Laars 9600 HWG Installation, Operation And Maintenance Instructions
Laars 9600 HWG Installation, Operation And Maintenance Instructions

Laars 9600 HWG Installation, Operation And Maintenance Instructions

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Installation, Operation and Maintenance Instructions
Installation,
Operation and
Maintenance
Instructions for
9600 HWG
Condensing Water
Heater for Natural Gas
or Propane
Models
HWG-M2-150
HWG-M2-175
HWG-M2-200
HWG-M2-250
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.
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.
WARNING
A subsidiary of BRADFORD WHITE Corporation
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 2108C

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Summary of Contents for Laars 9600 HWG

  • Page 1 Installation, Operation and Maintenance Instructions Document 2108C Installation, Operation and Maintenance Instructions for 9600 HWG Condensing Water Heater for Natural Gas or Propane Models HWG-M2-150 HWG-M2-175 HWG-M2-200 HWG-M2-250 FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician, qualified in hot water boiler installation and maintenance.
  • Page 2: Table Of Contents

    Anti-Freeze ..........11 SECTION 2. SECTION 5. Locating and Clearances Maintenance Locating the 9600 HWG ....... 4 Owner Care and Maintenance ....11 Locating the Unit for Proper Venting Routine De-Liming Procedure ..... 11 Distance from the Outside Wall or Therostat Replacement ......
  • Page 3: Introduction And Unpacking

    Direct vent-sealed combustion. 3-inch or 4-inch PVC schedule 3-inch or 4-inch PVC schedule The 9600 HWG Water Heater does not and 40 pipe per ASTM D-1785 std. 40 pipe per ASTM D-1785 std. should not take combustion air from inside the...
  • Page 4: Unpacking

    LAARS Heating Systems Page 4 1.3 Unpacking Minimum Recommended The 9600 HWG Water Heater is shipped in a Clearances Clearance for single carton with the following standard components From Accessibility on top of the unit (see Figure 1). Combustible and Venting...
  • Page 5: Locating Vent Openings On Outside Wall

    Since the level must be above the level of the wall. 9600 HWG Water Heater is designed to drain any If flue passes through a sloped or water that collects in the vent, it is important that you...
  • Page 6: Connecting Gas To The 9600 Hwg Water Heater

    Run gas supply line in accordance with all Begin piping to the tank from the hot water applicable codes. outlet at the top of the 9600 HWG cabinet. Locate and install manual shutoff valves in accordance with state and local requirements.
  • Page 7: Tank Temperature Control

    (see Figure 9). 3.4 Tank Temperature Control The 9600 HWG is turned on and off by a remote Run this condensate relief tube through the hole tank aquastat. Locate the aquastat above the cold in cabinet and to a drain pan.
  • Page 8 LAARS Heating Systems Page 8 Figure 6. Single 9600 HWG & Storage Tank. Figure 7. Two temperature system.
  • Page 9 9600 HWG Water Heater Page 9 Figure 8. Multiple 9600 HWG's & storage tanks.
  • Page 10: Main Power

    Set aquastat to call for heat, turn on power at Changing the gas orifice. main switch for 30 seconds, then turn off. A 9600 HWG tune-up kit is available from your Bleed 9600 HWG Water Heater and system supplier. It contains a larger (marked +) and again.
  • Page 11: Anti-Freeze

    Any time a Isolate the 9600 HWG unit from the system by heater is subjected to freezing conditions, and the closing the shutoff valves. If recirc. lines are piped, heater is not able to fire, and/or the water is not isolate the return system from water heater.
  • Page 12: Therostat Replacement

    LAARS Heating Systems Page 12 Shut off pump and disconnect from hose. Carefully drain solution from hoses and connect city water to lower hose to flush combustion coil. Flush for approximately 5 minutes with city water. Remove hoses, close drain cock, close drain on cold / return, and replace lower front panel .
  • Page 13: Combined Water (Potable) Heating And Space Heating

    9600 HWG Water Heater Page 13 5.6 Combined Water (potable) Heating and Space Heating (see Figure 15) Piping and components connected to this water heater for the space heating application shall be suitable for use with potable water. Toxic chemicals, such as used for boiler treatment, shall not be introduced into the potable water used for space heating.
  • Page 14: S9301A Control Module

    LAARS Heating Systems Page 14...
  • Page 15 9600 HWG Water Heater Page 15 Figure 16. Wiring diagram. “Caution: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.” Verify Proper Operation After Servicing! Figure 17. Ladder diagram.
  • Page 16 LAARS Heating Systems Page 16 Figure 18. Lighting and shutdown procedures.
  • Page 17: 9600 Overheats Quickly Or Knocks During Operation

    Condensing in primary heat exchanger or Pump failure or control failure. moisture in combustion chamber. 9600 HWG lime buildup in primary heat defective element in thermostatic valve. exchanger. improper installation of intake terminal. Restriction in storage tank piping.
  • Page 18: Replacement Parts List

    LAARS Heating Systems Page 18 SECTION 7. Replacement Parts List Part Number Description 2400-322 Gasket Kit 2400-079 Blower Assembly (#5) 2400-310 Blower Assembly (HWG-250) 2400-086 Combustion Coil Assembly (#9) 2400-082 Flame Holder (#7) 2400-308 Flame Holder (HWG-250) 2400-286 Ignitor 2400-088...
  • Page 19 9600 HWG Water Heater Page 19...
  • Page 20 (Customer Service, Service Advisors) 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 (Applications Engineering) 1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130 www.Laars.com Litho in U.S.A. © Laars Heating Systems 0810 Document 2108C...

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