Heatrae Sadia ELECTROMAX User manual

User’s Instructions 1
USER’S INSTRUCTIONS
1.0 INSTALLATION AND HAND
OVER
When your Electromax was installed the
installer should have fully commissioned
the system and left it in working order.
Any panels or covers should have been
replaced and secured. Following this he
should have explained the system, its
function and control including:
a. DHW supply –
Explained how the complete cylinder
is only heated by Off-Peak electricity.
Explained how a one hour DHW
boost can be obtained if a day time
top up is required.
b. Central Heating –
Explained how the central heating
system works.
Explained the operation of the
Programmable Room Thermostat
and the settings that have been
programmed.
Explained how the Programmable
Room Thermostat can be over-
ridden if required.
c. System malfunction –
Explained what to do if the system
malfunctions or the “Alarm”
indicators are illuminated.
Explained how to isolate the
electrical supplies or water supply in
the event of a system fault.
d. System maintenance –
Explained the necessity for
the system to receive regular
maintenance to ensure its continued
safe and efcient operation.
e. Literature –
Handed over the Electromax
Installation Instructions and the
Danfoss TP 5000 Installation and
User Instructions.
The following leaet further explains a
number of the above points and should be
retained as a reminder of how to operate
the Electromax models and look after the
system for trouble free operation. If you
are in any doubt, please ask your installer
for clarication or contact Heatrae Sadia
Heating. Useful contact numbers are listed
on page 7 of this leaet.
2.0 HOW YOUR ELECTROMAX
WORKS
2.1 General description
The Electromax is a combined electric
central heating boiler and unvented storage
water heater. The electric boiler provides
heat to the water that is pumped around
the radiators / underfoor heating system
in your property thus warming it up. The
water heater operates independently to the
boiler and provides a full tank of domestic
hot water heated by Off-Peak electricity.
Should this hot water store be fully used a
“Boost” element is tted to provide a smaller
quantity of water in a shorter time. This can
be used any time needed as it works off a
24 hour electrical supply.
2.2 Control of the central heating
The central heating operating times
and temperatures are controlled by the
Programmable Room Thermostat which
will be sited remotely from the Electromax.
It may be used in conjunction with
Thermostatic Radiator Valves (TRV’s)
which control the temperature of individual
rooms, however a TRV must not be
placed on the radiator in the room where
the Programmable Room Thermostat is
located.
Combined Electric Flow Boiler
and Direct Unvented Water Heater

2 User’s Instructions
When the Programmable Room Thermostat
is in a heating period and the room
temperature is below that set it will switch
on the Electromax boiler to heat the
radiators and raise the room temperature.
2.3 Central & Underooring Heating
The Electromax boiler works as part of
a “sealed” pressurized central heating
system. The unit is tted with a pressure
gauge which will indicate the operating
pressure of the system. Within the unit all
necessary safety and functional controls
are factory tted.
The boiler is tted with a sophisticated
electronic control which will adjust the heat
input to the water circulated around the
radiators to maintain them at an optimum
temperature. Safety functions will shut the
boiler down in the unlikely event of a fault.
2.4 Hot water
The water heater tted in the Electromax
is an unvented cylinder which gives the
benet of high pressure water to all hot taps
and outlets connected to the unit. It requires
no cold water feed cistern, ow from the
hot outlets is governed by the mains water
pressure.
The bulk of the hot water will be heated
by cheaper “Off-Peak” electricity. This will
generally happen over night to give a full
tank of hot water for use during the day. If
the hot water store is fully used a “Boost”
element is provided to heat a smaller
quantity of water in a quicker time, typically
in less than an hour.
The water heating function operates
independently of the central heating boiler
so the boiler can be switched off during
summer months without affecting the hot
water performance.
3.0 ELECTROMAX CONTROL
FUNCTIONS
Refer to Diagram 1 to help you identify
the various features and functions of the
Electromax controls panel.
3.1 Hot Water “On” switch
Switches on the electrical supply to the
water heater. When in the “on” position the
switch is illuminated. With the switch in the
“on” position the water heater will heat up
whenever an “Off-Peak” electrical supply
period is available.
3.2 Hot Water “Boost” switch and
indicator
Switches on the electrical supply to the
“Boost” element when pressed. NOTE: the
switch does not latch in the “on” position.
When the supply to the “Boost” element is
switched on the indicator will illuminate. The
“boost” is timed to operate for a maximum
of one hour, this is sufcient time to fully
reheat a smaller “boost” volume of water.
The “Boost” element cannot be switched on
if the Hot Water “On” switch is in the “off”
position.
3.3 Central Heating “On” switch
Switches on the electrical supply to the
boiler to provide central heating. When in
the “on” position the switch is illuminated.
With the switch in the “on” position the
operation of the boiler will be controlled by
the times set on the Programmable Room
Thermostat.
3.4 Boiler Status Display
DEMAND / OVERHEAT
When illuminated GREEN this indicator
indicates that there is a heating demand for
the central heating from the Programmable
Room Thermostat. It will ash for
Hot Water
“On” Switch

User’s Instructions 3
approximately 2 to 3 minutes whilst the
boiler undergoes a series of self diagnostic
tests. When the indicator glows steady
green it indicates that the boiler is heating.
When ashing RED at the same time as the
ALARM indicator it indicates that there has
been an over-heat fault on the system.
HEAT
This indicator will illuminate GREEN as the
boiler produces heat. It will show the degree
of heat being applied, it will only be fully
illuminated when the boiler is on full power
output. As the boiler adjusts its power
output to the heating demand (modulating)
the indicator will alter in intensity.
ALARM
This indicator will ash RED when there
is a problem with the boiler. If ashing
alone there is a water ow problem, if
ashing at the same time as the DEMAND/
OVERHEAT indicator ashes RED there is
an over-heat problem.
The boiler will not operate until the problem
has been rectied and reset. Contact
your installer or Heatrae Sadia Service
Department if a fault ALARM occurs.
FLOW TEMP
This adjuster alters the boiler ow
temperature. It will normally have been set
to its optimum position during installation. At
its minimum position (- fully anticlockwise)
the boiler ow temperature is set at 65oC; at
its maximum position ( + fully clockwise) the
boiler ow temperature is set at 80oC.
3.5 Central Heating System Pressure
Gauge
This will show the pressure in the heating
system. The minimum system pressure
should be 1.0 bar. If lower than this gure
the system may have a leak or have
discharged water from the safety valve due
to a fault. This will need to be investigated,
rectied and the system re-pressurised. The
maximum system pressure is 3 bar. If when
heating the indicator needle on the gauge
approaches the 3 bar mark this will indicate
that the system is over-pressurising. The
reason for this should be investigated and
rectied.
In normal operation the system pressure
should be between 1 bar and 2.5 bar.
Any under or over-pressurisation problem
should be investigated by a competent
installer or service engineer.
Hot Water
“On” Switch
Hot Water
“Boost On”
Indicator
Hot Water
“Boost” Switch
Boiler Status
Display
Central Heating system
Pressure Gauge
Central / Underoor Heating
“On” Switch
Diagram 1 - Radiator Heating model pictured

4 User’s Instructions
4.0 PROGRAMMABLE ROOM
THERMOSTAT
Overall control of the Central Heating
will be performed by the Programmable
Room Thermostat. The device supplied
with the Electromax is manufactured
by Danfoss and is supplied with its
own Installation Instructions. Its basic
functions are described below, refer to
the Danfoss leaet for further details.
4.1 Programme settings
Your installer should have set the
programmer to give suitable time and
temperature control of your central
heating. These settings should, wherever
possible, take advantage of any day time
“Off-Peak” electricity supply periods. It
can be programmed to give 6 time and
temperature events each day. One set of
times can be set for weekdays and another
for weekends.
The unit is a “temperature set back”
programmer. This means that when you
do not want the heating to be on, a lower
“set back” temperature is programmed.
Rather than completely turning the boiler off
during these periods, if the lower “set back”
temperature is reached the boiler will switch
on to maintain the temperature at this lower
point until the next heating time period is
reached.
4.2 Altering programmes
4.2.1 Setting the Clock and Day
a) Open the front ap on the front
of the programmer. Press the
+ & - and the & buttons
simultaneously to reset the
programmer to the factory
settings. The time will show 12:00
and day 1 will be indicated.
b) Press the PROG button.
c) Using the + and – buttons adjust
the time to the correct time of
day. (Holding the buttons down
will change the time in 10 minute
increments).
d) Press PROG again.
e) Using the + and – buttons until
the correct day is shown (1 =
Monday, 2 = Tuesday, etc.).
4.2.2 Setting the programmes (Days 1 to
5 – weekdays)
a) Press PROG until the rst pre-
set time and temperature (Event
1 Days 1,2,3,4,5) shows in the
display
b) Using the + and – buttons adjust
the time until the required start
time is selected.
c) Using the and buttons
adjust the temperature required
for the rst event.
d) Press PROG to move to the next
pre-set time and temperature
(Event 2).
e) Repeat the steps in b), c) and
d) to set the required times and
temperatures for each Event
(up to six are possible). Note:
to retain the pre-set time and
temperature just press PROG
again to move to the next event.
4.2.3 Setting the programmes (Days 6 &
7 - weekends)
a) Press PROG until the rst pre-
set time and temperature for the
weekend (Event 1 Days 6 – 7)
shows in the display.
b) Using the + and – buttons adjust
the time until the required start
time is selected.
c) Using the and buttons
adjust the temperature required
for the rst event.
d) Press PROG to move to the next
pre-set time and temperature
(Event 2).

User’s Instructions 5
e) Repeat the steps in b), c) and
d) to set the required times and
temperatures for each Event
(up to six are possible). Note:
to retain the pre-set time and
temperature just press PROG
again to move to the next event.
4.2.4 Running the programmes
a) When all events have been
programmed press PROG again.
b) The colon ( : ) in the display
will begin to ash. The central
heating will now be controlled
by the on/off times and set
temperatures.
4.2.5 Other functions
Other functions are available on
the programmer such as time and
temperature over-rides, different
display modes, temporary use of
weekend settings during weekdays
and a frost protection mode.
Details of how to select these can
be found in the instruction booklet
supplied with the Danfoss TP 5000
programmable room thermostat.
4.2.6 Battery Replacement
When the batteries get low a battery
symbol will ash on the display. You
will then have 15 days to replace
the battery before the unit will switch
off. If the batteries are not replaced
the display will go blank and any
programmed settings will be lost.
Your central heating will not work if
the programmable room thermostat
loses power.
When changing the batteries remove
the old batteries and replace them
with new ones within one minute to
ensure your programmed settings
are retained. If left for longer
programmed settings will be lost and
will need to be reset when battery
power is restored.
Only use high quality alkaline
batteries. The unit uses two AA/
MN1500/LR type batteries. Ensure
the batteries are installed correctly (
+ to +, - to - ).
5.0 THINGS TO BE AWARE OF
5.1 System Pressure
The Central Heating System Pressure
Gauge (see Diagram 1) will indicate the
actual water pressure within the central
heating system. When the system is cold
the pressure should be between 1.0 and
1.5 bar. On switching on the heating a
small drop in system pressure may be
noted, but the pressure will then rise as the
system heats up. When fully hot the system
pressure may be up to 2.5 bar.
If the system pressure drops below 1.0 bar
it will require topping up. To do this rst turn
off the electrical supply to the Electromax.
DO NOT REMOVE ANY COVERS
UNLESS THE ELECTRICAL SUPPLY
IS ISOLATED – AN ELECTRIC SHOCK
HAZARD MAY OCCUR. Pull the lower front
panel forward using the nger holds in the
sides of the panel. Connect the Filling Loop.
Open the Filling Loop Isolating Valves and
allow system to re-pressurize to between
1.0 and 1.5 bar. Close the Isolating Valves,
disconnect the Filling Loop and ret lower
front panel.
If regular topping up is required it may
indicate a fault or a leak within the
system – contact a competent installer
or service engineer to check.
Severe loss of pressure may result in the
boiler entering an ALARM mode. If this
happens the boiler will need to be reset.

6 User’s Instructions
This should only be done by a competent
installer or service engineer, following the
rectication of the fault.
5.2 Frost protection
If you are leaving your home un-occupied
during colder periods it is possible to stop
the Electromax heating the home un-
necessarily, but protect it if the temperature
falls to a very low level for any length of
time. This is done by leaving the Central
Heating “On” switch in the on position
(illuminated green) and over-riding the
normal programmes on the Programmable
Room Thermostat.
To do this press the and buttons
together twice. The time indication will
disappear and the colon ash. Press the
button until 5o and a snowake symbol are
shown to the right of the ashing colon. In
this mode the central heating will be turned
on if the room temperature drops below 5°C.
To return the Programmable Room
Thermostat to your programmed times and
temperatures press the and buttons
together again.
5.3 Safety Valve discharge
There is a viewing window located on
the upper front panel of the Electromax
through which any discharge from the
safety valves can be observed. If water is
seen to discharge from any of the safety
valves tted to the Electromax switch off
the Water Heater and the Central Heating
boiler. DO NOT turn off the water supply.
Contact a competent installer or service
engineer to check the system.
DO NOT tamper with any safety valves
tted to the Electromax system, if a
fault is suspected contact a competent
installer or service engineer.
Discharged water may be very hot. DO
NOT touch discharge pipes when water
is owing through them or place hands
or ngers under the discharge water.
5.4 Cleaning
The outer casing can be wiped down with
a damp cloth to remove any marks. Do not
use abrasive cleaning agents as they may
damage the nish of the casing parts.
5.5 Programmable Room Thermostat
The Programmable Room Thermostat
supplied with the Electromax is
manufactured by Danfoss. The User
Instructions provided with this control
should be followed.
5.6 Other controls
Other controls may have been tted to your
system during installation, for example
Thermostatic Radiator Valves. Instructions
for use of these controls should have been
provided by the installer.
6.0 IN AN EMERGENCY
The following steps will not rectify any
faults that have caused the product to
malfunction, but will render it safe until
the problem is resolved by a competent
installer or service engineer.
6.1 Electricity
Should an electrical supply fault be
suspected all electrical supplies to the
Electromax should be switched off. Within
the electrical supplies to the unit should be
a number of isolating switches, the location
of these should have been pointed out to
you by your installer on hand-over.

User’s Instructions 7
The electrical supplies should also be
switched off at the consumer unit Mains
Circuit Breakers (MCB’s).
Never open the casing to the unit
without rst disconnecting ALL
electrical supplies to the unit.
6.2 Central Heating system
If a radiator, any part of the underoor
heating pipework, central heating pipe or
the boiler starts leaking turn the Central
Heating switch to the “Off” position (green
switch not illuminated). Open the lower front
panel of the Electromax and turn the central
heating isolating valves (see Diagram
below) to the off position. This will minimize
the loss of water from the system.
7.0 CONTACTS
When contacting Heatrae Sadia Heating
please have the Serial Number and Mod-
el Name to hand. This will aid us in deal-
ing with your query. This information
can be found on the data label located
on the front face of the water heater in-
sulation and can be seen when the front
panels are removed. DISCONNECT ALL
ELECTRICAL SUPPLIES WHEN REMOV-
ING ANY COVERS.
ADDRESS
Heatrae Sadia Heating
Hurricane Way
Norwich
Norfolk
UK
NR6 6EA
SERVICE
Tel: [phone]
Fax: [phone]
E-mail: heatraesadiaservice
@heatraesadia.com
6.3 Water Supply
If a cold water pipe supplying the
Electromax or a hot water pipe connected
to the unit starts to leak turn off the “Hot
Water” switch (green switch not illuminated)
and turn off the mains water supply to the
Electromax. Collect any water leakage in a
suitable container. Note: this water may
be very hot, take suitable precautions.
Central heating
isolating valves

8 User’s Instructions
8.0 TIPS FOR ECONOMIC USE OF
THE SYSTEM
8.1 Central/ Underoor heating
Check that the Programmable Room
Thermostat is programmed to take
advantage of any day time “Off-Peak”
electricity periods (see Table below).
Set the temperature required to a
comfortable level, over–heating and
consequent over compensation to cool the
room temperature wastes power.
Review your central heating times – don’t
programme a heating period when the
property is unoccupied. The Programmable
Room Thermostat has various over-ride
functions that can be useful if the normal
programmed periods are not required.
Lower the boiler ow temperature (see
Electromax Controls section) to give
adequate heating to maintain comfort
levels.
8.1.2. Central heating only
If not already provided t Thermostatic
Radiator Valves (TRV’s) to radiators in
rooms other than where the Programmable
Room Thermostat is tted. Set an
appropriate temperature for the room use,
for example bedrooms should have a lower
temperature than living areas.
8.2 Hot water
Avoid supplying hot water to appliances
such as washing machines or dishwashers.
It is more economical to install “cold ll”
appliances and have them heat the water
used to its optimum temperature within the
appliance. Even lower running costs can
be achieved if these can be programmed to
run on “Off-Peak” times.
Avoid excessive use of the Boost element
as this will generally not be using “Off-Peak”
electricity. Be aware of when the day time
“Off-Peak” periods are as the water heater
will automatically reheat during those times
if the thermostat is calling for heat. Check
your electricity supply bill for details of your
tariff and then refer to the Table below. A
small adjustment to your lifestyle patterns
can have a big inuence on your system
running costs.
The pace of product development is such that we reserve the right to change product
specications without notice. We do, however, strive to ensure that all information in this
leaet is accurate at the time of publication. Electricity tariff information is compiled from a
number of different energy suppliers and may be subject to change.
A B A X I G R O U P Company
36005919_issue_04
ECONOMY 10 PROVIDERS
Electricity Supplier Off-Peak Times GMT or Clock
Midlands midnight - 5.00am 1.00 - 4.00pm 8.00 - 10.00pm GMT
Norweb midnight - 5.00am 1.00 - 4.00pm 8.00 - 10.00pm GMT
Southern midnight - 5.00am 1.00 - 4.00pm 8.00 - 10.00pm GMT
South Wales midnight - 5.00am 1.00 - 4.00pm 8.00 - 10.00pm GMT
South Western midnight - 5.00am 1.00 - 4.00pm 8.00 - 10.00pm GMT
Yorkshire midnight - 5.00am 1.00 - 4.00pm 8.00 - 10.00pm GMT
Scottish Hydro 4.30 - 7.30am 1.00 - 4.00pm 8.30 - 12.30pm Clock
Manweb 4.30 - 7.30am 1.00 - 4.00pm 8.30 - 12.30pm Clock