. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Circuit Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model No. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. of Power Circuits . . . . . . . . . . . . . . . Amps. . . . . . . . . . . . . . . . . . . . Electrical Capacity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Control

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Circuit Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Control Circuit Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . National Board No. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Amps . . . . . . . . . . . . . . . Phase . . . . . . . . . . . Cy . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Circuit Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Control Circuit Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . National Board No. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Amps . . . . . . . . . . . . . . . Phase . . . . . . . . . . . Cy . . . . . . . . .

ELECTRICAL REQUIREMENTS: 1. APPLICATION (Describe in Detail): □ Chromalox Standards □ Other (Specify) 7.AGENCY APPROVALS: □ None □ UL Component Recognized 2. HEATED MEDIUM (Specify): □ Gas □ CSA Certified □ Liquid □ Solid □ Other (Specify) 3. MAXIMUM WORK TEMPERATURE: °F 8. OTHER SPECIAL FEATURES: 4. MAXIMUM SHEATH TEMPERATURE: °F □ Bending; Dish to 15 in. Spherical Radius 5. INSTALLATION ENVIRONMENT: □ Indoor □ All Heat Construction (If Tooling Available; Check Factory) □ Outdoor

______________________________________________ Power Circuit Voltage __________________________ Model No. ___________________________________________________ Control Circuit Voltage__________________________ National Board No. ____________________________________________ Amps ___________Phase __________Cy __________ IMPORTANT – This data file contains the National Board Registration Certificate approving your boiler. It must be kept near the boiler at all times. Model Electric Capacity BHP Ratin

6. If the fitting is used thru an opening* use the locknut and plastic washer to fasten it. * Opening for 1/2” NPT thread is 7/8”. OPERATION 1. Do not operate heater at voltages in excess of that stamped on the heater since excess voltage will shorten heater life. 2. Always maintain a minimum of 2” of solution above the heated portion of the element to prevent exposure of the effective heated length. If the heater is not properly submerged, it may overheat and shorten heater life. Do not operate

Lugs/ "-13 x / " Deep1122Dimensions (Inches) AB11" 7-7/8" 6" E1 E2 Dim. (In.) Model PCNA B Cast Iron Body / Oil .5 to 10 kW 29 29 19 19 NWHOSR-06-04P5-E1 NWHOSR-06-04P5-E1 100108 100116 41 303/4 NWHOSR-06-005P-E1 100124 29 29 19 19 NWHOSR-06-006P-E1 NWHOSR-06-006P-E1 100132 100140 41 303/4 NWHOSR-06-010P-E1 100159 Galvanized Body / Water .5 to 40 kW 29 29 19 19 NWHSRG-06-018P-E1 NWHSRG-06-018P-E1 100010 100028 41 303/4 NWHSRG-06-020P-E1 100036 29 29 19 19 NWHSRG-06-024P-E1 NWHSRG-06-024P-E1 1000

Failure to comply can result in personal injury or property damage. The NWH-JR is a compact water circulation heater ideally suited for use as an engine coolant water heater and for many other uses where on-the-spot hot water is required. The copper-sheathed tubular heating element is centered in a galvanized iron or brass pipe body. Its screw-plug type mounting provides easy removal when necessary. The assembly is surrounded by insulation and a sheet metal jacket. An integral 60-180°F range the

9 155-024796-009 300-057560-007 300-048481-006 NWH-31225 240 1 12 155-024796-011 300-057560-007 300-048481-006 NWH-31225 240 3. 12 155-024796-012 300-057560-007 300-048481-006 NWH-31225 480 1 12 155-024796-013 300-057560-007 300-048481-006 NWH-31225 480 3. 12 155-024796-014 300-057560-007 NWH-31525 240 1 15 155-024796-016 300-057560-007 300-048481-006 NWH-31525 240 3. 15 155-024796-017 300-057560-007 300-048481-006 NWH-31525 480 1 15 155-024796-018 300-057560-007 300-048481-006 NWH-31525 480 3.

9 47.5 32-15/16 22-1/2 16-1/2 NWH-31225 or 1 or 3. 12 46.2 42-15/16 32-1/2 26-1/2 NWH-31525 480 1 or 3. 15 45.9 55-7/16 45 39 NWH-31825 1 or 3. 18 45.6 55-7/16 45 39 GENERAL The NWH-3 series is a general-purpose water or water-based thermostat. Such thermostats function to control outlet tempera- solution circulation heater intended for use indoors. It is designed tures and to limit internal temperatures under abnormal flow con- for 150 psig at 550°F per ANSI standards. ditions. These controls d