Problems with new SIT NOVA 820 valve

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rharr3558

New Member
Feb 17, 2022
2
new hampshire
Newbie here.

Updating old Majestic Direct Vent Fireplace. Had an old Honeywell RF comfort control valve which I am replacing with new SIT NOVA 820 valve and pilot assembly. Pilot will light and stay lit after pushing pilot valve in for a few seconds, but only after the entire main burner ignites. As soon as I release the pilot valve, the main burner extinguishes and the pilot will stay lit (even after barely holding down pilot valve for a few seconds). After switching over to "On" position, the main burner will not light -- unless the valve is manually pushed in and held. As soon as it is released, the main burner turns back off and pilot stays lit. Pilot will extinguish when valve is turned to off setting. Thermocouple and Thermopile voltage measurements are all within specification.

Sounds like a bad valve to me, but maybe there is something else I can check. Any thoughts?
 

Fingerlakes Fireplace

Burning Hunk
Jan 9, 2017
188
Upstate NY
Newbie here.

Updating old Majestic Direct Vent Fireplace. Had an old Honeywell RF comfort control valve which I am replacing with new SIT NOVA 820 valve and pilot assembly. Pilot will light and stay lit after pushing pilot valve in for a few seconds, but only after the entire main burner ignites. As soon as I release the pilot valve, the main burner extinguishes and the pilot will stay lit (even after barely holding down pilot valve for a few seconds). After switching over to "On" position, the main burner will not light -- unless the valve is manually pushed in and held. As soon as it is released, the main burner turns back off and pilot stays lit. Pilot will extinguish when valve is turned to off setting. Thermocouple and Thermopile voltage measurements are all within specification.

Sounds like a bad valve to me, but maybe there is something else I can check. Any thoughts?
Is the valve installed backwards?
There is an arrow on the valve.
 
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