Bradford-White Corp TGHE-160I-N(X), TGHE-1991-N(X) instruction manual

Page 14

potable water. Unions should be installed on both the hot and cold water lines for future servicing and disconnection of the water heater. Install a shut-off valve in the cold water supply line.

2.In order to service the water heater in the event the heat exchanger needs to be flushed of mineral deposits, tee fittings with shut-off valves and service connections to hoses should be installed. Also, install a shut-off valve to the hot water supply to isolate the service tee fittings. A plumbing installation kit, which includes these fittings and a pressure relief valve, is available from your supplier. Refer to the piping diagrams in Section IV, “Water Connections.”

3.Install a pressure relief valve on a tee connection from the hot water outlet piping from the water heater. Refer to the piping diagrams (Figure 4 and Figure 5) and pressure relief valve warning in Section IV, “Water Connections.”

4.In cold climates, where piping can freeze during an extended power failure, drain solenoid valves should be installed on the cold and hot water supply lines to allow water to drain from the water heater when power is interrupted. Refer to the piping diagram (Figure 6) “Recommended Piping for Power Failure Freeze Protection” in Section IV, and contact your Bradford White dealer if assistance is needed.

5.If this water heater is installed in a closed water supply system, such as the one having a back- flow preventer in the cold water supply, provisions must be made to control thermal expansion. DO NOT operate this water heater in a closed system without provisions for controlling thermal expansion. Warranties do not cover damages from thermal expansions, such as pressure bulges and/or deformities. Your water supplier or local plumbing inspector should be contacted on how to control this situation.

6.Purge the cold water line prior to connecting to the water heater to remove debris. Debris will clog the mesh strainer on the inlet filter. The inlet strainer prevents debris from damaging the flow sensor or clogging the coil. It may need to be cleaned periodically and should be cleaned after the initial operation. DO NOT operate the water heater without the filter in place. In areas where sediment may be periodically present in the water supply, a Y-type strainer (#20 mesh) or cartridge filter should be installed on the cold water inlet to the water heater to prevent the water heater fine mesh strainer from getting plugged and restricting water flow.

7.After installation of the water lines, open the main water supply valve and fill the water heater. While the water heater is filling, open several hot water faucets to allow air to escape from the water system. When a steady stream of water flows through the faucets, close them and check all water connections for possible leaks.

8.This water heater may also be connected to a circulating pump or storage tank for increased flow capacity during high demand periods.

9.Commercial installations may require more than one water heater piped together in a manifold to supply enough capacity for high temperature and high water flow applications. Special controls are available from your Bradford White supplier for operating more than one water heater together. These controls stage the operation of the water heaters for the flow rates and control the amount of flow through each water heater. Order p/n MSA-2M for the electronic manifold control for the first and second water heater and p/n MSA-2S for the wiring harness for each additional water heater to be controlled. A maximum of (5) water heaters can be connected together. Alternatively, to connect only (2) water heaters, an EZConnectTM harness, p/n REU-EZC-1US, can be used. Instructions are included with these parts.

NOTICE

Take care when using pipe dope or thread sealing tape to avoid clogging the inlet screen and water flow sensor. Wipe off excess pipe dope from threads before connecting to the water heater.

Commercial dishwashers will require either more than one water heater, or a storage tank to supply a sufficient volume of hot water.

14

Image 14
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 Remove Carton UnpackingWater Heater Location Mount Water Heater on the Wall State Regulations Important In the State of Massachusetts 248CMR 4.00Instructions for Connections Section IV Water ConnectionsWater Quality 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 FusesSequence of Operation Section Viii Operating InstructionsGeneral Instructions To Fill the Water Heater 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