Electrical Supply; External Controls - Lochinvar ECOKNIGHT EKW116CE Installation, Commissioning, Maintenance And User Instructions

16.0 ELECTRICAL SUPPLY

Wiring external to the equipment must be installed in accordance with the I.E.E. Regulations and any local regulations that
apply.
Model
EKW116CE
EKW146CE
EKW176CE
EKW206CE
EKW236CE
16.1.1
ELECTRICAL SUPPLY REQUIREMENTS
Warning: this appliance must be earthed
A suitably competent person must check wiring. Normal supply required is 230 volts ac, single phase,
50 hz. An isolator with a contact separation of at least 3mm in all poles should be sited close to the
equipment and must only serve that equipment. The double pole switch must be readily accessible
under all conditions

EXTERNAL CONTROLS

The EcoKnight™ Water Heater utilises the same control board as that used in the Herald boiler, as such some of the features shown
will not work. EcoKnight can be controlled via a BMS system utilising a simple on/off arrangement. The Water Heater has the following
inputs/outputs:
Building Management System (BMS) 0-10VDC analogue input

Volt-free "burner on" (runtime) signal

Volt-free "lock-out" (alarm) signal

0-10V "burner firing rate"

 0-10V "Water Heater pump speed"
24VAC auxiliary device enable signal (e.g. to start fan dilution system)

The EcoKnight™ Water Heater is also compatible with the following control and safety systems allowing the Water Heater to operate
as a complete standalone system. See the relevant sections within Section 21.0 for details of programming the various functions
required for a standalone system.
Storage vessel sensor (modulating type)

Internal Cascade control

Gas pressure switch (e.g. gas booster under pressure/over pressure safety switch)

Water flow proving device (e.g. differential pressure switch or flow switch)

Auxiliary safety system proving switch (e.g. fan dilution system proving switch)

Lochinvar have developed the EcoKnight water heater to operate at its most efficient when using the
internal sensors and cascade control, if it is the intention to use a BMS to control the EcoKnight water
heater then Lochinvar must approve the general scheme of control prior to installation.
Normal Supply Voltage
230V AC 1PH
External Fuse Rating
6.0 A
Power Consumption
180 W
204 W
322 W
322 W
322 W
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