State Water Heaters SW 37-670 - Manuals

Page 2 - safe InstallatIon, use and serVIce; danGer; message, and how to avoid the risk of injury.; Qualified Installer or Service Agency:

2 safe InstallatIon, use and serVIce Your safety and the safety of others is extremely important in the installation, use, and servicing of this boiler. Many safety-related messages and instructions have been provided in this manual and on your own boiler to warn you and others of a potential injury...

Page 3 - General safety InforMatIon; precautIons; GroundInG InstructIons

3 General safety InforMatIon when servicing this unit, verify the power to the unit is turned off prior to opening the control cabinet door. precautIons DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN UNDER WATER. Immediately call a qualified service technician to inspect the appliance and to replace...

Page 4 - preparInG for the InstallatIon

4 taBle of contents SAFE INSTALLATION, USE AND SERVICE...........................................................2GENERAL SAFETY INFORMATION .......................................................................3 Precautions .............................................................................

Page 5 - dIMensIon data

5 dIMensIon data sIZes and data nw37 thru nw150 Model Number D E F G** H J K S T Inlet* & Outlet* Boiler Drain Prefix Gal. Cap. Std. KW Input SW SW SW SW SW SW SW SW 37 37 37 37 37 37 37 37 45K 60K 75K 90K 105K 120K 150K 180K 32 32 32 32 32 32 32 32 30 30 30 30 30 30 30 30 12 12 12 12 12 12 12 1...

Page 8 - features and coMponents; actual confIGuratIon May Vary.

8 features and coMponents actual confIGuratIon May Vary.

Page 9 - facts to consIder aBout the locatIon; asMe

9 locatInG the BoIler approVals Model and ratInG facts to consIder aBout the locatIon Carefully choose a location for the boiler. The placement is a very important consideration for the safety of the occupants in the building and for the most economical use of the appliance. Whether replacing an old...

Page 10 - not; pressure relIef ValVe; InstallatIon

10 requIred aBIlIty Installation and service of this boiler requires ability equivalent to that of a qualified agency (page 2) in the field involved. Plumbing and electrical work is required. General The installation must conform with these instructions and the local code authority having jurisdicti...

Page 12 - electrIcal data

12 electrIcal data General Check the boiler model and rating plate information against the characteristics of the branch circuit electrical supply. Do not connect the boiler to an improper source of electricity. Voltage applied to the boiler should not vary more than + 5% to -10% of the model and ra...

Page 13 - three phase delta wIth therMostat

13 wIrInG dIaGraMs wIrInG dIaGraMs dIaGraM 1. three phase delta wIth therMostat dIaGraM 2. three phase wye wIth therMostat NOTE(S): 1. IF A MANUAL RESET HLMT IS USED, THE SECOND AUTO RESET HLMT SWITCH IS NOT USED. STD. WIRING OPTIONAL OR FIELD WIRING AS REQ’D NOTE(S): 1. IF A MANUAL RESET HLMT IS US...

Page 15 - General; lwco; hIGh teMperature lIMIts; automatic high limit; fIllInG the BoIler

15 operatIon IMportant IT IS RECOMMENDED THAT A QUALIFIED SERVICE TECHNICIAN PERFORM THE INITIAL FIRING OF THE BOILER. AT THIS TIME THE USER SHOULD NOT HESITATE TO ASK THE TECHNICIAN ANY QUESTIONS WHICH THEY MAY HAVE IN REGARD TO THE OPERATION AND MAINTENANCE OF THE BOILER. BEFORE FILLING THE SYSTEM...

Page 16 - teMperature controls; draInInG

16 teMperature controls The boilers covered in this instruction manual are equipped with (adjustable) thermostat or step control to regulate water temperature and other controls to provide safety features. See the wiring diagrams on page 13 & 14 and/or literature included with this manual for ad...

Page 17 - MaIntenance; MaIntenance schedule; pressure relIef ValVe test; Failure to clean the system may cause:; flushInG

17 MaIntenance Boiler maintenance includes periodic tank flushing and cleaning, and removal of lime scale from the heating elements. Circulating pumps should be oiled. MaIntenance schedule Component Operation Interval Required Tank Flushing Monthly Sediment Removal As Needed Elements Lime Scale Remo...

Page 18 - trouBleshootInG checklIst; systeM water test

18 Lime scale should be removed from the elements by dissolving the accumulation in UN•LIME® delimer. UN•LIME is a non-muriatic delimer, available through your dealer or distributor. Do not use muratic or hydrochloric acid base deliming solutions to remove lime scale from the elements. Do not pour d...

Page 19 - sw-37 thru sw-670 electrIc hot water BoIler lIMIted warranty

19 sw-37 thru sw-670 electrIc hot water BoIler lIMIted warranty State Water Heaters, the warrantor, extends the following LIMITED WARRANTY to the owner of this boiler. 1. THE TANK If the tank in this boiler shall prove upon examination by the warrantor to have leaked due to natural corrosion from wa...