1 1 1 1 1 place these instructions adjacent to boiler and notify owner to keep for future reference a division of a.O. Smith corporation mc bee, sc seattle, wa stratford, ontario veldhoven, the netherlands w w w.Hotwater.Com part no. 211683-000 rev.02 printed in u.S.A. 0905 supersedes part no's, 210...
2 2 2 2 2 rough-in dimensions table 2, specifications - canadian models only maximum maximum i.A.S. Maximum max. Heat transfer max. Heat transfer model type of gas btuh(kw) btuh(kw) heat loss load surface area (sq. Ft.) surface area (sq. Ft.) hwb-300 natural & propane 300,000 (88) 247,200 (72) 210,1...
3 3 3 3 3 table 3, recovery capacities - canadian models only input temp. (c) 11 17 22 26 33 39 44 50 56 61 67 72 78 model (btu/hr.) rise (f) 20 30 40 50 60 70 80 90 100 110 120 130 140 hw-300 300,000 lph 5,505 3,670 2,753 2,202 1,835 1,573 1,376 1,223 1,001 1,001 918 847 786 gph 1,455 970 727 582 4...
4 4 4 4 4 caution text printed or outlined in red contains information relative to your safety. Please read thoroughly before using appliance. Detailed installation diagrams are in this manual. These diagrams will serve to provide the installer with a reference for the materials and method of piping...
5 5 5 5 5 location when installing the boiler, consideration must be given to proper location. Location selected should be as close to the stack or chimney as practicable with adequate air supply and as centralized with the piping system as possible. This location should also be such that the gas ig...
6 6 6 6 6 where an exhaust fan is installed in the same room with a boiler, sufficient openings for air must be provided in the walls. Undersized openings will cause air to be drawn into the room through the chimney, causing poor combustion. Sooting may result with an increased risk of asphyxiation....
7 7 7 7 7 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 exchang...
8 8 8 8 8 no. Suggested items for installation 1 short pipe nipple and pair of boiler loop tees in piping between system supply and return. One set per each group of boilers 2 boiler pipe loop. See piping sizing data above. 3 boiler circulator. See pump sizing data above. 4 thermometer. 5 theraltime...
9 9 9 9 9 excessive pressure may develop causing premature tank failure or intermittent relief valve operation. This is not a warranty failure. An expansion tank or a similar device may be required in the inlet supply line between the appliance and the meter or valve to compensate for the thermal ex...
10 10 10 10 10 2a. Sizing gas supply line (for single boiler installations and for installations of multiples of two or three of same size boilers). Use table 6, or can/csa b149.1-00 (latest recent edition) to size iron pipe or equivalent gas supply line. Table 6 is based on a pressure drop of 0.3 i...
11 11 11 11 11 • in table 6, select the row showing the distance to the most remote outlet or the next longer distance if the table does not give the exact length. This is the only distance used in determining the size of any section of gas piping. If the gravity factor is to be applied, the values ...
12 12 12 12 12 7. Set primary system temperature control dial (thermostat) to desired setting. Warning do not increase gas pressure above that specified on the rating plate, as overfiring will result in damage to the boiler, as well as increased risk of fire, sooting and asphyxiation. If gas pressur...
13 13 13 13 13 after it has been determined that each appliance remaining connected to the common venting system properly vents when tested as outlined above, return doors, windows, exhaust fans, fireplace dampers and any other gas burning appliance to their previous conditions of use. Any improper ...
14 14 14 14 14 model hw/hwb-610 boiler input: 610,000 btuh draft hood outlet 12" required connector or smoke pipe diameter connector total vent height(measured in feet above draft hood) rise in 10 15 20 30 40 50 60 80 100 feet connector diameter (in inches) 1 16 14 14 14 14 14 14 14 14 2 14 14 14 14...
15 15 15 15 15 venting maintenance - standard venting it is recommended that the heating surfaces and vent piping of the appliance be checked every six months for dust, deterioration and carbon deposits. Remove all soot or other obstructions from chimney and flue which will retard free draft. Replac...
16 16 16 16 16 the storage tank temperature and pressure (t & p) relief valve must comply with the applicable construction provisions of the standard for relief valves and automatic gas shutoff devices for hot water supply systems, z21.22 and/or can1-4.4. The t & p valve must be of the automatic res...
17 17 17 17 17 connection diagram hwb & hw-300, -399, -420, -500 & -610 (natural gas) single stage i.I.D. - robertshaw ® gas valve hwb & hw-300, -399, -420, -520, -610 (natural gas only) - canadian models figure 10 ® robertshaw is a registered trademark of fulton controls corp..
18 18 18 18 18 connection diagram hwb, hw-420,-520, -610 (propane gas) single stage propane - robertshaw gas valve 24 volt -hw, hwb-420, -520, -610 canadian models figure 11.
19 19 19 19 19 single stage propane robertshaw gas valve 24 volt - hwb, hw-300, 399 canadian models figure 11a connection diagram hwb & hw 300, 399 (propane gas) figure 13.
20 20 20 20 20 hw-300, hw-399, hw-420, hw-500 & hw-670 (natural gas) single stage i.I.D. - robertshaw gas valve hw-300, -399, -420, -520 & 670 (natural gas only) - u.S. Models figure 11b.
21 21 21 21 21 hw-300, hw-399, hw-420, hw-500 & hw-670 (propane gas) figure 12 single stage i.I.D. - robertshaw gas valve hw-300, -399, -420, -520 & 670 (propane gas only) - u.S. Models figure 11c.
22 22 22 22 22 2. Linear-temp installations control for these systems is decided mainly by the type of building system controlling that is desired. A single boiler installation might be controlled directly from space temperature thermostat(s). Multiple boiler installations are more effective when th...
23 23 23 23 23 note: 1. Building temperature controls supply electric power to building circulator. 2. Main flow switch proves main water flow before energizing sequencing and resetting controls. 3. Outdoor thermostat required if building controls do not provide automatic shutdown of reset controls ...
24 24 24 24 24 note: 1. Building temperature controls supply electric power to building circulator. 2. Main flow switch proves main water flow before energizing sequencing and resetting controls. 3. Outdoor thermostat required if building controls do not provide automatic shutdown of reset controls ...
25 25 25 25 25 cer-temp 80 - 1 unit installation - for hot water supply application canadian models, junction box w/6 terminals figure 17 figure 19 cer-temp 80 - 1 unit installation - for hot water supply application u.S. Models, jucntion box w/4 terminals figure 18.
26 26 26 26 26 cer-temp 80 - 2 or 3 unit installation - for hot water supply application canadian models, junction box w/6 terminals figure 20
27 27 27 27 27 figure 21 schematic canadian models, junction box w/6 terminals.
28 28 28 28 28 cer-temp 80 - 2 or 3 unit installation connection diagram (for hot water supply application) u.S. Models, junction box w/4 terminals figure 22.
29 29 29 29 29 cer-temp 80 - 2 or 3 unit installation schematic diagram (for hot water supply application) u.S. Models, junction box w/4 terminals figure 23.
30 30 30 30 30 figure 24 booster - recovery wiring diagram canadian models, junction box w/6 terminals shure-temp booster - recovery wiring diagram (two temperature system) canadian models, junction box w/6 terminals figure 25.
31 31 31 31 31 booster - recovery wiring diagram u.S. Models, junction box w/4 terminals figure 26 shure - temp booster - recovery wiring diagram two-temperature system u.S. Models, junction box w/4 terminals figure 27.
32 32 32 32 32 water line connections this section provides detailed installation diagrams for typical methods of application for the unit using a cer-temp 80 recovery system (for one temperature water), and either booster-recovery or the shure-temp booster-recovery system (for two temperature water...
33 33 33 33 33 use anti-scald valve(s) in the hot water system to reduce the risks of scalds at points of use such as lavatories, sinks and bathing facilities. A change in water temperature in the storage tank lower than the tank temperature control setting will cause the sensor to close its contact...
34 34 34 34 34 figure 29 important the installation of safety flow switch as shown is required to protect the boiler in case of water service interruption or circulator failure (a.O. Smith pkg. No. 211480). + piping and fittings between gate valves and boilers should be brass or bronze. Other piping...
35 35 35 35 35 figure 30 one hw-300, hw-399, hw-420, hw-520, hw-610 or one hw-670 up-flow model commercial boiler with horizontal tank wiring - figures 17, 18, 19 install in accordance with all local codes important the installation of safety flow switch as shown is required to protect the boiler in...
36 36 36 36 36 two hw-399's, hw-420's, hw-520's, hw-610's or hw-670's up-flow model commercial boiler with vertical tank, cer-temp 80 important the installation of safety flow switch as shown is required to protect the boiler in case of water service interruption or circulator failure (a.O. Smith pk...
37 37 37 37 37 figure 32 two hw-300's, hw-399's, hw-420's, hw-520's, hw-610's or hw-670's up-flow model commercial boiler with horizontal tank important the installation of safety flow switch as shown is required to protect the boiler in case of water service interruption or circulator failure (a.O....
38 38 38 38 38 three hw-520's, hw-610's or hw-670's up-flow model commercial boiler with vertical tank, cer-temp 80 important the installation of safety flow switch as shown is required to protect the boiler in case of water service interruption or circulator failure (a.O. Smith pkg. No. 211480). + ...
39 39 39 39 39 three hw-520's, hw-610's or hw-670's up-flow model commercial boiler with horizontal tank, cer-temp 80 important the installation of safety flow switch as shown is required to protect the boiler in case of water service interruption or circulator failure (a.O. Smith pkg. No. 211480). ...
40 40 40 40 40 figure 35 wiring - figure 25 or 27 install in accordance with all local codes booster recovery system (patented) two temperature system without recirculation one hw-300, hw-399, hw-420, hw-520, hw-610 or hw-670 up-flow model commercial boiler with vertical tank + piping and fittings b...
41 41 41 41 41 figure 36 booster recovery system (patented) two temperature system without recirculation one hw-300, hw-399, hw-420, hw-520, hw-610 or hw-670 up-flow model commercial boiler with horizontal tank wiring - figure 25 or 27 install in accordance with all local codes important the install...
42 42 42 42 42 figure 37 booster recovery system (patented) - two temperature system without recirculation one hw-300, hw-399, hw-420, hw-520, hw-610 or hw-670 up-flow model commercial boiler with horizontal tank + piping and fittings between gate valves and boilers should be brass or bronze. Other ...
43 43 43 43 43 4 flow regulating plug cock (for boiler flow rate adjustment) a slight closing of this valve may be necessary to set proper water flow rate for 40°f temperature rise through the boiler. Temperature rise is observed between the boiler inlet and outlet thermometers. 5 flow regulating pl...
44 44 44 44 44 figure 39 with two vertical tanks with three vertical tanks danger temperature setting should not exceed safe use temperature at fixtures. See tank temperature control warning on page 32. If higher preheat temperatures are necessary to obtain adequate booster output, add an anti-scald...
45 45 45 45 45 two horizontal tank installation three horizontal tank installation figure 40 danger temperature setting should not exceed safe use temperature at fixtures. See tank temperature control warning on page 32. If higher preheat temperatures are necessary to obtain adequate booster output,...
46 46 46 46 46 important it is recommended that a qualified person perform the initial firing of the boiler. At this time the user should not hesitate to ask the individual any questions which he may have in regard to the operation and maintenance of the unit. Filling and venting 1. Fast fill system...
47 47 47 47 47 lighting and operating instructions (natural and propane gas with i.I.D.) warning: hot water can produce 3rd degree burns in 6 seconds at 140° f. (60° c). In case of power failure do not attempt to operate appliance. Improper installation, adjustment, alteration, service or maintenanc...
48 48 48 48 48 lighting and operating instructions propane (lp) standing pilot models warning: hot water can produce 3rd degree burns in 6 seconds at 140° f. (60° c). In case of power failure do not attempt to operate appliance. Improper installation, adjustment, alteration, service or maintenance c...
49 49 49 49 49 4. Adjust pilot flame. To adjust the pilot flame, remove the cap screw from the pilot adjusting valve and turn to deliver a sufficient flame at the pilot burner to cover 3/8" to 1/2" (10-12mm) of the sensing probe tip. See fig. 42. Figure 42 if the pilot burner ignites but the main bu...
50 50 50 50 50 figure 43d the purpose of checking the current ahead and after the protector switch is to measure the millivolt drop across the contacts. This drop should be between 4 and 6 millivolts. Protector switch continuity test do not depress the protector switch reset button prior to testing....
51 51 51 51 51 • if lamp does not light when reset button is depressed, attach the test flashlight leads to the protector switch terminals. If lamp does not light, switch is defective and must be replaced. • if lamp does light, the leads are bad and must be repaired or replaced. Checking and adjusti...
52 52 52 52 52 normal operating sequence with intermittent ignition controls (i.I.D.) 1. System control calls for boiler operation. 2. Spark begins at pilot burner. 3. Pilot gas control valve is energized. Gas flows to pilot burner. 4. Pilot burner gas ignites. The sensing probe on the pilot burner ...
53 53 53 53 53 protector switch figure 48 pressure reducing valve the screen in the pressure reducing valve may require occasional cleaning due to foreign material in the water supply. This will restrict the flow and could reduce the effectiveness of purging and prolong filling time. To inspect the ...
54 54 54 54 54 to adjust the flow rate setting: 1. Remove the flow switch cover. 2. For higher flow rate—turn the range adjusting screw clockwise. 3. For lower flow rate—turn the range adjusting screw counter-clockwise. Caution the switch is factory set at approximately the minimum flow rate, see ta...
55 55 55 55 55 general maintenance these boilers are designed to give many years of efficient and satisfactory service when properly operated and maintained. To assure continued good performance, the following recommendations are made. The area around the unit should be kept clean and free from lint...
56 56 56 56 56 the time between cleaning will vary from two to six months depending upon water conditions and usage. A change of approximately 5 0 f in the normal temperature rise through the boiler is usually an indication that scale should be removed. For long life, copper or brass is recommended ...
57 57 57 57 57 troubleshooting cer-temp 80 recovery system checkout procedure use this checkout for cer-temp 80 recovery systems. (for hot water supply application only) system operation checkout sequence contact incorrect cause remedy set tank temperature circulating pump pump and burner tank tempe...
58 58 58 58 58 checking honeywell s-8600h or s-8610m intermittent ignition controls turn off gas supply. Is voltage (24 vac) across the 24 v terminals on module during “call for heat”? Turn off power supply. Is ignition cable firmly plugged into pilot assembly and module? Is ground wire firmly attac...
59 59 59 59 59 checking honeywell s8600h or s-8610m intermittent ignition controls spark at pilot burner but pilot will not light ensure all manual shutoff valves are fully open; all filters are clean; all gas connections are gas tight; pilot tubing is not damaged, obstructed or kinked; and pilot or...
60 60 60 60 60 checking honeywell s-8600h or s8610m intermittent ignition controls pilot burner lights but main burner does not light does the pilot flame cover 3/8” to 1/2” of ingniter/sensor rod? Does spark stay on for more than 15 seconds after the pilot is “proven” (lit)? Ensure the ground wire ...
61 61 61 61 61 checking honeywell s8600h or s-8610m intermittent ignition controls no spark at pilot burner but pilot will not light turn off gas supply. Is there a good connection between terminals? Is module securely attached to appliance for good ground connection? Is voltage (24vac across transf...
62 62 62 62 62 limited warranty a. O. Smith corporation, the warrantor, extends the following limited warranty to the owner of this hydronic 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 ...
63 63 63 63 63.
64 64 64 64 64 5621 w. 115th street, alsip, il 60803 phone: 1-800-433-2545 fax: 1-800-433-2515 e-mail: parts@hotwater.Com • www.Hotwater.Com replacement parts.