Bradford-White Corp TGHE-160I-N(X), TGHE-1991-N(X) Recommended Piping for Freeze Protection

Page 18

Recommended Piping for Power Failure Freeze Protection

As long as electrical power and gas are supplied to the EverHot® water heater, freeze protection is provided to the heat exchanger and piping inside the water heater with ambient temperatures as cold as -22°F (-30°C), when protected from direct wind exposure. In the event of a power failure with ambient temperatures below freezing, the water heater must be drained of all water to prevent freeze damage. The water heater may be drained manually, or automatically, through the installation of the optional solenoid valves, as shown in the following illustration. The drain solenoids are recommended for very cold climates to prevent water heater freeze damage where power failures from ice and windstorms occur.

The electrical connections for the two solenoids must be tied to the 120 volt main power supply (black and white wires). When the electrical power to the water heater fails, the ¾” solenoid on the cold water inlet pipe closes, stopping water flow into the water heater. The drain solenoid opens, allowing the water heater and connected piping to drain. Make sure the piping from the drain solenoid is run to a suitable drain or outside the building to prevent water damage.

Figure 6. Recommended Piping for Freeze Protection.

CAUTION

Heat trace all water pipe and fittings located outside the home (attic, crawl space) or building structure. All pipe and fittings shown below dashed line (see Figure 6) should be located inside home or building structure. The vacuum breaker line should be located inside the building structure.

18

Image 18
Contents TGHE-160I-NX & TGHE-199I-NX Table of Contents Page Page If YOU Smell GAS Section II Specifications ModelDimensions Pressure Drop psi Water Flow Rate gpm Section III Installation Instructions Unpacking Water Heater LocationRemove Carton Mount Water Heater on the Wall State Regulations Important In the State of Massachusetts 248CMR 4.00Section IV Water Connections Water QualityInstructions for Connections Page Approximate TIME/TEMPERATURE Relationships in Scalds Recommended Piping for a Basic Installation Recommended Piping for a Circulation Systems Recommended Piping for Power Failure Freeze Protection Recommended Piping for Freeze ProtectionPressure Relief Valve Page Page Section V Venting Venting Vent / Air Intake Terminal Locations Direct Vent Terminal LocationVenting System Installation Venting System LayoutPrior to the Installation of the EverHot Direct Vent System Horizontal Direct Vent InstallationsIllustration Showing a Horizontal Termination Installation Vertical Direct Vent Installations Vertical Vent InstallationsCombustion Blower Dip Switch Settings Dip SwitchInstallation of Venting System Components Condensate Recommended Vent/Air Intake Terminal PositionJoint Connection Coping with CondensationIllustration Showing How to Shorten Vent Extensions Shortening of Vent ExtensionsVenting Parts & Dimensions Components Needed for Direct Vent ApplicationsVent Pipe Clamp, p/n Page Measure Dimension to Fit Illustration Showing How to Properly Cut a Vent ExtensionFinal Installation of the Vent System Illustration Showing How to Cut the Vertical Vent to Fit Cut the Vent to FitHigh Altitude Installations Mounting the Vent System Vertical DischargePage Venting Suppliers Manufacturer ProductSection VI GAS Connections Gas GAS Meter Size Natural GAS onlyGAS Pressure Regulation Specific CorrectionInitial Operation and Testing Installer only Section VII Electrical Connections Ladder Diagram Wiring Diagram for Tghe Models Temperature Controls Page Securing screw Wiring hole 21/32 Installation of Remote Controls OptionalIllustration Showing Where to Connect Remote Control Harness Resistance Connector Pin Nos Initial Operation and Testing of Controls Installer onlyTroubleshooting Electrical Wire ColorHeat Exchanger and Outgoing Water Temperature Thermistors Flame RodFrost Protection Amp FusesSection Viii Operating Instructions General Instructions To Fill the Water HeaterSequence of Operation What to do if YOU Smell GAS Lighting Instructions For Your Safety Read Before OperatingProperty damage, personal injury or loss of life Operation InstructionsTemperature Adjustment Turning OFF the Water Heater for AN Extended Period of TimePage Approximate TIME/TEMPERATURE Relationships in Scalds ScaldingFirst AID for Scalds Code Code DescriptionCode Code Description Thermal Fuse Code Code Description Nothing happens Section IX Maintenance Burner Flame AppearancePage Circulating Pump Water HeaterPage Section X Parts List TGHE-160I TGHE-199I Description QuantityPage TGHE-160I TGHE-199I Page TGHE-160I TGHE-199I Page TGHE-160I TGHE-199I Section XI Warranty What should you do to keep the warranty in effect? What will we do to correct problems?How do you get warranty assistance? What will we not do?Page Page Fax/215-641-1670 Parts Fax/215-641-2180