INSTALLATION & OPERATING INSTRUCTIONS Gas-Fired Pool & Spa Heater Atmospheric Models 206A, 266A, 336A & 406A Lo NOx Models 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. 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.
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 balanced water. Recommended Level(s) Water Temp. (Deg. F) pH Total Alkalinity (PPM) Calcium Hardness (PPM) Salt (PPM) Free Chlorine (PPM)* Fiberglass Pools Fiberglass Spas Other Pool & Spa Types 7.3 to 7.4 7.3 to 7.4 7.6 to 7.
4 4 4 5 6 7 7 8 8 8 9 9 10 10 11 11 11 12 12 14 15 15 16 17 18 18 19 20 20 20 21 21 22 22 22 23 23 23 23 24 25 26 26 26 27 28 29 CONTENTS PART ONE OWNER'S OPERATING INSTRUCTIONS SECTION 1 START-UP PROCEDURES Before Start-Up Lighting Instructions & Shut-Off Procedures Manually Lighted Pilots MV Operating Instruction & Shut-Off Procedures Automatically Lighted Pilots IID After Start-Up SECTION 2 CAUTION SECTION 3 MAINTENANCE & CARE PROCEDURES Pool & Spa Water Chemistry Automatic Chlorinators & Chemi
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. It is available with millivolt or electronic ignition. ASME-certified units, typically used in commercial applications, are also available.
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 A. B. (MANUALLY LIGHTED PILOT) *If you cannot reach your gas supplier, call the fire department. This appliance has a pilot that must be lit by hand. When lighting the pilot, follow these instructions exactly. C.
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) A. This appliance is equipped with an ignition device which automatically lights the pilot. Do not try to light the pilot by hand. B. 1. 2. 3. 4. WHAT TO DO IF YOU SMELL GAS: *Do not try to light any appliance.
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. VISUAL INSPECTION - ATMOSPHERIC HEATERS With the heater on, remove the door and make a visual check of the pilot and burner. The flame should be blue with a well-defined pattern.
SECTION 3 - MAINTENANCE AND CARE PROCEDURES 2. Your pump strainer basket may be full. remove debris. If so 3. Your filter may be dirty. If so, backwash or clean filter. (To tell if your filter is dirty, look to see if the filter pressure will be higher than usual). WARNING: Check the heater for possible rodent nests after long periods of non-use. To be followed one month after start-up and then semiannually. 4. The pump may have lost its prime and be running dry. Check the pressure on the filter.
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 continue during short-term cold spells. When temperatures are between 0° and 32°F, flow (continuous pump operation) must be maintained. 1. Turn off gas valve, manual gas valve, and electrical supply to the heater. 2.
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 representative. On receipt of your equipment it is suggested that you visually check for external damage to the carton. If the carton is damaged, a note should be made on the Bill of Lading when signing for the equipment.
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. Millivolt heaters contain a self-generating electrical system operating between .25 and .75 VAC.
CLEARANCES ALL HEATERS For clearances from combustible surfaces, see the chart below. When installed according to the listed minimum clearances from combustible construction, the pool heater can still be serviced without removing permanent construction around the heater. CLEARANCE FROM COMBUSTIBLE CONSTRUCTION However for ease of servicing, we recommend a clearance of at least 24” in the front, and at least 18" on the water connection side.
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. For U.S. installations, the point from where the flue products exit the heater must be a minimum of 4 ft below, 4 ft horizontally from, or 1 ft above any door, window or gravity inlet into any building.
FLORIDA AND TEXAS BUILDING CODES WIND SPEED = 150 MPH, 3 SECOND GUST EXPOSURE = C MODEL # B 206 20” 336 26” 266 406 206/266/336/406 Atmospheric B 23” 29” 40” 28” 2” x 6” x 1/8” Pallet Anchor Bracket (4 Total) (Kit# 011636) 3” Min. Conc. Pad by others 1/4” x 1-3/4” S.S. Tapcon Bolt & Washer (Field Supplied) NOTE: Use hole closest to unit with washer overlapping edge of unit. Min. Edge Distance 6” Min. Edge Distance HOT 6” (1)–1/4” x 1-3/4” S.S. Tapcon Bolt & Washer (Field Supplied) Ea.
INDOOR HEATER INSTALLATION The heater is also design-certified for indoor installation when equipped with the approved drafthood. For Canada, indoor installation is restricted to an enclosure that is not occupied and does not directly communicate with an occupied area. Refer to the latest edition of CAN/CSA-B149 for specific requirements. Locate heater as close as is practical to a chimney or gas vent. Heater must always be vented to the outside. See Vent Piping section (pg. 18-19) for details.
SPECIFICATIONS AND DIMENSIONS ATMOSPHERIC UNITS Amp Draw B 120 Volt 240 Volt AFT 4 2 CL FLUE 10" D J * 8-7/8" 4-3/8" (6-5/8" ASME) (3-3/8" ASME) C INDOOR DRAFTHOOD 38" 32-11/16" 40" ELECTRICAL CONNECTION STACKLESS OUTDOOR TOP 26-5/8" (28-5/8" ASME) 13-1/4" GAS CONNECTION A 28" Residential, Copper Heat Exchanger Heater Model P-R206A-EN-C P-R266A-EN-C P-R366A-EN-C P-R406A-EN-C BTUH Input (000) 199.5 266.0 332.5 399.0 (A) Cabinet (B) Flue (C ) Indoor Dia.
SPECIFICATIONS AND DIMENSIONS LO NOx UNITS Amp Draw 120 Volt 240 Volt B 6 3 CL FLUE 10" D C 8-7/8” J* INDOOR DRAFTHOOD (6-5/8” ASME) 4-3/8” (3-3/8” ASME) 34” 26-1/2” STACKLESS OUTDOOR TOP ELECTRICAL CONNECTION 31-13/16" 20-1/2" (22-1/2" ASME) 7-3/4" GAS CONNECTION 28” A Shipping Weights (lbs) Heater Model BTUH Input (000) (A) Cabinet Width (B) Flue Dia. (C) Indoor Drafthood R267A 266.0 23” 7” 56” R207A R337A R407A 199.5 332.5 399.0 20” 26” 29” 6” 8” 9” (D) (J) Min.
COMBUSTION AND VENTILATION AIR (Indoor Units Only) The heater must have both combustion and ventilation air. Minimum requirements for net free air supply openings are one opening that is 12 inches from the ceiling for ventilation, and one opening that is 12 inches from the floor for combustion air as outlined in the latest edition of the National Fuel Gas Code, ANSI Z223.1(CanadaCAN/CSA-B149) and any local codes that may have jurisdiction. A.
For protection against rain or blockage by snow, the vent pipe must terminate with a vent cap which complies with the local codes or, in the absence of such codes, to the latest edition of the National Fuel Gas Code, ANSI Z223.1 (Canada - CAN/CSA-B149). GAS SUPPLY CONNECTIONS The discharge opening must be a minimum of 2 ft vertically from the roof surface and at least 2 ft higher than any part of the building within 10 ft. Vent stack shall be at least 5 ft in vertical height above the drafthood outlet.
GAS PRESSURE REGULATOR 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. WC natural gas (3.1 in. WC for Lo NOx) and 10.5 in. WC propane gas. If an adjustment is needed, remove seal and turn adjustment screw clockwise to increase presto decrease pressure.
FLOW RATES 206/207 MODEL 1-1/4”–1-1/2” - 2” PIPE SIZE MIN. GPM MAX. GPM* 406/407 1-1/4”–1-1/2” - 2” 40 125 266/267 336/337 1-1/4”–1-1/2” - 2” 1-1/4”–1-1/2” - 2” 20 25 35 *When flow rates exceed maximum GPM an external auxiliary bypass valve is required. See external bypass valve section for details.
required, use a silicon base such as AquaLube etc. POLYMER HEADERS (STANDARD MODELS) Before attaching the 2-inch unions to the inlet/outlet header, make sure the O-rings are properly seated in the grooves. Use AquaLube or equivalent non-petroleum-based lubricant on the O-ring. Hand tighten the unions. Glue PVC piping directly to the unions. INLET/OUTLET HEADER - POLYMER O-Ring Header Flange (CPVC) Header Flange Nut (CPVC) There are two sets of flange gaskets supplied with your heater.
PRESSURE RELIEF VALVE INSTALLATION INTERNAL AUTOMATIC BYPASS VALVE To conform to local building codes, it may be necessary to install a pressure relief valve. A 3/4" pressure relief valve, having a capacity equal to the BTUH output of the model to be installed, is recommended for this heater. The maximum acceptable pressure relief valve setting is 125 psi. In addition to the Unitherm Governor, a built-in automatic bypass valve is provided in the in/out header.
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. The inlet side of the filter is plumbed directly to the discharge side of the filter pump; 2. The outlet side of the filter is then plumbed to the inlet of the heater; and 3.
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). Re-route the sensor to the left side of the heater. 4. Millivolt Models: Remove the temperature sensor bulb and retainer clip from the sensor well (Figure 4).
ELECTRICAL WIRING CAUTION: Heater must be electrically grounded and bonded. Bonding lug is provided loose with the heater. Install bonding lug on lower right or left side of jacket as necessary for bonding the heater. Mounting hole is provided on the jacket. NOTE: If it is necessary to replace any of the original wiring, use 105°C wire or its equivalent, and/or 150°C wire or its equivalent, like the original 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. For Lo NOx pool heaters attach a wire nut to each red wire independently.
WIRING DIAGRAM - MILLIVOLT (MECHANICAL THERMOSTAT) 28
WIRING DIAGRAM - ATMOSPHERIC 29
WIRING DIAGRAM - LO NOx 30
SECTION 4 - SERVICING INSTRUCTIONS GENERAL LOCATION OF CONTROLS ATMOSPHERIC 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 Transformer Gas Valve Pilot LO NOx Drain Plug (Located in rear header) AFT Thermostat Circuit Board Blower Hose Blower Draw Plug Mounted On Top Of Header HL1 - High Limit HL2 - High Limit Pressure Switch Temp Sensor/Well
CONTROL PANEL REMOVAL CONTROL ADJUSTMENTS - MILLIVOLT MODELS The water temperature is controlled by the heater thermostat on the upper front panel of the heater. The control center contains an On/Off switch and one thermostat. 1. Remove screw from front door. Set aside door for serviceability. The thermostat is fitted with a means of limiting the upper temperature limit below the maximum level.
THERMOSTAT OPERATION - ADVANCED FLAME TECHNOLOGY (AFT) BOARD LCD Display Temp Buttons Program button Mode Button The pool heater touchpad, located on the upper front panel of the heater, allows the user to select either POOL or SPA operation, and to adjust the setpoint temperature. The LCD display window indicates the mode (OFF, SPA, POOL) and the actual water temperature. A manual power switch provided below the touchpad turns the control power ON or OFF.
Fahrenheit or Celsius Refer to step one above to access the program screen. Press the Mode button until Fahrenheit or Celsius appears on the digital display. The digital display is capable of displaying Celsius as well as Fahrenheit temperatures. The UP or DOWN buttons will select Fahrenheit or Celsius on the temperature display. Choose the desired temperature scale.
NOTE: The LCD temperature display may not agree with the temperature reading of your pool or spa thermometer. 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. STATUS AND DIAGNOSTICS The digital thermostat models are programmed to display a variety of status and diagnostic messages, depending on the operating conditions.
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 control panel allows you to select the desired pool or spa temperature.
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. lay and jacketed. • For runs over 30 feet, the conductors should be a minimum of 20 AWG, 600V, cable twisting 1.5 to 2.5 inch lay that is shielded and jacketed.
4. Turn the heater ON. 5. Manually turn the pressure adjustment knob clockwise until the heater shuts off. (A flat screwdriver may be necessary if knob is too tight.) 6. Slowly turn the adjustment knob counter-clockwise until the heater calls for heat again. 7. Turn an additional 1/2 turn counter-clockwise. 8. While the heater is running, check the adjustment by turning the pump off and on several times. The burners should shut off immediately when the pump is turned off.
NOTE: An erratic high limit is often characteristic of an internal heat exchanger problem, e.g. scale build-up, defective bypass. Refer to Troubleshooting section (starting on page 43). MAIN BURNER AND ORIFICE REMOVAL ATMOSPHERIC MODELS 1. Remove burner tray. 2. Remove screws and burner hold-down bracket.
Extension Pieces (2) HEAT EXCHANGER REMOVAL 1. Shut water, gas and electricity off, close valves and relieve pressure, then remove relief valve. Remove side inspection panels. 2. Remove top jacket holding screws. 3. Remove rear top panel. 4. Remove screws mounting the rain shield to the rear panel. Also remove the screws that mount the rain shield to the sway brace. Remove rain shield. 5. Remove the four (4) screws holding down the flue collector. Remove the flue collector. 6.
UNITHERM GOVERNOR (U.G.) REPLACEMENT 1. Shut water, gas and electricity off, close valves and relieve pressure. 2. Drain heat exchanger. 3. Remove retainer plug located next to the outlet pipe connection. 4. Unsnap old U.G. to remove from retainer plug. Snap in new U.G. 5. Reinstall retainer plug, taking care to lubricate gasket with a non-petroleum based grease such as AquaLube. Retainer Plug Spring U.G.
LO NOx HEATERS (CONTINUED) BAFFLE MOUNTED INLET SIDE 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 holddown brackets, front and rear of tray. 4. Remove (8) total screws from the left and right sides of the manifold assembly. Detach the air/gas manifold assembly from the burner tray assembly. 5. Remove burners by raising them straight up off the rear end slots. 6.
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. Persons not qualified shall not attempt to install this equipment nor attempt repairs according to these instructions. PROBLEM CAUSE Harmonics, or whining noise U.G.
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. Jumpers are for temporary check only. If left in place, they could cause the heater to burn up.
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. TURN THERMOSTAT (CONTROLLER) TO CALL FOR HEAT POWER TO PC BOARD? (24 V NOMINAL) YES NOTE: Before troubleshooting, familiarize yourself with the start-up and check-out procedure.
CONTROL LOGIC - FLOW CHART Power On Is the water temperature displayed? NO YES “Remote” and Water Temperature displayed (a remote control is controlling the heater) Push MODE switch to select "Pool" or "Spa" Note: Disconnect the remote by turning the remote function off. See page 36 for instructions.
SECTION 6 - REPLACEMENT PARTS If determined defective by the Company and within warranty, a like part or equal substitution will be returned, freight collect. Credit will not be issued. NOTE: To supply you with the correct part, it is important that you supply the heater model number, serial number and type of gas when applicable.
3-V ATMOSPHERIC HEATERS I-S 14-M I3-S 4-V 1-V 2-S 6-HP 2-V 5-HP 7-HP I5-HP 3-HP 8-C 6-HP 4-HP 7-HP 3-R 14-M 6-S 4-S 8-S 10-M 3-M 9-M 11-S 5-C 7-C 7-S 17-HM 4-C 2-R 2-M 4-M 13-M 3-S 11-M 2-B 2-J 12-M 5-M 1-G 1-R 16-M 5-S 16-M 10-S 5-B 1-B 48 4-B 3-B 1-J 4-S I2-S
LO NOx HEATERS 3-V I-S 9-M I3-S 4-V 1-V 2-S 2-V 6-HP 5-HP 7-HP I5-HP 3-HP 6-HP 8-C 3-R 9-M 4-HP I2-S 6-S 4-S 17-HM 11-S 7-S 8-S 5-C 2-J 4-C 6-M 3-J 2-R 4-S 7-M 2-M 8-M 3-B 1-G 3-S 2-B 4-B 1-R 12-M 7-C 13-M 10-M 5-B 1-B 10-S 6-B 49 12-M 5-S 1-J
13-HM 1-M 19-HM 6-HM 5-HM 3-M (OPTIONAL) 6-C 14-HM 2-S 16-HM 9-S 15-HM 2-HM 3-C 7-HM 2-C 12-HM 4-HM 10-HM 4-S 3-HM 18-HM 17-HM 9-HM 8-HM 11-HM 2-P 7-P 9-P HONEYWELL IID ATMOSPHERIC PILOT POLYMER IN/OUT HEADER AND ACCESSORIES 1-P 1-P 5-P 8-P 2-P 6-P 6-P 3-P 4-P 9-P HONEYWELL MILLIVOLT PILOT IID LO NOx PILOT 50
ATMOSPHERIC HEATERS CALL OUT B 1-B 2-B 3-B 4-B 5-B C 1-C 2-C 3-C 4-C 7-C 8-C 5-C 6-C 1-G 1-HP G HP 2-HP 3-HP 4-HP 5-HP 6-HP 7-HP 8-HP 9-HP 10-HP 11-HP 12-HP 13-HP 14-HP 15-HP 16-HP 17-HP 18-HP 19-HP DESCRIPTION BURNER TRAY Burner Tray w/Burners (sea level)* Burner Tray w/o Burners (sea level)* Burner Tray w/Gas Valve Nat Millivolt Burner Tray w/Gas Valve Pro Millivolt Burner Tray w/Gas Valve Nat IID Burner Tray w/Gas Valve Pro IID Burner Spacer/Hold Down Kit Burner Burner Orifice Natural Gas Bur
ATMOSPHERIC HEATERS CALL OUT HM 1-HM 2-HM 15-HM 16-HM 3-HM 4-HM 5-HM 6-HM 7-HM 8-HM 9-HM 18-HM 10-HM 11-HM 12-HM 13-HM 14-HM 17-HM 19-HM J 1-J 2-J M 1-M 2-M 3-M 4-M 5-M 6-M 7-M 8-M 9-M 10-M 11-M 12-M 13-M 14-M 15-M 16-M 17-M 1-P P 2-P 3-P Pilot Nat & Pro IID 4-P 5-P 6-P 7-P 8-P 9-P 10-P 11-P 1-R 2-R 3-R DESCRIPTION HEAT EXCHANGER - METAL Heat Exchange Assy.Copper ASME CI Heat Exchange Assy.
ATMOSPHERIC HEATERS 1-S 2-S CALL OUT S 3-S 4-S 5-S 6-S 7-S 8-S 9-S 10-S 11-S 12-S 13-S 1-V 2-V 4-V 3-V V DESCRIPTION SHEETMETAL Jacket Top (Louvered) Flue Collector (Units with Polymer Header) Flue Collector (Units with Metal Header) Door Assy Raypak Green Cool Dark & Warm Dark Gray Rheem Green Cool Dark & Warm Dark Gray Ruud Green Warm Dark Gray (Units manufactured prior to 9/2012) Cool Dark & Warm Dark Gray (Units mfd after to 9/2012) Access Panel Set (3 Pcs Units with Polymer Header) Access Panel
LO NOx HEATERS CALL OUT BB DESCRIPTION 207A 267A 337A BURNER TRAY*** 1-B Burner Tray w/Burners (0-5000) 010343F 010344F 010345F Burner Tray w/o Burner (0-5000) 010084F 010085F 010086F 2-B Burner Hold Down Kit 010254F 010255F 010256F 3-B Burner 310732/3 310732/4 310732/5 4-B Burner Orifice Nat. #26 (0-5000)* 351632/3 351632/4 351632/5 Burner Orifice Nat. #31 (above 5000 ft.
LO NOx HEATERS CALL OUT J 1-J 2-J 3-J 1-M M 2-M 3-M 4-M 5-M 6-M 7-M 8-M 9-M 10-M 11-M 12-M 13-M 14-M P 1-P 2-P 3-P 4-P 5-P 6-P R 1-R 2-R 3-R S 1-S 2-S 3-S 4-S 5-S 6-S 7-S 8-S 9-S 10-S 11-S 12-S 13-S 1-V 2-V 4-V 3-V V DESCRIPTION CONTROL BOX Transformer 120/240/24V Rocker Switch Relay Low Nox MISCELLANEOUS COMPONENTS Pressure Switch 1.75 PSI Pressure Switch 11 PSI Special-See Water Pressure Switch Adj.
www.raypak.com Raypak, Inc., 2151 Eastman Avenue, Oxnard, CA 93030 (805) 278-5300 Fax (805) 278-5468 Litho in U.S.A.
