Kenmore THE ECONOMIZER 153.33298 - Manual (Page 23)

Installation Instructions (cont’d)
ALL MODELS —THROUGH ROOF
3 " DIA. VENT NUMBER OF 90° DEG.
MAX. LENGTH fFT.) ELBOWS*
1 15 1
1 10 2
105 3
100 4
95 5
90 6
ALL MODELS — THROUGH ROOF
OPTIONAL 2" VENT PIPING
2 " DIA.VENT NUMBER OF 90° DEG.
MAX. LENGTH (FT) ELBOWS*
50 1
45 2
40 3
35 4
30 5
25 6
* NOTE: Two 45° elbows are equivalent to one 90° elbow.
One 90° elbow equals 5 feet of equivalent vent length.
Gas Piping
A gas line of sufficient size must be run to the water heater.
Consult the current edition of National Fuel Gas Code ANSI
Z223.1) also referred to as NFPA 54 and the gas company con­
cerning pipe size.
There must be;
• A readily accessible manual shut off valve in the gas supply
line serving the water heater, and
• A drip leg (sediment trap) ahead of the gas control valve to
help prevent dirt and foreign materials from entering the gas
control valve.
• A flexible gas connector or a ground joint union between the
shutoff valve and control valve to permit servicing of the unit.
Be sure to check all the gas piping for leaks before lighting the
water heater. Use a soapy water solution, not a match or open
flame. Rinse off soapy solution and wipe dry.
Standard Models are for installation up to 3,300 feet above sea
level.
High Altitude Models are for installation from 3,300 to 5,500
feet above sea level.
If a standard model is installed above 3,300 feet or a high altitude
model is installed above 5,500 feet, the input rating must be
reduced at the rate of 4 percent for each 1,000 feet above sea level
which requires replacement of the burner orifice in accordance
with the National Fuel Gas Code Z223.1, NFPA 54. Contact the
local .Sears Service Center or your local gas utility for further
information.
AWARNING
Make sure the gas supplied is the same type listed on
the model rating plate. The inlet gas pressure must
not exceed 10.5 in. water column (2.6 kPa) for natu­
ral gas or 13 in. water column (3.2 kPa) for Prop^e
(L.P.) gas. The minimum inlet gas pressure listed on
the model rating plate is for the purpose of input
adjustment.
AWARNING
If the gas control valve is subjected to pressures
exceeding Vi pound per square inch (3.5kPa), the
damage to the gas control valve could result in a fire
or explosion from leaking gas.
AWARNING
If the main gas line shutoff serving all gas appliances
is used, also turn “off” the gas at each appliance.
Leave
all gas appliances shut off until the water
heater installation is complete.
AWARNING
Failure to replace the standard orifice with a high
altitude orifice when installed at elevations above
3,300 feet (or above 5,500 feet for high altitude
model), could result in improper and inefficient
operation of the cqipliance, producing carbon monox­
ide gas in excess of safe limits, which could result in
serious injury or death. Contact the local Sears
Service Center or your gas supplier for any specific
changes which may be required in your area.
AWARNING
The appliance and its gas connection must be leak
tested before placing the appliance in operation.
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