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AquaStar 125B NG manual

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Table of contents for the manual

  • Page 1

    W ARNING : Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual. For assistance or additional information consult a qualified installer , service agency or the gas supplier . Upon completion of the installation, these instructions should be handed to the user of the applianc[...]

  • Page 2

    2 This well engineered, gas water heater has all the fea- tures a water heater should have: It operates on the principle of heating water instantaneously “on demand”. When a hot water faucet is opened, cold water flows through the coils of the heat exchanger in the Aquastar . This same flow opens the gas valve, and the burners are ignited by th[...]

  • Page 3

    3[...]

  • Page 4

    4 If you are using the AquaStar for combined space heating and potable water heating (see schematic diagram below) , all piping and other components connected to the system must be suitable for potable water , (b) toxic chemicals such as those commonly used for boiler treatment to prevent corrosion and freezing must not be introduced into the syste[...]

  • Page 5

    5 4. Y ou must vent your heater. See section on V ent Pipe Connections, Page 5. 5. The appliance must be disconnected from the gas supply piping system during any pressure testing at pressures in excess of 1/2 Psig (3.5 kPa). The appliance must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any p[...]

  • Page 6

    6 CLEARANCES The Aquastar 125 B is design certified for installation on a combustible wall and for installation in an alcove with the minimum clearances to combustible and non -combustible construction listed below A. T op 12 inches ( 305 mm) B. Front Open C. Back 0 inches D. Sides 4 inch (102mm) E. Bottom 12 inches (306 mm) Clearance from vent is [...]

  • Page 7

    7 The flue connection for the AquaStar 125B is 5 inches. However , in Canada, for installations at high altitude (2000- 4500 feet above sea level) a six inch flue is required. A 5" by 6" flue adaptor must be affixed to the flue collar of the AquaStar with at least two screws. See figure 3 Fig. 3 - Flue Adaptor for High Altitude Installati[...]

  • Page 8

    8 OPERA TING INSTRUCTIONS Before proceeding with the operation of the heater make sure that the system is filled with water . Make sure the water heater drain plug is closed. See Figure 7 below . Fig. 7 - W ater heater drain plug Open the cold water inlet supply to the heater fully . Open a hot water faucet to permit the water to fill the heater an[...]

  • Page 9

    9 LIGHTING INSTRUCTIONS 1. STOP! Read the safety information above on this plate. 2. The Gas valve must be turned off by sliding the gas valve button to the far left under the OFF ( ) mark. 3. W ait five (5) minutes to clear out any gas. If you smell gas, STOP! Follow “B” in the safety information above on this plate. If you don’t smell gas, [...]

  • Page 10

    10 TROUBLE SHOOTING Introduction The AquaStar 125 burners are activated by a water flow valve. Numerous water related problems can cause this water valve to malfunction such as: Insufficient water flow volume to activate the burners at its minimum flow requirement; Dirt in the water flow valve causing it to malfunction; Sediment build-up in faucet [...]

  • Page 11

    11 6 . Faulty thermocouple (part #8747202083) or electromagnet ) Unless these 2 parts are at least 8 to 10 years old, it is very unlikely that they are faulty . Before testing, reconfirm that #2 is absolutely correct, and that all connections are clean and tight. T o test the thermocouple, disconnect the thermocouple lead to the ECO. Insert a multi[...]

  • Page 12

    12 PILOT LIGHT GOES OUT DURING OR IMMEDIA TEL Y AFTER HOT W A TER HAS BEEN USED 1. Gas pressure too low V ery low gas pressure may be caused by low delivered gas pressure, a jammed gas regulator or undersized gas lines. If the gas lines are undersized, there may still be the specified static gas line pressure. However when the water valve opens, an[...]

  • Page 13

    13 Fig. 1 1 - Diagram of AquaStar 125 B 5 11 1 4 9 10 1. Heat exchanger 2. Pilot assembly 3. Burner manifold gas pressure test nipple 4. Main gas burner 5. Pilot gas tubing 6. Gas valve 7. Pressure tap screw location 8. Gas control slide 9. Piezo igniter 10. W ater valve 1 1. T emperature adjustment selector 12. Gas inlet gas pressure test nipple 3[...]

  • Page 14

    14 Fig. 12 - INTERIOR COMPONENTS DIAGRAM AND P ARTS LIST[...]

  • Page 15

    15 Fig. 12 INTERIOR COMPONENTS DIAGRAM AND P ARTS LIST 125B 1 Cover ¤ 8 705 421 025 2 Plastic collar ¤ 8 700 403 008 3 T emperature adjustment knob ¤ 8 702 000 1 1 1 4 Panel back ¤ 8 705 402 164 5 Draft divertor ¤ 8 705 505 354 6 Heat exchanger ¤ 8 705 406 235 7 Hot water pipe ¤ 8 700 705 556 8 Cold water pipe ¤ 8 700 705 294 9 Heat exchang[...]

  • Page 16

    Replacement Parts available from North American Distributor CONTROLLED ENERGY CORP . 340 Mad River Park V ermont 05673 (U.S.A.) Phone 800-642-31 1 1 Fax (802) 496-6924 WWW .CECHOT .COM VULCANO T ermodomésticos S.A. Estrada de Cacia 3800 Cacia - PORTUGAL Recycled paper techsupport@cechot.com GA S LINE SIZE Natural Gas Nominal Iron Pipe Size* 1/2&qu[...]