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13.4.3
PROCEDURE FOR INITIAL LIGHTING
IF THE UNIT IS TO OPERATE ON LPG REFER TO SECTION 14 BEFORE PROCEEDING
1.
Ensure that the gas-inlet appliance isolating valve, provided by the installer, 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 user control interface 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. The spark generator should create a spark, visible through the burner sight
glass. As the gas-inlet appliance isolating valve is closed, the controls should go to a flame failure
condition after four ignition attempts (SHW45-325CE – SHW115-435CE) or one ignition attempt
(SHW145-435CE). 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.
6.
Allow the system to reach temperature to check operation of the control sensors.
7.
Once the unit has reached temperature and shut down, check that the flame has extinguished.
13.4.4
GAS PRESSURE ADJUSTMENT AND COMBUSTION CHECKS
The Lochinvar EcoShield series are supplied with a preset gas/air ratio inlet assembly. This must not be
tampered with. Any attempt to adjust the gas valve or venturi will invalidate the warranty.
Combustion figures should be as follows:
TABLE 13.1
If the combustion figures are not within the range specified, contact Lochinvar Limited for further guidance.
Combustion figures for Propane firing can be found in Section 14 LPG FUEL.
13.5
TEMPERATURE ADJUSTMENT PROCEDURE
With the heater firing, the setpoint can be adjusted using the Up and Down buttons on the user interface 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.
13.6
INSTALLATION NOISE
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.
Model No.
CO
2
9.0% 0.5%
SHW45-325CE
9.0% 0.5%
SHW60-325CE
8.8% 0.5%
SHW85-435CE
8.8% 0.5%
SHW115-435CE
8.8% 0.5%
SHW145-435CE
NATURAL GAS COMBUSTION FIGURES
CO
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<100 ppm
33
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