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INTRODUCTION USER GUIDE
USING THE BOILER
It is compulsory to have your system serviced every
year by a competent engineer. In the event of heavy
use of the boiler, it may require servicing on a more
regular basis than once a year. In this case, contact
your installer for advice.
Starting the burner
In conditions of normal operation, the burner starts automatically if
the temperature of the boiler is below the set point and goes off
when this value is reached.
Control panel
The user must not attempt to gain access to the
components inside the control panel.
1. On/Off switch
This turns the HeatMaster on or off.
2. Control thermostat - 60 to 90°C
When using the HeatMaster
®
as a hot water generator only, the
temperature can be set between 60°C and 90°C.
If the HeatMaster
®
is used for both hot water and central heating, the
control thermostat would normally be set at 80°C to achieve optimum
operating conditions.
3. Summer/Winter switch
This turns the heating pump
(if fitted) on or off.
4. Manual reset high limit thermostat
If the boiler temperature exceeds 103°C this safety device will
activate and the high temperature indicator will light up. To reset -
first allow the boiler to cool to below 60°C, unscrew the cap and
press the reset button using a pencil or similar pointed device,
replace the cap. If the fault persists, turn the boiler off and call an
engineer.
GENERAL INFORMATION
AND SAFETY INSTRUCTIONS
General information
This documentation forms part of the items delivered with the
appliance and must be given to the user to keep in a safe place!
This appliance must be serviced and repaired by an approved
installer, in accordance with current standards in force.
ACV declines all liability for any damage caused as a result of
incorrect installation or as a result of the use of components or
connections that are not approved by ACV for this application.
Temperatures
This boiler is designed for central heating systems
with a maximum outlet temperature of 90°C.
Therefore, the central heating pipelines and the
radiators must reach this temperature.
The waste-gas pipe lines must reach
temperatures in excess of 100°C.
The hot water can reach temperatures in excess
of 60°C.
Installation
Before installing and commissioning the boiler, first
carefully read this manual.
Position the HeatMaster
®
according to the safety rules and
standards in force. You must comply with the ventilation
requirements for the room where appliances of this type are
installed. All air vents must remain unobstructed at all times.
It is prohibited to modify the interior of the appliance in any way,
without the manufacturer’s prior written agreement.
Service
In order to ensure the appliance operates safely and correctly, it is
important to have it serviced and reconditioned every year by an
installer or an approved service company.
Faults
Despite the strict quality standards imposed on its appliances by
ACV during production, inspection, and transport, faults may occur.
Please immediately inform your approved installer about such faults.
Remember to give the fault code as it appears on the screen.
Only genuine factory parts may be used as replacement parts.
Please go to page 13 for a list of spare parts and their ACV
reference numbers.
Important note: ACV reserves the right to change the technical
characteristics and specification of its products without notice.
DANGER
HOT
I
O
Manual reset high
limit thermostat
Burner
lockout
indicator
Combined temperature
and pressure gauge
Time clock
Control
thermostat
ON / OFF
switch
Primary circuit low
water pressure
indicator
High limit cutoff
indicator
Summer / Winter switch