Typical Installation - A.O. Smith High Efficiency 100 series Installation Instructions Manual

A Vent Pipe
B Draft Hood
C Anode (Not Shown)
D Hot Water Outlet
E Insulation
F Gas Supply Piping
G Manual Gas Shut-off Valve
H Ground Joint Union
I Drip Leg (Sediment Trap)
* INSTALL IN ACCORDANCE
WITH LOCAL CODES.
* DRIP LEG AS REQUIRED
BY LOCAL CODES.
TO VENT
TERMINATION ON
ROOF
A
B
D
V
E
R
F
G
AA
H
U
I
Y
W
X
J
Z
K
* ALL PIPING MATERIALS TO BE
SUPPLIED BY CUSTOMERS.

TYPICAL INSTALLATION

GET TO KNOW YOUR WATER HEATER - GAS MODELS
J Inner Door
K Outer Door
L Union
M Inlet Water Shut-off Valve
N Cold Water Inlet
O Inlet Dip Tube
P Temperature-Pressure Relief Valve
Q Rating Plate
R Flue Baffl e
INSTALL THERMAL EXPANSION
TANK IF WATER HEATER IS
INSTALLED IN A CLOSED
WATER SYSTEM
L
M
N
O
VACUUM RELIEF
VALVE
*INSTALL PER
LOCAL CODES
BB P
Q
DISCHARGE PIPE
(DO NOT CAP OR PLUG.)
S
T
NOTE: POWER CORD NOT
SHOWN FOR CLARITY
(S) GAS CONTROL VALVE/
THERMOSTAT
STATUS
ON
OFF
LOW
VAC
GAS CONTROL/TEMPERATURE KNOB
(U) MANIFOLD/BURNER ASSEMBLY
PILOT ASSEMBLY
IGNITER
WIRE
MANIFOLD
TUBE
MANIFOLD DOOR
6" MAXIMUM
AIR GAP
FLOOR DRAIN
5
S Gas Control Valve/Thermostat
T Drain Valve
U Pilot and Main Burner
V Flue
W Metal Drain Pan
X Igniter Wire
Y Base-Ring Filter
Z FV Sensor
AA Transformer
BB Flue Damper
STATUS
LIGHT
MAIN BURNER