HVAC Questions? Ask an HVAC Expert for Answers ASAP
Welcome to Just Answer! . I will stay with you until the situation resolves. I hold questions open after positive ratings to allow for unlimited follow up.I can look in my files and see if I have the manual on that unit or you can look on the unit sticker for what the 6 blink error code indicates, that will save is some time.If it is a new installation, and the gas pressure is a little high or low and there will not be proper flame impingement onto the flame sensor rod..... or... the flame will be blowing off of the pilot or main burner heads very slightly... the flame needs to make contact wih the burner heads in order for the SBT flame sensor to work.,, those don't use a standard thermocouple.It is unlikely the SBT flame sensor is bad on a new unit... it is common for the gas pressure regulator to be set for the wrong pressure and that affects the flame sensing.Also I need the vent diameter, and details of how the vent is routed and how long the vent run is... I need the same data on the gas line. How long is the run, and what size is it, and what other gas appliances are on the same line.
Meantime I will see if I can find the service manual on that unit.Phil
Water line 19 lbs pressure on a 3/4 line. Within listed limits.
Gas line is a dedicated 3/4 line with a 14 foot run from the meter.
I do not know pressure!!!
Vent ID is 4" running 8 foot total vertical with correct outside Noritz termination cap approved by Rheem. Intake is 4" ID and 6 foot run terminatiion.
There are no blockages( paper or packing material) in the runs.
The flame as viewed through the window appears to be pure blue( no white or yellow from oxygen starvation) I cannot tell if it is dancing above the burners.
Nothing on the cover information regarding the LED CB codes.
note ---By my found info, the error code 13 is related to oxygen and the sensor..One article mentioned flame rod#2 I cannot find the method to check voltages, resistance.
Fittings.. only 5 90 degree elbows. One T for the drip leg.
Rheem input fitting is 3/4 and install info also called for 3/4 piping..
I will search the unit in AM.
Closest thing to a manual is as follows in links
http://www.spiritgroupinc.com/wp-content/uploads/Tankless-Gas-Service-Manual-SVC-820-Final-08-2011.pdf Generic models similar models and
showing recommended gas pressures
Rheem is trying to tell me my Norits 4" venting on the intake is causing the problem.. telling me to use metal fab crap... I ran error 13 even drawing room air without intake venting.
My gas meter has only 3/4 fittings.. how do I overcome that??
I'll keep you posted
I did contact my Gas Company ( NIPSCO) and they concur that gas supply is causing the starvation code 13 (not air as Rheem said- but fuel).
You were 100% right. The unfortunate part is I just had the Gas company engineer order a new high volume meter ($300.00). I will then pipe 1 1/4 black independent to the Tankless water heater and am able to T-off that line to supply my stove and furnace at the meter and all will have plenty of volume at the correct pressure. The engineer said that 3/4 would only work within 6 feet of meter and at that its marginal. Thank you again.