Thomas & Betts LDAP 1200 warranty Venting Requirements, Type of Vent Pipe, Vertical

Page 26

24. Venting

Model LDAP heaters are certified as Category III heaters.

WARNING: Each heater requires its own individual vent pipe run and vent cap. Manifolding of vent runs can cause recirculation of combustion products into the building. Failure to comply could result in severe personal injury or death and/or property damage.

Venting must be in accordance with local codes and the National Fuel Gas Code Z223.1 or CSA B149.1 and B149.2, Installation Code for Gas Burning Appliances and Equipment. Local requirements supersede national requirements.

These power-vented heaters are designed to operate safely and efficiently with either a horizontal or vertical vent. Comply with the specific requirements and instructions.

If this heater is replacing an existing heater, be sure that the vent is sized properly for the heater being installed and that the existing vent is in good condition. A properly sized vent system is required for safe operation of the heater. An improperly sized vent system can cause unsafe conditions and/or create condensation. Do not vent into an existing gravity vent or chimney.

Installation should be done by a qualified agency in accordance with these instruc- tions. The qualified service agency installing this system is responsible for the instal- lation.

Venting Requirements

1) Type of Vent Pipe

The type of vent pipe is determined by whether the vent is horizontal or vertical.

Horizontal • Vent pipe approved for a Category III appliance, OR

2)Vent Pipe Diameter and Length

• Appropriately sealed 26-gauge or heavier galvanized

 

 

steel or equivalent single-wall pipe

Vertical

•

Vent pipe approved for a Category III appliance, OR

 

•

Appropriately sealed 26-gauge or heavier galvanized

 

 

steel or equivalent single-wall pipe

OR, if at least 75% of the equivalent length of the vent run is vertical

• Double-wall (Type B) vent pipe

Vent pipe diameters and maximum vent lengths in the table apply to both Horizontal and Vertical vents. Add all straight sections and equivalent lengths for elbows. The total combined length must not exceed the Maximum Vent Length.

•Use only one diameter of vent pipe on an installation.

•Minimum vent length is 3 feet (1M).

•Minimum of 1 ft (0.3M) of vertical vent required on venter outlet before installing an elbow.

Model

Venter

Vent Pipe

Maximum

Eqivalent

Equivalent

Field-Supplied Taper Type

Outlet

Vent Length

Straight Length

Straight Length

LDAP

Diameter

Connection Required at the Venter

Diameter

 

1

for 90° Elbow

for 45° Elbow

Size

 

 

 

 

Outlet

inches

mm

inches

mm

feet

M

feet

M

feet

M

 

 

400

6

152

6

152

45

13.7

15

4.6

7.5

2.3

None

7

178

60

18.3

8

2.4

4

1.2

6" to 7" (152 to 178mm) Increaser

 

 

 

800

8

203

8

203

50

15.2

15

4.6

7.5

2.3

None

10

254

45

13.7

5

1.5

2.5

0.8

8" to 10" (203 to 254mm) Increaser

 

 

 

1200

8

203

8

203

50

15.2

15

4.6

7.5

2.3

None

10

254

45

13.7

5

1.5

2.5

0.8

8" to 10" (203 to 254mm) Increaser

 

 

 

1 Includes one 90° elbow at venter outlet.

Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 26

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Contents Table of Contents Reznor Model LdapHazard Levels of Warnings in this Manual General Installation CodesWarranty Switches Uncrating and Preparation High Altitude OperationModel One Technical DataDimensions DownflowModel LDAP800 and Model LDAP1200 Clearances inches/mm ClearancesCombustion Air Throw feet and meters Heater LocationMounting Height Heater Throw All Models Sound Data Hanging or Mounting the Heater and Installing LouversHeater Location cont’d Location RecommendationsWall Mounting Guidelines for Wall Mounting Model Ldap HeatersGas Piping and Pressures Installing Heater and Louvers cont’dInstalling Louvers Sizing Gas SupplyHorizontal Supply Valve Outlet or Orifice Pressure SettingGas Connection Size Vertical SupplyCont’d GasPressures Supply Wiring Burners Electrical Supply ConnectionsThermostat and Connections Disconnect SwitchElectrical Supply and Connections cont’d CL7 Connections for Model Ldap 1200 with Option Thermostat and Connections cont’dMultiple Heater Control Option CL31 and Option CL32 CL1, CL2, CL3, CL7, or CL18Limit Control Combustion Air Proving Pressure SwitchesPressure Switch Settings High Limit ControlIgnition System Normal Heat Cycle Operating Sequence Abnormal Heat Cycle FunctionsIgnition System cont’d Gas Valves Fault Modes LockoutFan Motor Wiring Fan MotorsWiring Diagrams Wiring DiagramWhite = Neutral Black = High Heat Speed Wiring Diagrams cont’d Above control wiring isAbove control wiring is Line VoltageType of Vent Pipe VentingVenting Requirements VerticalJoints and Sealing Joints and Sealing cont’d Venting cont’dVenting Requirements cont’d Double Vent Wall Pipe With Sealant Pipe RunWall Ft 1M Minimum 305 mm Operating Instructions Operating Sequence Check Installation and StartupCheck the installation prior to startup Heater Startup Check installation after startup Vent System Testing ProcedureWay Discharge Louvers, Option CD32 Nozzles Maintenance ScheduleDimensions NozzleHeat Exchanger Maintenance Burner Maintenance Location of ControlsRe-Install the Burner Burner Maintenance cont’dInspect and Clean the Burner Instructions to Re-Install the Burner Refer to FigureIgnitor Flame Sensor Burner OrificesHeat Section Venter Motor and Wheel MeasurementFan Blades Heat Section Venter Motor and Wheel cont’dMain Venter Motor and Wheel Models 800 and 1200 only GuardsCombustion Air Pressure Switches Operating Gas ValvesTroubleshooting Vent SystemGeneral Troubleshooting Problem Probablecause RemedyGeneral Troubleshooting cont’d No heat Heater

LDAP 1200 specifications

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