Lochinvar WH 55-399 operation manual Set space heating operation, Natural Gas Propane

Page 62

10 Start-up

Check flame and combustion (continued)

NOTICE

Please note that the brackets ([]) denote

 

screen status.

 

4.Place the boiler into the active position by pressing the RIGHT SELECT [ON] key (FIG. 11-1, page 70).

5.Locate the pinhole button below the RESET button on the display board (FIG. 11-1). Insert a thin wire (such as a paper clip) into the hole and press the button once and hold for 5 seconds to place the boiler into Service Mode. In Service Mode the boiler will fire at ignition speed and will then modulate up to full fire.

6.Insert the probe from a combustion analyzer into the hole left by the removal of the flue temperature sensor.

7.Once the boiler has modulated up to full fire, measure the combustion. The values should be in the range listed in Table 10A below. The CO levels should be less than 150 ppm for a properly installed unit.

If the combustion is not within the specified range, reference the Troubleshooting Section of the Knight Wall Mount Service Manual for possible causes and corrective actions.

Table 10A Flue Products Chart

Natural Gas

Propane

CO2

 

O2

CO2

 

O2

 

 

8.0% - 10%

 

3.0% - 6.5%

10.0% - 11%

 

4.1% - 5.4%

 

 

 

 

 

 

8.Once the combustion analysis is complete, test the safety shutoff device by turning the manual shutoff switch to the OFF position and ensuring that the boiler shuts down and registers an alarm. Turn the manual shutoff switch to the ON position and reset the control.

9.Turn off power at source and replace the flue temperature sensor into the flue pipe connection.

10.Place the boiler back into normal operation.

￿WARNING You must replace the flue gas temperature sensor to prevent flue gas spillage into

the room. Failure to comply could result in severe personal injury, death, or substantial property damage.

Installation & Operation Manual

Set space heating operation

Determine controlling sensor

For space heating systems, the temperature control can be based on one of three sensors; the inlet, outlet, or system supply sensor. The SMART SYSTEM control is programmed at the factory to control the temperature of the outlet sensor. The control will automatically switch to the system supply sensor once it is connected. If it is desired to base the temperature control on the inlet sensor, the appropriate parameter must be changed in the control. See the Knight Wall Mount Service Manual for a detailed explanation of this procedure.

Verify space heat circulator mode

The Space Heating Mode controls both the system pump (if connected), and the boiler pump. When the SMART SYSTEM control receives a space heating call for heat, it turns on the system pump. If the boiler is not heating an indirect DHW (Domestic Hot Water) tank, and the set point is not met, it also turns on the boiler pump. After the space heating call for heat ends, the system pump continues to run for a short period of time. The system pump can be programmed to run continuously, except during outdoor shutdown. If the boiler pump was running, it continues to run for a short period of time as well. These pump delays are factory set to 30 seconds. If different delays are desired, the appropriate parameters in the control must be changed. See the Knight Wall Mount Service Manual for a detailed explanation of this procedure.

Adjust set point temperature(s)

NOTICE

Please note that the brackets ([]) denote

screen status.

 

The NAVIGATION dial may be used during normal operation to adjust the space heating and tank set point temperatures.

1.From the Status Screen press the NAVIGATION dial.

2.Turn the NAVIGATION dial counterclockwise to select the appropriate set point.

3.Press the NAVIGATION dial to adjust the temperature.

4.Once the desired temperature is displayed, press the RIGHT SELECT [SAVE] key.

5.If necessary repeat Steps 3 and 4 to make adjustments to additional set points.

6.Press the RIGHT SELECT [HOME] key to upload the changes.

7.If the RIGHT SELECT [SAVE] key is not pressed, the new settings will be discarded.

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Contents Models WH 55 Contents Boiler operation When servicing boilerPlease read before proceeding Boiler waterKnight Wall Mount Boiler How it works Stainless steel heat exchangerModels 55 Ratings Knight Wall Mount Boiler Ahri RatingDetermine boiler location Installation must comply withCloset and alcove installations Before locating the boiler, check1Closet Installation Minimum Required Clearances Wall mounting location PrecautionsVent and air piping Prevent combustion air contaminationAreas likely to have contaminants When using an existing vent system to install a new boilerProducts to avoid When removing a boiler from existing common vent system Gas conversions Prepare boilerRemove boiler from wood pallet Mounting to a concrete wall Mounting the boilerMounting to a wood studded wall Mounting to a metal studded wallGeneral venting Direct venting options Sidewall VentInstall vent and combustion air piping Air intake/vent connectionsModel Kit Number Equivalent Vent Length Requirements for installation in CanadaSizing Model Max Vent AirMaterials Air inlet pipe materialsOptional room air Air contaminationVent pipe Approved PVC/CPVC Vent Pipe and FittingsMaterial Standard Vent fittingsCentrotherm InnoFlue SW Duravent Polypro ModelPolypropylene Stainless steel vent Vent/air termination sidewall If using the alternate sidewall terminationSidewall direct venting Determine location2AClearance to Gravity Air Inlets Model Air Vent Centerline Width Prepare wall penetrationsPrepare wall penetrations Alternate Field Supplied Option Multiple vent/air terminationsDescription and usage Sidewall termination installationSidewall termination optional concentric vent 92 and 3 Concentric Vent Dimensional Drawing reference D on Sidewall termination optional concentric vent models12Concentric Vent Sidewall Attachment Multiventing sidewall terminationsPrepare roof penetrations Vertical direct ventingVent/air termination vertical Vertical termination installation Vertical termination optional concentric ventMultiventing vertical terminations Minimum Combustion AIR TypicalConcentric Venting Arrangement Alternate vertical concentric ventingVent / Air Inlet Size Minimum Existing Vent / Chase Size Existing vent as a chaseLow water cutoff device Hydronic pipingSystem water piping methods General piping information Chilled water systemNear boiler piping components Near boiler piping connections Circulator sizing35F Temperature Rise Applications 20F Temperature Rise Applications25F Temperature Rise Applications Pump Size GrundfosVariable speed pump option Smart System / Multi-temperature loop control optionVariable speed pump setup 3Single Boiler Primary / Secondary Piping Make UP Water Indirect Number of Units Boiler Member 8Single Boiler Multiple Temperature DHW Priority Model Required Pipe Sizes Boiler Make UP Boiler Connecting gas supply piping Gas connectionsNatural gas Propane GasLength of Pipe in Straight Feet for 1/2 PSI Natural Gas Pipe Capacity ChartCheck inlet gas supply Gas valve replacement Gas PressureLine voltage connections Field wiringInstallation must comply with Low voltage connections Flow switch Outdoor temperature sensorLouver proving switch ThermostatSystem supply sensor Alarm contactsWiring of the cascade Boiler management systemInstallation FieldwiringCondensate disposal Condensate drainCheck/control water chemistry Freeze protection when usedStart-up Fill and test water systemCheck thermostat circuits Clean/Inspect Trap AssemblyCheck for gas leaks Inspect/fill condensate system Inspect/check condensate lines and fittings If boiler does not start correctly Final checks before starting the boiler Start the boiler Check system and boiler2Operating Instructions Models 55 Operating Instructions Model Set space heating operation Natural Gas PropaneSet domestic hot water DHW operation Verify DHW modeConfiguration of the cascade Operating information GeneralProtection features Boiler temperature regulation Outdoor reset operation, if used CascadeSequence of operation Operation DisplayUser Access modesInstaller Knight wall mount boiler control module 1Control PanelCall for Heat Information Dial Function Owner maintenance Maintenance Maintenance and annual startupService technician See the following pages for instructions GeneralMaintenance Check control settings Check ignition ground wiringCheck all boiler wiring Flue vent system and air pipingPerform start-up and checks Check flame signalCleaning boiler heat exchanger Check burner flameDiagrams PC Interface2Wiring Diagram
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