Raypak 336A Installation & Operating Instructions Manual
Gas-fired pool & spa heater
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- Installation & operating instructions manual (60 pages) ,
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- Replacement instructions manual (18 pages)
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INSTALLATION & OPERATING
Gas-Fired
Pool & Spa
Heater
Atmospheric Models
206A, 266A, 336A & 406A
WARNING: If these instructions are not followed exactly, a fire or explosion may result
causing property damage, personal injury or death.
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of
this or any other appliance.
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 sup-
plier'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 a safe place for future
reference.
Catalog No. 6000.59AB
INSTRUCTIONS
Effective: 03-15-17
Lo NOx Models
207A, 267A, 337A & 407A
Replaces: 08-15-15
P/N 241236 Rev. 29
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Table of Contents
Related Manuals for Raypak 336A
Summary of Contents for Raypak 336A
- Page 1 Pool & Spa Heater Atmospheric Models Lo NOx Models 206A, 266A, 336A & 406A 207A, 267A, 337A & 407A WARNING: If these instructions are not followed exactly, a fire or explosion may result causing property damage, personal injury or death.
- Page 2 WATER CHEMISTRY (Corrosive water voids all warranties) For your health and the protection of your pool equipment, it is essential that your water be chemically balanced. The following levels must be used as a guide for bal- anced water. Other Pool & Spa Recommended Level(s) Fiberglass Pools Fiberglass Spas Types...
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Page 3: Table Of Contents
CONTENTS PART ONE Wiring Diagram - AFT Models, Lo NOx OWNER'S OPERATING INSTRUCTIONS SECTION 4 SERVICING INSTRUCTIONS SECTION 1 General Location of Controls START-UP PROCEDURES Control Panel Removal Before Start-Up Control Adjustments - AFT Models Lighting Instructions & Shut-Off Procedures - Control Adjustments - Millivolt Models Manually Lighted Pilots MV Thermostat Operation - AFT Board... -
Page 4: Part One
PART ONE OWNER'S OPERATING INSTRUCTIONS FOR YOUR SAFETY - READ BEFORE OPERATING WARNING: IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR EXPLOSION MAY RESULT, CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE. SECTION 1 - START-UP PROCEDURES Your pool/spa heater has been designed for years of safe and reliable pool/spa water heating. -
Page 5: Lighting Instructions & Shut-Off Procedures
CAUTION: Propane gas is heavier than air and will settle on the ground. Since propane can accumulate in confined areas, extra care should be exercised when lighting propane heaters. LIGHTING INSTRUCTIONS AND SHUT-OFF PROCEDURES MILLIVOLT SYSTEM (MANUALLY LIGHTED PILOT) *If you cannot reach your gas supplier, call the This appliance has a pilot that must be lit by fire department. - Page 6 CAUTION: Propane gas is heavier than air and will settle on the ground. Since propane can accumulate in confined areas, extra care should be exercised when lighting propane heaters. OPERATING INSTRUCTIONS AND SHUT-OFF PROCEDURES ELECTRONIC IGNITION SYSTEM (AUTOMATICALLY LIGHTED PILOT) *If you cannot reach your gas supplier, call the This appliance is equipped with an ignition fire department.
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Page 7: After Start-Up
AFTER START-UP Feel the inlet and outlet pipes. Outlet pipe should be only slightly warmer than the inlet. It should not be hot. WARNING: Should overheating occur or the gas supply fail to shut off, turn off the manual gas control to the heater. -
Page 8: Pool & Spa Water Chemistry
SECTION 3 - MAINTENANCE AND 2. Your pump strainer basket may be full. If so CARE PROCEDURES remove debris. 3. Your filter may be dirty. If so, backwash or clean WARNING: Check the heater for possible rodent filter. (To tell if your filter is dirty, look to see if the nests after long periods of non-use. -
Page 9: Cold Weather Operation
WINTERIZING THE POOL & SPA HEATER COLD WEATHER OPERATION IMPORTANT FREEZE INFORMATION Heaters installed outdoors in freezing climate areas may be shut down for the winter. Observe the following procedure for winterizing the heater: MODERATE CLIMATE: Heater operation can contin- ue during short-term cold spells. -
Page 10: Part Two
PART TWO INSTALLATION AND SERVICE INSTRUCTIONS SECTION 1 - RECEIVING EQUIPMENT The manufacturer recommends that this manual be reviewed thoroughly before installing your pool/spa heater. If there are any questions that this manual does not answer, please contact the factory or your local represen- tative. -
Page 11: General Specifications
SECTION 2 - GENERAL SPECIFICATIONS These heaters are design-certified and tested under the latest requirements of the ANSI Z21.56 / CSA 4.7 Standard for Gas-Fired Pool Heaters. All heaters can be used either indoor or outdoors. The appropriate top designated for each type of use is required. If necessary, the top can be changed at a later date to change from outdoor to indoor or vice versa. -
Page 12: Clearances
CLEARANCES ALL HEATERS For clearances from combustible surfaces, see the When installed according to the listed minimum clear- chart below. ances from combustible construction, the pool heater can still be serviced without removing permanent CLEARANCE FROM construction around the heater. COMBUSTIBLE CONSTRUCTION However for ease of servicing, we recommend a clear- INDOOR INSTALLATIONS:... - Page 13 Heaters must not be installed under an overhang of less than three 3 ft from the top of the heater. Three sides must be open in the area under the overhang. Roof water drainage must be diverted away from the heaters installed under overhangs with the use of gutters.
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Page 14: Florida And Texas Building Codes
FLORIDA AND TEXAS BUILDING CODES WIND SPEED = 150 MPH, 3 SECOND GUST EXPOSURE = C 206/266/336/406 Atmospheric MODEL # 20” 23” 26” 29” 40” 28” 2” x 6” x 1/8” Pallet Anchor Bracket (4 Total) (Kit# 011636) 3” Min. Conc. Pad by others 1/4”... -
Page 15: Indoor Heater Installation
(3) Screws (1) Instructions Clips Clips OUTDOOR ** REFER INSTALLATION INSTRUCTIONS INDOOR STACK STACK INSIDE BOX FOR INSTRUCTIONS ON HOW TO INSTALL OUTDOOR/INDOOR STACK. Model Part No. Part No. 206A/207A 009834 009838 266A/267A 009835 009839 336A/337A 009836 009840 406A/407A 009837 009841... - Page 16 SPECIFICATIONS AND DIMENSIONS ATMOSPHERIC UNITS Amp Draw 120 Volt 240 Volt FLUE 10" 8-7/8" 4-3/8" (6-5/8" ASME) (3-3/8" ASME) INDOOR DRAFTHOOD 32-11/16" 40" 38" ELECTRICAL STACKLESS CONNECTION OUTDOOR TOP 26-5/8" (28-5/8" ASME) 13-1/4" CONNECTION 28" Residential, Copper Heat Exchanger Shipping Weight (lbs) Standard BTUH Heater...
- Page 17 SPECIFICATIONS AND DIMENSIONS LO NOx UNITS Amp Draw 120 Volt 240 Volt FLUE 10" 8-7/8” (6-5/8” ASME) 4-3/8” (3-3/8” ASME) INDOOR DRAFTHOOD 34” 26-1/2” STACKLESS ELECTRICAL OUTDOOR 31-13/16" CONNECTION 20-1/2" (22-1/2" ASME) 7-3/4" CONNECTION 28” Shipping Weights (lbs) Standard ASME BTUH Heater Heater...
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Page 18: Combustion And Ventilation Air
010744 009832 production in the vent, and as such, is a CATEGORY III 266/267 010744 009832 appliance. 336/337 010745 009833 Optional Raypak D-2 406/407 010745 009833 Power Vent For more information consult the D-2 Power Vent manual, (Catalog No. 6000.57.1). -
Page 19: Gas Supply Connections
The power vent assembly is a fan-assisted combus- Flue material used must be certified to CATEGORY I tion system designed for application to models 206- or better. Type "B" double-wall or equivalent vent pipe 407. The unit, when installed as directed, is capable of is recommended. -
Page 20: Gas Pressure Regulator
GAS PRESSURE REGULATOR ELECTRONIC IGNITION GAS VALVES-CONTINUED The gas pressure regulator is preset at 4.0 in. WC for natural gas (3.1 in. WC for Lo NOx), and 10.5 in. WC. for propane gas. The pressure at the gas valve, taken with a manometer, should be about 4.0 in. -
Page 21: Flow Rates
FLOW RATES MODEL PIPE SIZE MIN. GPM MAX. GPM* *When flow rates exceed maximum GPM an external auxil- iary bypass valve is required. See external bypass valve 206/207 1-1/4”–1-1/2” - 2” section for details. 266/267 1-1/4”–1-1/2” - 2” 336/337 1-1/4”–1-1/2” - 2” 406/407 1-1/4”–1-1/2”... -
Page 22: Polymer Headers
required, use a silicon base such as AquaLube etc. POLYMER HEADERS (STANDARD MODELS) Before attaching the 2-inch unions to the inlet/outlet There are two sets of flange gaskets supplied with header, make sure the O-rings are properly seated in your heater. Use the appropriate gaskets for all your the grooves. -
Page 23: Internal Automatic Bypass Valve
PRESSURE RELIEF VALVE INSTALLATION INTERNAL AUTOMATIC BYPASS VALVE To conform to local building codes, it may be neces- In addition to the Unitherm Governor, a built-in auto- sary to install a pressure relief valve. A 3/4" pressure matic bypass valve is provided in the in/out header. relief valve, having a capacity equal to the BTUH out- While the Unitherm Governor responds to the changes put of the model to be installed, is recommended for... -
Page 24: Plumbing-Water Connections
PLUMBING—WATER CONNECTIONS Single Pool Heater Installation Multiple Pool Heater Installation The heater requires water flow and positive pressure to fire and operate properly. It must therefore be installed downstream of the discharge side of the filter pump. A typical installation is plumbed as follows: 1. -
Page 25: Heat Exchanger Reversal Procedure
HEAT EXCHANGER REVERSAL PROCEDURE - STANDARD MODELS 1. Remove right and left side access panels (Figure 1). 2. Disconnect wires at high limit, AGS (automatic gas shut-off), and pressure switch on the in/out header (Figure 2). 3. AFT Models: Remove the thermostat temperature sensor by loosening the compression fitting nut (Figure 3). -
Page 26: Electrical Wiring
ELECTRICAL WIRING NOTE: If it is necessary to replace any of the original NOTE: Failure to ground the heater electrically wiring, use 105°C wire or its equivalent, and/or 150°C could affect the heater’s electronics. wire or its equivalent, like the original wiring. The Electronic Intermittent Ignition Device automati- MILLIVOLT MODELS cally lights the pilot and main burners upon a call for... -
Page 27: Transformer Wiring
TRANSFORMER WIRING 120 VAC WIRING For 120 VAC input power to the unit, connect the black wire to the “L1” or hot leg of the power supply. Connect the white wire to the “Ret” or neutral leg of the power supply. Attach the wire nut to the red wire. There should be no connection to the red wire for 120 VAC operation. -
Page 28: Wiring Diagram - Millivolt (Mechanical Therm.)
WIRING DIAGRAM - MILLIVOLT (MECHANICAL THERMOSTAT) - Page 29 WIRING DIAGRAM - ATMOSPHERIC...
- Page 30 WIRING DIAGRAM - LO NOx...
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Page 31: Servicing Instructions
SECTION 4 - SERVICING INSTRUCTIONS GENERAL LOCATION OF CONTROLS ATMOSPHERIC 206A-406A Drain Plug (Located in rear header) Mounted On Top Of Header HL1 - High Limit HL2 - High Limit Pressure Switch Temp Sensor/Well AFT Thermostat Circuit Board Unitherm Governor Drain Plug Roll-Out Switch... -
Page 32: Control Panel Removal
CONTROL PANEL REMOVAL CONTROL ADJUSTMENTS - MILLIVOLT MODELS The water temperature is controlled by the heater ther- 1. Remove screw from front door. Set aside door for mostat on the upper front panel of the heater. The serviceability. control center contains an On/Off switch and one ther- mostat. - Page 33 THERMOSTAT OPERATION - AFT MODELS Program button LCD Display Temp Buttons Mode Button The pool heater touchpad, located on the upper front seconds. The heater will continue to operate normally panel of the heater, allows the user to select either while in the Service Menu.
- Page 34 Program Button Fahrenheit or Celsius 1) Remove the four screws holding the control cover, Refer to step one above to access the program screen. Press the Mode button until Fahrenheit or and swing the panel down so the back side of the Celsius appears on the digital display.
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Page 35: Status And Diagnostics
NOTE: The LCD temperature display may not agree with the temperature reading of your pool or spa ther- mometer. The heater reads the water temperature at the inlet. Due to the circulation characteristics of any pool or spa, the water temperature at the inlet to the heater may differ from that observed at a given location in the pool or spa. -
Page 36: Remote Control Installation And Operation
REMOTE CONTROL INSTALLATION AND OPERATION CAUTION: Before installing remote controls to the AFT thermostat model heaters, read the following: The digital thermostat model is remote-ready in most cases. The digital liquid crystal display (LCD) shows the actual pool temperature, operating status, and service codes (See examples below). The touch pad on the con- trol panel allows you to select the desired pool or spa temperature. -
Page 37: Remote Control Wiring
REMOTE CONTROL WIRING Important Installation Notes for Remote or External Wiring Configuration • Remote wiring must be run in a separate conduit. • Remote wiring must not be run parallel to high voltage lines. • For runs of under 30 feet, remote wiring should have stranded conductors with a minimum of 22 AWG, 600V, cable twisting 1.5 to 2.5 in. -
Page 38: Time Clock/Fireman's Switch
4. Turn the heater ON. TIME CLOCK/FIREMAN’S SWITCH 5. Manually turn the pressure adjustment knob clock- To operate the heater with a time clock, connect the wise until the heater shuts off. (A flat screwdriver timer to the fireman’s switch connection in the heater’s may be necessary if knob is too tight.) wiring. -
Page 39: Pilot Safety
NOTE: An erratic high limit is often characteristic of an MAIN BURNER AND ORIFICE REMOVAL - internal heat exchanger problem, e.g. scale build-up, ATMOSPHERIC MODELS defective bypass. Refer to Troubleshooting section 1. Remove burner tray. (starting on page 43). 2. Remove screws and burner hold-down bracket. HIGH LIMIT REMOVAL NOTE: If the heat exchanger is sooted badly, the burner hold-down bracket and spacer can become dis-... -
Page 40: Heat Exchanger Removal
Extension Pieces (2) Auger with Carbide Tip Wire Brush 4. Remove heat exchanger from the heater and wash HEAT EXCHANGER REMOVAL with a garden hose, making sure soot is removed 1. Shut water, gas and electricity off, close valves from spaces between fins. and relieve pressure, then remove relief valve. -
Page 41: Unitherm Governor (U.g.) Replacement
UNITHERM GOVERNOR (U.G.) REPLACEMENT 1. Shut water, gas and electricity off, close valves Retainer Plug and relieve pressure. 2. Drain heat exchanger. U.G. 3. Remove retainer plug located next to the outlet Spring pipe connection. 4. Unsnap old U.G. to remove from retainer plug. Gasket Snap in new U.G. -
Page 42: Burner Tray Removal
LO NOx HEATERS (CONTINUED) MAIN BURNER AND ORIFICE REMOVAL 1. Remove burner tray, following above procedure. 2. Remove pilot. See pilot removal procedure. 3. Remove (8) total screws from the burner hold- down brackets, front and rear of tray. 4. Remove (8) total screws from the left and right sides of the manifold assembly. -
Page 43: Troubleshooting Mechanical
SECTION 5 - TROUBLESHOOTING MECHANICAL IMPORTANT NOTICE These instructions are intended for the use of qualified personnel who are specifically trained and experienced in the installation of this type of heating equipment and related system components. Installation and service personnel may be required by some states to be licensed. -
Page 44: Electrical - Standing Pilot Millivolt
ELECTRICAL - STANDING PILOT MILLIVOLT POOL OR SPA HEATER ELECTRICAL CHECK WITH MILLIVOLT GAS VALVE CAUTION: For qualified service personnel only. 1. Filter must be on with adequate water flow through heater. 2. Gas valve must be in "ON" position. Thermostat set higher than pool water temperature. 3. -
Page 45: Electrical - Electronic Ignition Iid
ELECTRICAL - ELECTRONIC IGNITION IID WARNING HIGH VOLTAGE For qualified technicians ONLY NOTE: Some heaters may be equipped with an ignition module that shuts off pilot gas if pilot fails to light. To reset, interrupt power to heater. START TURN GAS SUPPLY OFF. NOTE: Before troubleshooting, familiarize yourself with the start-up and check-out TURN THERMOSTAT procedure. -
Page 46: Control Logic - Flow Chart
CONTROL LOGIC - FLOW CHART Power On • Check On/Off switch (under lid on control panel) Is the water • Check for 120/240 volts to the transformer temperature displayed? (time clock, circuit breaker, wire connections) • Check for 24 volts to Circuit Board (P6 connector) “Remote”... -
Page 47: Replacement Parts
SECTION 6 - REPLACEMENT PARTS If determined defective by the Company and within NOTE: To supply you with the correct part, it is impor- warranty, a like part or equal substitution will be tant that you supply the heater model number, serial returned, freight collect. - Page 48 ATMOSPHERIC HEATERS 19-M 20-M 22-M 21-M 24-M 23-M 22-M...
- Page 49 LO NOx HEATERS 16-M 17-M 19-M 18-M 21-M 20-M 19-M...
- Page 51 ATMOSPHERIC HEATERS CALL DESCRIPTION 206A 266A 336A 406A BURNER TRAY Burner Tray w/Burners (sea level)* 010391F 010392F 010393F 010394F Burner Tray w/o Burners (sea level)* 010395F 010396F 010397F 010398F Burner Tray w/Gas Valve Nat Millivolt 010399F 010400F 010401F 010402F Burner Tray w/Gas Valve Pro Millivolt...
- Page 52 ATMOSPHERIC HEATERS...
- Page 53 ATMOSPHERIC HEATERS...
- Page 54 LO NOx HEATERS...
- Page 55 LO NOx HEATERS...
- Page 56 FLIP THIS MANUAL FOR INSTRUCTIONS IN SPANISH. www.raypak.com Raypak, Inc., 2151 Eastman Avenue, Oxnard, CA 93030 (805) 278-5300 Fax (805) 278-5468 Litho in U.S.A.
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Questions and answers
I replaced my circuit board on my 336A Rheem heater. Display works, but the set point when trying to set it goes to 65 and then counts down to 50 and stops there. I can't get it to set the temp.
@Tom Blakely the replacement board is a 100-10000345
A temperature set point issue on a Raypak 336A Rheem heater after replacing the circuit board could be caused by a faulty or incorrectly connected temperature sensor (thermistor). If the sensor is out of range, open, shorted, or not reading within 10% of expected resistance values, it can prevent accurate temperature display or adjustment. Check the thermistor, its wiring, and connector at Terminal P1. If the sensor readings are correct, the replacement circuit board itself may be faulty.
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ROL on the display
ROL on the display of a Raypak 336A means the thermal fuse inside the heater has tripped due to excessive heat or flame roll-out. This can be caused by a downdraft of the burner flame.
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The readout is CLK, also the front panel inside the heater has a 2-3" melted spot in the center of the instructions sheet. Heater won't fire up.
The CLK readout on a Raypak 336A heater means "Clock – Time Clock," indicating the heater is turned off by a programmed time control. If the heater is not connected to an automation system, the issue may be with the PCB (printed circuit board).
A melted spot on the front panel could be caused by burned wiring or damage near the ignitor. This could result from short circuits, rodent damage, or overheating components, such as a faulty igniter or high-tension lead.
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