Elnur CM15BG, Инструкция по установке и руководство пользователя

Страница: 8 / 24

7
Filling loop
Always use assistance if required. Wear suitable cut resistant gloves when handling the appliance.
Ensure safe lifting techniques are used. Do not lift the appliance by attached pipe-work or components.
When lifting the boiler ensure that the fixing elements and the wall have a sufficient load-bearing capacity. Check the
quality of the wall.
4.7 WATER CONNECTIONS
CAUTIONThe hydraulic connections must be carried out respecting the flow and return marked on the boiler.
CAUTION When tightening or loosening threaded connections, always use suitable tools as open-end
spanners. Do not use pipe wrenches, extensions or unsuitable tools that may cause damage or water leaks.
Install purges in the radiators and high points of the installation.
Filling Loop
A combi filling loop is required for filling of the heating system and replacing water lost during servicing or bleeding
and should be installed close to the boiler. The loop should be as shown in the diagram and comply with current
Water Supply Regulations. The temporary connection should be removed after filling and the valves sealed with
suitable caps.
Heating Flow & Return
These connections are ¾ “ for connection to 22mm pipe using the tails provided. Service valves should be installed
at this position to allow the boiler to be isolated for maintenance without the need to drain the entire system. The
valves should be of sufficiently large bore so not to restrict the heating circulation.
The boiler is not suitable for single pipe heating systems, only a twin-pipe heating system should be used.
Drain Point
A drain point should be fitted at the lowest point of the system. It is not acceptable to drain the boiler through the
safety valve as debris and deposits will prevent correct operation of the valve.
Heating System By-pass
The heating water flow switch requires a minimum flow rate through the boiler of 7 L per minute for correct
operation. Systems fitted throughout with Thermostatic Radiator Valves will require provision of a System By-pass
to maintain sufficient flow should all the valves be closed. (see 7.3 HEATING SYSTEM FLOW SWITCH – E3 ERROR
& SYSTEM BY-PASS REQUIREMENTS).
System Expansion
An integral 6 L expansion vessel provides for expansion of the heated system water under normal conditions
however a system with larger volumes of water may require extra expansion capacity to be provided.
i
Mains water
supply Heating
system
valve valve