A.O. Smith HW 610 - Manuals

5 EXTRA OPENING FOR THERMOMETER AND RELIEF VALVE HW-520, 610 AND HW--670 DIMENSIONS AND CAPACITY DATA TABLE 1 DIMENSIONS IN INCHES MODELS HW-300 HW-399 HW-420 HW-520 PROPANE HW-610/670 NATURAL HW-610/670 A Overall height 65 (1651) 57-1/8 (1451) 57-1/8 (1451) 68-5/16 (1735) 67 (1702) 64-3/4 (1645) B ...

6 TABLE 2, RECOVERY CAPACITIES Model Input °F 20 40 50 60 70 80 BTUH (kW) °C 11.1 22.2 27.7 33.3 38.8 44.4 HW 300 300,000 (88) GPH 1439 719 576 480 411 360 LPH 5448 2724 2179 1816 1556 1362 HW 399 399,000 (117) GPH 1914 957 765 638 547 478 LPH 7245 3623 2898 2415 2070 1811 HW 420 420,000 (123) GPH 2...

7 INTRODUCTION This design complies with the current edition of the ANSI Z21.13 low-pressure boiler standard. Compliance under this standard implies that when the boiler underwent test, the gas manifold and control assembly pro vided on the boiler met safe lighting and other performance criteria. De...

8 HIGH ALTITUDE INSTALLATIONS IN CANADA Acceptance of these models for use at altitudes above 2000 feet (600 m) is based on field test of the individual installation by the provincial/state authority having jurisdiction. IN THE U.S.A. WARNING INSTALLATIONS ABOVE 2000 FEET REQUIRE REPLACEMENT OF THE ...

12 Water Temperature Time to Produce 2nd & 3rd Degree Burns on Adult Skin OVER: 170°F (77°C) 160°F (71°C) 150°F (65°C) 140°F (60°C) 130°F (54°C) 120°F (49°C) Nearly Instantaneous About 1/2 second About 1-1/2 seconds Less than 5 seconds About 30 seconds More than 5 minutes USE ANTI- SCALD VALVE(S...

14 INSTALLATION CLEARANCES These boilers are approved for installation on combustible flooring in an alcove with minimum clearance to combustibles of: TABLE 4 HW 300 HW 399 HW 420 HW 520 HW 610 & 670 TOP 28" (711.2) 32" (812.8) 24" (609.6) 24" (609.6) 24" (609.6) SIDES 6"...

18 1. CONVENTIONAL INSTALLATIONS All modern hydronic type boilers are exceptionally fast heating units. The low water volumes in relation to firing rates require special attention to water flow rates for smooth, efficient operation. These considerations for the A. O. Smith copper heat exchanger boil...

20 5. VENT VALVES It is recommended that automatic, loose key or screwdriver type vent valves be installed at each convector or radiator. 6. MANIFOLD HEADERS Split systems with individual supply and return lines from the boiler room should normally have this piping connected to supply and return man...

23 Adjustment, if required, is performed as follows: 1. Set primary system temperature control dial (thermostat) at lowest setting so that boiler will not call for heat. 2. Attach a pressure gauge to the tapping in the control string elbow. 3. Reset primary system temperature control dial (thermosta...

28 CER-TEMP 80 - 1 UNIT INSTALLATION - FOR HOT WATER SUPPLY APPLICATION CANADIAN MODELS, JUNCTION BOX W/6 TERMINALS FIGURE 21. FIGURE 23. CER-TEMP 80 - 1 UNIT INSTALLATION - FOR HOT WATER SUPPLY APPLICATION U.S. MODELS, JUCNTION BOX W/4 TERMINALS FIGURE 22.

30 SCHEMATIC CANADIAN MODELS, JUNCTION BOX W/6 TERMINALS FIGURE 25.

31 CER-TEMP 80 - 2 OR 3 UNIT INSTALLATION CONNECTION DIAGRAM (FOR HOT WATER SUPPLY APPLICATION) U.S. MODELS, JUNCTION BOX W/4 TERMINALS FIGURE 26.

32 CER-TEMP 80 - 2 OR 3 UNIT INSTALLATION SCHEMATIC DIAGRAM (FOR HOT WATER SUPPLY APPLICATION) U.S. MODELS, JUNCTION BOX W/4 TERMINALS FIGURE 27.

33 FIGURE 28. IMPORTANT THE INSTALLATION OF SAFETY FLOW SWITCH AS SHOWN IS REQUIRED TO PROTECT THE BOILER IN CASE OF WATER SERVICE INTERRUPTION OR CIRCULATOR FAILURE. + PIPING AND FITTINGS BETWEEN GATE VALVES AND BOILERS SHOULD BE BRASS OR BRONZE. OTHER PIPING SHOULD CONFORM TO LOCAL CODES. GATE VAL...

39 WARNING After placing boiler into operation, the ignition system safety shutoff device must be tested by the following test method. 1. Reset High Limit Temperature Control to lowest setting. (See figure 2 on page 8). 2. Reset System Controller to maximum setting, causing a call for heat and allow...

43 FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: FLAMMABLE If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. C. D. WHAT TO DO IF YOU SMELL GAS DO NOT TRY TO LIGHT ANY APPLIANCE. DO NOT TOUCH ANY ELECTRIC SWITCH; ...

44 FOR YOUR SAFETY READ BEFORE OPERATING WARNING: FLAMMABLE If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A . B . THIS APPLIANCE IS EQUIPPED WITH AN IGNITION DEVICE WHICH AUTOMATICALLY LIGHTS THE PILOT. DO NO...

45 At the time of removal of an existing boiler, the following steps shall be followed with each appliance remaining connected to the common venting system placed in operation, while the other appliances remaining connected to the common venting system are not in operation. Seal any unused openings ...

46 CLEANING AND FLUSHING INSTRUCTIONS INTERNAL CONTAMINANTS The hydronic system must be internally cleaned and flushed after a new or replacement boiler has been installed to remove contaminants that may have accumulated during installation. This is doubly impor tant when a replacement boiler is ins...

47 TROUBLESHOOTING CER-TEMP 80 RECOVERY SYSTEM CHECKOUT PROCEDURE Use this checkout for Cer-Temp 80 Recovery Systems. (For hot water supply application only) Checkout Sequence System Operation Cause Remedy Contact Incorrect Set tank temperature control (thermostat) 20°F (10°C) below tank water tempe...

55 A. O. Smith Corporation, the warrantor, extends the following LIMITED WARRANTY to the owner of this boiler. 1. If within TEN years after initial installation of the boiler, a heat exchanger, coil or gas burner shall prove upon examination by the warrantor to be defective in material or workmanshi...