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OUH Range Users, Installation & Servicing Instructions Doc Ref M105 issue 5.8 Apr 2020.
When the unit has cooled push the reset switch on the
front of the heater to reset the limit thermostat interlock
relay, the red indicator light will go out and the unit is
operational again.
NOTE: The limit thermostat(s) can only be
reset once the unit has cooled down. Unless
the cause of the fault condition is readily
obvious, for example a power cut whilst the
heater was operating, a service engineer
should be contacted.
E) Maintenance
To maintain efficient, reliable and safe operation of the
heater it must serviced annually by a qualified person
Regular servicing is essential to maintain efficient, reliable
and safe operation of the heater. Users are strongly
recommended to have the heater serviced at least
annually and preferably at the end of the heating season.
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.
IMPORTANT
All Powrmatic heaters use either gas or oil
plus electricity to power them, they may also
contain moving parts such as pulleys and
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.
User Instructions
Fuel Types
Oil fired units are supplied as standard for use with
certified Gas Oil to BS2869 Class A2 or D, (also referred to
as 35 sec Oil’ or ‘Red Diesel’) and can be supplied for use
with Kerosene to BS2869 Class C2, (also referred to as
‘28 sec Oil’). as an option.
IMPORTANT: Powrmatic are not able to
confirm the suitability of any alternative
blended Industrial Heating Oil (IHO) used to
fuel their appliances and as such will affect
the warranty on the appliance.
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 Powrmatic Technical Department.
1.1 Introduction
belts. It would be hazardous to tamper with or attempt to
service unless you are a competent person in the field of
Gas and Electrical work.
Danger: Electricity
Warning: Flammable Materials
Warning: Hot Surfaces
Warning: Contains Moving Parts
Read and understand this Service Manual
Instructions before operating or servicing
this appliance
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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