Hubbell Electric Heater Company CR User Manual

OPERATING AND MAINTENANCE MANUAL FOR INSTANTANEOUS ELECTRIC CIRCULATION HEATER ELECTRIC HEATER COMPANY B

10 On / Off Control Switch A built-in non-fused On/Off disconnect switch may be supplied with the control panel to decrease the risk of injury when

11Silicon Control Rectifier An SCR “zero fired” power controller for 0-100% proportional control of heaters may be supplied. Dial Temperature and

12 SECTION II – INSTALLATION WARNING / CAUTION DO NOT TURN ON THE ELECTRIC POWER SUPPLY to this equipment until heater is completely filled with w

13Outlet to floor drain Install into provided tapping Manual Release Lever

14 SECTION III - SCHEDULED MAINTENANCE AND OPERATION WARNING / CAUTION Before performing any maintenance procedure, make certain power supply is

15 SECTION IV – TROUBLESHOOTING Symptom Probable Cause Corrective Action / Remedy Circuit breaker tripped at source. Reset circuit breaker. On/O

16 Faulty thermostat. Check thermostat adjustment. Monitor thermostat as described in Section III, Quarterly Inspection. Replace if necessary. Blow

17SECTION V - SERVICING & REPLACEMENT OF PARTS WARNING / CAUTION Before servicing or replacing any part make sure to turn the power supply

18 IMMERSION TEMPERATURE HIGH LIMIT CUT-OFF 1. Disconnect power from unit. 2. Remove access cover. 3. Remove high limit cover screw and cover.

19IMMERSION THERMOSTAT 1. Disconnect power from unit. 2. Remove access cover and locate thermostat. 3. Remove high limit cover screw and cover.

2 HUBBELL ELECTRIC HEATER COMPANY P.O. BOX 288 STRATFORD, CT 06615 PHONE: (203) 378-2659 FAX: (203) 378-3593 INTERNET: http://www.hubbe

20 HEATING ELEMENT 1. Disconnect power from unit. 2. Shut off incoming water supply. 3. Attach hose to drain connection. 4. Lift manual release

21RELIEF VALVE 1. Disconnect power from unit. 2. Shut off incoming water supply. 3. Lift test lever on relief valve to relieve pressure in tank.

22 SECTION VI – MISCELLANEOUS CHARTS AND FORMULAS NEMA ENCLOSURES

23ELECTRICAL DATA

24 FORMULAS

25TORQUE VALUES BOLT SIZE 18-8 S/S IN.-LBS. BRASS IN.-LBS. SILICONBRONZE IN.-LBS. ALUMINUM2024-T4 IN.-LBS. 316 S/S IN.-LBS. MONEL IN.-LBS. 4-40 5.

3 TABLE OF CONTENTS SECTION TITLE PAGE #

4

5SECTION I - GENERAL DESCRIPTION AND CONSTRUCTION GENERAL DESCRIPTION This book describes a packaged electric heater that is a stationary, self-co

6 OUTER SHELL, INSULATION, AND SUPPORTS The pressure vessel is encapsulated in 2-inches of high-density fiberglass insulation. The protective shell

7CONTROL THERMOSTAT The control panel is supplied standard with a single-stage immersion thermostatic switch. As an optional any of the following m

8 TEMPERATURE HIGH LIMIT SWITCH As a safety device, an immersion high temperature cut-off switch with manual reset, adjustable through a range of 1

9INDIVIDUALLY FUSED ELEMENTS To prevent the possibility of damage to control circuits and other elements in case of electrical overloads, fuses may