Rheem Raypak Delta Limited 399B Installation & Operating Instructions Manual
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Rheem Raypak Delta Limited 399B Installation & Operating Instructions Manual

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INSTALLATION & OPERATING
Models 399B–2339B
Types H & WH
WARNING: If these instructions are not followed exactly, a fire or explosion may
result 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: 03-31-21
APPROVED
INSTRUCTIONS
Replaces: 10-15-18
UNCONTROLLED DOCUMENT IF PRINTED
L
W
.
P/N 241330 Rev. 5

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  • Page 1 APPROVED INSTALLATION & OPERATING INSTRUCTIONS Models 399B–2339B Types H & WH WARNING: If these instructions are not followed exactly, a fire or explosion may result 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 APPROVED Revision 5 reflects the following changes: Note added to “Termination” section on page 31 for vent and intake pipe material certified standards. Updated the “Horizontal Through-the-Wall Venting (Category III) Installation” section adding a third point on page 31. Updated the “Periodically” section point number 3 on page 47. UNCONTROLLED DOCUMENT IF PRINTED...

  • Page 3: Table Of Contents

    APPROVED CONTENTS WARNINGS APPENDIX BEFORE INSTALLATION Inside Air Contamination WARRANTY Product Receipt START-UP CHECKLIST Model Identification Ratings and Certifications Installations at Elevation Component Locations General Information GENERAL SAFETY Time/Temperature Relationships in Scalds INSTALLATION Installation Codes Equipment Base Stacking Clearances Combustion and Ventilation Air Conventional Combustion Air Supply Water Piping...
  • Page 4 APPROVED WARNINGS Pay Attention to These Terms Indicates the presence of immediate hazards which will cause severe DANGER: personal injury, death or substantial property damage if ignored. Indicates the presence of hazards or unsafe practices which could cause WARNING: severe personal injury, death or substantial property damage if ignored. Indicates the presence of hazards or unsafe practices which could CAUTION: cause minor personal injury or product or property damage if ignored.

  • Page 5: Before Installation

    APPROVED 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 Hot Water (DHW)).

  • Page 6: Component Locations

    APPROVED Component Locations OPTIONAL FLUE CONNECTION Fig. 1: Component Locations – Back Fig. 2: Component Locations – Left Side Panels removed for clarity Fig. 3: Component Locations – Front UNCONTROLLED DOCUMENT IF PRINTED...

  • Page 7: General Information

    APPROVED General Information Quantity of Vent Size (in.) Model Burners Gas Valves Blowers Flue Intake 399B 499B 649B 749B 899B 989B 1259B 1529B 1799B 1999B 2069B 2339B Table A: Basic Data Burners per Valve Stages % Fire at Stage Model 399B 499B 1, 2...

  • Page 8: General Safety

    APPROVED 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

    APPROVED 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 fac- sound surface.
  • Page 10 APPROVED 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

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

  • Page 12: Combustion And Ventilation Air

    APPROVED 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. 2. Remove the four screws and the air filter bracket from the left-hand side of the heater.
  • Page 13 APPROVED space shall be considered in making this determina- tion. Each opening shall have a minimum free area b. Not less than the sum of the areas of all vent of 1 in. per 1,000 BTUH (2,225 mm per kW) of the connectors in the confined space.

  • Page 14: Water Piping

    APPROVED 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 APPROVED CAUTION: 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 UNCONTROLLED DOCUMENT IF PRINTED...

  • Page 16: Hydronic Heating

    APPROVED Temperature & Pressure Gauge The temperature and pressure gauge is factory-mount- ed in the in/out header. Hydronic Heating Cold Water Run Pump Selection Cold water run differs from cold water start in that In order to ensure proper performance of your heater the system water entering the heater remains below system, you must install a correctly sized pump.
  • Page 17 APPROVED Pressure Drop in Feet of Head heaters which are not subject to thermal shock. Raypak offers a full line of electronic sequencers that Feedwater Regulator produce direct reset of heater water temperature. Raypak recommends that a feedwater regulator be (Refer to the Controls section of the Raypak Catalog.) in-stalled and set at 12 psi minimum pressure at the highest point of the system.

  • Page 18: Gas Supply

    APPROVED Potable Water and Space Heating CAUTION: 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 APPROVED regulator must be installed to reduce the gas supply pressure to a maximum of 10.5 in. WC for natural gas and 13.0 in. WC for propane gas. The regulator should be placed a minimum distance of 10 times the pipe diameter up-stream of the heater gas controls.
  • Page 20 APPROVED diate gas pressure regulator, of the lockup type, must CAUTION: Support gas supply piping with hangers, be installed. not by the heater or its accessories. Make sure the gas piping is protected from physical damage and When connecting additional gas utilization equipment freezing, where required.

  • Page 21: Electrical Power Connections

    APPROVED Electrical Power Connections BLACK CIRCUIT Installations must follow these codes: BREAKER 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

    APPROVED prior to working with any electrical connections or DANGER: SHOCK HAZARD components. 3. Observe proper wire colors while making elec- tri-cal connections. Many electronic controls are CAUTION: Label all wires prior to disconnection polarity sensitive. Components damaged by when servicing controls. Wiring errors can cause improper electrical installation are not covered by im-proper and dangerous operation.
  • Page 23 APPROVED Fig. 21: 3-Stage Wiring Connections Fig. 22: 4-Stage Wiring Connection Fig. 20: 2-Stage Wiring Connections UNCONTROLLED DOCUMENT IF PRINTED...
  • Page 24 APPROVED 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

    APPROVED Venting vent pressure and with a vent gas temperature that may cause excessive condensate production in the vent. CAUTION: Proper installation of flue venting is criti- See Table K for appliance category requirements. cal for the safe and efficient operation of the heater. NOTE: For additional information on appliance categorization, see appropriate ANSI Z21 Standard General...
  • Page 26 APPROVED Use insulated vent pipe spacers where the vent pass- 8. Locate and guard vent termination to prevent es through combustible roofs and walls. acci-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

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

  • Page 28: Venting Configurations

    APPROVED 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 APPROVED Common Venting System lowed with each appliance remaining connected to the common venting system placed in operation, while the Manifolds that connect more than one heater to a com- other appliances remaining connected to the common mon chimney must be sized to handle the combined venting system are not in operation.
  • Page 30 APPROVED Horizontal Through-the-Wall Venting speed. Do not operate summer exhaust fan. Close fireplace dampers. (Category III) 4. Place in operation the appliances being inspected. Installation Follow the manufacturer’s instructions for lighting each appliance. Adjust thermostat so appliance These installations utilize the heater-mounted blow- will operate continuously.
  • Page 31 APPROVED 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”...

  • Page 32: Outdoor Installation

    APPROVED Use only the special gas vent pipes listed for use with Category III gas burning heaters, such as the AL29-4C NOTE: Condensate can freeze on the vent cap. stainless steel vents offered by Heat Fab Inc. (800- Frozen condensate on the vent cap can result in a 772-0739), Protech System, Inc.

  • Page 33: Heater Sequence Of Operation

    APPROVED 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 power connector on the circuit board. 6.
  • Page 34 APPROVED 17. The “standby switch” (rocker switch) located at the 32. The 24 VAC signal is then sent to the 24 VAC lower left front of the control compartment is now safety connector. powered. If the switch is “ON” and there is no call for heat (CFH), the heater is in standby mode.
  • Page 35 APPROVED 44. After closure of the stage 3 contacts Gas valve 2 is energized. 14. 24 VAC power now leaves pin P3-16 of J-5 on the 45. The Heater is now operating at full fire. CPW board and is sent to the auto-reset high limit (optional).
  • Page 36 APPROVED 28. Once the 24 VAC “TH” signal is received, a 120 shut down the gas valve and retry the hot surface VAC signal is sent from F2 on ignition module 1 to igniter. During ignition retry the heater must per- the 120 VAC pilot duty terminals, located at J-14 form a 15-second pre-purge and an approximately on the circuit board.
  • Page 37 APPROVED 55. Power is now applied to time delay relay 3 and the The standard ignition module will attempt to light three contacts of TD-3 located upstream of the stage 4 times before locking out. To reset it, turn off power to connection close after 5 seconds.
  • Page 38 APPROVED 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 APPROVED UNCONTROLLED DOCUMENT IF PRINTED...
  • Page 40 Wiring Diagram - Models 1529B–2339B APPROVED UNCONTROLLED DOCUMENT IF PRINTED...

  • Page 41: Start-Up

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

  • Page 42: Start-Up

    APPROVED Start-Up Preparation Blower Adjustment WARNING: Do not turn on gas at this time. 1. Turn off power. 2. Unplug cap at pressure switches and connect Check Power Supply ma-nometer(s) to the tee. With multi-meter at incoming power, check voltage 3.
  • Page 43 APPROVED 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 APPROVED 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 Post Start-Up Check it. Verify that there is gas pressure and that it is within the proper range (NOTE: must not exceed 14.0 in.

  • Page 45: Operation

    APPROVED 10. To restart system, follow lighting instructions in the 9. Set thermostat to desired setting. The appli- Operation section. ance will operate. The igniter will glow after the pre-purge time delay (15 seconds). After igniter 11. Check to see that the high limit control is set reaches temperature (45 seconds) the main valve above the design temperature requirements of the will open.

  • Page 46: Troubleshooting

    APPROVED 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

    APPROVED 4. Check for and remove any obstruction to the flow MAINTENANCE 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 APPROVED Weekly 6. Perform leakage test on gas valves. (See Fig. 36.) 7. Test air switch in accordance with manufacturer’s For low-pressure heaters, test low-water cut-off instructions. (Turn panel switch to the “On” posi- device. (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

    APPROVED • furniture refinishing areas and establishments APPENDIX • 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 in-stalling heater. If found, remove products perma- start-up.

  • Page 50: Product Receipt 5 Warranty

    APPROVED 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 Wa rranty. Labor charges and other costs for parts removal or reinstallation, shipping and transportation are not covered by this Warranty but a re the owner’s responsibility.

  • Page 51: Model Identification 5 Start-Up Checklist

    APPROVED START-UP CHECKLIST FOR FAN-ASSISTED RAYPAK PRODUCTS This start-up checklist is to be completely filled out by the service technician starting up the Raypak Boiler or Heater for the first time. All information may be used for warranty purposes and to ensure that the installation is correct. Additionally this form will be used to record all equipment operation functions and required settings.
  • Page 52 APPROVED www.raypak.com Raypak, Inc., 2151 Eastman Avenue, Oxnard, CA 93030 (805) 278-5300 Fax (805) 278-5468 Litho in U.S.A. UNCONTROLLED DOCUMENT IF PRINTED...

This manual is also suitable for:

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