Laars Pennant PNCH Installation And Operation Instructions Manual
  1. Manuals
  2. Brands
  3. Laars Manuals
  4. Boiler
  5. Pennant PNCH
  6. Installation and operation instructions manual

Laars Pennant PNCH Installation And Operation Instructions Manual

Hydronic boiler and water heater
Hide thumbs Also See for Pennant PNCH:
Table of Contents

Advertisement

Quick Links

Installation and Operation Instructions
FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualified in hot water boiler installation and maintenance. Improper installation and/or operation could
create carbon monoxide gas in flue gases which could cause serious injury, property damage, or death.
Improper installation and/or operation will void the warranty. For indoor installations, as an additional
measure of safety, Laars strongly recommends installation of suitable Carbon Monoxide detectors in the
vicinity of this appliance and in any adjacent occupied spaces.
WARNING
If the information in this manual is not
followed exactly, a fire or explosion may
result causing property damage, personal
injury or loss of life.
Do not store or use gasoline or other
flammable vapors and liquids in the vicinity
of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Immediately call your gas supplier from a
nearby phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call
the fire department.
Installation and service must be performed by
a qualified installer, service agency, or gas
supplier.
H2214400F
Installation and Operation
Instructions for
Pennant
Hydronic Boiler
Model PNCH
Water Heater
Model PNCV
Sizes 500-2000
U.S. Reg. 2,765,423
AVERTISSEMENT
Assurez-vous de bien suivres les instructions
données dans cette notice pour réduire au
minimum le risque d'incendie ou d'explosion ou
pour éviter tout dommage matériel, toute
blessure ou la mort.
Ne pas entreposer ni utiliser d'essence ni
d'autres vapeurs ou liquides inflammables dans
le voisinage de cet appareil ou de tout autre
appareil.
QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ:
• Ne pas tenter d'allumer d'appareils.
• Ne touchez à aucun interrupteur. Ne pas vous
servir des téléphones dansle bâtiment où vous
vous trouvez.
• Appelez immédiatement votre fournisseur de
gaz depuis un voisin. Suivez les instructions du
fournisseur.
• Si vous ne pouvez rejoindre le fournisseur de
gaz, appelez le sservice des incendies.
L'installation et l'entretien doivent être assurés par
un installateur ou un service d'entretien qualifié ou
par le fournisseur de gaz.
Document 1176F
™

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Pennant PNCH and is the answer not in the manual?

Questions and answers

Related Manuals for Laars Pennant PNCH

Summary of Contents for Laars Pennant PNCH

  • Page 1 Improper installation and/or operation will void the warranty. For indoor installations, as an additional measure of safety, Laars strongly recommends installation of suitable Carbon Monoxide detectors in the vicinity of this appliance and in any adjacent occupied spaces.

  • Page 2: Table Of Contents

    LAARS Heating Systems Page 2 TABLE OF CONTENTS SECTION 1. SECTION 3. General Information Gas Supply and Piping Introduction ............. 4 Gas Supply and Piping ........13 Model Identification ......... 4 SECTION 4A. Warranty ............5 Water Connections – Boiler Dimensions ............
  • Page 3 Pennant ( 500-2000 ) Page 3 SECTION 6. SECTION 7. Operating Instructions Maintenance Sequence of Operation ......... 36 System Maintenance ........48 Filling the Boiler System ....... 36 Appliance Maintenance and Component Description ......... 48 Programming the Temperature Control ..37 7.2.1 Burners ............

  • Page 4: General Information

    1) In the U.S., the " National Fuel Gas be installed in accordance with the procedures Code"ANSI Z223.1/NFPA54, Latest Edition and all detailed in this manual, or the Laars Heating applicable local codes as required by the Authorities Systems warranty may be voided. The installation...

  • Page 5: Warranty

    1.3 Warranty Laars Heating Systems’ Pennant appliances are covered by a limited warranty. The owner should fill out the warranty registration card and return it to Laars Heating Systems. All warranty claims must be made to an authorized Laars Heating Systems representative or directly to the factory.
  • Page 6 LAARS Heating Systems Page 6 SHIPPING WEIGHT SIZE lbs. 1000 1250 1500 1750 2000 *Add 55 lbs. (25kg) for pump- mounted units. VENT HORIZ. CONN. CONN. VENT SIZE PIPE 33½ 15¾ 5¾ 29¾ 76 32¾ 7¾ 8¾ 46 117 6 15 45½...

  • Page 7: Locating Pump-Mounted Water Heater With Respect To Storage Tank(S)

    Pennant ( 500-2000 ) Page 7 1.6 Locating Pump-Mounted Water Heater 1.8 Locating Appliance for Correct with Respect to Storage Tank(s) Horizontal Vent/Ducted Air Distance For best results, a pump-mounted Pennant water From Outside Wall heater should be located within 15 feet (4.6m) of the The forced draft combustion air blower/blowers storage tank(s).

  • Page 8: Venting And Combustion Air

    When taken from the wall, it bottom, of the enclosure shall be provided. The must be taken from out-of-doors by means of the Laars openings shall communicate directly, or by ducts, with horizontal wall terminal (see Table 2). When taken...

  • Page 9: Venting

    Pennant ( 500-2000 ) Page 9 length allowed is 50 feet (15.2m). Three elbows have If chimney height is greater than 25 feet, or if been calculated into the 50-foot (15.2m) linear run. multiple units are vented into the same vertical vent, a Subtract 10 allowable linear feet (3.0m) for every barometric damper must be installed on each additional elbow used (see Table 2).
  • Page 10 LAARS Heating Systems Page 10 U.S. Installations (see note 1) Canadian Installations (see note 2) A = Clearance above grade, veranda, porch, 12 inches (30 cm) 12 inches (30 cm) deck, or balcony B = Clearance to window or door that may be 4 feet (1.2 m) below or to side of opening;...

  • Page 11: Category Iii Vent

    In Canada, the installation system should be connected to a LAARS product, must be in accordance with CSA B149.1 or .2 and please call Applications Engineering at the Rochester local applicable codes.

  • Page 12: Vertical Vent Terminal

    LAARS Heating Systems Page 12 cigarette, cigar or pipe. 2.3.3 Vertical Vent Terminal After it has been determined that each appliance When the unit is vented through the roof, the vent remaining connected to the common venting must extend at least 3 feet (0.9m) above the point at system properly vents when tested as outlined which it penetrates the roof.

  • Page 13: Gas Supply And Piping

    Pennant ( 500-2000 ) Page 13 A sediment trap must be provided upstream of the SECTION 3. gas controls. Gas Supply and Piping All threaded joints should be coated with piping compound resistant to action of liquefied 3.1 Gas Supply and Piping petroleum gas.

  • Page 14: Section 4A

    LAARS Heating Systems Page 14 guide. Components required by local codes must be SECTION 4A. properly installed. Water Connections — Note the recommended location of the Pennant Boiler temperature sensor on the diagrams; you must provide a location for the additional sensor shipped with the Pennant.
  • Page 15 Pennant ( 500-2000 ) Page 15 COLD WATER MAKE-UP SYSTEM RETURN SYSTEM SYSTEM PUMP SUPPLY PUMP LOCATION FOR NON-PUMP-MOUNTED UNITS CAUTION: THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND VALVING, CHECK PUMP LOCATION FOR PUMP-MOUNTED UNITS WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS.
  • Page 16 LAARS Heating Systems Page 16 COLD WATER MAKE-UP SYSTEM SYSTEM SUPPLY SYSTEM PUMP RETURN ADJUSTMENT PROCEDURE TO MAINTAIN 120°F INLET TEMP: 1. Turn on boiler and open valves A & B. 2. After steady-state operation, if T1 is less than 120°F,...
  • Page 17 Pennant ( 500-2000 ) Page 17 150°F COLD WATER MAKE-UP 180°F 130°F 180°F SYSTEM PUMP NOTES: 1. BOILER LOOP IN EXAMPLE IS MAINTAINED AT 180°F. PUMP LOCATION FOR 2. ZONE THERMOSTATS CAN BE INTERLOCKED WITH BOILER, NON-PUMP-MOUNTED UNITS SO THAT BOILER FIRES UPON CALL FOR HEAT FROM ANY ZONE.
  • Page 18 LAARS Heating Systems Page 18 COLD WATER MAKE-UP SYSTEM RETURN SYSTEM SYSTEM PUMP SUPPLY PUMP LOCATION FOR NON-PUMP-MOUNTED UNITS PUMP LOCATION FOR PUMP-MOUNTED UNITS PRIMARY/SECONDARY MANDITORY FOR ALL CAUTION: THIS DRAWING SHOWS SUGGESTED VARIABLE FLOW SYSTEMS PIPING CONFIGURATION AND VALVING, CHECK...
  • Page 19 Pennant ( 500-2000 ) Page 19 COLD WATER MAKE-UP SYSTEM RETURN SYSTEM SYSTEM PUMP SUPPLY ADJUSTMENT PROCEDURE TO MAINTAIN 120°F INLET TEMP: 1. Turn on boiler and open valves A & B. 2. After steady-state operation, if T1 is less than 120°F, slowly close valve B until T1 climbs to 120°F.

  • Page 20: Section 4B

    Contact a so make sure a pump-mounted unit matches the water Laars Representative if you have questions or quality of the installation. concerns about water quality.

  • Page 21: Freeze Protection - Water Heater

    4B.5 Freeze Protection – Water Heater result in leaking or flooding conditions. Although Pennant water heaters are design- Contact the local factory representative or Laars certified for outdoor installations, such installations for additional information. are not recommended in areas subject to freezing temperatures, unless proper precautions are taken.
  • Page 22 LAARS Heating Systems Page 22 Figure 10. Water Heater Piping — Multiple Heaters, One Tank. Figure 11. Water Heater Piping — One Heater, Multiple Tanks.
  • Page 23 Pennant ( 500-2000 ) Page 23 Figure 12. Water Heater Piping — Multiple Heaters, Multiple Tanks. TEMP RISE °F TEMP RISE °C SIZE 1000 1250 1500 1750 2000 10.0 10.0 10.0 NOTES: 1. S = soft water (1 to 7.5 grains hardness) 2.

  • Page 24: Electrical Connections

    LAARS Heating Systems Page 24 Pennant 1750-2000 will require two 120-volt SECTION 5. fused supplies. Heater circuit can be identified with Electrical Connections 10AWG wires to include black, white and green (all solid colors). Pump circuit can be identified with three...
  • Page 25 Pennant ( 500-2000 ) Page 25 the suggested piping diagrams, and connected to the “S switches, flow switches, etc.), remove the jumper C2” and “SUP S” terminals. See Section 6.3 for between the “COM” and “NO” terminals and wire the “Mode”...

  • Page 26: External Staging Control Wiring

    LAARS Heating Systems Page 26 5.3 External Staging Control Wiring WARNING Improper field wiring may result in fire or explosion which can cause property damage, severe injury, or death. Make only wiring connections which are in accordance with the Installation and Operation manual.
  • Page 27 Pennant ( 500-2000 ) Page 27 Figure 16. Pennant 500 - 750 Ladder Diagram.
  • Page 28 LAARS Heating Systems Page 28 Figure 17. Pennant 1000 Ladder Diagram.
  • Page 29 Pennant ( 500-2000 ) Page 29 Figure 18. Pennant 1250 - 2000 Ladder Diagram.
  • Page 30 LAARS Heating Systems Page 30 Figure 19. Pennant 500 - 1000 Wiring Schematic.
  • Page 31 Pennant ( 500-2000 ) Page 31 Figure 20. Pennant 1250 - 1500 Wiring Schematic.
  • Page 32 LAARS Heating Systems Page 32 Figure 21. Pennant 1750 - 2000 Wiring Schematic.
  • Page 33 Pennant ( 500-2000 ) Page 33 Figure 22. Field Wiring.
  • Page 34 LAARS Heating Systems Page 34 Figure 23. Field Wiring for Modes 1 - 5.
  • Page 35 Pennant ( 500-2000 ) Page 35 Figure 24. Field Wiring for Mode 6.

  • Page 36: Operating Instructions

    LAARS Heating Systems Page 36 SECTION 6. display, and the energizing of additional burner stages is indicated by front panel lights. Operating Instructions If there is a subsequent loss of flame signal, the burner will attempt re-ignition up to three times (only 6.1 Sequence of Operation...

  • Page 37: Programming The Temperature Control

    After the pre-purge and ignitor heat- you may need to consult with a qualified engineer or up time, the main gas terminals will be energized, Laars Applications Engineering. attempting to light, for four (4) seconds, and then “Parallel Piping”...

  • Page 38: Programming

    • Advanced control (with each Pennant) units, the boiler mounted pump continues to run for the capability • No outdoor reset • Parallel piping (non- • Laars outdoor reset primary/secondary) sensor (optional hydronic system part #R2014000) • Advanced control capability •...
  • Page 39 “PMP” “PMP” terminals (see Section 5.2). These terminals can power a contactor for a larger EXAMPLE 1 system pump. Laars recommends a minimum pump DHW (Mode 3) Programming. For domestic delay setting of 5 minutes. See Section 6.4.6 for more hot water systems up to 175°F / 79°C, use mode 3 as...

  • Page 40: Choosing The Mode For Your Application

    F° F° °C Mode 3: Laars R2014800 sensor installed in the domestic hot water storage tank. Step 4: See Section 6.4.11 Limit Controls. Set The Pennant ships with a jumper between the both high limit controls at least 25°F / 14°C higher “Com D”...
  • Page 41 S” and “S C2” terminals. Install a “supply sensor” in “ComD” and “HtD” terminals on the field wiring panel the primary loop using the Laars part number and connecting a zone valve or zone pump end switch, R2014800 sensor (included with every Pennant unit).

  • Page 42: Advanced Topics

    LAARS Heating Systems Page 42 Interstage Differential (STG DIFF STG DIFF STG DIFF STG DIFF STG DIFF) – The 6.4 Advanced Topics interstage differential is the temperature drop at which For most installations, Section 6.3 provides all the next stage will turn on. Once a stage turns on, the...

  • Page 43: Boiler Minimum (Boil Min)

    Pennant ( 500-2000 ) Page 43 next stage. After the minimum time delay between use as a target temperature. During mild conditions, if stages has expired, the control examines the control the control calculates a target temperature that is error to determine when the next stage is to fire. The below this setting, the target temperature is adjusted to control error is determined using PID logic.

  • Page 44: Setpoint Operation

    LAARS Heating Systems Page 44 pump operation is continuous. Also, during outdoor ratio is determined from the Boiler Start, Boiler reset, with the pump delay set to , the pump Design, Outdoor Start and Outdoor Design settings. continues to run even during Warm Weather Shut Heat Demand –...
  • Page 45 Pennant ( 500-2000 ) Page 45 the boiler zones when the outdoor air is as cold as the OUTDR DSGN temperature. WWSD WWSD WWSD WWSD) – When the Warm Weather Shut Down (WWSD outdoor air temperature rises above the WWSD setting, the control turns on the WWSD segment in the display.

  • Page 46: External Boiler Operation

    LAARS Heating Systems Page 46 6.4.10 External Boiler Operation 6.5 Operating the Burner and Set Up When mode 6 is selected, the control allows for 6.5.1 Set Up for 0 to 2500 Feet Altitude an external control to operate the Pennant’s stages. In...

  • Page 47: High Altitude Adjustment And Set Up

    Pennant ( 500-2000 ) Page 47 appliance. The ignition sequence will start being adjusted is energized by a call for heat from the again and the burner will start. The staging control. appliance will return to its previous mode After all of the gas valve manifold pressures of operation.

  • Page 48: Maintenance

    Component Description order. Ensure o-rings are properly installed for both inlet and outlet. Turn on manual gas shutoff valve and Only genuine Laars replacement parts should be used. 120 volt power and check appliance operation and tightness of gas valve connections.

  • Page 49: Temperature Control

    Replace transformer in the reverse order. 7.2.6 Temperature Control The temperature control is a Laars LHSC. To 7.2.11 Blowers replace the control, shut off the 120-volt power to the The combustion air blowers bring the combustion appliance.
  • Page 50 Scale can build up on the inner surface of the heat exchanger tubes, which can restrict water flow. If the tubes show signs of scaling, clean the internal surface. Laars offers a tube cleaning kit part number R0010000. 11. Reassemble in the reverse order, and check appliance operation after start-up.

  • Page 51: Trouble Shooting

    Pennant ( 500-2000 ) Page 51 controller setup. Contact your Laars representative to SECTION 8. discuss possible remedies. Trouble Shooting 8.4 Short Cycling — Water Heater 8.1 Resolving Lockouts Short cycling will generally occur only in There are many causes of lockouts. The three...
  • Page 52 LAARS Heating Systems Page 52 models (500 and 750), one 3-stage model (1000), and terminals of either ignition module. The 24V power to four 4-stage models (1250 to 2000). The 2-stage the T’STAT terminal of both ignition modules is models have one ignition module, and the 3- and 4- routed through the safety interlocks.
  • Page 53 Pennant ( 500-2000 ) Page 53 Table 12. Troubleshooting Error Codes.

  • Page 54: Replacement Parts 9.1 General Information

    LAARS Heating Systems Page 54...
  • Page 55 Pennant ( 500-2000 ) Page 55...
  • Page 56 LAARS Heating Systems Page 56...
  • Page 57 Pennant ( 500-2000 ) Page 57...
  • Page 58 LAARS Heating Systems Page 58...
  • Page 59 Pennant ( 500-2000 ) Page 59...
  • Page 60 LAARS Heating Systems Page 60 NOTE: Model 2000 shown for reference. BASE SHOWN FOR REFERENCE Figure 33. Sheet Metal Components.
  • Page 61 Pennant ( 500-2000 ) Page 61 Electrical Components for detail. Figure 34. Internal Components.
  • Page 62 LAARS Heating Systems Page 62 See pump chart below for pump numbers. Pennant Water Heater Pennant Hydronic PUMP P/N SIZE Soft Water Normal Water Hard Water SIZE PUMP P/N A2001700 A2001700 A2001900 A2001700 A2001700 A2001700 A2001900 A2001700 1000 A2001700 A2001800...
  • Page 63 Pennant ( 500-2000 ) Page 63 Figure 36. Electrical Components.
  • Page 64 Laars Heating Systems Company reserves the right to change specifications, components, features, or to discontinue products without notice. ® 800.900.9276 • Fax 800.559.1583 (Customer Service, Service Advisors & Technical Support) 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 (Applications Engineering) 1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 •...

This manual is also suitable for:

Pennant pncvPennant pnch seriesPennant pncv seriesPennant pnch0500Pennant pnch0750Pennant pnch1000 ... Show all

Table of Contents

Save PDF