Technical information

14
Servicing should only be performed by a Qualied Service Technician
DRAFT PROVING PRESSURE SWITCH – SETTINGS
DRAFT PROVING PRESSURE SWITCH TABLE
BTN Models BTR Models
Pressure Setting
To Close Switch
(Inches W.C.)
120 -2.40" ± 0.07"
154 -2.20" ± 0.07"
180, 250 -1.60" ± 0.07"
199C -3.00" ± 0.10"
199, 200 -1.95" ± 0.07"
275 -2.30" ± 0.07"
310 -2.60" ± 0.10"
366 -2.00" ± 0.07"
400 -1.75" ± 0.07"
151 -2.50" ± 0.10"
201 -2.20" ± 0.07"
Note: Pressure Switch Contacts are Normally Open “N.O.” and close on a fall in pressure.