Lochinvar 000 through 2 General Category IV Vent Termination Clearances, Drain Tee Installation

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Any vent materials specified must be listed by a nationally recognized test agency for use as a Category IV vent material.

The venting system must be planned so as to avoid possible contact with concealed plumbing or electrical wiring inside walls, floors or ceilings. Locate the appliance as close as possible to a chimney or gas vent.

There shall be no reductions in vent diameter.

Horizontal portions of the venting system shall be supported to prevent sagging. Horizontal runs should slope upwards not less than 1/4 inch per foot (21 mm/m) from the drain tee installed in the flue to the vertical portion of the flue or to the vent terminal on sidewall venting installations. This ensures proper removal of any condensate that may form in the flue. Follow the installation instructions from the vent material manufacturer.

Do not use an existing chimney as a raceway if another appliance or fireplace is vented through the chimney. The weight of the venting system must not rest on the unit. Adequate support of the venting system must be provided in compliance with local codes and other applicable codes. All connections should be secured and sealed per the vent manufacturers specifications.

Vent connectors serving appliances vented by natural draft shall not be connected to any portion of the Category IV positive pressure vent system used by this appliance. Connection of a negative draft flue into the positive pressure stack from this appliance may cause flue products to be discharged into an occupied living space causing serious health injury.

When a Category IV vent system is disconnected for any reason, the flue must be reassembled and resealed according to the vent manufacturer’s instructions.

The installed length of the Category IV flue from the appliance to the point of termination, outside of the building, must not

exceed a maximum of 100 equivalent feet (30.5 m) in length.

Subtract 5 feet (1.5 m) of equivalent length for each 90° elbow installed in the vent. Subtract 2 1/2 feet (0.7 m) of equivalent length for each 45° elbow installed in the vent.

The flue may terminate either vertically at the roof top or horizontally on a sidewall. See the information about the specific vent termination location for recommended location and clearances.

General Category IV Vent Termination Clearances

The vent cap should have a minimum clearance of 4 feet (1.2 m) horizontally from and in no case above or below, unless a 4 foot (1.2 m) horizontal distance is maintained from electric meters, gas meters, regulators and relief equipment.

The venting system shall terminate at least 3 feet (0.9 m) above any forced air inlet within 10 feet (3.05 m).

The venting system shall terminate at least 4 feet (1.2 m) below, 4 feet (1.2 m) horizontally from, or 1 foot (30 cm) above any door, window or gravity air inlet into any building.

Do not terminate the vent in a window well, stairwell, alcove, courtyard or other recessed area. The vent cannot terminate below grade. The bottom of the vent terminal shall be located at least 12 inches (30 cm) above grade and above normal snow levels.

To avoid a blocked flue condition, keep the vent cap clear of snow, ice, leaves, debris, etc.

Flue gases from this appliance may contain large amounts of water vapor that will form a white plume in winter. Plume could obstruct a window view.

Flue gas condensate can freeze on exterior surfaces or on the vent cap. Frozen condensate on the vent cap can result in a blocked flue condition. Flue gas condensate can cause discoloration of exterior building surfaces. Adjacent brick or masonry surfaces should be protected with a rust resistant sheet metal plate.

The manufacturer shall NOT be held liable for any personal injury or property damage due to ice formation or the dislodging of ice from the vent system or the vent termination.

Drain Tee Installation

WIRE TIE

4" Ø

CIRCULAR TRAP

TO SUITABLE DRAIN

FIG. 12 Drain Tee

A drain tee MUST be installed in the Category IV vent pipe to collect and dispose of any condensate that may occur in the vent system. The drain tee should be installed at the point where the flue turns vertical for a roof top termination or as one of the first fittings in a horizontal flue that will terminate on a sidewall. Ensure that horizontal portions of the vent are properly sloped to allow condensate to be evacuated at the drain tee. See the typical vent installation drawings. Plastic drain tubing, sized per the vent manufacturer’s instructions, shall be provided as a drain line from

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Contents
Special Instructions To Owner WarrantyIFB/IFW-i&s-05 Table of Contents What to do if YOU Smell GAS Checking EquipmentDo not Owner WarningTable a Installation Procedure Location of UnitRecommended Service Clearances Clearances from Combustible ConstructionCombustion Air Direct from Outside AIR Supply to Mechanical Room Table BMinimum Recommended Combustion 500 in2 3226 cm2 667 in2 4303 cm2 000 in2 12,903 cm2Construction AIR Filter Construction Air FilterTable D Construction AIR Filter Kits Table CVenting Category IV Flue Pipe SizesCategory IV Flue Pipe Materials Category IV Positive Pressure Venting SystemCategory IV Venting Venting Guidelines for a Category IV VentGeneral Category IV Vent Termination Clearances Drain Tee InstallationExceed a maximum of 100 equivalent feet 30.5 m in length Masonry Chimney Installations Vertical Venting TerminationsSidewall Vent Cap Kits Sidewall Venting TerminationsTable E Sidewall VentLocation of a Sidewall Vent Termination Direct Vent INTELLI-VENT SystemsAir Inlet Table FDirect Vent and Intelli-Vent Flue Air Inlet Pipe Sizes Length of Air Inlet PipeVertical Direct Vent Systems Combined Combustion Air Inlet PointsMultiple Vertical Direct Vent Installations Horizontal Direct VentTable G Sidewall Combustion AIR InletLocation of a Sidewall Air Inlet Cap Multiple Horizontal Direct Vent Installations These areMaximum Length of an Intelli-Vent System Table HCombined Air Inlet Points Air Inlet Sidewall Input Flue Pipe Btu/hr SizeBtu/hr Size Cap Kit Horizontal INTELLI-VENT with Vertical Combustion AIRAir Inlet Sidewall Input Flue Pipe 500,000 SVK3026Vertical Combustion Horizontal INTELLI-VENT AIR Inlet Location of a Rooftop Air Inlet CapTable J GAS Connection GAS Supply GAS Pressure TestTable K Table LTable M Recommended Gas Pipe Size Single Appliance InstallationsMultiple Appliance Installations Gas Pipe Size Chart Table NGAS Piping GAS Manifold Pressure AdjustmentInstall Piping to Control Checking GAS Supply PressureChecking Manifold GAS Pressure Water Connections Water ConnectionsInlet and Outlet Connections Secondary Heat Exchanger Primary Heat ExchangerMinimum Pipe Size Requirements Integral Bypass Bypass Valve SynchronizationOptional Intermittent Pump Operation Bypass Piping AssemblyIntegral Circulator Bypass Initial Set-up of Maximum Water FlowTable P Minimum Water TemperaturesBtu/hr Input Temperature Rise Bypass OperationLOW Water Cutoff Water Flow SwitchTable Q GAS Train and ControlsRelief Valve Diaphragm GAS Valve Ratio GAS ValveJacket Assembly Electrical ConnectionsAccess to Components and Controls Front Control Panel LocationsVariable Frequency Drive Transformer and Relay LocationsLOW AIR Pressure Switch High GAS Pressure Switch LOW GAS Pressure Switch OptionalExcel Be used as a diagnostic indicator Table S Temperature AdjustmentDefault Values Pre-programmed in the Excel To Activate the Manual OverrideTable T Display Default Values Password FunctionConfiguring Command Display Accessing the SIX Changeable Points from Command DisplaySet Point Temp Calculated Set PointTotal Run Time Sequencing TypeCommand Display Data Screen Status Point Operational Modes Status PointsTable U Hot Surface Igniter OnOutdoor Reset Function Selections Optional on Heating Boilers OnlyMultiple Appliance Installations Efficiency Optimized with Time EqualizationInterfacing Multiple Appliances Singly Terminated FTT Network Bus Topology SpecificationsTable W Wire Termination for E-Bus Connection Additional Components Used to Interface Multiple AppliancesHigh Water Temperature Limit Control Typical Building Management System DiagramHOT Surface Ignition System Service PartsIgnition Module Lockout Functions Ignition and Control Timings Diagnostic Status IndicationTable Y Table ZBurner OPERATION/DIAGNOSTIC LIGHTS, Resets and SwitchesIndicator Table AACombustion AIR Blower Combustion Air Blower and Transition ChamberTable BB Condensate ManagementSystem Optional Condensate Drain Location On RearCondensate Trap Installation Condensate TestingReplenishing the Neutralizer Install Condensate Trap Lighting InstructionsTo Turn OFF GAS to Appliance Ignition System CheckoutSequence of Operation Heat Transfer ProcessMaintenance End of SequenceBurner Removal and Cleaning Burner MaintenanceBurner Cleaning Procedure Location of Primary Heat ExchangerSecondary Heat Exchanger Inspection Lubrication Freeze Protection Water Treatment Heating Boiler InstallationsFreeze Protection for a Heating Boiler System If Required Water Connections Heating Boilers onlyBoiler Circulator Pump Limitations Primary Loop Circulator Pump SpecificationsPiping Lengths Circulator Pump OperationMinimum Boiler Water Temperatures PRIMARY/SECONDARY Boiler PipingMaximum Flow for Heating Boiler Boiler Temperature Rise Chart Table DDTable CC Btu/hr Input Maximum FlowTypical Heating Boiler Installations TEMPERATURE/PRESSURE GaugePlacing the Boiler Operation Boiler Operating Temperature Control Installation with a Chilled Water SystemBoiler Operation Water Velocity Control Typical Water Heater Piping with Storage TankTable FF Table EEMaximum Flow Rate Btu/hr Input Water Chemistry Piping Multiple Unit Installations Single Water Heater Piping with Two Storage TanksHeat Exchanger Table GGPump Operation Common ManifoldThermostat Settings Table HHThermal Expansion Optional Relief ValveCathodic Protection Ladder Diagram PWM Wiring Diagram
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