Raypak 155C installation instructions Pressure Switch, High Limits, Flame ROLL-OUT Safety Switch

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PRESSURE SWITCH

The pressure switch, or heater actuator, insures that the heater operates only when the filter pump is in operation. It is factory set at 1.75 PSI for deck level installations. When the heater is located below the level of the spa or pool, it may be necessary to reset the pressure switch to compensate for the no-flow static head. If it is necessary to reset the pressure switch, we recommend the following procedure:

PRESSURE SWITCH ADJUSTMENT:

1.With pump and heater on, turn adjustment knob (clockwise) until a click is heard from the gas valve.

2.Turn adjustment knob (counter clockwise) 1/4" turn.

3.Turn pump off and on several times. Heater should shut off immediately. If it does not, repeat steps above until proper adjustment is made.

TWO SPEED PUMPS

In some cases, the flow on the low-speed is insuf- ficient to operate the heater. This is apparent when the pressure switch cannot be further adjusted or if the heater makes banging noises. In these cases, the pump must be run at high speed when heating the water.

CAUTION: Do not operate the heater without the functionof a properly adjusted pressure switch.

HIGH LIMITS

The heater is equipped with two automatic high limits. Set to operate at 135°F and 140°F.

NOTE: An erratic high limit is often characteristic of an internal heat exchanger problem, i.e. scale buildup, and U.G. operation. Refer to troubleshooting section.

Adjustment Knob

Fig. # 8069.1

PRESSURE SWITCH ADJUSTMENT RANGE

Heat Exchanger Height

5' Max.

5' Max.

Pool or Spa

 

Heat Exchanger Height

Fig. # 8152.0

NOTE: If heater is installed outside of the limits shown,

aflow switch must be used in place of the pressure switch when mounted and wired adjacent to the heater.

Fig. # 8153.0

HIGH LIMIT REMOVAL

1.Shut off main electrical power switch to heater.

2.Remove inspection panels.

3.Drain heater.

4.Remove defective high limit and replace with a new high limit.

5.Reverse above procedure to re-install.

FLAME ROLL-OUT SAFETY SWITCH

The heater is equipped with a thermal cutoff device to prevent flame roll-out in the event the heat ex- changer becomes blocked. This is a "Single-use" type fusible link or thermal fuse, that must be replaced when disabled by an over temperature condition, caused by excessive restriction in the heat exchanger flue pas- sage.

Fig. #9177

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Contents Versa What to do if YOU Smell GASContents Part TWO INSTALLATION/SERVICE InstructionsBurners START-UP ProceduresBefore START-UP WaterMillivolt System Operating Instructions Electronic Ignition SystemsIID After START-UP Water Pressure SwitchVisual Inspection Pool & SPA Water Chemistry Maintenance and Care ProceduresBasic Tips if Heater will not Fire Automatic Chlorinators and Chemical FeedersCold Weather Operation Pressure Switch Compression Fitting Return HeaderWinterizing the Pool & SPA Heater Installation Instructions General SpecificationsReceiving Equipment Clearances High Wind Conditions Outdoor Units only Combustion AIR Indoor Units only Indoor HeatersVenting Connections Z223.1 Vent PipingGAS Supply Connections Pipe Sizing for GAS ConnectionsPlumbing for Water Connections Location Companion Flange ConnectionsUnitherm Governor Operation Auxiliary Bypass Valve AdjustmentPressure Relief Valve Installation Internal Automatic BY-PASS ValveElectronic Intermittent Ignition Device System IID Electrical WiringMillivolt System Honeywell Intermittent Ignition DeviceWiring Diagram KEY ANSI/NFPAWiring Diagram Millivolt Units Fig. #2182eWiring Diagram 152148 Model 155 IID General Location of Controls Controls / Adjustments / ReplacementsTemperature Controls View of Heater from Front View of Heater from BackFlame ROLL-OUT Safety Switch Pressure SwitchHigh Limits GAS Valve Removal Pilot Removal and CleaningBurner Drawer Removal Main Burner and Orifice RemovalUnitherm Governor U.G. Replacement Control Immersion Well ReplacementHeat Exchanger Removal Combustion Chamber Removal Tube Replacement ProcedureDesooting Procedure Refractory Panels TOP ViewTrouble Shooting Guide Electrical Millivolt Electrical Electronic Ignition IID Troubleshooting Honeywell S8600High Voltage Electrical Solid State Thermostat IID Voltage Between 21.5-28.5 Voltage Outside Range 21.5-28.5Replacement Parts List RAYPAK, INCPage Page Page Warranty Exclusion

155C specifications

The Raypak 155C is a versatile and efficient heater designed for both residential and commercial applications. Renowned for its robust construction and reliable performance, this unit is an excellent choice for pool and spa heating as well as for providing comfortable ambient temperatures in enclosed or outdoor spaces.

One of the standout features of the Raypak 155C is its innovative copper heat exchanger, which is designed for maximum heat transfer efficiency. This technology allows for rapid heating capabilities, ensuring that water reaches the desired temperature quickly and effectively. The heat exchanger is also resistant to corrosion, thanks to its durable design, prolonging the unit's life and maintaining performance over time.

Designed with user convenience in mind, the Raypak 155C features an intuitive digital control system. This user-friendly interface allows for easy temperature adjustments and monitoring, giving users precise control over their heating requirements. An integrated diagnostic system is also included, providing real-time feedback on the heater's performance and alerting users to any potential issues, which helps in proactive maintenance.

Incorporating advanced safety features, the Raypak 155C includes a high limit switch and a water flow switch, ensuring safe operation at all times. These safety mechanisms prevent overheating and dry firing, protecting both the heater and the connected plumbing system.

The Raypak 155C is engineered for energy efficiency, meeting and exceeding industry standards. With a compact design, it ensures easy installation and integration into existing setups, making it a favorable choice for various applications. Its quiet operation adds to user comfort, allowing it to be installed in residential settings without causing disturbances.

With a heating capacity of 155,000 BTU, the Raypak 155C is capable of effectively heating larger pools and spas, making it ideal for homes with extensive water features. The heater is designed to run on natural gas or propane, providing flexibility based on user preferences and availability.

Overall, the Raypak 155C combines state-of-the-art technology with practical features, making it one of the top choices for those looking to enhance their pool experience or improve comfort levels in their outdoor areas. Its reliability, efficiency, and user-friendly features make it a valuable investment for any property.
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