Rheem Raypa DELTA 399B Installation And Operation Manual
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Rheem Raypa DELTA 399B Installation And Operation Manual

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INSTALLATION AND
OPERATION MANUAL
Models 399B–2339B
Types H & WH
NOTICE
SCAN WITH QR EQUIPPED SMART
DEVICE FOR ONLINE MANUAL.
SEE PAGE 64 FOR QR CODE.
If these instructions are not followed exactly, a fire or explosion may result
WARNING:
A
causing property damage, personal injury or death
FOR YOUR SAFETY: Do not store or use gasoline or other flammable vapors and liquids or other
combustible materials in the vicinity of this or any other appliance. To do so may result in an explosion
or fire.
WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's phone. Follow the gas
supplier's instructions.
• If you cannot reach your gas supplier, call the fire department.
Installation and service must be performed by a qualified installer, service agency or the gas
supplier.
This manual should be maintained in legible condition and kept adjacent to the heater or in another safe place for
future reference.
.
Effective: 07-28-23
Replaces: 06-30-23
P/N: 241330 Rev. 8
1

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Summary of Contents for Rheem Raypa DELTA 399B

  • Page 1 INSTALLATION AND OPERATION MANUAL Models 399B–2339B Types H & WH NOTICE SCAN WITH QR EQUIPPED SMART DEVICE FOR ONLINE MANUAL. SEE PAGE 64 FOR QR CODE. If these instructions are not followed exactly, a fire or explosion may result WARNING: causing property damage, personal injury or death FOR YOUR SAFETY: Do not store or use gasoline or other flammable vapors and liquids or other combustible materials in the vicinity of this or any other appliance.
  • Page 2 Revision 8 reflects the following changes: Added two warnings regarding carbon monoxide to “Warnings” section per ANSI Z21.13_22 Chapters 4.33.1 b and 4.34 i.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS WARNINGS APPENDIX BEFORE INSTALLATION Inside Air Contamination ILLUSTRATED PARTS LIST Product Receipt Model Identification QR CODE Ratings and Certifications WARRANTY Installations at Elevation START-UP CHECKLIST Component Locations General Information GENERAL SAFETY Time/Temperature Relationships in Scalds INSTALLATION Installation Codes Equipment Base Stacking Clearances...
  • Page 4 WARNINGS Pay Attention to These Terms Indicates the presence of immediate hazards which will cause severe ADANGER: personal injury, death or substantial property damage if ignored. Indicates the presence of hazards or unsafe practices which could cause AWARNING: severe personal injury, death or substantial property damage if ignored. Indicates the presence of hazards or unsafe practices which could cause ACAUTION: minor personal injury or product or property damage if ignored.

  • Page 5: Before Installation

    BEFORE the lower right outside jacket of the heater. The model number will have the form H8 1259B or similar INSTALLATION depending on the heater size and configuration. The letter(s) in the first group of characters identifies the application (H = Hydronic Heating, WH = Domestic Raypak strongly recommends that this manual be re- Hot Water (DHW)).

  • Page 6: Component Locations

    Component Locations OPTIONAL FLUE CONNECTION Fig. 1: Component Locations – Back Fig. 2: Component Locations – Left Side OPERATIONAL CENTER GAS TRAIN CONTROL COMBUSTION BLOWER PRESSURE RELIEF VALVE IGNITER HEAT EXCHANGER BURNER GROUP REMOTE SENSOR Panels removed for clarity Fig. 3: Component Locations – Front...

  • Page 7: General Information

    General Information Quantity of Vent Size in. (mm) Model Burners Gas Valves Blowers Flue Intake 399B 6 (152) 6 (152) 499B 6 (152) 6 (152) 649B 8 (203) 6 (152) 749B 8 (203) 6 (152) 899B 8 (203) 6 (152) 989B 10 (254) 10 (254)

  • Page 8: General Safety

    GENERAL SAFETY To meet commercial hot water use needs, the high limit safety control on this water heater is adjustable up to 210°F. However, water temperatures over 125°F can cause instant severe burns or death from scalds. When supplying general purpose hot water, the rec- ommended initial setting for the temperature control is 125°F.

  • Page 9: Installation

    Equipment Base The temperature of the water in the heater can be reg- ulated by using the temperature controller. To comply with safety regulations, the temperature controller is The heater should be mounted on a level, structurally set at the lowest setting when shipped from the factory. sound surface.
  • Page 10 Fig. 6: Minimum Clearances from Vent/Air Inlet Terminations – Indoor and Outdoor Installations U.S. Installations Canadian Installations Clearance above grade, veranda, porch, 1 ft (30 cm) 1 ft (30 cm) deck, or balcony 4 ft (1.2m) below or to side Clearance to window or door that may be of opening;...

  • Page 11: Clearances

    In addition, the heater shall be installed such that the When installed according to the listed minimum clear- gas ignition system components are protected from ances from combustible construction, these heaters water (dripping, spraying, rain, etc.) during appliance can still be serviced without removing permanent operation or service (circulator replacement, control structural construction around the heater.

  • Page 12: Combustion And Ventilation Air

    6" MIN (15.2 cm) 12" MIN (30.5 cm) RECOMMENDED RECOMMENDED Reversing Air Filter Follow these instructions to change the air duct con- nection from the left-hand side (standard) to the right- hand side: 1. Remove the four screws and the dust cover from the right-hand side of the heater.
  • Page 13 space shall be considered in making this determina- tion. Each opening shall have a minimum free area of b. Not less than the sum of the areas of all vent 1 in. per 1,000 BTUH (2,225 mm per kW) of the to- connectors in the confined space.

  • Page 14: Water Piping

    of not less than 1 in. for each 30,000 BTUH mm 5. Remove all plumbing fittings to the header. This per kW) of total rated input of the burner(s), and will include both inlet and outlet water pipe unions the location of the opening(s) shall not interfere and the pressure relief valve and drain piping.
  • Page 15 ACAUTION: Damaging internal condensation may occur if the heater inlet water temperature does not exceed 105ºF (41ºC) within 7-minutes of start-up. Models 399B–899B Models 989B–2339B Fig. 9: Torque Sequence...

  • Page 16: Hydronic Heating

    Cold Water Run Temperature & Pressure Gauge Cold water run differs from cold water start in that the The temperature and pressure gauge is factory-mount- system water entering the heater remains below 105ºF ed in the in/out header. (41ºC) continuously. Typically, this is the case in swim- ming pool heating and water source heat pump appli- Hydronic Heating cations as well as some others.
  • Page 17 Pressure Drop in Feet of Head heaters which are not subject to thermal shock. Ray- pak offers a full line of electronic sequencers that pro- Feedwater Regulator duce direct reset of heater water temperature. (Refer Raypak recommends that a feedwater regulator be in- to the Controls section of the Raypak Catalog.) stalled and set at 12 psi minimum pressure at the high- est point of the system.

  • Page 18: Gas Supply

    Potable Water and Space Heating ACAUTION: When this heater is used for both potable water and space heating, observe the following to ensure proper operation. 1. All piping materials and components connected to the water heater for the space heating application shall be suitable for use with potable water.
  • Page 19 Gas piping must have a sediment trap ahead of the The heater and its gas connections shall be leak-tested heater gas controls, and a manual shut-off valve locat- before placing the appliance in operation. Use soapy ed outside the heater jacket. It is recommended that a water for leak test.
  • Page 20 Gas Supply Pressure ACAUTION: Support gas supply piping with A minimum of 5.0 in. WC and a maximum of 10.5 in. hangers, not by the heater or its accessories. WC upstream gas pressure is required under load Make sure the gas piping is protected from and no-load conditions for natural gas.

  • Page 21: Electrical Power Connections

    Electrical Power Connections BLACK CIRCUIT BREAKER Installations must follow these codes: WHITE • National Electrical Code and any other national, state, provincial or local codes or regulations hav- GREEN ing jurisdiction. GROUND • Safety wiring must be NEC Class 1. •...

  • Page 22: Field Wiring Connection

    ACAUTION: Label all wires prior to disconnection 3. Observe proper wire colors while making electrical when servicing controls. Wiring errors can cause connections. Many electronic controls are polari- improper and dangerous operation. Verify proper ty sensitive. Components damaged by improper operation after servicing.
  • Page 23 Fig. 22: 3-Stage Wiring Connections Fig. 23: 4-Stage Wiring Connection Fig. 21: 2-Stage Wiring Connections...
  • Page 24 Installer action is required to electrically enable your 3. For single-stage controller connections, attach the heater to operate after making the power connections. stage 1 connections on heater 1 to the tankstat per You must make a closed contact connection on Stage Fig.

  • Page 25: Venting

    Venting Category IV – A heater which operates with a pos- itive vent pressure and with a vent gas temperature that may cause excessive condensate production in ACAUTION: Proper installation of flue venting the vent. is critical for the safe and efficient operation of the heater.
  • Page 26 Use insulated vent pipe spacers where the vent pass- 8. Locate and guard vent termination to prevent acci- es through combustible roofs and walls. dental contact by people or pets. 9. DO NOT terminate vent in window well, stairwell, Vent Terminal Location alcove, courtyard or other recessed area.

  • Page 27: Changing The Flue Outlet

    Changing the Flue Outlet 5. Terminate vent at least 6 ft away from adjacent walls. Follow these instructions to change the flue connection 6. DO NOT terminate vent closer than 5 ft below roof from the standard top location to the rear of the heater overhang.

  • Page 28: Venting Configurations

    Venting Configurations 8’ OR LESS (MODEL 992B) 10’ OR LESS (ALL OTHER MODELS) For heaters connected to gas vents or chimneys, vent installations shall be in accordance with the NFGC (U.S.), or B149 (Canada), or applicable provisions of local building codes. Natural Draft Vertical Venting (Category I) Installation...
  • Page 29 Manifolds that connect more than one heater to a com- 1. Seal any unused opening in the common venting mon chimney must be sized to handle the combined system. load. Consult available guides for proper sizing of the manifold and the chimney. At no time should the area 2.
  • Page 30 4. Place in operation the appliances being inspected. Horizontal Through-the-Wall Venting Follow the manufacturer’s instructions for lighting (Category III) each appliance. Adjust thermostat so appliance will operate continuously. Installation 5. Check the pressure at a pressure tap located 12 These installations utilize the heater-mounted blower in.
  • Page 31 Combustion Certified Maximum Air Inlet Max. Length* Model Vent Venting Equivalent Size Intake Pipe Material Vent Length* 6” 8” 10” 12” Material 399B 100’ 6” 499B 75’ 649B 100’ 40’ 749B 8” 899B 30’ 80’ 70’Room Air Galvanized 989B 10” Category III Steel, 40’...

  • Page 32: Outdoor Installation

    Use only the special gas vent pipes listed for use with NOTE: Condensate can freeze on the vent cap. Category III gas burning heaters, such as the AL29- Frozen condensate on the vent cap can result in 4C stainless steel vents offered by Heat Fab Inc. (800- a blocked flue condition.

  • Page 33: Heater Sequence Of Operation

    3. 120 VAC is waiting at the N.O. contacts of the pump delay relay. 4. Terminals L1 and F1 of the ignition module are powered with 120VAC. 5. 120 VAC power is also applied to the control pow- er connector on the circuit board. 6.
  • Page 34 17. The “standby switch” (rocker switch) located at the 32. The 24 VAC signal is then sent to the 24 VAC safe- lower left front of the control compartment is now ty connector. powered. If the switch is “ON” and there is no call for heat (CFH), the heater is in standby mode.
  • Page 35 44. After closure of the stage 3 contacts Gas valve 2 is 14. 24 VAC power now leaves pin P3-16 of J-5 on the energized. CPW board and is sent to the auto-reset high limit (optional). If closed the power now goes to termi- 45.
  • Page 36 valve 1 again. The standard ignition module will 29. The 120 VAC signal continues to the coil of relay K-4 (N.O.). attempt ignition a maximum of three times prior to ignition lockout. 30. The 120 VAC signal continues to the 120 VAC safety terminals located at J-13 on the circuit 42.
  • Page 37 56. The stage 4 temperature controller contacts close. The standard ignition module will attempt to light three times before locking out. To reset it, turn off power to 57. Power is sent to gas valve 4. the heater, wait 30 seconds and re-apply power. 58.
  • Page 38 sheets supplied with your heater paperwork. See the switch automatically shuts down the burner. The high General Safety Section for safety precautions con- gas pressure switch automatically shuts down the cerning domestic hot water applications. heater if gas manifold pressure rises above the recom- mended setting of 5.0 in.

  • Page 39: Wiring Diagrams

    Wiring Diagram - Models 399B–1259B...
  • Page 40 Wiring Diagram - Models 1529B–2339B...

  • Page 41: Start-Up

    START - UP • If you cannot reach your gas supplier, call the fire department. Pre Start-up • Use only your hand to push in or turn the gas con- trol knob. Never use tools. If the knob will not turn Filling System (Heating Boilers) by hand, do not try to repair it, call a qualified ser- vice technician.

  • Page 42: Start-Up

    Start-Up Preparation Blower Adjustment AWARNING: Do not turn on gas at this time. 1. Turn off power. Check Power Supply 2. Unplug cap at pressure switches and connect ma- nometer(s) to the tee. With multi-meter at incoming power, check voltage be- tween: 3.
  • Page 43 Safety Inspection The burner section that is ignited directly by the hot surface ignition system serves as a supervised pilot to light the burner sections on either side of it. The burner 1. Check all thermostats and high limit settings. sections on either side of the supervised section (pilot) are electrically interlocked with the supervised ignition 2.
  • Page 44 1. Manually close the downstream leak test valve. This completes leak testing for a single Delta Limited manifold riser. Repeat steps 1-8 for each riser. 2. Open test point A and connect a manometer to it. Post Start-Up Check Verify that there is gas pressure and that it is within the proper range (NOTE: must not exceed 14.0 in.

  • Page 45: Operation

    11. Check to see that the high limit control is set above the design temperature requirements of the sys- 9. Set thermostat to desired setting. The appliance tem. will operate. The igniter will glow after the pre- purge time delay (15 seconds). After igniter reach- For multiple zones: Check to make sure the flow is es temperature (45 seconds) the main valve will adjusted as required in each zone.

  • Page 46: Troubleshooting

    TROUBLESHOOTING Does the power switch provide power to the Check the switch control panel? Step 1 and/or line voltage Replace ignition module Is enable/disable jumper intact (J1)? Reattach Check all safety limit devices and voltage from the transformer to J10 on Unit is in standby mode.

  • Page 47: Maintenance

    MAINTENANCE 4. Check for and remove any obstruction to the flow of combustion or ventilation air to heater. 5. Follow pre start-up check in the Start-up section. Suggested Minimum Maintenance Schedule 6. Visually inspect burner flame. It should be light blue.
  • Page 48 Weekly 6. Perform leakage test on gas valves. (See Fig. 37.) 7. Test air switch in accordance with manufacturer’s For low-pressure heaters, test low-water cut-off de- instructions. (Turn panel switch to the “On” posi- vice. (With at least one stage of the appliance on, tion until blower is proven, then turn the switch to depress the low water cut-off test button, appliance “Off”.

  • Page 49: Warnings 4 Appendix

    APPENDIX • furniture refinishing areas and establishments • new building construction • remodeling areas Inside Air Contamination • open pit skimmers Check for areas and products listed above before All heaters experience some condensation during start- in-stalling heater. If found, remove products perma- up.

  • Page 50: Product Receipt 5 Illustrated Parts List

    ILLUSTRATED PARTS LIST (MODELS 399B-899B) 11-M 13-S 14-S DIAGNOSTIC SEE DETAIL 10-S 12-S 14-S 11-S 13-S 15-S 17-S 11-S 12-M SEE DETAIL SEE DETAIL Fig # 241127...
  • Page 51 DIAGNOSTIC DETAIL 12-J 16-S BLOWER DETAIL...
  • Page 52 HEAT EXCHANGE DETAIL 13-M 14-M BURNER ASSEMBLY DETAIL...
  • Page 53 CONTROL BOX DETAILS 13-J 10-J 11-J 14-J...
  • Page 54 CALL DESCRIPTION 399B 499B 649B 749B 899B BURNER ASSEMBLY Burner Assy w/Burners 009718F 009719F 009720F 009721F 009722F Burner Mounting Assy 009724F 009725F 009726F 009727F 009728F Burner 007442F 007442F 007442F 007442F 007442F Seal Gasket 007443F 007443F 007443F 007443F 007443F Manifold Upper 007444F 007444F 007444F...
  • Page 55 CALL DESCRIPTION 399B 499B 649B 749B 899B CONTROL BOX Control Box Ignition Control 007374F 007374F 007374F 007374F 007374F Ignition Control with Manual Reset 009057F 009057F 009057F 009057F 009057F Printed Circuit Board CPW 009626F 009626F 009626F 009626F 009626F Relay DPDT 24VAC (K1 & K2) 009688F 009688F 009688F...
  • Page 56 CALL DESCRIPTION 399B 499B 649B 749B 899B REFRACTORY Refractory Kit (All Panels) 007402F 007403F 007404F 007405F 007406F Refractory Front Panels 007408F 007409F 007410F 007411F 007412F Refractory Blanket 009864F 009865F 009866F 009867F 009868F SHEETMETAL Jacket Top 009741F 009742F 009743F 009744F 009745F Upfront Control Panel 012344F 012344F...
  • Page 57 ILLUSTRATED PARTS LIST (MODELS 989B-2339B)
  • Page 58 HEAT EXCHANGER DETAILS 12-H BURNER ASSEMBLY DETAILS...
  • Page 59 CONTROL BOX DETAILS FRONT SWITCH DETAILS 10-J/3-O 23-S 10-J/3-O 13-J...
  • Page 62 CALL DESCRIPTION 989B 1259B 1529B 1799B 1999B 2069B 2339B MISCELLANEOUS Flow Switch Paddle 010026F 010026F 010026F 010026F 010026F 010026F 010026F PRV 30 PSI 007748F 007748F 007748F 007748F 008088F 008088F 008088F PRV 45 PSI 007221F 007751F 007751F 007752F 007752F 007752F 007752F PRV 60 PSI 007222F 007753F...
  • Page 63 CALL DESCRIPTION 989B 1259B 1529B 1799B 1999B 2069B 2339B Refractory Kit (All Panels) 007760F 007761F 007762F 007763F 007764F 007764F 007765F 2-R Refractory Front Panels 007766F 007767F 007768F 007769F 007770F 007770F 007771F 3-R Refractory Blanket 009869F 009870F 009871F 009872F 009873F 009873F 009874F SHEETMETAL Jacket Top...
  • Page 64 QR CODE View this Installation Manual on your smart device. The QR Code will take you to the most current version of the installation manual. Previous versions of manuals can be found in the document library at Raypak.com. P/N: 241330 HI DELTA LIMITED H WH 399B-2339B...

  • Page 65: Ratings And Certifications 5 Warranty

    LIMITED PARTS WARRANTY DELTA LIMITED – TYPES H AND WH MODELS 399B–2339B SCOPE Raypak, Inc. (“Raypak”) warrants to the original owner that all parts of this heater which are actually manufactured by Raypak will be free from failure under normal use and service for the specified warranty periods and subject to the conditions set forth in this Warranty. Labor charges and other costs for parts removal or reinstallation, shipping and transportation are not covered by this Warranty but are the owner’s responsibility.
  • Page 67 NOTES Raypak, Inc., 2151 Eastman Avenue, Oxnard, CA 93030 (805) 278-5300 Litho in U.S.A.

This manual is also suitable for:

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