2
INTRODUCTION
GENERAL INFORMATION AND
SAFETY INSTRUCTIONS
IF YOU SMELL GAS:
- Immediately shut off the gas supply.
- Ventilate the boiler room.
- Do not use electrical appliances and do not switch anything on or
off.
- Immediately notify your gas company and/or your installer.
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.
(See
also the list of faults on page 16)
Only genuine factory parts may be used as replacement parts.
Please go to page 22 for a list of spare parts and their ACV
reference numbers.
Note: ACV reserves the right to change the technical characteristics
and specification of its products without notices.
USING THE BOILER
Starting the burner
During operation, the burner starts automatically as soon as 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.
Heating system pressure
From time to time you may need to top up the heating
system pressure. This pressure is indicated by the combined
temperature and pressure gauge on the boiler control panel.
The minimum pressure when the boiler is cold should be 1 bar.The
precise operating pressure required depends on the height of the
building, and your installer will have informed you of this value at the
time of installation
(see Commissioning Section - Filling the hot water and
heating circuits)
.
If the pressure falls below 1 bar, the boiler water pressure switch will
turn the boiler off until pressure is restored.
To re-pressurise, the system needs to be topped up with water.
First, switch the boiler OFF on the on/off switch and isolate the
external electrical supply. The fill valves A and B are located at the
rear of the HeatMaster
®
(
see photo A and B below).
Open both valves
and allow thesystem to fill. When the combined temperature and
pressure gauge shows the required pressure, close both valves.
Replace the casing top front panel. Restore the power supply and
switch the boiler on.
Safety Valves
If water discharges from any of the safety valves, switch the boiler
off and call a service engineer.
Main switch
Summer/Winter switch
Thermostat-pressure gauge
Display – MCBA controller
AB
