Question about Rheem Paloma PTG-42PVN / RTG2-42PVN Natural Gas Indoor

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What should the min and max manifold pressures be on my tankless water heater PTG2-42PVN. I'm under 3200 feet in elevation.

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That is good technical question for Rheem.
Open following link for Rheem tankless resources including chat, possible manual, and typical service manual.

May 2011. If you find exact information from Rheem, then add a comment to this thread so others with same question can find possible answer.

Upvote the help.
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Posted on May 28, 2011


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Which type Richmond water heater?
Is this a tankless water heater or tank-type?

Tankless are notorious for 'cold water sandwich' under exact conditions you describe. You might need tankless with larger BTU burner.
Don't install a tankless.

If you have tank-type water heater, then I suspect a clog in the hot water line, or single-handle faucet cartridge in show is going bad.
Same problems can contribute to tankless problems.

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Indoor tankless 74-pvn. power went off and has returned. get error code 24 when try to power on

Open following links for Rheem troubleshooting resources, including Rheem chat, error codes, and possible manual.

Error codes are considered start-point for troubleshoot.
Error code 24 is malfunction of operational switch: press max or min button on PC board to reset, -or- replace PC board.
Max-min button is sometimes located above dip switches, and can be 1 button that is rotated with screwdriver or 2 separate buttons. Look at wiring diagram in manual that came with product.

Fix most tankless problems yourself, same day, for $330.

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Vibrating when the heater starts to heat water

Things to Check:

1. incoming gas pressure (minimum 5" when unit firing)
2. Make sure damper on top of unit isn't sticking
3. check vent length and #elbows versus installation manual specs
4. if above 2000', disconnect high elevation termination

If these all check out, you'll probably need to do a manifold adjustment. Call Noritz for assitance on this.

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I have a ge smartwater filter system #GXWHO4F. My problem is that since system was installed the water pressure and the water volume drops alot when more than one faucet is turned on.The filter system...

Filters always reduce pressure.
You can add a pressure tank between filter and tankless.
Tankless are sometimes like bowling on a ship.

Add a comment saying how you fixed problem.

Fix most tankless problems yourself, same day, all brands for $330.

Absolutely feel obligated to upvote the free help.
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For a price, expert works with you while you work on water heater or any do-it-yourself project.
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Possible flow sensor issue. Check to see if your water pressure fluctuates a lot or is fairly steady. These units are sensitive to the pressure. take care.

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Code 1L on the pad, I flushed with pure venegar. for at least 5 hours the problem persist, help

open cover.. find buttons min/max press nim then press mas and then hold min and max presses for 5 seconds or so. Power off controller and power back on..You have reset your fault code til next time.

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What s de minimum working pressure for a tempra 24?

Hello. let me help you. The water pressure is what it is in the house. In other words, the tankless water heater doesn't increase the pressure of the water, it only heats the water. There is no official minimum pressure but the minimum pressure you would be happy with in any home would be 20 pounds per square inch, PSI.

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Water Temperature Fluctuates

no the tub faucet is the only faucet that is wide open you might have to not run full blast on the faucet , your tankless water heater is under sized for the application, to many gallons per min going thru the unit, look at the rating chart for your unit, the r94 is only 9.4 gallons per min, and a tub faucet can be upto 5 gallons per min, depending on the faucet,,

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