Page 2 - pH
WATER CHEMISTRY (Corrosive water voids all warranties) For your health and the protection of your pool equipment, it is essential that yourwater be chemically balanced. The following levels must be used as a guide for bal-anced water. Recommended Level(s) Fiberglass Pools Fiberglass Spas Other Pool ...
Page 3 - CONTENTS
4 PART ONEOWNER'S OPERATING INSTRUCTIONS 4 SECTION 1START-UP PROCEDURES 4 Before Start-Up 5 Lighting Instructions & Shut-Off Procedures - Manually Lighted Pilots MV 6 Operating Instruction & Shut-Off Procedures -Automatically Lighted Pilots IID 7 After Start-Up 7 SECTION 2CAUTION 8 SECTION 3...
Page 4 - BURNERS
4 PART ONE OWNER'S OPERATING INSTRUCTIONS FOR YOUR SAFETY - READ BEFORE OPERATINGWARNING: IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR EXPLOSION MAYRESULT, CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE. SECTION 1 - START-UP PROCEDURES Your pool/spa heater has been designed f...
Page 5 - LIGHTING INSTRUCTIONS AND SHUT-OFF PROCEDURES; MILLIVOLT SYSTEM; WHAT TO DO IF YOU SMELL GAS:
5 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) A. This appliance has a pilo...
Page 6 - OPERATING INSTRUCTIONS AND SHUT-OFF PROCEDURES; ELECTRONIC IGNITION SYSTEM; GAS
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) A. This appl...
Page 7 - VISUAL INSPECTION - ATMOSPHERIC HEATERS; MAIN BURNER FLAME; WATER PRESSURE SWITCH; Should overheating occur or the gas
7 AFTER START-UP Feel the inlet and outlet pipes. Outlet pipe should beonly slightly warmer than the inlet. It should not be hot. VISUAL INSPECTION - ATMOSPHERIC HEATERS With the heater on, remove the door and make a visu-al check of the pilot and burner. The flame should beblue with a well-defined ...
Page 8 - Soot may be combustible. Wet sooted; POOL & SPA WATER CHEMISTRY; High chemical concentrates from feeders and
8 SECTION 3 - MAINTENANCE AND CARE PROCEDURES To be followed one month after start-up and then semi-annually. 1. Inspect top of heater and drafthood for soot, a sticky black substance around finned tubes and"V" baffles, and open flue gas passageways. Anyvisible soot should be cleaned for pro...
Page 9 - COLD WEATHER OPERATION; IMPORTANT FREEZE INFORMATION; Heater operation can contin-; WINTERIZING THE POOL & SPA HEATER; cal supply to the heater.
9 COLD WEATHER OPERATION IMPORTANT FREEZE INFORMATION MODERATE CLIMATE: Heater operation can contin- ue during short-term cold spells. When temperaturesare between 0° and 32°F, flow (continuous pumpoperation) must be maintained. CAUTION: Do not use the heater to maintain water temperatures just abov...
Page 10 - SECTION 1 - RECEIVING EQUIPMENT; These items are shipped inside a box in the carton with the heater:; STANDARD UNIT; Plastic pipe finish flange for gas line; LABEL ON CARTON
10 PART TWOINSTALLATION 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-t...
Page 11 - SECTION 3 - INSTALLATION INSTRUCTIONS; CALIFORNIA PROPOSITION 65 WARNING:; This product contains chemicals known to the State of California; IMPORTANT NOTICE; SECTION 2 - GENERAL SPECIFICATIONS; Ambient Temperature Rating of Heater Components; Millivolt Heater with Honeywell Gas Valve; Atmospheric heaters:
11 SECTION 3 - INSTALLATION INSTRUCTIONS CALIFORNIA PROPOSITION 65 WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. IMPORTANT NOTICE These instructions are intended only for the use of qualified personnel, specifical...
Page 12 - OUTDOOR HEATER INSTALLATION; HEATER WITH OUTDOOR STACKLESS TOP; CLEARANCES; This heater can be installed on com-; Pagoda Top
12 OUTDOOR HEATER INSTALLATION These heaters are design-certified for outdoor installation, when equipped with the approved tops designated foroutdoor use. WARNING: The heater shall not be located in an area where water sprinklers, or other devices, may cause water to spray through the cabinet louve...
Page 13 - For installations in Canada,; Forced Air Inlet; For installations in Florida
13 Heaters must not be installed under an overhang of less than three 3 ft from the top of the heater. Three sidesmust be open in the area under the overhang. Roof water drainage must be diverted away from the heatersinstalled under overhangs with the use of gutters. For U.S. installations , the poi...
Page 15 - INDOOR STACK KIT INCLUDES:; Clips; OUTDOOR STACK
15 WARNING: Indoor heaters require a drafthood that must be connected to a vent pipe and properly vented to the outside. Failure to follow this procedure can cause fire or fatal carbon monoxide poisoning. INDOOR HEATER INSTALLATION The heater is also design-certified for indoor installation when equ...
Page 17 - SPECIFICATIONS AND DIMENSIONS
17 Lo w NO x UNITS Heater Model BTUH Input (000) (A) Cabinet Width (B) Flue Dia. (C) Indoor Drafthood (J) Min. Gas Conn. WaterConn. Shipping Weights (lbs) Standard Heater w/Stackless Top ASME Heater w/Stackless Top Indoor Draft- hood R207A 199.5 20” 6” 55-5/8” 11-3/4” 3/4” 2” 174 193 12 R267A 266.0 ...
Page 18 - heater and void the warranty.; Power Vent
18 B. All Air From Outdoors: When air is supplied directly from outside of build-ing, each opening shall have a minimum net freearea as noted: COMBUSTION AND VENTILATION AIR (Indoor Units Only) The heater must have both combustion and ventilation air. Minimum requirements for net free air supply ope...
Page 19 - GAS SUPPLY CONNECTIONS; The heater and its manual shut-off valve; Do not use Teflon tape on gas line pipe thread.
19 The discharge opening must be a minimum of 2 ft ver-tically from the roof surface and at least 2 ft higher thanany part of the building within 10 ft. Vent stack shall beat least 5 ft in vertical height above the drafthood out-let. The vent cap location shall have a minimum clear-ance of 4 ft hori...
Page 20 - Maximum Equivalent Pipe Length
20 GAS PRESSURE REGULATOR The gas pressure regulator is preset at 4.0 in. WCthroughout for natural gas, and 10.5 in. WC. forpropane gas. The pressure at the gas valve, takenwith a manometer, should be about 4.0 in. WC naturalgas (3.0 in. WC for Low NOx) and 10.5 in. WCpropane gas. If an adjustment i...
Page 21 - PLUMBING FOR WATER CONNECTIONS; MODEL; POLYMER HEADERS; FLOW RATES
21 PLUMBING FOR WATER CONNECTIONS The heater requires water flow and positive pressure to fire and operate properly. It must therefore be installeddownstream 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 ...
Page 22 - NEVER install PVC directly into header; UNITHERM GOVERNOR OPERATION; Header
22 CAST IRON HEADERS (ASME MODELS) Heater must be located so that any water leaks will notdamage the structure of adjacent area. High tempera-ture 2" plastic pipe (CPVC) may be threaded directlyinto the header flanges. This is not the same as theSchedule 80 PVC pipe which is also gray. PVC may b...
Page 23 - To avoid water damage or scalding due to; PRV
23 INTERNAL AUTOMATIC BYPASS VALVE In addition to the Unitherm Governor, a built-in auto-matic bypass valve is provided in the in/out header.While the Unitherm Governor responds to the changesin water temperature in the heater, the internal bypassvalve automatically responds to changes in waterpress...
Page 24 - HEAT EXCHANGER PRESSURE DROP TABLES; FLOW
24 HEAT EXCHANGER PRESSURE DROP TABLES POLYMER HEADER (STANDARD MODELS) FLOW GPM PRESSURE DROP (FT OF HEAD) 206/207 266/267 336/337 406/407 20 1.5 2.8 4.1 4.1 30 1.7 4.6 5.8 5.8 40 2.1 5.2 6.5 6.5 50 2.4 5.6 7.2 7.2 60 2.8 6.1 7.7 7.7 70 3.7 6.5 8.2 8.2 80 4.6 7.3 8.7 8.7 90 5.7 8.8 10.2 10.2 100 6....
Page 25 - HEAT EXCHANGER REVERSAL PROCEDURE - STANDARD MODELS; For ASME Models call your factory representative.
25 HEAT EXCHANGER REVERSAL PROCEDURE - STANDARD MODELS 1. Remove right and left side access panels(Figure 1). 2. Disconnect wires at high limit, AGS (automatic gasshut-off), and pressure switch on the in/outheader (Figure 2). 3. Digital Models: Remove the thermostat tempera- ture sensor by loosening...
Page 26 - ELECTRICAL WIRING; If it is necessary to replace any of the original; MILLIVOLT MODELS; Heater must be electrically grounded and
26 ATMOSPHERIC Wiring locations LOW NOx Wiring locations ELECTRICAL WIRING NOTE: If it is necessary to replace any of the original wiring, use 105°C wire or its equivalent, and/or 150°Cwire or its equivalent, like the original wiring. MILLIVOLT MODELS The Millivolt models are equipped with a self-ge...
Page 29 - WIRING DIAGRAM - DIGITAL MODELS - ATMOSPHERIC
Page 30 - WIRING DIAGRAM - DIGITAL MODELS - LOW NOx
Page 31 - SECTION 4 - SERVICING INSTRUCTIONS; GENERAL LOCATION OF CONTROLS; Mounted On Top
31 SECTION 4 - SERVICING INSTRUCTIONS GENERAL LOCATION OF CONTROLS ATMOSPHERIC LOW NOx Digital Thermostat Circuit Board Drain Plug (Located in rear header) Unitherm Governor Mounted On Top Of Header HL1 - High LimitHL2 - High LimitPressure SwitchTemp Sensor/Well Pilot Roll-Out Switch Gas Valve Trans...
Page 32 - CONTROL ADJUSTMENTS - DIGITAL MODELS
32 CONTROL PANEL REMOVAL 1. Remove (2) screws from front door. Set aside doorfor serviceability. CONTROL ADJUSTMENTS - MILLIVOLT MODELS The water temperature is controlled by the heater ther-mostat on the upper front panel of the heater. Thecontrol center contains an On/Off switch and one ther-mosta...
Page 34 - set; Resets board to factory default settings.
34 set Resets board to factory default settings. Resets faults in the History File. Change from Fahrenheit to Celsius. SPA setpoint maximum adjustment. POOL setpoint maximum adjustment. SETdef – Default Settings Refer to step one above to access the programscreen. SETdef should appear on the screen....
Page 36 - REMOTE CONTROL INSTALLATION AND OPERATION; REMOTE OPERATION; Electrostatic Discharge (ESD) damage can be caused by; REMoFF; or; REM
36 REMOTE CONTROL INSTALLATION AND OPERATION CAUTION: Before installing remote controls to the digital thermostat model heaters read the following: The digital thermostat model is remote-ready in most cases. The digital liquid crystal display (LCD) shows theactual pool temperature, operating status,...
Page 37 - P8 Connector
37 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 minim...
Page 38 - WATER PRESSURE SWITCH ADJUSTMENT; FLAME ROLL-OUT SAFETY SWITCH; An erratic high limit is often characteristic of an; PILOT SAFETY - Millivolt Models
38 WATER PRESSURE SWITCH The water pressure switch, or heater actuator, ensuresthat the heater operates only when the filter pump is inoperation. It is located on the inlet/outlet header. It isfactory set at 1.75 PSI for deck-level installations.When the heater is located below the level of the spao...
Page 39 - HONEYWELL MILLIVOLT
39 PILOT REMOVAL AND CLEANING 1. Disconnect pilot tubing and wires from gas valve.2. Remove pilot assembly from burner tray.3. Remove pilot from bracket.4. Remove pilot orifice and air opening (Honeywell MV unit only), and clean with wire or small brush. CAUTION! Do not enlarge hole in pilot orifice...
Page 40 - In extreme cases it may be necessary to do; DO NOT WIRE; Auger with Carbide Tip Wire Brush; SOOT IS COMBUSTIBLE. EXERCISE; IMMERSION WELL REPLACEMENT; Well Assembly
40 TUBE CLEANING PROCEDURE Establish a regular inspection schedule, the frequencydepending on the local water conditions and the sever-ity of service. Do not let the tubes clog up solidly.Clean out deposits over 1/16" in thickness. The heater may be cleaned from the return headerside, without br...
Page 41 - Door must be in place for proper operation.
41 The Low NOx pool heaters are certified and testedunder the ANSI Z21.56/CSA 4.7 Standard for Gas-Fired Pool Heaters. The heater should be installed to meet all local codes,and the latest editions of the National Fuel Gas CodeZ223.1 and the National Electrical Code, ANSI/NFPA70. OPERATION On call f...
Page 43 - MECHANICAL; SECTION 5 - TROUBLESHOOTING
43 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 somestates to be l...
Page 44 - For qualified service personnel only.
44 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 temp...
Page 45 - START; ELECTRICAL - ELECTRONIC IGNITION IID; For qualified technicians ONLY
45 START TURN GAS SUPPLY OFF. TURN THERMOSTAT (CONTROLLER) TO CALL FOR HEAT POWER TO PC BOARD? (24 V NOMINAL) YES SPARK ACROSS IGNITER/SENSOR GAP? YES TURN GAS SUPPLY ON PILOT BURNER LIGHTS? YES MAIN BURNER LIGHTS? YES SYSTEM RUNS UNTIL CALL FOR HEAT ENDS? YES CALL FOR HEAT ENDS SYSTEM SHUTS OFF? YE...
Page 46 - up to 2; YES; DIGITAL CONTROL LOGIC - FLOW CHART
46 Power On Is the water temperature displayed? NO YES Push MODE switch to select " Pool " or " SPA " Push Temp arrow to scroll to desired temperature NO Water temperature and set temperature displayed? YES CFH (call for heat) will display briefly SPK (spark) will display until pilot...
Page 47 - SECTION 6 - REPLACEMENT PARTS; To supply you with the correct part, it is impor-
47 SECTION 6 - REPLACEMENT PARTS NOTE: To supply you with the correct part, it is impor- tant that you supply the heater model number, serialnumber and type of gas when applicable. Any part returned for replacement under standardcompany warranties must be properly tagged with areturn parts tag, comp...
Page 48 - ATMOSPHERIC HEATERS
48 10-M 14-M 9-M 9-M 5-C 4-C 11-S 4-S 5-S 3-B 4-B 5-B 1-B 6-S 7-S 4-S 2-R 1-R 1-J 16-M 3-R 2-V 4-V 1-V 3-V 1-S 13-S 2-S 12-S 4-HP 5-HP 7-HP 6-HP 6-HP 3-HP 12-HM 17-HM 14-M 8-S 2-J 2-B 1-G 4-M 2-M 5-M 12-M 11-M 13-M 3-S 10-S 16-M ATMOSPHERIC HEATERS
Page 49 - LOW NOx HEATERS
49 8-S 3-S 11-S 4-S 6-S 7-S 4-S 5-S 1-R 1-J 2-S 3-R 9-M 1-V 2-V 3-V 1-S 2-S 12-S 13-S 9-M 17-HM 12-HM 4-HP 3-HP 6-HP 5-HP 7-HP 6-HP 2-J 1-G 4-B 3-B 6-B 5-B 1-B 10-S 3-J 2-B 2-M 10-M 4-C 6-C 6-M 8-M 7-M 7-B 12-M 13-M 12-M 4-V LOW NOx HEATERS
Page 51 - High Limit 140o - Black Epoxy
51 CALL OUT DESCRIPTION 206A 266A 336A 406A B BURNER TRAY 1-B 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 Mill...
