8 | SmithsEP.co.uk | Issue 001 - July 2022
Issue 001 - July 2022 | SmithsEP.co.uk | 9
Mounting
screw holes
Floor
X
78.5
640
87
285
73
445
100mm min
(LL 640)
78.5
Model X
LL 640 485
LL 1030 875
LL 1390 1235
1.
Fix unit to wall
Ensure the unit is level and fix to the wall using
suitable fixings via the chassis mounting holes.
The minimum height from the floor should be
100mm and if there is any shelving above the
unit it should be at a minumum height of 100mm
above the unit.
Installation - product
2.
Connect the pipes
We recommend the use of full flow isolating
valves. These valves should be accessible after
completion of the installation. Pipe work can be
brought out from the heater directly or through
the rear chassis.
Connect the heating system flow and return pipes
to the heater pipework. Do not use soldered
fittings to connect onto the heater, as the heat
generated could damage internal components
and prevent disconnection from the system for
maintenance. The pipe nearest the chassis is
the supply flow and the pipe nearest the front
of the heater is the return. Failure to connect
(connections are labelled) to the correct pipes will
result in the heater not working correctly.
3.
Electrical supply and electrical
connection
ALL ELECTRICAL INSTALLATIONS CONNECTIONS
MUST COMPLY WITH BS7671, 1992 AND THE
IEE REGULATIONS. CHECK THE VOLTAGE ON THE
HEATER IS CORRECT FOR YOUR SUPPLY. IF IN
DOUBT, CONSULT A QUALIFIED ELECTRICIAN.
If the pre-wired mains cable is damaged, it must
be replaced by the manufacturer, its service agent
or similarly qualified persons.
Isolate the supply and connect the heater
three core mains lead to the fused spur (3A) in
accordance with the instructions provided on
the mains lead label. (The supply wire which
is coloured green or green and yellow must
be connected to the terminal marked E on the
appliance, the supply wire which is coloured black
or blue must be connected to the terminal marked
N on the appliance and the supply wire which is
coloured red or brown must be connected to the
terminal marked L on the appliance).
The fused spur must not be directly above the
heater but should be accessible after completion
of the installation.
4.
Commissioning
1. Turn on the electrical supply at the fused spur.
2. Set the thermostat to maximum using the
increase the button marked with an upwards
pointing arrow on the controller.
3. Turn on the central heating system.
4. Balance the central heating system to ensure
the correct system flow rate is achieved.
5. If the installation is working correctly remember
to reset the thermostat control to its normal
setting.
6. Set the fan speed control to the desired setting
(low, normal or high) using the fan speed
button on the controller.
7. This Installation and User Guide must be left
with the user for future reference.
5.
Installation completion
Refit outer casing to the chassis and secure
with screws.
1st
2nd
Check for water leaks. Remove any trapped air
from the system via the vent valve on the top left
hand side of the heat exchanger. Do not over
tighten the air vent.
Heating operation
Ensure the central heating system is ON. Switch on
the power supply to the unit. Set the thermostat
control to the desired temperature.
Providing the water temperature in the central
heating system is more than 33°C (Standard LTC
only) and the thermostat is calling for heat the
product will switch on.