Laars Pennant PNCV (Sizes 500-2000) - Install and Operat User Manual

Installation and Operation Instructions Document 1176HH2214400HInstallation and OperationInstructions forPENNANT™ Hydronic BoilerModel PNCHWater Heat

LAARS Heating SystemsPage 10 U.S. Installations (see note 1) Canadian Installations (see note 2)A = Clearance above grade, veranda, porch, 12

Pennant (500-2000)Page 11is required in determining how a blocked vent safety system should be connected to a LAARS product, please call Applications

LAARS Heating SystemsPage 12When the unit is vented through the roof, the vent must extend at least 3 feet (0.9m) above the point at which it penetr

Pennant (500-2000)Page 13DISTANCE FROM GAS METEROR LAST STAGE REGULATORSIZE ANDGAS TYPE 0-100' 0-31m 100-200' 31-61m 200-300' 61-91m

LAARS Heating SystemsPage 14 20°F 25°F 30°F 35°F SIZE ow H/L ow H/L ow H/L ow H/L gpm feet gpm feet gpm feet gpm feet 500 43

Pennant (500-2000)Page 15PRIMARY/SECONDARY MANDITORY FOR ALLVARIABLE FLOW SYSTEMSINSTALL AIR VENTS AT HIGH POINTS IN SYSTEMPIPING&SIZING OF EXPANS

LAARS Heating SystemsPage 16PRIMARY/SECONDARY MANDITORY FOR ALLVARIABLE FLOW SYSTEMSINSTALL AIR VENTS AT HIGH POINTS IN SYSTEMPIPING & SIZING OF

Pennant (500-2000)Page 17Figure 6. Hydronic Piping — One Boiler, Multi-Temperature System.PRIMARY/SECONDARY MANDITORY FOR ALLVARIABLE FLOW SYSTEMSINST

LAARS Heating SystemsPage 18LEGENDCHECK VALVETHERMOMETERTEMPERATURESENSORGLOBE VALVEEXPANSION TANKWITH AIR SCOOP ANDAUTO AIR VENT3-WAY VALVEVALVECAU

Pennant (500-2000)Page 19LEGENDCHECK VALVETHERMOMETERTEMPERATURESENSORGLOBE VALVEEXPANSION TANKWITH AIR SCOOP ANDAUTO AIR VENT3-WAY VALVEVALVEPRESSURE

LAARS Heating SystemsPage 2SECTION 1. General Information1.1 Introduction ... 41.2 Model Identi

LAARS Heating SystemsPage 20SECTION 4B.Water Connections — Pennant Water Heater4B.1 Water System Piping — Water HeaterHot water piping should be s

Pennant (500-2000)Page 21Figure 9. Water Heater Piping — One Heater, One Tank.NOTES:6. CAUTION: PUMP SIZING MUST BE BASED UPON WATER HARDNESS ATJOB SI

LAARS Heating SystemsPage 22Figure 10. Water Heater Piping — Multiple Heaters, One Tank.Figure 11. Water Heater Piping — One Heater, Multiple Tanks.

Pennant (500-2000)Page 23 GPM FT TEMP RISE °F LPM M TEMPRISE°C SIZE S N H S N H S N H S N H S N H S N H 500 45 68 90 1.8 2.3

LAARS Heating SystemsPage 24 SINGLE CIRCUIT CONNECTIONS PUMP HEATER ONLY W/O PUMP WITH PUMP TACO B&G 500 15 20 15 15 750 15

Pennant (500-2000)Page 25Figure 14. Field Wiring Panel Figure 15. External Control Connection Wiring.per the suggested piping diagrams, and connected

LAARS Heating SystemsPage 265.3 External Staging Control Wiring WARNINGImproper eld wiring may result in re or explosion which can cause property

Pennant (500-2000)Page 27Figure 16. Pennant 500 - 750 Ladder Diagram.

LAARS Heating SystemsPage 28Figure 17. Pennant 1000 Ladder Diagram.

Pennant (500-2000)Page 29Figure 18. Pennant 1250 - 2000 Ladder Diagram.

Pennant (500-2000)Page 3SECTION 6. Operating Instructions6.1 Sequence of Operation ... 366.2 Filling the Boiler Syste

LAARS Heating SystemsPage 30Figure 19. Pennant 500 - 1000 Wiring Schematic.

Pennant (500-2000)Page 31Figure 20. Pennant 1250 - 1500 Wiring Schematic.

LAARS Heating SystemsPage 32Figure 21. Pennant 1750 - 2000 Wiring Schematic.

Pennant (500-2000)Page 33Figure 22. Field Wiring.Note: Positions of eld wiring terminals may vary, but terminal designations are as indicated.

LAARS Heating SystemsPage 34Figure 23. Field Wiring for Modes 1 - 5.Note: Positions of eld wiring terminals may vary, but terminal designations are

Pennant (500-2000)Page 35Figure 24. Field Wiring for Mode 6.

LAARS Heating SystemsPage 36SECTION 6.Operating Instructions6.1 Sequence of OperationA call for heat can be initiated either automatically (auto mo

Pennant (500-2000)Page 37piping, as described in Step 4.12. Close make-up water valve and check strainer in pressure reducing valve for sediment or d

LAARS Heating SystemsPage 38 APPLICATION MODE SYSTEM SETTING SENSORS USED • Parallel piping (non- primary/secondary) hydronic system 1 •

Pennant (500-2000)Page 39Figure 27. Temperature Control Target Temperature Graph.These terminals can power a contactor for a larger system pump. L

LAARS Heating SystemsPage 4SECTION 1.General InformationUSING THIS MANUAL – Because the Pennant Boilers and Pennant Water Heaters are identical appl

LAARS Heating SystemsPage 40Hydronic Primary/Secondary (Mode 2) Programming. Mode 2 is used in primary-secondary piping hydronic systems without out

Pennant (500-2000)Page 41 CautionIf the tank temperature control is set too high, a potential for hot water scalding may exist.Mode 2: Primary second

LAARS Heating SystemsPage 42Figure 28. Temperature Control Interstage Differential.6.4 Advanced Topics For most installations, Section 6.3 provid

Pennant (500-2000)Page 43Figure 29. Temperature Control Min & Max.stage. After the minimum time delay between stages has expired, the control exam

LAARS Heating SystemsPage 44Figure 30. Temperature Control Outdoor Start Graph.selected, pump operation is continuous. Also, during outdoor reset, w

Pennant (500-2000)Page 45Figure 31. Typical Gas Train Conguration.Figure 32. Typical Control Panel.DSGN temperature is the water temperature required

LAARS Heating SystemsPage 466.4.10 External Boiler OperationWhen mode 6 is selected, the control allows for an external control to operate the Penna

Pennant (500-2000)Page 47 (c) Open gas shutoff valve. Restart the appliance. The ignition sequence will start again and the burner will start. The a

LAARS Heating SystemsPage 48SECTION 7.Maintenance7.1 System Maintenance1. Lubricate the system water-circulating pump, if required, per the instru

Pennant (500-2000)Page 49and boilers ordered with low temperature controls. To replace the switch, shut off the 120-volt power to the appliance. Remov

Pennant (500-2000)Page 51.2 Model IdenticationConsult the rating plate on the unit. The following information describes the model number structure.M

LAARS Heating SystemsPage 506. Allow the heat exchanger to drain. Remove the front cover(s) by removing the rubber access strip(s) and the retainin

Pennant (500-2000)Page 51controller setup. Contact your Laars representative to discuss possible remedies.8.4 Short Cycling — Water HeaterShort cycli

LAARS Heating SystemsPage 52models (500 and 750), one 3-stage model (1000), and four 4-stage models (1250 to 2000). The 2-stage models have one igni

Pennant (500-2000)Page 53Table 12. Troubleshooting Error Codes.

LAARS Heating SystemsPage 54Item Description Size Size Size Size Size Size Size 500 750 1000 1250 1500 1750 2000 Sheet Metal Components

Pennant (500-2000)Page 55 Internal Components See Figures 35 and 3417 Base Assembly 5C1020 7C1020 10C1020 12C1020 15C1020 17C1020 20C102018 Cham

LAARS Heating SystemsPage 56 (1) (1) (2) (2)36 Tile, Rear T2015700 (1)37 Tile, Rear, Left Side T2017500 T2016600 T2016600 T20166

Pennant (500-2000)Page 57Item Description Size Size Size Size Size Size Size 500 750 1000 1250 1500 1750 2000 Relief Valve, PNCV, 125 PSI

LAARS Heating SystemsPage 5871 High Limit, Manual Reset, PNCH RE0015900 RE0015900 RE0015900 RE0015900 RE0015900 RE0015900 RE0015900 High Limit, M

Pennant (500-2000)Page 59 Burner Manifold Assy, 4 Burners, Left, LP 10C6520 10C6500 10C6520 10C6520 (2) (2) (2) (4)78 Valve, Ga

LAARS Heating SystemsPage 6Figure 1. Dimensional Data.SHIPPING WEIGHTSIZE lbs. kg500 425 193750 505 2291000 615 2791250 675 3061500 760 3451750

LAARS Heating SystemsPage 60Figure 33. Sheet Metal Components.

Pennant (500-2000)Page 61Figure 34. Internal Components.SeeElectrical Componentsfor detail.

LAARS Heating SystemsPage 62Figure 35. Heat Exchanger Components.See pump chart below for pump numbers.Pennant Hydronic Boiler SIZE TACO PUMP P/N

Pennant (500-2000)Page 63Figure 36. Electrical Components.

H2214400HCustomer Service and Product Support: 800.900.9276 • Fax 800.559.1583Headquarters: 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 •

Pennant (500-2000)Page 71.6 Locating Pump-Mounted Water Heater with Respect to Storage Tank(s)For best results, a pump-mounted Pennant water heater s

LAARS Heating SystemsPage 8Figure 2. Combustion Air and Vent Through Roof. EACH OPENING* SIZE SQUARE INCHES SQUARE CM 500 125 807 750 188 1

Pennant (500-2000)Page 9length allowed is 50 feet (15.2m). Three elbows have been calculated into the 50-foot (15.2m) linear run. Subtract 10 allowabl