Legionella Prevention; Pasteurisation; Pasteurisation Using The Night Set Back Facility; Installation Noise - Lochinvar ECOKNIGHT EKW116CE Installation, Commissioning, Maintenance And User Instructions

Floor standing gas fired condensing circulating type water heater

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LEGIONELLA PREVENTION

During normal use the EcoKnight™ water heater and direct storage vessel should not pose a Legionella risk providing the vessel

temperature setting is at 60°C or above. See Section 21.4.1. The cold feed is fed into the flow and return pipework between the

EcoKnight™ water heater and direct storage vessel to prevent cold spots on the base of the direct storage vessel. Also the large

high flow shunt pump supplied with each EcoKnight™ water heater prevents temperature stratification within the direct storage

vessel.

If a pasteurisation cycle is to be used at a temperature raised above the standard set-point this can be achieved in one of three ways,

the method chosen will depend on the frequency and monitoring required. Contact Lochinvar Technical Support for further guidance.

Use the BMS 0-10v output to raise the temperature, for example 8v could be set at 60°C while 10v will set the water heater

temperature to 70°C.

Manually raise the temperature via the SMART SYSTEM CONTROL see Section 17.5.1

Use the DHW Night set back facility to automatically raise the temperature either daily or weekly.

The procedure below assumes a DHW set point of 60°C is required with a pasteurisation temperature of 70°C required.

Set the DHW tank setpoint to 70°C see Section 21.4.1

Set the Night set back offset to 10°C see Section 21.1.5

Set the Night set back times for each day to start at 01.00AM and end at 11.55PM see Section 21.1.6

This will set the water heater to operate each day between 1AM and 11.55 PM at 60°C and then the temperature will raise to 70°C

between 12AM and 1AM.

Using this function the EcoKnight™ SMART DISPLAY will show the heater is in Night set back mode

during normal working hours.

If care has been taken to follow the manufacturer's instructions, there should be no discernible noise from the equipment. The allied

pump motor may have a level of sound that could lead to consideration for acoustic insulation, but care must be taken not to impede

ventilation or airflow to the pump motor.

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