Manuale d’uso / di manutenzione del prodotto GWB9-075IH-2 del fabbricante Lennox International Inc.
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P/N# 240009449, Rev . A [07/2012] RET AIN THESE INSTRUCTIONS FOR FUTURE REFERENCE These instructions must be af fi xed on or adjacent to the boiler . GWB9-050IH-2 GWB9-075IH-2 GWB9-100IH-2 GAS-FIRED , DIREC T VENT , C ONDENSING, HO T W A TER BOILER INST ALLA TION INSTRUCTIONS PRODUCT LITERA TURE Lennox Industries Inc.
2 DIMENSIONS 2 2 Figure 1 - Boiler Dimensions.
3 INTRODUCTION Introduction • This appliance is a gas- fi red direct vent hot water boiler with cast aluminum boiler sections. • The heating system water absorbs large amounts of heat from the cast aluminum heat exchanger, cooling fl ue gases and causing condensation.
4 Installation shall conform to requirements of author- ity having jurisdiction or in absence of such require- ments: • United States • National Fuel Gas Code, ANSI Z223.1/NFPA 54 . • National Electrical Code, NFPA 70. • Canada • Natural Gas and Propane Installation Code, CAN/CSA B149.
5 Table 1 - SEA LEVEL RATINGS – NATURAL AND PROPANE GASES Model Input *(MBH) ++ Heating Capacity *(MBH) Net AHRI Rating *(MBH) Shipping Weight (lbs.) Flue Diameter 90-50 50 45 39 220 2” CPVC &.
6 Table 2 - 90 - 50/75/100 SERIES 2 NATURAL GAS MODEL 90-50 Stock Factory Btu V alue of Natural Gas++ Settings 750 850 950 1000 1050 Altitude in Ft. 0-5,000 5,000-10,000 Normal Input (MBH) 50 – – – – – Manifold Pressure In W .C. 2.5 4 4 3.5 2.
7 Table 3 - 90 - 50/75 SERIES 2 PROPANE GAS MODEL 90-50 Stock Factory Btu V alue of Propane Gas++ Settings 2300 2350 2400 2450 2500 Altitude in Ft. 0-5,000 5,000-10,000 Normal Input (MBH) 50 –– – – – Manifold Pressure In W .C. 2.5 3 3 2.5 2.
8 Boiler Sizing Check to be sure you hav e selected boiler with proper capacity before starting installation. AHRI Rating of boiler selected should be greater than or equal to calculated peak heating load (heat loss) for building or area(s) served by boiler and associated hot water heating systems.
9 Table 4 - Required Clearances Unit Combustible Clearance Accessibility , Cleaning, and Servicing T op 1” (26mm) 8” (204mm) Left Side 1 “ (26mm) 24” (610mm) Right Side 1 1” (280mm) - Base 1.
10 Condensate Drain Requirements • Pitch condensate drain line down to fl oor drain at mini- mum of ¼” per foot. External condensate pump (not furnished) may be used if fl oor drain is not available. • Condensate pump must be designed for fl ue gas con- densate application.
11 Clean the System First Before connecting boiler to heating system, clean and fl ush system thoroughly . V erify system is free of sediment, fl ux and any residual boiler water additiv es. Systems having antifreez e not recommended must be completely fl ushed to insure no old antifreeze remains.
12 NEAR BOILER PIPING Figure 2 - Single Zone Boiler Piping.
13 Figure 3 - Two Zone Boiler Piping With Zone Valves NEAR BOILER PIPING Multi-Zone Systems Multi-zone systems with two zones are typically piped as shown in fi gures 3 or 4. Multi-zone systems with more than two zones are likely to have small zones with very low heat and fl ow requirements compared to full heating capacity of the boiler.
14 Figure 4 - Two Zone Boiler Piping With Circulators NEAR BOILER PIPING.
15 NEAR BOILER PIPING Figure 5 - Primary/Secondary Piping And Wiring With Circulators And Domestic Hot Water.
16 NEAR BOILER PIPING Figure 6 - Piping and Wiring Primary/Secondary Multi Zone System Piping With Zone Valves And Domestic Hot Water (With Zone Valve).
17 NEAR BOILER PIPING Figure 7 - Piping And Wiring Primary/Secondary Piping With Zone Valves And Domestic Hot Water (With Circulator).
18 Safety Relief Valve Installation of safety relief valv e shall conform to ANSI/ ASME Boiler and Pressure V essel Code, Section IV . • Install furnished safety relief valve using 3/4” x 4½” pipe provided with boiler. See Figure 8 . • Install safety relief valve with spindle in vertical position.
19 Figure 9 - Diaphragm Type Expansion Tank Piping NEAR BOILER PIPING.
20 Figure 10 - Conventional (Closed Type) Expansion Tank Piping NEAR BOILER PIPING.
21 Condensate Drain Piping Boiler is factory equipped with a condensate trap . An additional trap is not required and should NO T be used. 1. Provide ½” PVC condensate drain and fi ttings. Condensate drain to be pitched down to fl oor drain at a minimum of ¼” per foot.
22 Connections And Termination Provisions for combustion and ventilation air must be in accordance with section, Air For Combustion and V entilation, of the National Fuel Gas Code,ANSI 2223.1/ NFPA54, or Sections 8.2, 8.3 or 8.4 of National Gas and Propane Installation Code, CAN/CGA-B 149.
23 • Under certain conditions, fl ue gas will condense, forming moisture, and may be corrosive. Take steps to prevent building materials at vent from being damaged by exhaust of fl ue gas. • Vent shall not terminate where it may cause hazardous frost or ice accumulations on adjacent property surfaces.
24 Figure 12 - Roof Vent / Intake Terminations COMBUSTION AIR AND VENT PIPE VENT AIR INTAKE.
25 Figure 13 - Side Wall Vent / Intake terminations - Less Than 12” Clearance Above Grade Figure 14 - Side Wall Vent/Intake Terminations - 12” Or More Clearance Above Grade COMBUSTION AIR AND VENT.
26 Figure 15 - Concentric Vent Terminations Combustion Air V ent 1" (2.54cm) Maximum Maintain 12" clearance abov e highest anticipated snow level or grade * See Note Below V ent Combustion Air 36"(0.
27 Figure 18 - Combustion Air and Vent Piping - Boiler Connections COMBUSTION AIR AND VENT PIPE 2” (50.8mm) DIAMETER VENT AND COMBUSTION AIR INTAKE PIPING - 21 feet maximum total equivalent length f.
28 Check Gas Supply Gas pipe to your boiler must be correct size for length of run and for total Btu per hour input of all gas utilization equipment connected to it.
29 Table 7 – Gas Pipe Sizes NA TURAL GAS Length of Pipe - Ft. Pipe Capacity - BTU Per Hour Input Includes Fittings 1/2” 3/4” 1” 1 1/4” 20 92,000 190,000 350,000 625,000 40 63,000 130,000 245,000 445,000 60 50,000 105,000 195,000 365,000 PROPANE GAS Length of Pipe - Ft.
30 Electrically bond boiler to ground in accordance with requirements of authority having jurisdiction. R efer to: • USA- National Electrical Code, ANSI/NFPA 70. • Canada - Canadian Electrical Code, Part I, CSA C22.1: Safety Standard for Electrical Installations.
31 Figure 20 - Wiring Schematic ELECTRICAL WIRING NOTICE If any of original wire as supplied with this appliance must be replaced, it must be replaced with type 105°C Thermoplastic wire or its equiva.
32 Figure 21 - Ladder Wiring Diagram ELECTRICAL WIRING.
33 Figure 22 - Suggested Wiring Schematic for Domestic Hot Water Priority Two Zone System with Circulators Using Argo AR822II Pump Relay ELECTRICAL WIRING.
34 Figure 23 - Ladder Diagram for Figure 22 ELECTRICAL WIRING.
35 This section provides a brief description of the key controls and accessories found in this boiler . See Figure 26, Page 41 for detailed sequence of operation. See the Repair P arts Manual for locations of all control components and accessories described.
36 Casting Temperature Safety Switch In event of lack of or loss of water in boiler , Casting T emperature Safety Switch (300 °F setpoint) installed on top of the aluminum boiler section shuts off boiler by shutting off power to Integrated Boiler Control (IBC).
37 Water Quality, Water Treatment and Freeze Protection - see Appendix A Filling Boiler With Water And Purging Air For Systems With Diaphragm Type Expansion Tanks Refer to the appropriate diagr ams, “Near Boiler Piping” on page 11 for more information.
38 Stop! Read Safety information above. 1. Set thermostat to lowest setting. 2. Turn off all electric power to the appliance. 3. This appliance is equipped with an ignition device which automatically lights the burner. DO NOT try to light the burner by hand.
39 S9381A INTEGRATED BOILER CONTROL OPERATION AND ADJUSTMENTS S9381A control has a number of user adjustable parameters as shown in Table 8. Table 8 - User Parameters Adjusting Settings T o discourage unauthorized changing of settings, a procedure to enter the adjustment mode is required.
40 S9381A INTEGRATED BOILER CONTROL OPERATION AND ADJUSTMENTS Table 9 - State Code De fi nitions.
41 S9381A INTEGRATED BOILER CONTROL OPERATION AND ADJUSTMENTS Figure 26 - Sequence of Operation.
42 First couple of cold starts may be rough due to gas line not being completely purged of air , causing low fi ring r ate and high excess air levels. Inspect Venting And Air Intake System Operate boiler and v erify all vent/air intake connections are gas-tight and watertight.
43 CHECK OUT PROCEDURE AND ADJUSTMENT F. After adjusting input rate, turn boiler off, remove manometer or pressure gauge, reinstall ⅛ ” plug on gas valve. Turn boiler on. G. Boiler should typically operate between: • 8.5% -10.0% CO2 on Natural Gas • 9.
44 Following steps and diagr am indicate location of the connection points required to measure manifold pressure. Manifold pressure may be measured using a U- T ube Manometer or Differential Pressure Gauge. Diagram shows connection of both measuring devices.
45 Maintenance As Outlined Below Can Be Performed By Owner Unless Otherwise Noted. • The acidic nature of fl ue gasses condensing on aluminum boiler sections may cause formation of aluminum oxide.
46 K. Reinstall burner and mixer gasket and position mixer assembly over studs. Install fi ve (5) nuts but do not tighten. Reinstall igniter and igniter gasket and fasten with two (2) screws. Use care when installing the igniter. Tighten fi ve (5) nuts holding mixer assembly.
47 Important 1. In reset from lockout condition, all electrical meter readings at the gas control valve (24 vac) must be taken within trial for ignition period. 2. If any component does not function properly, make sure it is correctly installed and wired before replacing it.
48 TROUBLESHOOTING Table 10 - Error Codes.
49 • Following steps and diagram indicate locations of connection points required to check differential air pressure. • Differential air pressure switch is safety device which prevents boiler from fi ring if there is air intake, boiler heat exchanger or vent blockage.
50 Aluminum Series High Ef fi cien c y Gas -Fired B o i ler D I ELECTR I C ISOL A T I ON & AN TIFREEZE PR O TECT I ON ADDENDUM APPENDIX A - WATER QUALITY, WATER TREATMENT AND FREEZE PROTECTION WA.
51 System and Operating Precautions Applies to ALL Aluminum High Ef fi ciency Gas-Fired Water Boilers Eliminate System Leaks Continuous addition of make-up water will constantly add oxygen to system. Eliminate all system leaks. All system leaks must be repaired immediately .
52 System and Operating Precautions Applies to ALL Aluminum High Ef fi ciency Gas-Fired Water Boilers General Guidelines When Using Antifreeze • Use only antifreeze products recommended for use with aluminum boilers, as listed in this addendum. See Table 11.
53 Compatible Aluminum Antifreeze & Inhibitor Suppliers Noburst AL Antifreeze Noble Company P . O. Box 350 Grand Ha ven, MI 49417 www .noblecompany .com T el: 800-878-5788 F ax: 231-799-8850 Rhogard Antifreeze & Pro-Tek 922 Inhibitor* Rhomar W ater Management, Inc.
54 INSTALLATION AND CHECK-OUT CERTIFICATE Boiler Model Serial # Date Installed___________ Measured BTU/HR input____________ Installation instructions have been followed Checkout procedur.
55 NOTES.
PRODUCT LITERA TURE Lennox Industries Inc. Dallas, T exas Manufactured by: ECR International, Inc. 2201 Dwyer Avenue, Utica NY 13501 web site: www .ecrinternational.
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In una situazione in cui hai già il Lennox International Inc. GWB9-075IH-2, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Lennox International Inc. GWB9-075IH-2.
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