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ETi 250® HIGH EFFICIENCY POOL HEATER
INSTALLATION AND USER'S GUIDE
If you do not follow these instructions exactly, a fire or explosion may result, causing property damage, personal
injury or loss of life. For additional free copies of this manual; call USA (800) 831-7133
FOR YOUR SAFETY - This product must be installed and serviced by authorized personnel, qualified
in pool/spa heater installation. Improper installation and/or operation can create carbon monoxide gas,
fire or explosion, and flue gases which can cause serious injury, property damage, or death. For indoor
installations, as an additional measure of safety, Pentair strongly recommends installation of suitable
Carbon Monoxide detectors in the vicinity of this appliance and in any adjacent occupied spaces.
Improper installation and/or operation will void the warranty.
Improper installation, adjustment, alteration, service or
maintenance can cause property damage, personal injury
or death. Installation and service must be performed by
a qualified installer, service agency or the gas supplier.
120 / 240 VAC NATURAL GAS / PROPANE GAS
Model
ETi 250 NA - ASME
FOR
YOUR
SAFETY
1620 Hawkins Ave., Sanford, NC 27330
10951 W. Los Angeles Ave., Moorpark, CA 93021
FOR YOUR SAFETY - READ BEFORE OPERATING
Natural
461112
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.
DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of
this or other appliances.
Pentair Water Pool and Spa, Inc.
(800) 831-7133 or (919) 566-8000
•
(800) 831-7133 or (805) 553-5000
•
OWNER:
Retain For
Future
Reference
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Table of Contents
Troubleshooting
Related Manuals for Pentair ETi 250
Summary of Contents for Pentair ETi 250
- Page 1 For indoor installations, as an additional measure of safety, Pentair strongly recommends installation of suitable Carbon Monoxide detectors in the vicinity of this appliance and in any adjacent occupied spaces.
- Page 2 Customer Service and Technical Support Customer Service and Technical Support Phone: (800) 831-7133 Fax: (800) 284-4151 (USA - 8 AM to 7:30 PM) www.pentair.com P/N 476361 Revision A. 2/2022 ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide...
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Page 3: Warning And Safety Information
ETi 250 High Efficiency heater. Its use will reduce service calls and chance of injury and will lengthen product life. History and experience has shown that most heater damage is caused by improper installation practices. -
Page 4: Consumer Information And Safety Information
7. Install battery-operated carbon monoxide alarms. The alarms should be certified to the requirements of the most recent UL, IAS, CSA and IAPMO standard for carbon monoxide alarms. Test carbon monoxide alarms regularly and replace dead batteries. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... - Page 5 • Pentair strongly recommends that all vents, pipes and exhaust systems be initially and periodically tested for proper operation. This testing can be accomplished by using a hand-held carbon monoxide meter and/or by consulting with a gas professional.
- Page 6 Do not attempt to alter the rated input or type of gas by changing the orifice. If it is necessary to convert to a different type of gas, consult your Pentair dealer. Serious malfunction of the burner can occur which may result in loss of life.
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Page 7: General Specifications
The Combination Gas Control Valve on this heater differs from most appliance gas controls which has a set point of 1.4 in wc, and is different than other Pentair heaters. If it must be replaced, for safety reasons replace it only with an identical gas control valve model. Ne sure the part number is the same. -
Page 8: Table Of Contents
Air Supply Requirements Guide for the ETi 250 Heater ................Direct Air Intake Exhaust Duct using 4-inch PVC Pipe (Indoor Installation) ..........Direct Air Intake Kit Installation (Combustion Air Supply) ................Corrosive Vapors and Possible Causes ......................ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... - Page 9 Heat Exchanger Assembly Replacement Parts ................70/71 Heater Manifold Assembly - Inlet and Outlet Assembly Replacement Parts ........Heater Condensate and Exhaust Assembly Replacement Parts ............Heater Operator Control Panel Assembly Replacement Parts ............ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide...
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Page 10: Operation Instructions
Press POOL/SPA to select either Pool or Spa. The display shows the current set point and water temperature. Press Up/Down to increase or decrease water set point temperature. If the current water temperature is below the Set point water temperature, the heater will begin heating. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 11: Menu
When the BYPASS VALVE feature is disabled, there is no automatic switching of the by-pass valve when the heater starts a heating cycle. The valve stays in the position and water always flows through the heater. LANGUAGE: English, Spanish or French ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 12: Heater Dsi Electronic Ignition Lighting/Operation
RNC TIME menu. Alternately you can turn the heater off and then press and hold the Heater Off button for 5 seconds to reset the timer. Note: If the counter is reset back to 1000 and the cartridge is not replaced, the heater still can be used for normal operations. However, Pentair recommends regular maintenance and replacement. -
Page 13: Start-Up Operation / Before You Start
OPERATING INSTRUCTIONS on page 14. Damage to equipment caused by improper installation or repair will void the warranty. When operating for the first time or after an extended shut-down, run filter pump for several minutes to clear all air from the system. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 14: Heater Operating Instructions
2. Switch off all electric power to the unit. 3. Remove the access door panels. 4. Toggle-Style Valve: Pull toggle toward you to turn gas off, see Figure 2. 5. Replace the Access Door Panels. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 15: Safety Controls (Air Flow Switch, Water Pressure Switch, High Limit Shut-Off Switch)
There is one Air Flow Switch (AFS) with a control set point of 0.5”WC. This set point is not the same as other Pentair pool heaters, (see Figure 3). The AFS is designed as a safety device to ensure the combustion air blower is operating and is monitoring the differential (negative) pressure within the blower housing. -
Page 16: (Stack Flue Sensor (Sfs), Thermal Fuse, Float Switch) Ignition Module Operation / Flame Current Check Point / Diagnostic Leds
Displays Message on Automation System and viewed on Heater menu GOOD FLAME Displays Message on Automation System and viewed on Heater menu Diagnostic Indicator Ignition Control Module (ICM) Figure 6. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 17: Installation
2-in (5.08 cm) PVC slip unions provided with the heater. The outer manifold remains cool; no heat sinks are required. The heater operator control panel is located on the side of the heater. For ETi 250 Heater replacement parts, see page 66. -
Page 18: Sequence Of Operation
11 and 12 for Outdoor and Indoor installations, dimensions and orientation of the heater. 25.0 (635) Dimensions in Inches (Millimeters) 25.0 (635) 436.29 17.2 268.35 10.6 182.47 512.58 20.2 Figure 10. Heater Top View. 31.00 (788.95) ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 19: Specifications
2 in WATER INLET CONNECTIONS Figure 11. 29.25 99.06 Heater Front View 11.4 ELECTRICAL 34.7 31.8 401.79 15.8 10.1 BONDING LUG Heater Rear View Heater Plumbing Side 39.41 Figure 12. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 20: Plumbing Connections
The heater has the unique capability of direct schedule 40 PVC plumbing connections. A set of bulkhead fittings is included with the heater to ensure conformity which is the recommended PVC plumbing procedure by Pentair. Other plumbing connections can be used. See Figure 13 for plumbing connections. -
Page 21: Multiple Heater Connections
12 inches (305 mm) past the (305 mm) past the end of the heater inlet. end of the heater inlet. Firgue 16. Four ETi 250 Heaters Plumbing Hydraulic Diagram ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 22: Valves
IntelliValve actuator is installed at the heater inlet. A check valve is installed at the heater oulet so that water cannot flow back into the heater. See instructions for Automatic Bypass valve kit (P/N 462048) for setting the open and closed position of the IntelliValve. Figure 18. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 23: Below Pool Installation
NOTE: A manual main shut-off valve must be installed externally to the heater. WARNING DO NOT INSTALL THE GAS LINE UNION INSIDE THE HEATER CABINET. THIS WILL VOID YOUR WARRANTY. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 24: Gas Pipe Sizing / Gas Pipe Escutcheon
Flange installed on the gas pipe. Be sure the flange covers the circular opening in the heater panel. Gas Pipe Round knock-out Gas Pipe Escutcheon Installation Figure 19. removed from panel ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 25: Gas Pressure Testing
Special safety and precautions for Propane gas: If proper ventilation is not provided gas can collect or pool in enclosed areas, because Propane gas is heavier than air. Pentair does not recommend installing the heater in an enclosed areas, such as a ground pit. If the heater is required to be installed in an enclosed area, be sure proper ventilation for Propane gas are met and locate the heater a safe distance from Propane gas cylinders and filling equipment. -
Page 26: Sediment Traps
® the ETi 250 heater gas valve is used in any other Pentair pool heater, it can create a risk of fire and/or excess of carbon monoxide, which can cause damage to the heaters, property damage, personal injury, (including brain damage), or death. -
Page 27: Outdoor Installation (Us And Canada)
Building Building 6 in Petroleum Gases, CAN/CSA B149.2 (latest edition) or ANSI/NFPA 58 (latest edition). Consult local codes and fire protection authorities about specific installation restrictions. Figure 21. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... - Page 28 OR COMBUSTIBLE SURFACE 1/4 in x 2-1/4 in SUPPLIED SS concrete screw WITH HEATER and SS fender washer 3-1/2 IN THICK (MIN) CONCRETE PAD Figure 23. Figure 22. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide...
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Page 29: Outdoor Installation Venting Guidelines
Massachusetts, by order of the Massachusetts State Fire Marshal. For more information, call the Massachusetts State Fire Marshal’s office. 3 ft (1 m) or more Figure 24. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 30: Indoor Venting - General Requirements (Category Iv Vertical And Horizontal Requirements)
Remove the outside air intake cover for outdoor shelter installation or Indoor Installation. 6 in (15 cm) Air intake cover 6 in (15 cm) Inlet / outlet plumbing 6 in (15 cm) Figure 25. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 31: Combustion Air Supply
Note: For indoor installations where combustion air might be insufficient, see Direct Air Intake Duct with 4 in PVC Pipe (Indoor Installation) on page 32 and 33. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 32: Direct Air Intake Exhaust Duct Using 4-Inch Pvc Pipe (Indoor Installation)
Direct Air Intake kit 4-IN CPVC FLUE Flue Exhaust Side (P/N 476371) EXHAUST SOCKET Wall Vent Cap (INDOOR OPTIONAL KIT) provided with heater Figure 26. Heater Rear View ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 33: Direct Air Intake Kit Installation (Combustion Air Supply)
Step 4 Remove air intake cover long 3” Side panel diameter latch lock pipe Step 3 45° elbow Short 3” diameter pipe. Air Orifice Figure 27. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 34: Corrosive Vapors And Possible Causes
Refrigerants, acids, glues and cements, construction adhesives. finishing and processing plants Dry cleaning and Bleaches, detergents, or laundry soaps containing chlorine. Waxes and cleaners laundry areas containing chlorine, calcium or sodium chloride. Table 5. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 35: Installation (Continued)
® The ETi 250 heater requires a 4 in special gas approved Category IV vent pipe and is a forced-draft pool and spa heater which uses positive pressure to push flue gases through the vent pipe to the outside. Flue gases under positive pressure may escape into the dwelling with any cracks or loose joints in the vent pipe, or improper vent installation. -
Page 36: Direct Vent Requirements
Forced Air walkways finished grade Inlet 3' Minimum clearance if (whichever is horizontal distance to higher) exhaust opening is less than 10 feet. Figure 28. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 37: Direct Vent Indoor Installation (Us And Canada) Horizontal Through-The-Wall (Termination)
Slope at least 1/4" per foot Condensate (2 cm per Meter) 3" (7.6 cm) Min., drain w/Trap down towards 12" (30.5 cm) Max. (Optional) condensate drain Clearance Figure 29. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... - Page 38 Direct Air Intake kit 4-IN CPVC FLUE Flue Exhaust Side (P/N 476371) EXHAUST SOCKET Wall Vent Cap (INDOOR OPTIONAL KIT) provided with heater Figure 30. Heater Rear View ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide...
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Page 39: Garage Or Utility Room Installation (Vent Installation - Indoor Installation Us And Canada)
Installation of the anchor clamps are recommended in all installations and are required in Florida, (See Florida Building Code 301.13). For hurricane mounting bolts and clamps, purchase Bolt Down Kit P/N 476004. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 40: Condensate Management (Maintenance, Condensate Neutralizer Cartridge Drain/Tubing Installation)
250 Heater is a condensing appliance. The flue gases will produce condensate while in operation and ® must be drained correctly. Note: The condensate pH level is between 3.1 and 4.2, Pentair recommends to neutralize the condensate to avoid potential damage over time to the drainage system, and to comply with local water authorities where applicable. - Page 41 P-Trap, so that no exhaust gases can Tubing through leak out the condensate tubing. P-Trap Bracket Figure 33a. Tubing through P-Trap Bracket (no condensate neutralizer) ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide...
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Page 42: Electrical Connections
Not properly bonding and grounding the heater increases the risk of electrical shock. Damage to the heat exchanger can occur from electrolysis when the heater is not bonded properly. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... - Page 43 The ETi 250 heater 120 VAC (Blue plug) voltage selector is NOT interchangable with the Pentair MasterTemp® or StaRite® Heater voltage selector (Black plug) 120 VAC 240 VAC (BLUE) (RED) ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide...
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Page 44: Remote Control Connections
Yellow jumper wire below the fuse. The fireman’s switch connection must be a dry contact and must not supply power to the heater. Powering the fireman’s switch connection externally may damage the heater, and is not covered by the warranty. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 45: Connecting The Heater To The Intellicenter Control System Load Center Via Rs-485
Panel wing nuts Control Panel Drill an appropriate size hole for the flexible conduit or strain relief to be used. to secure the RS-485 wires. Figure 37. Figure 38. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 46: Connecting The Rs-485 Cable From The Heater To The Load Center
IntelliCenter Control System circuit board (see diagram below). Secure the conductors with the screws. For wiring details, refer to the pin configuration shown below. Note: Multiple conductors may be inserted into a single screw terminal. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... - Page 47 9. Secure the panel with the two (2) retaining screws. Close the front door and secure with the latch. See Figure 37 on page 45. 10. SWITCH ON AC power to the IntelliCenter Control System Load Center. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide...
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Page 48: Heater Connection Wiring Diagram
Electrical Connections HEATER CONNECTION WIRING DIAGRAM BYPASS VALVE 3-WIRE CONTROL 1 2 3 4 FLAME FENWALL ETi 250 ICM Figure 41. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 49: Heater Ladder Wiring Diagram
Electrical Connections HEATER LADDER WIRING DIAGRAM Figure 42. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 50: Troubleshooting
All keypad disabled Flame Sensor ERR IGN (To Reset: Cycle Follow diagram on page 56 Power) ERR FT Follow diagram on page 51 OPEN Thermal Fuse or Thermal Wire Fuse ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 51: Initial Troubleshooting Chart
Fire and Explosion hazard. Do not jumper Hazardous voltage. Can shock, burn or kill. WARNING Disconnect power before servicing any components. switch terminals to remedy a failed safety switch. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 52: Heater Will Not Fire A
Replace Membrane Pad. Jumper J6-6 and J6-3. Does mode toggle between POOL and SPA? Replace Control Board. GO TO “HEATER WILL NOT FIRE - B” Page 53. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 53: Heater Will Not Fire B
25 gal/min (95 LPM) Check if any of the other Go to “Diagnostic Alarms (Pages 53 and 54) Alarms are activated. Go to Diagnostics Alarms (Pages 54 and 58) ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 54: Diagnostics Leds: Ps, Hls, Tf, Ign, Afs, Ag1, Fs
See illustration (B) on page 61. Also between the Spark Electroides and the Burners 0.6 in - 0.66 in See illustration (B) on page 61. Continue on next page. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... - Page 55 GND terminals of Ignition board. NOTE 2: Voltage appears about 24 seconds after Control Module and call for heat, and may be on for only about 7 seconds. Control Board. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide...
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Page 56: Diagnostics Alarms: Ps, Afs, Ags, Hls
Replace thermistor or Control CONTINUE Board to correct overheating. If problem persists, verify proper operation of Internal Bypass Valve and Thermal Governor, and check for Heat Exchanger blockage. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 57: Alarms: Sfs
Code “E05” or “E06” ? (Basic) Clean/tighten pins as DONE needed. Reset power to Heater and DONE retry. Heater should fire. Reset power to Heater and retry. Heater should fire. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 58: Alarms: Cfs, Tf, E01 Or 126
Replace thermal fuse. customer support. Verify resistance of water thermistor, Replace PCBA. EO1 or 126 10k Ω at 77F. If OK replace thermistor. Fix wiring or replace thermistor. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 59: Burner Troubleshooting
Note: The timer can also be reset Contact a qualified technician or service through the RNC RESET menu. agency to service the condensate neutralizer cartridge. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 60: Maintenance And Care Instruction
CAUTION: The gasket ensures that the combustion chamber is sealed. If the gasket appears to be damaged, DO NOT reuse it. The combustion chamber must be replaced with the burner unit. To replace it, call Pentair Customer Support at 800. 831.7133. -
Page 61: Burner Spark Electrode And Flame Sensor Rod Annual Inspection
Explosion hazard. Any heater installed with restrictive devices in the piping system downstream from the heater, (including check valves, isolation valves, flow nozzles, or therapeutic pool valving), must have a relief valve installed as described above. Pressure Relief Valve Figure 46. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 62: After Start-Up
WINTER OPERATION AND WINTERIZATION Notice: Pentair recommends to use a blower to remove all of the water out of the heater in areas subject to freezing temperatures while the heater is not being used. WARNING Explosion hazard. -
Page 63: Removal Of Condensate Cartridge In Freezing Temperatures
Removal of Condensate Cartridge in Freezing Temperatures If the ETi 250 heater is installed outdoors and must operate in below freezing temperatures (32° F/0° C or below), to prevent freezing of the condensate line, the condensate neutralizer cartridge located inside the heater must be removed. -
Page 64: Chemical Balance
You must maintain a disinfectant residual level adequate enough to assure a continuous kill of bacteria or virus introduced into pool water by swimmers, through the air, from dust, rain or other sources. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... - Page 65 Start-up TDS includes source water TDS and any other inorganic salt added at start-up. NOTE (**): Failure to adhere to the listed water chemistry parameters may result in premature failure of the heat exchanger and will void the warranty. ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide...
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Page 66: Heater Replacement Parts
Burner Assembly (KIT) 476386 Control Housing 476389 Inlet Brass Fitting 462055 Outlet Brass Fitting 462056 Heat Exchanger Union Adapter (KIT) 476106 Bracket, Air Manifold 476400 Air Manifold 476401 ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 67: General Replacement Parts
INLET AND OUTLET PLUMBING ASSEMBLY, SEE PAGE 72 EXHAUST ASSEMBLY CONDENSATION FLOAT SWITCH ELECTRICAL PANEL SEE PAGE 73. TERMINAL BOARD, SEE PAGE 74. ETi 250 Heater Illustrated Replacement Parts ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 68: Heater Blower Assembly Replacement Parts
Replacement Parts 250 HEATER BLOWER ASSEMBLY REPLACEMENT PARTS ® (CONTINUED) Blower Assembly PARTAL BLOWER ASSY ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... - Page 69 Replacement Parts 250 HEATER BLOWER ASSEMBLY REPLACEMENT PARTS ® (CONTINUED) 2X TUBING Heat Exchanger Assembly and Blower Assembly ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide...
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Page 70: Heat Exchanger Assembly Replacement Parts
Replacement Parts 250 HEAT EXCHANGER ASSEMBLY REPLACEMENT PARTS ® Heat Exchanger Assembly ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... - Page 71 Replacement Parts 250 HEATER HEAT EXCHANGER ASSEMBLY REPLACEMENT PARTS ® (CONTINUED) Heat Exchanger Assembly ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide...
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Page 72: Heater Manifold Assembly - Inlet And Outlet Assembly Replacement Parts
REPLACEMENT PARTS HEAT EXCHANGER UNION ADAPTER KIT WATER BYPASS ASSEMBLY KIT WATER MANIFOLD ASSEMBLY KIT Manifold Assembly - Inlet and Outlet Plumbing Assembly WATER BYPASS KIT Manifold Assembly ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 73: Heater Condensate And Exhaust Assembly Replacement Parts
Condensate Neutralizer Cartridge (Optional, P/N 476375 sold separately). The cartridge may be mounted external to the heater for an indoor installation. Condensate Neutralizer Cartridge Assembly and Exhaust Assembly ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... -
Page 74: Heater Operator Control Panel Assembly Replacement Parts
Replacement Parts 250 HEATER ELECTRICAL PANEL REPLACEMENT PARTS ® Electrial Panel ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide... - Page 75 250 HEATER OPERATOR CONTROL PANEL ASSEMBLY REPLACEMENT PARTS ® Control Panel Circuit Board Assembly and Side Panel Item 17 Item 47 Intake Kit (#17) & Blower Gasket (#47) ETi 250 High Efficiency Pool and Spa Heater Installation and User’s Guide...
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