Pentair CH installation manual Indicator Light Description, Thermostat Knob Stopper

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Operation (contd.)

26

 

 

OPERATING (CONTROLS)

Dual Temperature Control System - (Electronic and Millivolt Models)

For convenience and economy all MiniMax CH heaters are equipped with two thermostats on the front of the heater control panel; see Figure 3.

Figure 3.

THERMOSTAT KNOB STOPPER

Each thermostat is equipped with a mechanical stop that can be locked or unlocked with use of a screwdriver to prevent temperatures in excess of that desired by the user; see Figure 4.

The maximum setting can be adjusted by loosening the screw "A" and turning the stopper dial to desired maximum setting. Lock the setting by tightening the screw. The Mechanical stop is under the knob. Ensure that the knob is stopping at the correct position when the knob is rotated clockwise from a lower temperature position. (See Thermostat Adjustment.)

NOTE

To eliminate error due to piping heat losses, measure pool temperature with an accurate thermometer directly at the pool or spa.

THERMOSTAT ADJUSTMENT

The knob with locking feature eliminates the need for constant thermostat adjustments. Set the knob pointer to the desired pool or spa temperature.

If further adjustment is needed, rotate the knob until the desired temperature is obtained. This knob position corresponding to your desired maximum pool or spa temperature may now be preset (locked) by the knob stopper which prevents the knob from being turned beyond the maximum temperature you set.

 

Knob Stopper

Figure 4.

Screw A

POWER (THERMOSTAT SELECT) SWITCH

The Pool/Off/Spa switch allows the heater to be turned off when heating is not desired.

1.“Pool” position - Maintains selected pool temperature.

2.“Off” position - Heater will not come on regardless of drop in pool or spa temperature.

3.“Spa” position - This allows separate control of spa water temperature.

INDICATOR LIGHT DESCRIPTION

The MiniMax Pool Heater provides nine status indicator lights, six can be seen from the front of the control panel which help you understand the operation of the heater. If something should go wrong, the lights will aid in troubleshooting the problem. Three additional lights can be seen after opening the control panel. These three lights give the service technician advanced troubleshooting capability. All the LED lights are green with the exception of the red service LED.

POWER LIGHT (POWER)

The light is on at all times, in any switch position, indicating 24 VAC power is being supplied to the control circuit. If it fails to light, no other light will be on. Possible causes are:

a)external power to the heater is disconnected, check service panel circuit breaker or fuses; b) local circuit breaker inside the transformer has tripped -- investigate cause before resetting; c) transformer has failed.

THERMOSTAT (TSTAT)

This light is on when the thermostat contacts close, signaled by the water temperature falling below the setpoint, calling for the heater to fire to maintain the desired water temperature.

AUXILIARY (AUX)

This light is on when it indicates the remote switch contacts are closed. This allows you to observe if your remote switch is properly closing the heater control circuit. When shipped from the factory a jumper is installed to maintain closed circuit in the absence of a remote switch.

PRESSURE (PRESS)

This light is on when Spa/Pool Selector switch is on, indicates the circulation pump is running properly. If pressure light fails to light, the pump may have lost its prime or water flow may be restricted by an inadvertently closed valve or clogged filter or pump basket. If you have determined that there is no water flow restriction to the heater, you should call a qualified serviceman.

P/N 472128

A-4

Rev. B 1-17-03

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Contents For additional free copies of this manual call 800 For Your Safety Read Before OperatingWhat to do if YOU Smell GAS Table of Contents Code Requirements Important NoticesOperation contd Warranty InformationSafety Rules To Turn OFF GAS to Heater For Your Safety Read Before LightingLighting Instructions Dual Temperature Control System Operating ControlsSpring and Fall Operation Maintenance InstructionsEnergy Saving Tips Winter OperationIf pH becomes too high over alkaline, it has these effects Maintenance contdChemical Balance Alkalinity High LowInstallation Instructions SpecificationsPlumbing Installation contdPlumbing Connections Water Connections Insulating the High LimitsGAS Line Installations GAS ConnectionsRegulated Manifold Pressure Test Outdoor Installation only VentilationFront Stack Type Indoor Draft Hood KIT MiniMax CH Millivolt Wiring Diagram ElectricalTroubleshooting General Heater Short Cycling Rapid On and Off OperationMinimax CH Heater ALL Models MiniMax CH Parts List MiniMax CH Parts List, contd Rev. B MiniMax CH 150 IID Model Operation Operating InstructionsTo Turn OFF GAS to Appliance Safety Lockout Indicator Light Description Thermostat Knob StopperTroubleshooting Controls Heat HeatTroubleshooting Controls Regulated Manifold Pressure Test InstallationTransformer Wiring Instruction Electronic Ignition Wiring DiagramRemote Switch Dual Therm IID only Wire RemoteMinimax CH Heater 150 IID Model MiniMax CH Parts List 150 IID Model MiniMax CH Parts List 150 IID Model, contd Rev. B MiniMax CH Heaters Limited Warranty
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CH specifications

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