Raypak 503-2003 manual Operating Modes, Definitions, Operation

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SECTION C: Installation

The Raypak modulating temperature control is pro- vided to maintain the desired system water temperature. The control has various modes of operation which are listed below.

Operating Modes

Mode 1 – Setpoint operation using parallel piping. The heater outlet water temperature is controlled to the boiler target setpoint.

Mode 2 – Setpoint operation using primary / secondary piping. The control modulates the heater to satisfy a remote header sensor. The heater is turned off based on boiler max and boiler differential (factory default H7 boilers).

Mode 3 – Dedicated DHW operation using parallel piping. A call for heat is determined by the DHW sen- sor. The heater outlet water is controlled to the boiler target temperature (factory default WH7 water heaters).

Mode 4 – Outdoor reset and reset override operation using parallel piping. The heater is operated as in Mode

1.However the target temperature is based on outdoor reset. The outdoor reset temperature can be remotely overridden.

Mode 5 – Outdoor reset and reset override operation using primary/secondary piping. The heater is operated as in Mode 2. However, the target temperature is based on outdoor reset. The outdoor reset temperature can be remotely overridden.

Mode 6 – This mode is used for remote control mode. The Boil Max setting is the heater shutdown tempera- ture.

Definitions

The following items are common to Modes 1 thru 5. They are not required for Mode 6 – the mode for exter- nal heater control.

%OUT - Current percent modulation rate of heater

BOIL DSGN - Design boiler water temperature used in heat loss calculations

BOIL MASS - This setting allows adjustment in the field for high or low thermal masses; High thermal mass (setting=3) provides slower reaction, lower ther- mal mass (setting=1) provides faster reaction

BOIL MAX - Highest outlet water temperature that the control is allowed to use as a target temperature

BOIL MIN - Lowest outlet water temperature that the control is allowed to use as a target temperature

BOIL ON - Accumulated runtime of heater (up to 999 hours, then resets to 0)

BOIL OUT - Actual heater outlet water temperature

BOIL START - Starting boiler water temperature

BOIL SUP - Actual system supply water temperature

BOIL TARGET - Target temperature that the heater is trying to maintain

‘BURNER’ DELAY - Heater delay from the start of the ignition sequence until it fires

DIFF - The operating differential of the heater; The heater outlet water temperature is allowed to rise above the BOIL TARGET temperature by 1/2 of this differ- ential before the heater shuts off

MODE - Operating mode of the heater

OUTDR - Outdoor air temperature

OUTDR DESIGN - Design outdoor air temperature used in the heat loss calculation

OUTDR START - Starting outdoor air temperature

PUMP DLY - Sets the operating time of the pump once the CFH is satisfied

TANK - Current DHW tank temperature (Mode 3)

TANK DIFF - Storage tank differential (Mode 3)

TANK TARGET - Target temperature in the DHW storage tank (Mode 3)

UNITS - Selects the temperature units to be displayed (oF or oC). For example, if the heater target temperature is set to 160°F and the differential is set to 10°F, on temperature rise, the heater will shut off at 165oF. Once the heater shuts off, it will not come on again until the temperature falls to 155oF.

WWSD - Selects the outdoor temperature that shuts the heater off, no matter what the demand. NOTE: The WWSD segment is displayed on the LCD.

Operation

The Raypak modulating temperature control uses a Liquid Crystal Display (LCD) as a method of supply- ing information. The LCD is used to setup and monitor

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Contents Installation Operating Instructions Page Table of Contents PAY Attention to These Terms Model Identification Before InstallationSection a Product ReceiptWater Gas Vent Size Model Conn Input Installations at ElevationComponent Locations General InformationSection B Hot Water Supply General SafetyWater Temp Time to Produce Serious Burn Time/Temperature Relationships in ScaldsEquipment Base InstallationInstallation Codes Section CInstallations1 Canadian Installations2 Indoor Units Outdoor InstallationsHeater Min. Clearance Recommended From Combustible Service Combustion and Ventilation AirTruSeal Combustion Air InstallationsOptional Construction Air Filter Direct VentWater Piping Canadian InstallationsGeneral Cold Water Operation Relief Valve Piping Hydrostatic TestCold Water Starts ∆P ft Gpm Temperature & Pressure GaugeCold Water Run Model 20F∆T 30F∆T 40F∆T Min. Flow Max Flow Gpm ∆P ftDomestic Hot Water Hydronic HeatingPool Heating Potable Water and Space HeatingWinterizing Your Heater Automatic Chlorinators and Chemical FeedersPH of Water Gas SupplyPool/Spa Water Chemistry Water HardnessGas Supply Pressure Gas Supply ConnectionModel NPT 4 NPT 2 NPT Check the Power Source Electrical Power ConnectionsField-Connected Controllers Making the Electrical Connections Field Wiring ConnectionInlet Material VentingAppliance Categories Support of Vent StackVent Terminal Location Canada InstallationsVertical Venting Category Venting Installation TipsVenting Configurations InstallationTermination Vent Size Volume Model Pressure Flue Products In. WCCommon Venting Typical Common Venting Horizontal Through-the-Wall Direct Venting CategoryHorizontal Through-the-Wall Direct Venting Direct Vent Vertical Direct Vent VerticalControls Outdoor InstallationFreeze Protection Definitions Operating ModesOperation Modulating Temperature Control User Interface Modes Default RangeModel 503 Heater Sequence of OperationModel 1753 Section C Installation Ignition Module Code Condition High Limit Manual ResetHigh Limit Auto Reset Optional Flow SwitchLow Water Cut-Off Optional Modulating Temperature ControlHigh and Low Gas Pressure Switches Optional Air Pressure SwitchUDB Diagnostic Board Blocked Vent SwitchModels Wiring DiagramsModels Section C Installation Start-up Section DPre Start-up Initial Start-up Blower AdjustmentStart-Up Pre Start-up CheckManifold Adjustment Leak Test Procedure Dual-Seat Gas Valve Safety InspectionFollow-Up Post Start-Up Check Leak Test ProcedureSection D Start up To Turn Off Gas To Appliance Section EOperation Lighting InstructionsSection E Operation Section F TroubleshootingUDB Fault History Suggested Minimum Maintenance Schedule MaintenanceSection G Preventive Maintenance Schedule Appendix Section HInside Air Contamination Limited Parts Warranty MVB Types H and WH
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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.
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