Features - andrews ECOflo EC230/600 Installation Manual, Operation And Maintenance Manual

FEATURES

ECOflo is the latest addition to the Andrews range
of condensing storage water heaters and is
designed for large domestic, commercial and
industrial applications.
The high efficiency units incorporate Vitraglas
silica glass lined tanks to provide protection against
the corrosive effect of hot water and therefore a
longer working life.
The condensing glass-lined ultra high thermal
efficiency storage water heater features a low NO x
pre-mix power burner that is quiet in operation, a
98% gross efficiency that keeps running costs to a
minimum and flueing arrangements that offer
unsurpassed installation flexibility.
ECOflo – A NEW STANDARD IN
CONDENSING STORAGE WATER
HEATING
The ECOflo range comprises eight models in two storage
capacities – 230/380 litres – with heat outputs ranging
from 35kW to 79kW and recovery rates of up to 1400
litres/hour through a temperature rise of 50°C.
A thermal efficiency rate of up to 98% gross puts ECOflo
at the top of the class and leads to greater economy.
In addition to outstanding performance characteristics, all
ECOflo models can be flued either vertically or horizontally
as room sealed balanced flue appliances, using
concentric flue components supplied by Andrews,
offering the ultimate in siting and installation flexibility.
All models incorporate Correx Powered (maintenance
free) Anodes as standard which substantially reduce
service time and costs. The factory fitted Hydrojet®
sediment reduction system on the cold inlet connection
helps to prevent sediment build-up at the base of the
tank, giving a longer and more efficient working life.
INSTALLATION
This water heater contains the following features:
MAIN POWER ON/OFF SWITCH
The front panel of this water heater has an illuminated
ON/OFF switch, which is lit when the main power is
turned on to indicate power to the water heater.
COMBUSTION SYSTEM
The ECOflo is equipped with a self-compensating,
negative pressure pre-mix combustion system. As the
blower operates, air is drawn in through the air intake and
into a venturi, which pulls gas from the gas valve. The gas
and air is then mixed in the combustion blower and sent
through the transition tube into the burner. The Hot
Surface Ignition System (HSI) then ignites the gas/air fuel
mixture to produce the flue products (combustion). The
flame sensor signals the ignition module, (described
below) that a flame is present.
IGNITION MODULE
® The ignition module provides the timing for the
combustion system. A sequence of operation (SOP) is
described in "Section 5 – Operating Instructions." As the
combustion system progresses through the SOP, LED's
illuminate, allowing accurate trouble-shooting should the
need arise. If a failure occurs, the system will "blink" the
LED that corresponds to the failure as described in the
"Section 6 – Troubleshooting Guide."
ADJUSTABLE THERMOSTAT
The ECOflo is equipped with an adjustable thermostat to
control water temperature. Hot water temperatures
required for kitchen sinks, sluices, cleaners' sinks and
washdown applications can cause scald burns resulting
in serious personal injury and/or death.
The temperature may be adjusted from approximately
27°C to 82°C. It is recommended that lower
temperatures be used to avoid the risk of scalding. (Refer
to the "Warnings" and the section on SCALDING in
"Section 3 – Water Connections.") It is further
recommended, in all cases, that the water temperature be
set for the lowest temperature, which satisfies hot water
needs. This will also provide the most energy efficient
operation of the water heater and minimises scale
formation.
The top immersion well of the single bulb controller also
contains the high limit (energy cut-off) sensor. The high
limit switch interrupts the main burner gas flow should the
water temperature reach approximately 93°C.
Should the high limit switch activate, it must be manually
reset. This can be accomplished by depressing the red
button on the control panel once the water temperature
of the tank has dropped below 71°C.
Please contract Andrews Water Heaters (details listed on
the Data Plate) if continued high limit switch operations
occur.
CONDENSATE DRAIN
The ECOflo is a condensing type unit and requires a drain
to be located in close proximity to allow the condensate
to drain safely. The condensate drains from the unit at the
base of the exhaust tee piece located near the bottom of
the unit. The exhaust tee is provided with a 32mm dia
connection. A condense siphon is supplied in the flue kit
which should be connected to the 32mm connection at
the base of the exhaust tee. The siphon outlet must be
connected to a 40mm dia OD plastic waste system. If the
INSTALLATION • SECTION 3
9