Rheem PowerVent Series Technical Service Bulletin

TECHNICAL SERVICE DEPARTMENT
Technical Service Bulletin
1-800-432-8373
PowerVent with Electronic Control Sequence of Operations
1622.docx 3
With the blower running,
the pressure switch will
close.
The control logic prevents
jumping this pressure
switch for main burner.
Pre-purge may last up to 30
seconds.
The control will attempt this
sequence 5 times before
entering into a hard lockout.
IF the exhaust side of the
venting creates too much
back pressure due to
blockage, the pressure
switch will not close
inducing a fault.
Exhaust pressure switch:
Breaks on pressure fall;
-.45 ± .05 in w.c.
The hard lockout will require
a manual power cycle of the
control to clear the hard
lockout
A signal is passed thru the
pressure switch to the
control valve.
(IF blower, venting, &
pressure switch are all OK.)
This is the signal needed to
energize the igniter. The
igniter is energized and pilot
valve is energized
immediately after the spark
begins.
Ignition attempt Visually verify the igniter is
sparking inside the
combustion chamber.
Pilot flame and main burner
immediately follow.

Rheem PowerVent Series Specifications

General

Brand	Rheem
Model	PowerVent Series
Category	Water Heater
Language	English