Lochinvar 400-801 Near boiler piping connections, Circulator sizing, Variable speed pump option

Page 17

Outdoor Knight XL Installation & Operation Manual

3 Hydronic piping (continued)

12. Boiler purge valve:

Field supplied. The boiler purge valve is used to

Figure 3-4BNear Boiler Piping w/Low Loss Header

remove entrapped air from the heat exchanger during

start-up.

13. System temperature sensor:

Lochinvar supplies a system temperature sensor. The

sensor is to be installed in the heating loop downstream

from the boiler hot water piping and heating loop

junction. The sensor should be located far enough

SYSTEM PUMP

SYSTEM SENSOR

AIR SEPARATOR

DRAIN (TYPICAL)

AIR VENT VALVE

LOW LOSS HEADER (TYPICAL)

 

 

 

O

M

 

 

 

E

 

 

T

ST

 

 

 

Y

 

 

 

S

 

 

M

M

 

O

 

R

E

 

F

 

T

 

 

S

 

 

 

Y

 

 

 

S

 

 

 

FAST FILL VALVE

EXPANSION TANK

downstream to sense system diluted water temperature.

14. Y-Strainer:

Field supplied. A Y-strainer or equivalent multipurpose

strainer is recommended at the inlet of the heat exchanger

to remove system particles from older hydronic systems

and protect newer systems.

Circulator sizing

The Outdoor Knight XL heat exchanger does have a pressure drop, which must be considered in your system design. Refer to the graphs in FIG’s 3-5 and 3-6 for pressure drop through the Outdoor Knight XL heat exchanger.

Near boiler piping connections

 

 

INDIRECT

DRAIN

O

DOMESTIC

VALVE

M

HOT WATER

F

 

R

 

 

O

TANK

 

 

 

T

 

Y-STRAINER (RECOMMENDED)

BOILER PUMP

IMG00391

Figure 3-4ANear Boiler Piping w/Y-Strainer

TO FLOOR

DRAIN

SYSTEM SENSOR

AIR SEPARATOR

SYSTEM PUMP

O

T

M

E

T

S

Y

S

Y-STRAINER (RECOMMENDED)

BOILER PUMP

 

M

M

 

O

 

R

E

F

 

T

 

 

S

 

 

Y

 

 

S

 

 

DOMESTIC HOT

WATER PUMP

M

O

R

F

O

T

INDIRECT

DOMESTIC HOT WATER TANK

Variable speed pump option

Variable speed pump setup

Before operation, ensure the following:

-Pump is set for an input signal of 0 - 10VDC by the dip switches on the pump control

-Pump is set for external signal control (if applicable)

-Pump is set for linear output (if applicable)

-If pump does not come equipped with a 0 - 10 VDC input option, an optional module will be required from the vendor

SMART SYSTEM / Multi-temperature loop control option

IMG00413

TO FLOOR

DRAIN

The Outdoor Knight XL boiler is capable of producing up to three (3) set point temperatures to meet different space heating demands. When using more than one temperature demand it is necessary to protect the lower temperature loop from overheating. To help aid with this protection, Lochinvar offers the Multi- Temperature Loop Control Board Kit (RLY30086).

17

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Contents
Outdoor Knight XL Models 400 Contents Please read before proceeding When servicing boilerStainless steel heat exchanger Outdoor Knight XL How it worksModel Models 601 Outdoor Knight XL Boiler Ahri Rating RatingsBefore locating the boiler, check Installation must comply withDetermine boiler location Outdoor vent / air intake location Provide clearancesFlooring and foundation Prevent combustion air contaminationRemove boiler from wood pallet Install flue pipe assembly Models 400Prepare boiler Models 701 3Install flue pipe assembly Models 701Gas conversions Model 4Installing Propane Orifice ModelLeveling the boiler Models 601Hydronic piping TEE with 1 Fitting on TOP Nipple Close Nipple Near boiler piping components Flow switch adjustmentVariable speed pump option Near boiler piping connectionsCirculator sizing 20F 25F 30F 35F Model Head FeetPressure 7Single Boiler Multiple Temperatures 8Single Boiler Primary/Secondary Piping Manifold Pipe Sizes in Inches mm Number of Units10Multiple Boilers Primary/Secondary Piping Temperature Wires to Loop Sensors 120VAC to Gas connections Connecting gas supply pipingPropane Gas Natural gasInches Check inlet gas supplyGas pressure Gas valve replacementInstallation must comply with Field wiringLine voltage connections Low voltage connectionsHigh gas pressure switch Outdoor temperature sensorLow gas pressure switch ThermostatAlarm contacts Flow switchWiring of the cascade ModBus3Low Voltage Field Wiring Connections Condensate drain Condensate disposalStart-up Freeze protection when usedCheck/control water chemistry Fill and test water systemCheck thermostat circuits Check for gas leaksInspect/fill condensate system Inspect/check condensate lines and fittingsStart the boiler Final checks before starting the boilerIf boiler does not start correctly Check system and boilerFor Your Safety Read Before Operating Natural Gas Propane Set space heating operationConfiguration of the cascade Verify DHW modeSet domestic hot water DHW operation General Operating informationHow the boiler operates How the control module operatesProtection features Temperature controlBoiler temperature regulation Cascade Outdoor reset operation, if usedOperation Display Sequence of operationStandby, ready to start a new cycle Installer Access modesOutdoor Knight XL control module UserCall for Heat Information Dial Function Owner maintenance Maintenance Maintenance and annual startupService technician Maintenance Check water system Flue vent system and air pipingCheck expansion tank Check boiler relief valveCheck all boiler wiring Check ignition ground wiringCheck control settings Inspect ignition and flame sense electrodesCleaning boiler heat exchanger Check flame signalReview with owner Model Kit Part Component Number DescriptionHigh Voltage Diagrams2Ladder Diagram