Laars Mighty Therm HH-PH (Sizes 175-400) - Installation, User Manual

Installation, Operation and Maintenance Instructions Document 1064EH0147400EInstallation,Operation andMaintenanceInstructions forMighty ThermHydronic

LAARS HEATING SYSTEMSPage 105. Remove the flue collector assembly by lifting itout of the chassis.6. Remove the screws that fastens the gap closuresan

Mighty Therm HH-PH Hydronic BoilersPage 1121. Install the sensing bulb(s) into the appropriatethermowell (keep in mind that the positions ofthe inlet

LAARS HEATING SYSTEMSPage 12Figure 21. Piping — Multiple Boilers, Primary Secondary System.Figure 22. Piping — Multiple Boilers, Low Temperature Syste

Mighty Therm HH-PH Hydronic BoilersPage 13Figure 23. Hydronic Piping — One Boiler, Multi-Temperature System.The correct flow rate can be verified by c

LAARS HEATING SYSTEMSPage 14OPTIONAL PUMP MOUNTED UNIT AVALIABLEBOILER CIRC.PUMPCOLD WATERMAKE-UPSYSTEM PUMPSYSTEMRETURNSYSTEMSUPPLYCTHERMOMETERGLOBE

Mighty Therm HH-PH Hydronic BoilersPage 152F-6. Chilled Water SystemsIf the boiler is part of a refrigeration system,include the right valves to isola

LAARS HEATING SYSTEMSPage 16with CAN1-B149.1 or .2 and all local codesthat apply.2. Check the rating plate to make sure the boiler isfitted for the ty

Mighty Therm HH-PH Hydronic BoilersPage 17Figure 28. Typical Example of Wiring Schematic, System 1.TYPICAL WIRING DIAGRAM:IGNITION SYSTEM NO. 1 - STAN

LAARS HEATING SYSTEMSPage 18Figure 29. Typical Example of Wiring Schematic, System 12.TYPICAL WIRING DIAGRAM:IGNITION SYSTEM NO. 12 - ELECTRONIC IGNIT

Mighty Therm HH-PH Hydronic BoilersPage 19Consult local codes and fire protection authoritiesabout specific installation restrictions.2H. Electrical W

LAARS HEATING SYSTEMSPage 2TABLE OF CONTENTSSECTION 1.General Information1A. Introduction ... 31B. War

LAARS HEATING SYSTEMSPage 20Figure 31. Flame Patterns.MAIN BURNER FLAME PATTERNPILOT FLAME PATTERNELECTRONIC PILOTSTANDING PILOTtemperature drop in th

Mighty Therm HH-PH Hydronic BoilersPage 21b. Flame is not lifting off the burner ports4. Inspect the venting system for blockage, leakage,and corrosio

LAARS HEATING SYSTEMSPage 228. Tag and remove all wires from the gas valveterminals.9. Pull the burner tray out of the boiler (seeFigure 32).NOTE: Due

Mighty Therm HH-PH Hydronic BoilersPage 23Item Description Part NumberELECTRICAL SYSTEM12. High Tension Lead ... 1

LAARS HEATING SYSTEMSPage 241516141312DC2021E23322829303125272428E64651955636241434543394847A3334424652516639693738354036C67FF18710116B9864(REF)68D566

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LAARS HEATING SYSTEMSPage 26

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®H0147400EA subsidiary of BRADFORD WHITE Corporation800.900.9276 • Fax 800.559.1583 (Customer Service, Service Advisors)20 Industrial Way, Rochester,

Mighty Therm HH-PH Hydronic BoilersPage 3A8-1/2 in.(216mm)INLET OUTLETTOP VIEWCCOPTIONALVENT CAP FOROUTDOOR USEDRAFTHOODDRAFTHOOD MUSTBE INSTALLED INT

LAARS HEATING SYSTEMSPage 4HOTHOTSECTION 2.Installation Instructions2A. General InformationWARNINGFollow local regulations with respect to installatio

Mighty Therm HH-PH Hydronic BoilersPage 5HeaterHeaterCloset Installation(unacceptable)Room Installation(acceptable)Alcove Installation(acceptable)A cl

LAARS HEATING SYSTEMSPage 6Figure 12. Standard Base for Combustible Floor.Figure 13. Typical Roof Mounting with StandardCombustible Mount Base.4 ft.(1

Mighty Therm HH-PH Hydronic BoilersPage 7NOTE: Check with louver manufacturers for netfree area of louvers. If not available, add 50 percentfor each s

LAARS HEATING SYSTEMSPage 8NOTE: Do not use sheet metal screws at thesnap lock joints of Type B gas vents.Do not weld or bolt the vent pipe to the boi

Mighty Therm HH-PH Hydronic BoilersPage 9Figure 16. Heat Exchanger Removal.Figure 17. Flue Collector Holddown Clamps.Flue CollectorClampIn/Out Header