Laars HWG-M2-150 Installation, Operation And Maintenance Instructions

Other manuals for HWG-M2-150: Service Manual
Manual is about: HWG-M2 Series, CB-M2 Series, Hot Water Generator For Natural or Propane Gas, Condensing Boiler For Natural or Propane Gas

Summary of HWG-M2-150

  • Page 1

    Installation, operation and maintenance instructions document 2108a 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 ...

  • Page 2

    Page 2 laars heating systems to the installer: after installation these instructions must be given to the owner or left on or near the water heater. To the user: this booklet contains important information that will help you in maintaining and operating this water heater. Please retain it for future...

  • Page 3

    9600 hwg water heater page 3 section 1. Introduction & unpacking 1a. Special installation considerations before you begin: it is important for you to take a few minutes to review this installation and operating instructions manual before you begin installation. This will make installing and operatin...

  • Page 4

    Page 4 laars heating systems figure 2. Suggested vent terminal installations. Section 2. Locating and clearances 2a. Locating the 9600 hwg the appliance should be located in an area where leakage of any connections will not result in damage to the area adjacent to the appliance or to lower floors of...

  • Page 5

    9600 hwg water heater page 5 2c. Locating vent openings on outside wall 1. Exhaust terminal location. The exhaust terminal fitting requires a 4" (10cm) diameter hole through the outside wall. The center line of this opening must be at least 16" (41cm) above grade and at least 14" (35.6cm) from any o...

  • Page 6

    Page 6 laars heating systems length capacity of pipe in mbtu/h of (.6 specific gravity) pipe 3/4" 1" 1-1/4" 10' 278 520 1,050 20' 190 350 730 30' 152 285 590 40' 130 245 500 50' 115 215 440 75' 93 175 360 100' 79 150 305 150' 64 120 250 additional length to be added for each tee or bend: 1.7' 2.2' 2...

  • Page 7

    9600 hwg water heater page 7 note: a listed temperature and pressure relief valve listed as complying with the standard for relief valves and automatic gas shutoff devices for hot water supply systems, 1). Ansi z21.22 latest edition, or 2). Can / cga 1 - 4.4, of suitable discharge capacity must be i...

  • Page 8

    Page 8 laars heating systems figure 7. Two temperature system. Figure 6. Single 9600 hwg & storage tank..

  • Page 9

    9600 hwg water heater page 9 figure 8. Multiple 9600 hwg's & storage tanks..

  • Page 10

    Page 10 laars heating systems figure 9. Condensate drain tube outlet. Section 4. Start up 4a. Filling the system 1. Open all valves. 2. Fill 9600 hwg water heater and the system completely. 3. Purge air from system. Bleed air from 9600 hwg using the air bleed at top of thermostatic valve inside unit...

  • Page 11

    9600 hwg water heater page 11 9. Using the temperature gauge, check the unit outlet temperature after three to four minutes of operation. Minimum operating temperature 160°f. 10. Shutdown instructions. Turn off all electrical power to the unit at main power switch located on field wiring box cover. ...

  • Page 12

    Page 12 laars heating systems figure 11. Manual gas shutoff. Figure 12. Gas orifice union. 2. Check the condition of the internal vent fittings and hose and replace as necessary. 3. Check the condensate drain lines for blockage and optional condensate pump for proper operation. 5e. Cleaning combusti...

  • Page 13

    9600 hwg water heater page 13 figure 15. Typical installation. Section 6. Quick reference trouble shooter 6a. Short cycling 1. Tank aquastat set too high 2. Units shut down before reaching limit. Continuously restarts without resetting a.) limit out of calibration b.) wrong air/gas orifices for inpu...

  • Page 14

    Page 14 laars heating systems normal sequence event control function verified light confirms event a. Power switch on. Integrated boiler control (s9301a). Green "power" light on. Note: if internal pump is running unit may be in lockout. Reset power switch. B. Pre-purge low limit aquastat or thermost...

  • 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

    Page 16 laars heating systems figure 18. Lighting and shutdown procedures..

  • Page 17

    9600 hwg water heater page 17 section 7. Replacement parts list note: reference page 15 for electrical components figure 19. Control box. (1) thermostatic valve (2) circulator (3) mixer tube (4) exhaust pipe (5) blower (6) gas valve (7) burner (8) economizer (9) combustion coil (10) water inlet from...

  • Page 18

    Page 18 laars heating systems.

  • Page 19

    9600 hwg water heater page 19.

  • Page 20

    10-427a waterpik technologies, inc. 6000 condor drive, moorpark, ca 93021 • 805.529.2000 • fax 805.529.5934 20 industrial way, rochester, nh 03867 • 603.335.6300 • fax 603.335.3355 480 s. Service road west, oakville, ontario, canada l6k 2h4 • 905.844.8233 • fax 905.844.2635 www.Laars.Com litho in u....