1.1 Introduction
The Powrmatic OUH Range is a range of oil fired forced
draught, closed flue, fanned circulation air heaters having
an output range of 20kW to 60kW .
The heaters are designed for suspension from suitable
roof points, or alternatively mounted on purpose designed
wall brackets, and are intended for heating commercial or
industrial premises.
The OUH-F has an axial type fan assembly fitted at the
rear of each heater to circulate the air being heated
across the combined combustion chamber/ heat
exchanger. A centrifugal fan variation is presented in the
OUH-C range for ducted applications. The OUH-D range,
in having no fan fitted, allows for ducted use where the air
moving unit is remote from the heater.
All units are fired with a forced draught packaged oil
burner complete with all necessary safety controls. Each
air heater must be connected to an individual closed flue
system only.
Fuel Types
All units are supplied as standard for use with 35sec fuel
and can be supplied for use with 28sec fuel as an option.
In accordance with guidelines from our burner supplier,
Riello, the burners fitted to Powrmatic oil-fired heaters are
suitable for fuels with a bio content of up to 10% only.
For fuels with a bio content of more than 10%, please
consult our Technical Department.
IMPORTANT
Service and Maintenance Engineers shall ensure
that replacement items are fitted, adjusted and
set in accordance with the data and detail set out
in these instructions. If in doubt consult P o w r -
matic Technical Department.
OUH Range Users, Instrucons & Service Instrucons Issue 5.1 September 2015 Page 5
Note: The limit thermostat interlock relay will
require resetting after loss of the electrical supply
to the heater regardless of whether the limit
thermostat has operated.
Limit Thermostat
F) Fan and Limit Control
Regular servicing is essential to maintain efficient, reliable
and safe operation of the heater. Users are strongly
recommended to have the heater serviced by a qualified
person at least annually and preferably at the end of the
heating season.
G) IMPORTANT
Free access must be maintained to and around
the heater for servicing purposes and the air
supply to the heater must not be restricted in any
way. Combustible materials must not be stored
adjacent to the heater.
All Powrmatic OUH heaters use oil and electricity
to power them, they may also contain moving
parts such as pulley belts.
It would be hazardous to tamper with or attempt
to service unless you are a competent person in
the field of Oil and Electrical work.
If you have any safety questions reference the
servicing and installation of any of our heaters
please do not hesitate to contact our head office
for expert advice.
Your safety is paramount to us.
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