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Operating
Instructions
This water heater is equipped
with an electrically
operated
vent-
ing system and a standing
pilot. For the burner to come on, the
water heater thermostat
must call for heat. Then
the system will
begin
sequencing,
each section
proving
itself
before
gas is
allowed to flow to the burner.
BLOWER MOTOR
BEFORE
THE WATER
HEATER
WILL
OPERATE:
1. The control
system
must be connected
to a 110/120
volt
power supply. The control
system has an overall rating of 2
amps. The
water heater
must
be securely
and adequately
grounded
in accordance with local codes and with the latest
edition of the National
Electrical Code ANSI/NFPA
70.
2. The
ON/OFF
toggle switch,
located
on the control
box
above the thermostat
must be in the "ON"
position
for the
electrical control
system to operate
allowing the gas portion
to operate (ignite burner).
3. The pilot must be lit. See Lighting
instructions
on page 23
of this manual
or located adjacent
to the thermostat
on the
water heater.
4. The
gas control
knob located
on the thermostat
must
be
turned
to the
ON
position
for the gas to be able to flow.
5. The venting manual
reset switch must be in the closed posi-
tion. See "Venting
Manual
Reset Switch" in the "For Your
Information
Section".
6. There is a non-resettable
hi-limit
switch in the thermostat,
which must be good (closed) for the thermostat
to be oper-
ated. See "High Temperature
Shut Off System" in the "For
Your Information
Section".
OPERATION
When
the thermostat
calls for heat, gas is allowed
to flow to a
(Normally
open) pressure switch closing it. An electrical circuit
is then made to the blower, turning
it on. The indicator
light
located on the control box will come on. When the blower has
achieved sufficient
venting,
the air pressure switch will close and
the indicator
light will go off. A 120 volt circuit will be com-
pleted through
the venting
manual
reset switch and on to the
120 volt gas valve located
ust below the thermostat.
The
120
volt gas valve will open allowing gas to flow to the burner. The
standing
pilot will establish a main burner flame.
VENTING MANUAL
RESETSWITCH
DRAFT HOOD
ON/OFF SWITCH
LIGH%
,_
GAS CONTROL
KNOB *_
GAS THERMOSTAT
AIR PRESSURE
SWITCH
BURNER
120V GAS VALVE
21
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