Raypak 503-2003 manual Safety Inspection, Follow-Up, Leak Test Procedure Dual-Seat Gas Valve

Page 46

SECTION D: Start up

Safety Inspection

1.Check all thermostats and high limit settings.

2.During the following safety checks leave manome- ters hooked up, check and record.

3.If other gas-fired appliances in the room are on the same gas main, check all pressures on the MVB with all other equipment running.

4.Check thermostats for ON-OFF operation.

5.Check high limits for ON-OFF operation.

6.While in operation, check flow switch operation

7.Check the low gas pressure switch (if provided). (For proper adjustment, use the attached manome- ters, if available, to set pressure. The scales on the switch are approximate only.) Low gas pressure switch (if provided) must be set at 3.0 in. WC for natural gas and propane gas.

8.Make sure that the high gas pressure switch (op- tional) is set to 3.0 in. WC for both natural gas and propane gas.

Follow-Up

Safety checks must be recorded as performed.

Turn heater on. After main burner ignition:

1.Check manometer for proper readings.

2.Cycle heater several times and re-check readings.

3.Remove all manometers and replace caps and screws.

4.Check for gas leaks one more time.

Leak Test Procedure: Dual-Seat Gas Valve

Proper leak testing requires three pressure test points in the gas train.

Remove the access panel on the rear of the heater to access the gas valve for this test. Test point A is a

bleedle valve located upstream of the combination gas valve on the supply manifold.

Test point B is a bleedle valve located between the two automatic gas valve seats.

Test point C is a bleedle valve located downstream of both automatic gas valve seats and upstream of the manual valve. Refer to Fig. 40.

These tests are to be conducted with the electrical power to the heater turned OFF.

1.Manually close the downstream leak test valve.

2.Open the bleedle valve at test point A and connect a manometer to it. Verify that there is gas pressure and that it is within the proper range (NOTE: must not exceed 14.0 in. WC).

3.Open test point B and connect a rubber tube to it. Connect the other end of the tube to a manometer and look for a build-up of pressure. Increasing pressure indicates a leaking gas valve which must be replaced.

4.Next, close the upstream manual gas valve (field supplied) and remove the manometers from the bleedle valves in test point A and test point B. Connect a rubber tube from the test point A bleedle valve to the test point B bleedle valve and open the upstream manual gas valve. Make sure that test point A & B bleedle valves have been opened so as to allow gas to flow. This will bring gas pressure to the second valve seat.

5.Open the bleedle valve at test point C and connect a second rubber tube to it. Connect the other end of the tube to a manometer and look for a build-up of pressure. Increasing pressure indicates a leaking gas valve which must be replaced.

6.Remove rubber tube and manometers. Close each test point bleedle valve as the tubes are removed.

7.After no leakage has been verified at all valve seats and test valves, open downstream leak test valve and restore electrical power to the heater.

44

Page 45 Page 47
Image 46
Page 45 Page 47
Contents Installation Operating Instructions Page Table of Contents PAY Attention to These Terms Product Receipt Before InstallationSection a Model IdentificationGeneral Information Installations at ElevationComponent Locations Water Gas Vent Size Model Conn InputHot Water Supply General Safety Section BTime/Temperature Relationships in Scalds Water Temp Time to Produce Serious BurnSection C InstallationInstallation Codes Equipment BaseInstallations1 Canadian Installations2 Combustion and Ventilation Air Outdoor InstallationsHeater Min. Clearance Recommended From Combustible Service Indoor UnitsDirect Vent InstallationsOptional Construction Air Filter TruSeal Combustion AirWater Piping Canadian InstallationsGeneral Cold Water Operation Relief Valve Piping Hydrostatic TestCold Water Starts Model 20F∆T 30F∆T 40F∆T Min. Flow Max Flow Gpm ∆P ft Temperature & Pressure GaugeCold Water Run ∆P ft GpmHydronic Heating Domestic Hot WaterPotable Water and Space Heating Pool HeatingAutomatic Chlorinators and Chemical Feeders Winterizing Your HeaterWater Hardness Gas SupplyPool/Spa Water Chemistry PH of WaterGas Supply Pressure Gas Supply ConnectionModel NPT 4 NPT 2 NPT Check the Power Source Electrical Power ConnectionsField-Connected Controllers Field Wiring Connection Making the Electrical ConnectionsSupport of Vent Stack VentingAppliance Categories Inlet MaterialCanada Installations Vent Terminal LocationInstallation Venting Installation TipsVenting Configurations Vertical Venting CategoryTermination Vent Size Volume Model Pressure Flue Products In. WCCommon Venting Horizontal Through-the-Wall Direct Venting Category Typical Common VentingHorizontal Through-the-Wall Direct Venting Direct Vent Vertical Direct Vent VerticalControls Outdoor InstallationFreeze Protection Definitions Operating ModesOperation Modes Default Range Modulating Temperature Control User InterfaceHeater Sequence of Operation Model 503Model 1753 Section C Installation Ignition Module Flow Switch High Limit Manual ResetHigh Limit Auto Reset Optional Code ConditionAir Pressure Switch Modulating Temperature ControlHigh and Low Gas Pressure Switches Optional Low Water Cut-Off OptionalBlocked Vent Switch UDB Diagnostic BoardWiring Diagrams ModelsModels Section C Installation Start-up Section DPre Start-up Pre Start-up Check Blower AdjustmentStart-Up Initial Start-upManifold Adjustment Leak Test Procedure Dual-Seat Gas Valve Safety InspectionFollow-Up Leak Test Procedure Post Start-Up CheckSection D Start up Lighting Instructions Section EOperation To Turn Off Gas To ApplianceSection E Operation Troubleshooting Section FUDB Fault History Suggested Minimum Maintenance Schedule MaintenanceSection G Preventive Maintenance Schedule Appendix Section HInside Air Contamination Limited Parts Warranty MVB Types H and WH
Related manuals
Manual 56 pages 27.2 Kb

503-2003 specifications

The Raypak 503-2003 is a notable entry in the world of water heating solutions, renowned for its efficiency and reliability in both residential and commercial settings. This model is designed to provide exceptional performance while maintaining ease of use and minimization of environmental impact.

One of the standout features of the Raypak 503-2003 is its advanced heating technology. The unit utilizes a durable, copper heat exchanger which ensures quick and efficient heating of water. This heat exchanger is known for its ability to transfer heat effectively, leading to reduced energy consumption and lower utility bills. The design also allows for a seamless operation, ensuring that the system heats water swiftly without sacrificing performance.

In addition to its efficient heating capabilities, the Raypak 503-2003 is equipped with innovative controls. The digital control panel allows users to easily set and adjust the desired water temperature. This feature provides a level of convenience that simplifies operation while enhancing user experience. Furthermore, the smart technology employed in the unit ensures that it operates within optimal parameters, avoiding unnecessary energy expenditure.

Durability is another hallmark of the Raypak 503-2003. Built with heavy-duty components, this water heating solution is designed to withstand the rigors of continuous use. The rugged construction ensures longevity, making it a cost-effective investment for homeowners and businesses alike. Moreover, the unit is designed to be resistant to corrosion and wear, further extending its lifespan and reliability.

The energy efficiency of the Raypak 503-2003 is a crucial characteristic that sets it apart from competitors. Rated with a high efficiency score, this model contributes to lower emissions and is environmentally friendly. It adheres to various energy standards, making it a suitable choice for those looking to reduce their carbon footprint while enjoying reliable water heating.

Noise reduction is another important feature of the Raypak 503-2003. Designed with quiet operation in mind, the unit operates with minimal noise pollution, allowing for a pleasant environment in both residential and commercial spaces.

In summary, the Raypak 503-2003 combines advanced heating technology, user-friendly controls, durability, and energy efficiency into a robust water heating system. This makes it an excellent choice for those in need of dependable and sustainable heating solutions. Whether for daily home use or for larger commercial applications, the Raypak 503-2003 stands out as a leader in its class.
Top Page Image Contents