Monza 24 and 28 Instructions for use - Heatline
Monza 24 and 28 Instructions for use - Heatline
Monza 24 and 28 Instructions for use - Heatline
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General<br />
This boiler is designed <strong>for</strong> <strong>use</strong> as part of a sealed water central<br />
heating system with fully pumped circulation. The pump,<br />
expansion vessel <strong>and</strong> associated safety devices are all fi tted<br />
within the boiler.<br />
Safety valve<br />
The safety valve is an integral part of the boiler <strong>and</strong> it cannot<br />
be adjusted. The pipe from the safety discharge valve must<br />
discharge safely in accordance with st<strong>and</strong>ards.<br />
• Ensure all cleanser is removed from the whole system be<strong>for</strong>e<br />
adding an inhibitor.<br />
For long-term corrosion protection after fl ushing, an inhibitor<br />
suitable <strong>for</strong> stainless steel heat exchangers can be <strong>use</strong>d. Either<br />
Sentinel X100 or Fernox F1 inhibitor can be <strong>use</strong>d.<br />
The boiler is suitable <strong>for</strong> <strong>use</strong> on systems using softened water.<br />
7.3 Dimensions<br />
Expansion vessel<br />
130<br />
The boiler has an integral expansion vessel with a capacity of 8<br />
litres (1.76 gallons), with a charge pressure of 0.75bar.<br />
The heating system volume should be calculated to<br />
ensure that the expansion vessel is suitable, it may<br />
be necessary to add an additional vessel.<br />
- In GB, Guidance on vessel sizing is also given in the current<br />
issue of BS5449 <strong>and</strong> BS7074 Part 1.<br />
740<br />
- In IE, current edition of I.S.813 “Domestic Gas Installations”.<br />
Bypass<br />
The boiler is fi tted with an automatic bypass.<br />
425<br />
<strong>24</strong>kW=310<br />
<strong>28</strong>kW=340<br />
• Ensure that under no circumstances does the fl ow rate drop<br />
below the fi gure specifi ed, refer to chapter "Technical data".<br />
Filling the sealed system<br />
Suitable external fi lling systems are shown diagrammatically,<br />
see diagram - Heating circuit design.<br />
The system should be pressurised to 1.0bar, indicated on the<br />
digital display with no heating dem<strong>and</strong>.<br />
7.4 Mounting<br />
• Make sure that the equipment <strong>use</strong>d <strong>for</strong> implementing the<br />
installation is compatible with that of the appliance.<br />
• Determine the assembly location. See the "Appliance<br />
location" chapter.<br />
Drain points<br />
Drain taps must be provided at all low points of the system,<br />
which will allow the entire system to be drained.<br />
Drain taps shall be to the current issue of BS<strong>28</strong>79.<br />
Water treatment<br />
Existing system- It is essential that prior to installing the new<br />
boiler the system is thoroughly fl ushed.<br />
New system- For optimum per<strong>for</strong>mance after installation, the<br />
boiler <strong>and</strong> its associated central heating system should also be<br />
fl ushed.<br />
Flushing shall be carried out in accordance with BS 7593, a<br />
chemical cleanser can be <strong>use</strong>d either Sentinel X300, X400 or<br />
Fernox F3 are suitable.<br />
It is recommended to fl ush existing systems fi rst be<strong>for</strong>e fi tting<br />
the new boiler.<br />
- 10 - Service Call 0844 736 9042, Technical Help (Chargeable) Call 0906 802 0253
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