Laars HP-M2 Series - Installation, Operation and Mainten User Manual

Installation, Operation and Maintenance Instructions Document 1105Installation, Operation andMaintenance Instructions for H SeriesHW-M2 Series H-M2

Page 10LAARS Heating SystemsSECTION 3.Venting and Air Source3A. The Direct Vent Kits(part numbers 2400-326 or 2400-328)When using the Direct Vent Kit,

H SeriesPage 112. For boilers in confined rooms, two permanentopenings shall be provided - one within 12" ofthe ceiling, and one within 12"

Page 12LAARS Heating Systems4B. Domestic Water PipingConnect hot water tempering valve (12) “HOT”port to hot water outlet from unit. This valve should

H SeriesPage 135C. Hydronic Piping - HW SeriesHW-M2 boilers are installed in single andmultiple zone systems ( using either zone valves orzone circula

Page 14LAARS Heating SystemsFigure 15. Hydronic Piping with Indirect H(P).OUT OFPRODUCTION

H SeriesPage 15Figure 16. Hydronic Piping H(P) Models.Figure 17. Hydronic Piping H(P) in Radiant “in floor” or Low Mass Heating System.OUT OFPRODUCTIO

Page 16LAARS Heating SystemsSECTION 6.Electrical Connections6A. Electrical ConnectionsAll electrical wiring must conform to local codesand/or the 1).

H SeriesPage 17SECTION 7.HP Mounting PipingThe Model HP-M2-Series may be used as eithera Paloma Pak/Hytech boiler replacement or as a newwall-mount in

Page 18LAARS Heating Systems8A-2. CGARefer to page 4 for Alternate Venting Method.8B. Electrical ConnectionsIf the installation is new, wire the unit

H SeriesPage 19SECTION 9.Check, Test and Start Up9A. Filling System1. Open all supply and return valves.2. Fill heating system to minimum operatingpre

Page 2LAARS Heating SystemsTABLE OF CONTENTSSECTION 1.General Information1A. HW Series, H Series, HP Series ... 41B. to the Installer:

Page 20LAARS Heating Systems9C-2. Operating Control H-M2Burner will run until operating control cut-outtemperature (185°F) is reached.When Operating C

H SeriesPage 21 Keep boiler jacket louvers clear for propercooling of internal components.Do not obstruct boiler room ventilation screensor grills.10B

Page 22LAARS Heating Systems6. Clean the finned tubing with a wire brush andvacuum all loose material from the combustionchamber.7. Replace all parts

H SeriesPage 2311I. TransformerThe control transformer accepts 120 VAC powerand provides 40 VA of 24 VAC power for the boilercontrol only. It is not c

Page 24LAARS Heating Systemsand actuator are on the system side. Close union, openvalves, refill and bleed system, bleed coil at coil bleedpetcock and

H SeriesPage 25the pressure to go positive (above 0 IN. W.C.). If thepressure spikes positive when the solenoid opens thenthe gas valve regulator is f

Page 26LAARS Heating Systemstransfer tank. If no flow check exists or if an existingflow check is left in the manual (open) position, heatleaves the b

H SeriesPage 27possible to check for cross contamination in anotherway. Loosen the top clamp on the air duct couplingand remove the gas balance line f

Page 28LAARS Heating SystemsRED “PURGE” Light flashing - blower or stackswitch failure or possible flue blockage.RED “VALVE” Light flashing - valve, i

H SeriesPage 29PURGE - SEE FIGURE 26VALVE SEE FIGURE 281. LIMIT CIRCUIT OPENSEE FIGURE 252. NO CALL FOR HEAT/HOT WATERREPLACE BOILERCONTROL2400-224REP

H SeriesPage 3HW-M2 Series H-M2 Series HP-M2 SeriesHW-M2-130 H-M2-130* HP-M2-130*HW-M2-100 H-M2-100 HP-M2-100HW-M2-60 H-M2-60 HP-M2-60Integrated Hydro

Page 30LAARS Heating SystemsFigure 25. Testing Limit Circuit (You Must Complete Figure 24 First).Ð123456789REDREDCN6"CONTROL"LIMIT CIRCUIT A

H SeriesPage 31Figure 26. Red "Purge" Light Flashing (You Must Complete Figure 24 First).RESET BOILER CONTROL BYSWITCHING POWER OFF FOR 15SE

Page 32LAARS Heating SystemsFigure 27. Checking Blower (You Must Complete Figure 26 First).RESET BOILER CONTROL BYSWITCHING BOILER SWITCH OFFFOR 15 SE

H SeriesPage 33CLEAR1. TURN OFF BOILER SWITCH2. REMOVE BOTH TUBES FROMSTACK SWITCH AND DISCONNECTELECTRICAL WIRES3. CHECK FOR CONTINUITY ACROSSSWITCH

Page 34LAARS Heating SystemsFigure 29. Red "Valve/Flame" Light Flashing (You Must Complete Figure 24 First).RESET BOILER BY INTERUPTING POWE

H SeriesPage 35WITH A CALL FOR HEAT RESETBOILER CONTROL BY SWITCHINGOFF BOILER SWITCH FOR 15 SECS.AND THEN ON AGAIN.AFTER TWO SECONDS DOESGREEN POWER

Page 36LAARS Heating Systems2022826Figure 31. Parts Identification.Figure 33. Parts Identification.Figure 32. Parts Identification.Figure 34. Parts Id

H SeriesPage 37Installer:Date of Installation:Serial Number:NO. DESCRIPTION P / N1 Top dome for combustion chamber 2400-0382 Insulation retainer 1-428

Page 38LAARS Heating SystemsOUT OFPRODUCTION

H SeriesPage 39Figure 36. H(P) Wiring Diagram.Figure 37. H(P) Ladder Diagram.FUSE“Caution: Label all wires prior to disconnection when servicing contr

Page 4LAARS Heating SystemsSECTION 1General Information1A. HW Series, H Series, HP SeriesThe H Series boiler is a low pressure, hot waterboiler that i

Page 40LAARS Heating SystemsFigure 38. HW Wiring Diagram.Figure 39. HW Ladder Diagram.FUSE“Caution: Label all wires prior to disconnection when servic

H SeriesPage 41SECTION 15.Trouble Shooting15A. S9301A Control ModuleNORMAL SEQUENCE FAILURE TO COMPLETE THIS CYCLEEventControl FuntionVerifiedEnvent C

Page 42LAARS Heating Systems15B. Quick Reference Trouble ShooterFOR MORE INFORMATION SEE INDEXA. SHORT CYCLING: Unit shuts down before reaching limit.

H SeriesPage 43OUT OFPRODUCTION

1-510Laars WarrantyH SeriesResidential Hydronic Heating and Domestic Hot Water ApplianceThis Laars product is backed by thislimited twenty year warran

H SeriesPage 51C. Codes and StandardsAll installations must be made in accordancewith: 1). The National Fuel Gas Code, ANSI Z223.1 -latest edition or

Page 6LAARS Heating Systems2B. Chimney Venting (USA Only)Model H(W)-M2-60 and H(W)-M2-100 MUSTNOT BE CHIMNEY OR B-VENT CONNECTED.Model H(W)-M2-130 is

H SeriesPage 7Height LateralVent Connector Diameter (A & D)5" 6"Appliance Rating in MBHH L Fan Assist Fan Assist(ft) (ft) Min Max Min Ma

Page 8LAARS Heating Systems2E. Installing Stainless SteelHorizontal / Vertical Venting(non concentric)Stainless Steel Special Gas Vent listed to U.L.S

H SeriesPage 9Figure 6. Part Number 2400-372.Figure 7. Vent Terminal Used As An Air Screen.Figures 8 and 9. Vent Pipe Attachment.OUT OFPRODUCTION