Raypak 503-2003 manual High Limit-Auto Reset Optional, Modulating Temperature Control, Flow Switch

Page 37

Fig. 38: High Limit (Manual Reset)

High Limit—Auto Reset (Optional)

This heater may be equipped with an optional adjust- able auto reset high limit temperature device.

The optional adjustable auto reset high limit is located inside the heater junction box. Adjust the setting to approx. 20°F (10°C) above desired outlet temperature.

Fig. 39: Adjustable High Limit (Auto Reset)

Modulating Temperature Control

This heater is equipped with a Raypak modulating temperature control. Refer to information starting on page 30 for information on the setting and use of this control.

Fig. 41: Modulating Temperature Control

Low Water Cut-Off (Optional)

The optional low water cut-off automatically shuts down the burner whenever water level drops below the level of the sensing probe. A 5-second time delay pre- vents premature lockout due to temporary conditions such as power fluctuations or air pockets.

Flow Switch

This standard, dual-purpose control, mounted and wired in series with the main gas valve, shuts off heater in case of pump failure or low water flow.

Fig. 42: Low Water Cut-Off

High & Low Gas Pressure Switches (Optional)

The optional low gas pressure switch connection mounts upstream of the gas valve (on the inlet flange to the gas valve) and is accessible through the remov- able access panels on the rear of the heater to reset the gas pressure switch, as necessary. It is used to ensure that sufficient gas pressure is present for prop- er valve/regulator performance. The low gas pressure switch automatically shuts down the heater if gas sup-

Fig. 40: Flow Switchply drops below the factory setting of 3.0 in. WC for 37 natural gas or propane gas.

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Contents Reference Catalog no .53G Effective Replaces 241288 Rev Do so may result in an explosion or firePage Contents Pay Attention to These Terms Installations at Elevation Before InstallationProduct Receipt Model IdentificationGeneral Information Component LocationsTime/Temperature Relationships in Scalds General SafetyWater Time to Produce Serious Temp Burn Installation Codes InstallationIndoor Installations Equipment BaseCombustion and Ventilation Air Outdoor InstallationsIndoor Units Table E Vent/Air Inlet Termination Clearances Conventional Combustion Air Supply InstallationsAir Filter Direct VentWater Piping Canadian InstallationsGeneral Hydrostatic Test Relief Valve Piping Temperature & Pressure GaugeCold Water Operation Pump Selection Hydronic HeatingFeedwater Regulator Cold Water StartsAir-Separation/Expansion Tank PipingModel 20F 30F 40F Min. Flow Max. Flow Gpm Domestic Hot Water Three-Way ValvesPotable Water and Space Heating Pool HeatingMake final adjustments when pool water approaches Winterizing Your Heater Pool/Spa Water ChemistryExceed 5 ppm Gas Supply Connection Gas SupplyGas Supply Pressure Automatic Chlorinators Chemical FeedersModel In. NPT 4 in. NPT 2 in. NPT Electrical Power ConnectionsManifold Gas Pressure Model High Fire ValuesField-Connected Controllers Check the Power SourceMaking the Electrical Connections Venting Field Wiring ConnectionAppliance Categories Support of Vent Stack InstallationsVent Terminal Location Venting Configurations Venting Installation TipsCanadian Installations InstallationCpvc TerminationCommon Venting VolumeVent Model Pressure Flue ProductsHorizontal Through-the-Wall Venting Horizontal Through-the-Wall Direct Venting CategoryModel Certified Direct Vent-VerticalCombustion Air Air Inlet Horizontal Max. Length** ft Vent 10 ØOutdoor Installation Freeze Protection ControlsOperating Modes Mode 2 Primary/Secondary Piping Mode 7 Primary/Secondary Piping with External Target Temp 10 VDC 20 mA Modes Default Setting Range10 VDC 20 mA Boiler Target Definitions Operation Number Field Type Fault DescriptionRank Heater Sequence of Operation High Limit-Manual ResetIgnition Module Code ConditionModulating Temperature Control High Limit-Auto Reset OptionalFlow Switch High & Low Gas Pressure Switches OptionalBlocked Vent Switch Air Pressure SwitchUDB Diagnostic Board Wiring Diagrams Models Models Pre Start-up START-UPPre Start-up Check Initial Start-upStart-Up PreparationBlower Check Model Air Pressure Setting Setting in. WC Safety InspectionModel Amp Draw Setting Manifold CheckFollow-Up Leak Test Procedure Dual-Seat Gas ValveLighting Instructions OperationPost Start-Up Check To Turn Off Gas To Appliance Step TroubleshootingUDB Fault History MaintenanceSuggested Minimum Maintenance Schedule Periodically Preventive Maintenance ScheduleWeekly Semi-AnnuallyFilter Replacement Filter MaintenanceAs Required Inside Air Contamination AppendixImportant Instructions for the Commonwealth of Massachusetts Limited Parts Warranty MVB Types H and WH START-UP Checklist for FAN-ASSISTED Raypak Products
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Manual 58 pages 52.53 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.