Lochinvar EcoKnight EKW60CE, EcoKnight EKW145CE, EcoKnight EKW85CE, EcoKnight EKW115CE, EcoKnight EKW175CE User & Smart System Control Manual
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The EcoKnight™ range
High Efficiency Gas Fired Condensing Water Heaters
User & SMART SYSTEM Control Guide
Models:
EKW45CE
EKW60CE
EKW85CE
EKW115CE
EKW145CE
EKW175CE
EKW205CE
EKW235CE
INS0012 Issue No 5 | August 2011
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1.0 USER GUIDE ............................................................................................................................................................................................................................................ 3
1.1 GENERAL REQUIREMENTS ........................................................................................................................................................................................................... 3
1.2 PROCEDURE FOR LIGHTING ........................................................................................................................................................................................................ 3
1.3 PROCEDURE FOR SHUTTING DOWN .......................................................................................................................................................................................... 3
1.4 TEMPERATURE ADJUSTMENT PROCEDURE ............................................................................................................................................................................. 3
1.5 MAINTENANCE ................................................................................................................................................................................................................................ 3
1.6 FROST PROTECTION ..................................................................................................................................................................................................................... 4
1.7 AIR SUPPLY ..................................................................................................................................................................................................................................... 4
1.8 CONDENSATE DRAIN ..................................................................................................................................................................................................................... 4
2.0 SMART SYSTEM CONTROL .................................................................................................................................................................................................................. 5
2.1 GENERAL ......................................................................................................................................................................................................................................... 5
2.2 SMART SYSTEM CONTROL PANEL .............................................................................................................................................................................................. 5
2.3 SEQUENCE OF OPERATION ......................................................................................................................................................................................................... 6
2.4 STATUS DISPLAY SCREENS ......................................................................................................................................................................................................... 7
3.0 USER SETTINGS ..................................................................................................................................................................................................................................... 9
3.1 GENERAL ......................................................................................................................................................................................................................................... 9
3.2 ENTERING THE USER CODE......................................................................................................................................................................................................... 9
3.3 MENU SET A: GENERAL SETTINGS ............................................................................................................................................................................................. 9
3.3.1 WATER HEATER MODEL ................................................................................................................................................................................................ 9
3.3.2 USER CODE ...................................................................................................................................................................................................................... 9
3.3.3 TIME & DATE .................................................................................................................................................................................................................. 10
3.3.4 SOFTWARE VERSION ................................................................................................................................................................................................... 10
3.3.5 TEMPERATURE UNITS .................................................................................................................................................................................................. 10
3.3.6 NIGHT SETBACK TEMPERATURE ............................................................................................................................................................................... 10
3.3.7 NIGHT SETBACK TIME .................................................................................................................................................................................................. 10
3.4 MENU SET C: DATA LOGGING .................................................................................................................................................................................................... 11
3.4.1 TOTAL HRS. RUN ........................................................................................................................................................................................................... 11
3.4.2 IGNITION ATTEMPTS .................................................................................................................................................................................................... 11
3.4.3 LAST 10 ERRORS .......................................................................................................................................................................................................... 11
3.5 EXITING USER SETTINGS MODE ............................................................................................................................................................................................... 11
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1.0 USER GUIDE
1.1 GENERAL REQUIREMENTS
This equipment must be installed by a competent person, registered with a H.S.E. approved
body. All installations must conform to the relevant Gas Safety and Building regulations. Health
& safety requirements must also be taken into account when installing any equipment.
A competent person must also undertake any alterations that require the gas train or flue system
to be broken.
Any interference with a sealed component is forbidden.
Failure to comply with the above may lead to prosecution.
Incorrect use may result in injury and will also invalidate the warranty
1.2 PROCEDURE FOR LIGHTING
1. Ensure that the gas inlet appliance isolating valve is in the “off” position.
2. Press the power rocker switch, positioned on the back of the appliance to bring the equipment on.
3. Press the Enter/Reset button on the Smart System control panel to initiate the burner.
4. The combustion fan should ramp up to full speed to purge the combustion chamber and then drop back
to half rate in order to light. As the gas inlet appliance isolating valve is closed, the controls should go to
a flame failure condition after four ignition attempts (EKW45CE – EKW115CE) or one ignition attempt
(EKW145CE – EKW235CE). If the above occurs correctly, open the gas inlet appliance isolating valve
and reset the unit by depressing the Enter/Reset button on the control panel.
5. The combustion fan will repeat the pre-purge procedure and attempt to light. Once a flame is
established, the LCD display will change to display the rate at which it is firing.
1.3 PROCEDURE FOR SHUTTING DOWN
To take the appliance out of service, the Enter/Reset button should be pressed. If the appliance in to be shut
down for a long period of time, the power supply should be isolated using the rocker switch on the back and the
gas supply should be isolated at the gas inlet appliance isolating valve.
1.4 TEMPERATURE ADJUSTMENT PROCEDURE
The setpoint can be adjusted using the Up and Down buttons on the Smart System control panel. Once the
desired setpoint is displayed, the Enter/Reset button should be pressed to store the value.
The setpoint should be adjusted to ensure that the water is stored at 60°C and distributed at 50°C within 1 (one)
minute at all outlets. Care is needed to avoid much higher temperatures because of the risk of scalding. At 50°C
the risk of scalding is small for most people, but the risk increases rapidly with higher temperatures and for longer
exposure times. The risk to young children and to those with a sensory or mobility loss will be greater. Where a
significant scalding risk has been identified, the use of thermostatic mixing valves on baths and showers should be
considered to reduce temperature, these need to be placed as close to the point of use as possible.
1.5 MAINTENANCE
The SMART SYSTEM control has a built in timer that counts the time period, operating hours and burner initiation
cycles since the unit was last maintained. Once one of these preset values has been exceeded, the display will
show SERVICE DUE every 5 seconds. At this point, it is strongly recommended that a competent person,
preferably appointed by Lochinvar Limited, carries out the necessary maintenance work.
Details of the necessary maintenance work can be found in the Installation, Commissioning and Maintenance
Instructions.
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1.6 FROST PROTECTION
If the temperature of the water at the inlet side of the heat exchanger drops below 7C, the primary pump will be
energised. If the temperature of the water at the inlet side of the heat exchanger drops further and reaches 3C
the burner will fire. If the temperature rises above 10C the burner and the pump will shut down.
1.7 AIR SUPPLY
When installed as a conventionally flued appliance, the room in which the appliance is installed must be
ventilated.
Blocking these air vents may lead to severe injury, serious property damage or death.
The area in which the appliance is installed should not be used to store any other materials.
1.8 CONDENSATE DRAIN
The condensate drain must not be blocked or modified in any way. If fitted with a neutralisation kit, this must be
replaced at least every 12 months to ensure correct operation. Due to its design, no further maintenance should
be necessary.
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