© Ecotec Heat Pumps Ltd
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Installation Manual & User Guide
12
Tips to increase savings
The lower you can keep the temperature of the
radiators in the house, the better your heating
economy. So make sure not to set your thermostat
too high. Run your heating system as efficiently as
possible by making sure that the entire surface of
your radiators or your in-floor heating coils are
kept hot. Thermostatic valves on your radiators or
floor heating may have a negative effect on your
heating system because they restrict the flow so
that the system has to compensate with a higher
water temperature. If thermostat valves are fitted,
they should be fully opened, except in bedrooms,
where they can be turned down slightly.
Important points to check
For optimum heat pump performance, it is
important to check the flow on the water out (hot
side) of the heat pump. The circulation pumps
usually have a speed selector switch; this must be
set correctly for the pressure drop in the systems.
The recommended temperature difference across
the heat pump on the hot side is 7 °C. The nominal
flows stated in the Technical data section gives a
difference of 5 °C in the +7/45 °C operating
condition. The easiest way to check this is to us an
electronic thermometer. The flow through the
radiator system must be high enough to guarantee
that the entire surface of the radiators is kept hot.
This maximizes the heat-radiating surface and
keeps down the flow temperature from the heat
pump. After testing, vent the system again and top
up with fresh water if necessary.
Fan control
Three step fans are controlled by a pressure switch
on the refrigerant circuit. This can be adjusted if
necessary to ensure the high speed is engaged with
a low outdoor temperature.
Defrosting principle
The principle of defrosting on the Ecotec EAS heat
pump is known as hot gas defrosting. The heat
pump automatically defrosts your heat pump. You
do not have to be involved. It involves the reversal
of the flow in the refrigerant circuit using an
electrically-controlled four-way valve. The
compressed gas from the compressor is led into the
evaporator, causing the ice on the outside to melt.
During this process, the temperature or water is
cooled slightly. As mentioned, the defrosting
process is controlled automatically by a defrosting
module, which measures the refrigerant
temperature and starts the time controlled interval
between each defrosting phase. The time required
for defrosting depends on the amount of ice and the
outdoor temperature.
Strictly as an example guide, minus 10
o
C can take 3-
4 minutes.
Do not rely upon this guide as being
accurate. It is to give you an example defrosting
time. Different temperatures and conditions
coupled to individual temperatures desired by the
user or dwelling will alter these guide times; longer
as well as shorter should be expected.
Warranty Notice
Improper installation resulting in blocked air flow to unit, or items placed in front of air Intake vents will result in voided warranty.
Improper venting of exhaust air could cause the unit to ice up if cold air cannot escape as per system design.
Only an authorised Ecotec Service Technician is allowed to service the equipment. Any work carried out by an un-authorised
technician may result in a voided warranty. Please contact your Dealer for authorised service technician.
