General Information; Heating System Design; Selection And Sizing For Heating - Purmo OPTIMO 500 Notice D'installation, D'utilisation Et De Maintenance

1.0 Safety Information
Keep the appliance and its cord out
of reach of children aged less than
8 years.
Children of less than 3 years should
be kept away from the unit unless
continuously supervised.
Children aged from 3 years and less
than 8 years shall only switch on / off
the appliance provided that it has

2.0 General Information

l This OPTIMO
® fan convector is designed for installation in the
cavity beneath kitchen cupboards on the vacant floor space, or
other similar locations.
l No rear access shall be available to the unit after installation.
l The OPTIMO
® should only be used on closed circulation, two
pipe, pump assisted central heating systems.
l Before proceeding with the installation, the heating system
design must be considered and the unit correctly sized to
meet the heat loss requirements of the room.
l Flexible hoses with integral isolating valves are supplied to
allow easy installation and future access for maintenance.

3.0 Heating System Design

This fan convector must be fitted on a two pipe, pumped
circulation heating system.
For optimum fan convector heating performance the system must
be capable of providing sufficient hot water through the heat
exchanger. This means that:
1. The minimum pipe size from boiler to fan convector must be at
least 15mm. Microbore pipe MUST NOT be used.
2. Where the unit is fitted on to a system with other emitters a
separate circuit for the fan convector should be considered
to provide adequate water flow.

4.0 Selection and Sizing for Heating

l Heat output performance is given in the Technical Data
section of this manual.
l Since OPTIMO
®
units are supplied with fan speed control it is
important to size the unit to match the calculated heat loss
requirements of the room with the unit operating at the low fan
speed.
(continued...)
OPTIMO
been placed or installed in its normal
operating position and they have
been given supervision or instruction
concerning use of the appliance in a
safe way and understand the hazards
involved.
Children aged from 3 years and less
than 8 years shall not plug in, clean
the appliance or perform user
maintenance.
l OPTIMO
® is supplied with integral controls including fan speed
selector and summer/winter switch.
l In heating mode a low limit thermostat prevents the fan from
operating if the heating system water temperature is below
32°C.
l In summer mode the fan can be operated to circulate a flow of
air without any heat supply.
3. The system water must be above 32°C for fan to switch on.
Performance will depend on the water temperature at the coil
and the flow through the coil.
4. This unit is NOT suitable for one-pipe systems.
5. Optimum performance will require effective balancing of the
whole system.
6. This unit must not be used to replace a radiator in an existing
system unless an adequate flow of water can be guaranteed.
l The higher fan speed can then be used for more rapid
heating from cold in extreme conditions.
500, 600 & 800 03
®