Dirt Separator/Strainer; Air Separator; Roof-Top Installation; Installation Schematic Drawings - Lochinvar CP-M Series Installation, Commissioning & Maintenance Instructions

10.5

DIRT SEPARATOR/STRAINER

Due to the high-efficiency, low water content design of the heat exchanger, it is necessary to install a method of removing dirt
from the system. A dirt separator or strainer should be installed in the system return line and checked on a weekly basis to
ensure an adequate flow is maintained whilst ensuring that the heat exchanger does not get blocked.
Where a strainer is used, it is recommended that isolation valves are installed either side of the strainer and a bleed point is
installed to aid in the routine maintenance.
Blockage of the heat exchanger due to the ingress of debris from the system is not a manufacturing defect and is not
covered by the warranty.
10.6

AIR SEPARATOR

When a CP-M+ boiler is installed on a heating system containing iron, oxygen in the water can react to form the mineral
magnetite. Due to the highly magnetic nature of magnetite, the mineral can create flow restrictions in the heat exchanger, which
may result in premature failure.
When installing a CP-M+ boiler the system must be fully flushed to remove all existing traces of magnetite and an air separator
should be fitted to prevent any further development.
The air separator should be installed in the hottest part of the heating system, i.e. on the flow out of the low velocity header, and
in accordance with the item manufacturer's instructions.
10.7

ROOF-TOP INSTALLATION

If the CP-M+ boiler is to be positioned at the highest point of the installation, the system flow and return pipes must rise a
minimum of 0.5m above the top of the boiler, before re-directing to the desired locations within the building to ensure a minimum
water level is maintained within the boiler. A low-water level protection device should also be installed within the system.
10.8

INSTALLATION SCHEMATIC DRAWINGS

The following schematic drawings are for guidance purposes only.
Alternate installation schematic drawings are available; please visit www.lochinvar.ltd.uk.
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