Electrical Supply; External Controls - Lochinvar ECOKNIGHT EKW86CE Installation, Commissioning, Maintenance And User Instructions

15.0 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
EKW46CE
EKW61CE
EKW86CE
EKW116CE
EKW146CE
EKW176CE
EKW206CE
EKW236CE
15.1.1 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
15.2

EXTERNAL CONTROLS

The EcoKnight™ Water Heater can be controlled via a BMS system either utilising a simple on/off arrangement or by
directly modulating the output. 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)

Normal Supply Voltage External Fuse Rating
230V AC
50 Hz
1 PH
Power Consumption
6.0 A
120 W
144 W
180 W
180 W
204 W
322 W
322 W
322 W
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