Sentry S-120 Installation And Operating Instructions Manual

Manual is about: Hot water models S-34 through S-150 Gas-Fired Cast-Iron Boilers For Natural And L.P. Propane gases

Summary of S-120

  • Page 1

    Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,3 installation requirements boiler location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

  • Page 2

    Note: height dimension increases by 1-3/4" when comustible floor kit is used. * vent damper may be installed horizontally on all models with use of a vent elbow. For more information, see figure 2, page 5. . Orifice orifice sizes for high altitudes size reduce output 10% for elevation gas sea 610-12...

  • Page 3

    B. For installation on non-combustible floors only. The combustible floor kit part number printed on the boiler rating plate is the only one to be used when installing on combustible floors. The boiler must not be installed on carpeting. C. If boiler is to be located over buried conduit containing e...

  • Page 4

    Safety keep the boiler area clear and free from combustible materials, gasoline and other flammable vapors and liquids. Vent piping a. Vent piping installation must be in accordance with the require- ments of the local gas utility, local building codes and other authorities having jurisdiction. B. B...

  • Page 5

    Sentry 5 . 5. This device must be installed after the appliance draft hood (between the draft hood outlet and the connector to the out- door chimney or vent) as close to the draft hood as practica- ble, and without modification of the draft hood or the damper. (see figures 1 and 2.) 6. The inlet siz...

  • Page 6

    D. Thermostat heat anticipator adjustments if the 24v room thermostat that controls the boiler has an adjustment heat anticipator, it must be set to the amp draw of the boiler. Connect the system to the thermostat and run the system. Measure the current draw through the thermostat wires and set anti...

  • Page 7

    Z t tv lo temp hi temp economy 24v thermostat hydrolevel hydrostat control model 3200 hot neutral 120v circulator honeywell ignition module gas valve l1 l2 c2 c1 b1 b2 i1 i2 24v(gnd) mv mv/pv pv gnd (burner) 24v gnd mv pv mv pv roll out and blocked vent safety switches pilot gas pipe ignitor cable e...

  • Page 8

    Note: settings can be checked using the test/settings button. Setting the high limit the high limit is factory set at 88°c (190°f). To adjust, turn the hi temp dial until the desired setting is displayed. (setting range: 38°c–104°c [100°–220°f]) setting the low limit the low limit is designed to mai...

  • Page 9

    U temp active indicates that the fuel smart hydrostat control is powered and that the temperature function is active. V temp high temp illuminates when the boiler water temperature reach- es the high limit setting. It will remain lit until the water temperature falls 5.5°c (10°f) (see high limit dif...

  • Page 10

    10 sentry figure 8. Multizoning of sentry boilers pump zoning system using r845a relay. Figure 9. Multizoning of sentry boiler-2 zone system pump zoning system using r882a/b relays..

  • Page 11

    Sentry 11 figure 10. Multizoning of sentry boilers zone valve system using r8043e/f zone valves. Important notice this boiler is equipped with a feature that saves energy by reducing the boiler water temperature as the heating load decreases. This feature is equipped with an override which is provid...

  • Page 12

    Sentry 12 sequence of operation for sentry boilers thermostat calls for heat high limit contacts closed? Low water cut off contacts closed? Vent damper relay energized. Vent damper motor opens vent damper. End switch closes. Ignition control energized the pilot flame established ? Spark generator of...

  • Page 13

    Boiler room air supply and ventilation an ample supply of air is required to obtain combustion and ventilation. All air comes from outside, directly through wall openings to the boiler or through unsealed openings around windows, doors, etc. In the whole building. When build- ings are insulated, cau...

  • Page 14

    Figure 12. Valve vr8204 or vr8304 3. Venting is installed according to instructions under “vent piping”. 4. All wiring is completed, following applicable wiring dia- grams. 5. Using soap solution, check for gas leaks in all gas piping from meter to boiler pilot and manifold. Do not use open flame. I...

  • Page 15

    Example #2: for 8.70 w/m 3 gas this becomes: input = m 3 metered in 3 minutes × 8.70 × 20 (for 1050 btu/cu.Ft. Gas, this becomes: input = cu. Ft. Metered in 3 minutes × 1050 × 20) 4. The higher heating value* of gas varies substantially for different localities. Consult with slant/fin’s technical se...

  • Page 16

    Note-to remove burners: 1. Disconnect pilot at pilot mount, or disconnect pilot gas line at gas valve, before removing burners next to pilot. 2. Remove burner mounting clip. 3. Lift burner and slide burner away from orifice. 4. Clean and replace burners* and pilot. Adjust burners as described on pag...

  • Page 17

    Sentry 17 general troubleshooting guide for servicepeople burners fail to operate cause 1. Safety pilot out, or flame too low. 2. Gas supply valve shut off. 3. Electric switch open. 4. Blown or defective line fuse. 5. Operating or limit control contacts open or dirty. 6. Defective gas valve or press...

  • Page 18

    If replacement parts are needed when parts are needed, refer to boiler model and serial num- ber shown on the boiler name/rating plate.Whenever possible refer to the original order by number and date. Control identification and replacement should not be attempt- ed by unskilled personnel. Only simpl...

  • Page 19

    Thermostatic bypass valves type tv are designed to allow boilers to reach their optimum operating temperature quickly and to prevent cool/cold return temperatures from affecting them. Operation/installation: the thermostat within the "tv" valve allows full flow through the bypass until the predeterm...

  • Page 20

    Slant/fin ltd/ltee, 6450 northam drive, mississauga, ontario l4v 1h9 • phone: (905) 677-8400 / fax: (905) 677-1829 / order desk fax: (905) 677-9015 www.Slantfin.Ca / e-mail: orderdesk@slantfin.Ca / info@slantfin.Ca.