State Industries STC-077 dimensions Pressure Switches Part Number / Activation PRESSURE†

S U F S E R V I C E H A N D B O O K

C O M P O N E N T I N F O R M A T I O N

PRESSURE SWITCHES (CONTINUED)

PRESSURE SWITCHES

PART NUMBER / ACTIVATION PRESSURE†

Model	Blocked Inlet	Blower Prover	Low Gas Pressure	Blocked Outlet
	Normally Closed	Normally Open	Normally Open	Normally Closed
	Opens on a fall	Closes on a rise	Closes on a rise	Opens on a rise
SUF 150	193363-000 / -0.76”	194706-000 / +1.00”	N/A	193362-000 / +2.60”
	193355-000 / -1.80”	194706-000 / +1.00”	N/A	193357-000 / +4.00”
	193355-000 / -1.80”	194706-000 / +1.00”	N/A	193357-000 / +4.00”
SUF 199	193363-000 / -0.76”	194706-000 / +1.00”	N/A	193364-000 / +2.87”
	193356-000 / -2.00”	194706-000 / +1.00”	N/A	193357-000 / +4.00”
	193356-000 / -2.00”	194706-000 / +1.00”	N/A	193357-000 / +4.00”
SUF 240	193361-000 / -0.77”	194706-000 / +1.00”	191149-005 / +5.20”	193357-000 / +4.00”

†.Pressure values are given in inches of water column pressure (“W.C.).

Negative pressure values in this table are preceded by a “-” minus sign and indicate pressure below atmospheric; in a vacuum. Positive pressures are preceded by a “+” plus sign and indicate pressure above atmospheric.

Technical Training Department	34	State Water Heaters
STC-077		Ashland City, Tennessee © 2004