Water Quality; Electrical Anode Protection System; Location; Plant Room Requirements - Lochinvar LBF81 Installation, Commissioning & Maintenance Instructions

Department of Health memorandum HTM 04-01
Manufacturer's notes must not be taken in any way as overriding statutory obligations.
5.0

WATER QUALITY

Water supply quality may adversely affect the efficiency and performance of water heaters and hot water systems.
The situation can intensify where higher temperatures or demands exist.
When installing the Lochinvar LBF in hard water areas, it is recommended that a water treatment specialist be
consulted.
5.1

ELECTRICAL ANODE PROTECTION SYSTEM

The Lochinvar LBF151 - 401 can be factory fitted with a Correx electrical anode protection system. The purpose
of this system is to protect the water tank from electrolytic attack by passing a small current from an electrode
immersed in the water to the internal surface of the vessel.
Whilst this system protects the unit from electrolytic attack, it should be noted that this is not a scale inhibiting or
reducing device.
When the protection system is working correctly, a green light should be visible on the control panel situated on
the front of the appliance. If an error occurs, this lamp will flash red. Remedial action should be taken as a matter
of urgency if such a situation arises.
It is a requirement of the Correx system that the unit is connected to a PERMANENT UNINTERRUPTIBLE
230V POWER SUPPLY. There must be no switches, including time controllers in the electrical system
other than the main isolator. Incorrect installation of the electrical supply will invalidate the warranty of
the appliance.
6.0

LOCATION

6.1

PLANT ROOM REQUIREMENTS

The Lochinvar LBF range may only be installed in a room that complies with the appropriate ventilation
requirements.
The Lochinvar LBF range can be used as a type C
ventilation allowances for combustion air are not necessary. If the appliance is to be installed in a compartment or
a hot environment, ventilation for cooling purposes must be fitted. For further guidance, please refer to Section 9:
AIR SUPPLY or to BS5440-2.
6.2

GENERAL REQUIREMENTS

Corrosion of the flue ways and flue system may occur if air for combustion contains certain chemical vapours.
Such corrosion may result in poor combustion and create a risk of asphyxiation. Aerosol propellants, cleaning
solvents, refrigerator and air conditioning refrigerants, swimming pool chemicals, calcium and sodium chloride,
waxes and process chemicals are corrosive. Products of this sort should not be stored near the water heater or
outside by the air intake. The fitting of this equipment in a situation where aerosols or other chemicals may be
entrained into the combustion air will invalidate the warranty.
The equipment must be installed on a level, non-combustible surface that is capable of adequately supporting its
weight (when filled with water) and any ancillary equipment. The operation of the equipment must not cause the
temperature of any combustible material in the vicinity of the equipment and its flue to exceed 65°C. If such a
situation is unavoidable, appropriate insulation should be provided.
Locate the equipment so that if the appliance or any connecting pipework should leak, water damage will not
occur. When such locations cannot be avoided it is recommended that a suitable drain pan be installed under the
equipment. The pan should be adequately drained but must not restrict the ventilation airflow.
, C , C appliance. Due to its room sealed design,
12 32 52
13