as baby moni-
tors or wireless headphones in these shared bands. These devices may cause radio interfer-
ence that reduces the performance of your remote control. Switch off interfering devices if
possible.␣
Remote controls and receivers that operate on alternative frequencies are available at addi-
tional cost.
Electrical Power Supply
The opener is for Australian and New Zealand conditions of 220-240 Volts AC - 50 Hz.
There must be an earthed power point within 1.6 metres of the mounting position.
Garage Door
This opener is designed for a residential sectional door to 2.1 metres high or a one piece
tilting door to 2.4 metres high and 6.0 metres wide. For installation on taller doors see your
Merlin dealer.
Check that it is possible to raise the door by hand through the full height of the opening. The
door should operate smoothly, lifting up and down without the door or door mechanism bind-
ing. The door must not jam in the tracks.
A properly balanced tilt door will stop of its own accord at about the two thirds closed posi-
tion. (Springs may need adjustment accordingly).
A properly sprung sectional door will either close of its own accord for the last 500 mm of its
travel or it will require a very light added force. If the door springs back, it is advisable to have
the spring tension adjusted. Do not attempt this yourself. Springs can only be adjusted safely
by a trained professional installer.
If in doubt about whether the door is suitable for automation consult an Authorised Merlin
Installer.
Tilt door clearances
The opener has been designed to fit most existing doors. The minimum installation clearance
from the garage ceiling to the top edge of the door during any part of the door’s travel is 100
mm.
The header bracket is to fit as close as practical above the top of the door, in the centre.
The door bracket is to fit at the highest possible point of the door, in the centre. The bracket
may be fixed vertically or horizontally to suit. A solid fixing point is required.
The overall length of the opener when assembled is 3150mm.
Clear space of around 600 mm is required behind the fully open door.
Sectional door clearances
For sectional doors using torsion springs the minimum allowable height from the top of the
closed door to the ceiling is 200 mm.
