Pentair Mastertemp 400 LPG high pitch squeal possibly low pressure

[ajw22]

Seems to have used the correct orifice conversion kit.

Need to do proper diagnostics starting with putting a manometer on the heater and measuring gas pressures static and when it is running.

The gas pressure may have been ok with the NG orifice and does not work with the LP orifice.

@swamprat69

 

[Jmotley0104]

Seems to have used the correct orifice conversion kit.

Need to do proper diagnostics starting with putting a manometer on the heater and measuring gas pressures static and when it is running.

The gas pressure may have been ok with the NG orifice and does not work with the LP orifice.

@swamprat69

Well no help from pb. If anyone knows a good repair company in the North Dallas area, specifically McKinney let me know.
Much appreciated!

 

[Turbo1Ton]

People think I'm nuts for wanting to be 100% self sufficient, and these are reasons why.

A plumber or HVAC tech who are familiar with pool heaters, would be the next best bet. Realistically you need someone who is capable of troubleshooting a gas fired heating system, starting with measuring the gas pressures at the unit.

--Jeff

 

[Toxophilite]

Well no help from pb. If anyone knows a good repair company in the North Dallas area, specifically McKinney let me know.
Much appreciated!

In Texas, on rental tanks and fills, the company that supplies tank and services (fills) is responsible for the initial gas line inspection and regulator(s) set, as well as initial lighting and operation when a new gas appliance is added. It's a railroad commission requirement. If you buried your tank, then more than likely it's an owned tank and might affect responsibility, but for installs of new heaters and generators here, a TRRC licensed gas company is still required - technically. They should have teed before the house regulator and set a new regulator at the heater, then light, and fully tested. My first call would be to who services your tank.

 

[swamprat69]

Many HVAC companies do not want to work on pool heaters because they are unfamiliar with them, have no ready source of pool heater specific parts from their regular HVAC parts suppliers and often need pool heater specific information such as "sequence of operation" that are often not included in the operation and service manuals. Pool heaters are basically just a form of "open loop" as opposed to "closed loop" boilers with the heating media "water" exposed to atmospheric pressure rather than being pressurized above atmospheric pressure. The heating media "water" chemistry of a pool heater also varies much more than that of a residential heating boiler because of the swings in pool chemistry and can effect the heater operation. There are also a number of parts not commonly found in a residential heating boiler i.e. internal bypass and regulator. During my career as a NATE certified HVAC tech I have felt both capable and comfortable working on many pool heaters because of my understanding of heating systems. I am not sure of what types of residential heating systems are commonly used in Texas, but I would assume that both forced air and heat pump systems are more common than "boilers" which are a good portion of the heating systems in the north and midwest (I am originally from Chicago area). You might try contacting a company with NATE certified technicians and explaining to them ( the Service Manager specifically ) that you have a "pool heater" that is basically an "open loop" boiler that needs to be serviced. I did find a NATE certified company in your area with a large number of certified technicians on the NATE site and you could try to contact them...

Bill Joplins A/C & Heating​

301 East Midway Street
McKinneyTexas, 75069
Phone: (972) 569-8339
Email: [email protected]
Website: www.joplins.net
# of Certified Technicians: 18

NATE

 

[swamprat69]

Sadly many pool companies that work on pool heaters do not have technicians with the full depth of knowledge regarding heating systems needed to work on pool heaters.

 

[Jmotley0104]

In Texas, on rental tanks and fills, the company that supplies tank and services (fills) is responsible for the initial gas line inspection and regulator(s) set, as well as initial lighting and operation when a new gas appliance is added. It's a railroad commission requirement. If you buried your tank, then more than likely it's an owned tank and might affect responsibility, but for installs of new heaters and generators here, a TRRC licensed gas company is still required - technically. They should have teed before the house regulator and set a new regulator at the heater, then light, and fully tested. My first call would be to who services your tank.

Thanks they initially came out to take off their lock but they didn't stay for when it was fired up. I will give them a call to see what they say. My unit is buried but I rent the tank from the company.

 

[Jmotley0104]

Many HVAC companies do not want to work on pool heaters because they are unfamiliar with them, have no ready source of pool heater specific parts from their regular HVAC parts suppliers and often need pool heater specific information such as "sequence of operation" that are often not included in the operation and service manuals. Pool heaters are basically just a form of "open loop" as opposed to "closed loop" boilers with the heating media "water" exposed to atmospheric pressure rather than being pressurized above atmospheric pressure. The heating media "water" chemistry of a pool heater also varies much more than that of a residential heating boiler because of the swings in pool chemistry and can effect the heater operation. There are also a number of parts not commonly found in a residential heating boiler i.e. internal bypass and regulator. During my career as a NATE certified HVAC tech I have felt both capable and comfortable working on many pool heaters because of my understanding of heating systems. I am not sure of what types of residential heating systems are commonly used in Texas, but I would assume that both forced air and heat pump systems are more common than "boilers" which are a good portion of the heating systems in the north and midwest (I am originally from Chicago area). You might try contacting a company with NATE certified technicians and explaining to them ( the Service Manager specifically ) that you have a "pool heater" that is basically an "open loop" boiler that needs to be serviced. I did find a NATE certified company in your area with a large number of certified technicians on the NATE site and you could try to contact them...

Bill Joplins A/C & Heating​

301 East Midway Street
McKinneyTexas, 75069
Phone: (972) 569-8339
Email: [email protected]
Website: www.joplins.net
# of Certified Technicians: 18

NATE

Thank you!

 

[Toxophilite]

Thanks they initially came out to take off their lock but they didn't stay for when it was fired up. I will give them a call to see what they say. My unit is buried but I rent the tank from the company.

Who set the regulator for it, leak test, etc...?

 

[ajw22]

Who set the regulator for it, leak test, etc...?

If the regulator pressures were set when the NG orifices were in place it may not be correct with the change to LOP orifices.

 

[Jmotley0104]

If the regulator pressures were set when the NG orifices were in place it may not be correct with

Thanks