A.O. Smith Cyclone Xi User Manual

CYCLONE Xi COMMERCIAL GAS WATER HEATER
BTH 120 thru 500 SERVICE HANDBOOK
A.O. Smith – Technical Training Department 34 Ashl
and City, Tennessee © 2009
Servicing should only be performed by a Qualified Service Agent 316586-000
CONTROLS – PRESSURE SWITCHES – BTH 300,400,500
Note: Check the website www.hotwater.com
for Technical Bulletin A023-06 “Air Pressure
Switches” under “Literature/Technical Bulletins”
Top View of Pressure Switches
BTH 300,400,500
BLOCKED INLET
PRESSURE SWITCH
MODEL PRESSURE
300 -.085”WC
400 -1.25”WC
500 -1.35”WC
Norm ally Close d/
Open on a fall in
Pres sure
Tolerance +/-.05”WC
LOW GAS PRESSURE
SWITCH
MODEL PRESSURE
Natural +4.6”WC
LP +9.0”WC
Nor m ally Open/
Close on a Rise in
Pressure
Tolerance +/-.05”WC
BLOCKED EXHAUST
PRESSURE SWITCH
MODEL PRESSURE
300 +1.15”WC
400 +1.39”WC
500 +1.77”WC
Norm ally Closed /
Open on a Rise in
Pres sure
Tole rance +/-.05”WC
BLOWER PROVER
PRESSURE SWITCH
MODEL PRESSURE
300 +1.0”WC
400 +2.5”WC
500 +4.5 'WC
Norm ally Open / Close on
a rise in Press ure
Tole rance +/-.05”WC

A.O. Smith Cyclone Xi Specifications

General

Brand	A.O. Smith
Model	Cyclone Xi
Category	Water Heater
Language	English