Ao-smith 404 Manuel d'utilisateur

1PRINTED IN U.S.A. 0906COPPER BOILERS FORHYDRONIC HEATING ANDHOT WATER SUPPLY CAUTIONTEXT PRINTED OR OUTLINED IN RED CONTAINSINFORMATION RELATIVE

10POWER VENT (OPTIONAL)The length of vent used in horizontally vented installations can beextended beyond the lengths shown in Tables 11 and 13 byimpl

11Figure 5. Vent Termination Installation Clearances CAUTIONDIRECT VENTING INTO DEAD AIR SPACESSUCH AS ALLEYS, ATRIUMS AND INSIDECORNERS CAN CAUSE REC

12STANDARD VENT - VERTICAL (CATEGORY I)IMPORTANT!VENT PRESSURE MUST BE MAINTAINEDBETWEEN -0.02" W.C. AND -0.04" W.C. AT 24"(61.0 cm) AB

13TABLE 11. STANDARD HORIZONTAL VENTING (CATEGORY III)STANDARD VENT - HORIZONTAL (CATEGORY III)WARNING: No substitutions of flue pipe or vent cap mat

14DIRECT VENT - VERTICAL (CATEGORY I)TABLE 12. DIRECT VENT (VERTICAL EXHAUST CONFIGURATIONS)• Connection for the appliance exhaust vent to the stack

15DIRECT VENT - HORIZONTAL (CATEGORY III)WARNING: No substitutions of flue pipe or vent cap material are allowed. Such substitutions would jeopardiz

16HYDRONIC INSTALLATIONThe following is a brief description of the equipment required forinstallations noted in Figure 10. All installations must comp

17Large systems with multiple boilers should include main watertemperature controls (with or without outdoor reset) to sequence theboiler on and off,

18related to approximate water volume of the system. The systemshould be turned on to circulate water mix for about one hour andthen flush clean with

19ONE GENESIS (MODEL GW) HOT WATER SUPPLY BOILER WITH HORIZONTAL TANKFigure 12. Tank probe installation.PRESSURE RELIEF VALVE RATING SHOULDNOT EXCEED

2DIMENSIONS/CAPACITIES DATAFigure 1.IMPORTANT!Refer to "Installation Clearances" section of manual(page 7) for recommended service clearance

20ONE GENESIS (MODEL GW) HOT WATER SUPPLY BOILER WITH VERTICAL TANKFigure 13. Single boiler with vertical tank.PRESSURE RELIEF VALVE RATING SHOULD NO

21TABLE 15. Suggested Pipe Size For Multiple Gas Appliances (Natural)TABLE 16. Suggested Pipe Size For Multiple Gas Appliances (Propane Gas)Length o

22Where it is necessary to use more than the average number ofpipe fittings i.e. elbows, tees, and valves in gas supply line, usea pipe larger than sp

23GB/GW 2100GB/GW 2500GB/GW 1000 - 1500GAS MANIFOLD ASSEMBLYGB/GW 1850Figure 14. GB/GW 1000 - 2500 Gas Manifold Assembly Diagrams.

24GENESIS GB/GW 1000-2500 SERIES 400 WIRING DIAGRAMFIGURE 15.

25

26GENESIS GB/GW 1000-2500 SERIES 400 SCHEMATIC DIAGRAMFIGURE 16.

27

28Figure 17. CCB CENTRAL CONTROL BOARD

29Figure 18. FCB FLAME CONTROL BOARD Diagram

3DIMENSIONS DATA FOR OUTDOOR CONFIGURATIONFigure 2.TABLE 3. DIMENSIONAL DATAAB C D E F G HJModel Inches cm Inches cm Inches cm Inches cm Inches cm Inc

30Figure 19. PDB POWER DISTRIBUTION BOARD Diagram

31Fuse ProtectionThe 24VAC circuitry is protected with a 3 amp fuse on the FlameControl Boards (FCB) and a 7.5 amp fuse on the Central ControlBoard. I

32Lighting Instructions for the G(B/W) 1000 through 2500 modelsA. THIS APPLIANCE DOES NOT HAVE A PILOT. IT ISEQUIPPED WITH AN IGNITION DEVICE WHICHAUT

33Lighting Instructions for the G(B/W) 1000 through 2500 modelsFOR YOUR SAFETY READ BEFORE OPERATINGOPERATING INSTRUCTIONSTO TURN OFF GAS TO APPLIANCE

34TABLE 20. RISK OF SCALDS.TEMPERATURE TIME TO PRODUCE 2nd & 3rd SETTING DEGREE BURNS ON ADULT SKINOVER 170°F (77°C) NEARLY INSTANTANEOUS160°F

35required): The CCB accepts analog temperature inputs from upto three sensors (inlet, outlet and tank).• ECO input (CCB - required):The ECO (energy c

36CCB - Three position Dipswitch (Flame Control Section) SW2:This dipswitch is similar to the FCB dipswitches described below, but with only three swi

37Operating SequenceNOTE: The following sequence is based on a three-stage system.1. The EMC 5000 controller has four modes of operation: Initializati

38followed by 15-second inter-purge period, then the systemreturns to step 7, if the "Trial for Ignition" dipswitch is set forthree (3) trie

39• Menu Screen:Displayed when the user presses the "Menu" key. This screen isthe selection point for the other 9 screens.• Temperature Scr

4TABLE 5: PUMPING PERFORMANCE GUIDETABLE 4: RECOVERY CAPACITIES TEMPERATURE RISE - DEGREES °F (°C)Input Rating Water 40°F 50°F 60°F 7

40• Soft Fault State: (See "Fault Description" section for list of softand Auto Reset faults.)The CCB turns off the Powered Vent and the IRI

416. Use the UP or DOWN key to select the value you wish to enter.7. Touch the SELECT key to accept and store the new value.• Operating Differential S

42when an error is detected. It will also go to this screen uponpower-up if an error was still valid when power was turned off.NOTE: Errors are cleare

43“Low 24VAC” Voltage from transformer less than 18 vac Continuous Auto ResetCheck transformer output. Should be over 24vac. May be caused byexcessi

44PREVENTATIVE MAINTENANCEThis is an induced burner and the flame is not supposed to be directlyon the burner. The flame should be just above the burn

45After placing the boiler in operation, check the ignition system safetyshut-off devices for proper operation. To accomplish this with themain burne

46all of the hardness (lime). For this reason it is recommended that aregular schedule for deliming be maintained.The time between cleaning will vary

47NEW BOILER LIMITED WARRANTYA. O. Smith Corporation, the warrantor, extends the following LIMITED WARRANTY to the owner of this hydronic boiler:1. If

48500 Tennessee Waltz Parkway, Ashland City, TN 37015Phone: 800-433-2545www.hotwater.com E-Mail: [email protected]

5At times you may not be able to smell an LP gas leak. One causeis odor fade, which is a loss of the chemical odorant that gives LPgas its distinctiv

6DIFFERENTIAL PRESSURE SWITCHThe differential pressure switch ensures that a sufficient differentialexists between the air pressure in the pre-mix cha

7DRAIN VALVE (Not Supplied)Additional drain valves must be obtained and installed on each boilerand tank for draining purposes.SAFETY RELIEF VALVESYou

8the authority having jurisdiction, must be provided with a low watercutoff device either as a part of the boiler or at the time of boilerinstallation

9SEE FIGURE 6). AT LEAST TYPE B VENTING MUST BE USEDWITH THE STANDARD VENTING OPTION (thru-the-roof) USINGTHE NATIONAL FUEL GAS CODE VENT TABLES. TY