9
H. ELECTRICAL CONNECTION
The electrical connection for the AdvantagePlus is on the
left side of the combustion shroud. There is a 1/2" knock-
out location for electrical connection. All electrical wiring
must be performed by a qualified licensed electrician,
and in accordance with National Electrical Code and
Canadian Electrical Code, or to the applicable local
codes and standards. The electrical requirements are
for standard 120 volts, 60 Hz., 10 amp service. It is
recommended that an electrical disconnect switch be
placed near the water heater, and that the connection to
the AdvantagePlus be made using 3/8" extra-flex, or 3/8"
greenfield (or equivalent). This unit must be wired with
#14 AWG, and fused for no more than 15 amps. It is
of extreme importance that this unit be properly
grounded and be connected with proper polarity!
Ground the water heater by connecting the green wire in
the electrical access compartment directly to the main
building ground system. It is very important that the
building system ground is inspected by a qualified
electrician prior to making this connection. Once all
connections have been made, the electrical access may
be closed. It is very important that the electrical power is
not turned on until gas and venting connections are
completed and the tank is full of water.
I. GAS CONNECTION
Refer to the below table to size the supply piping to
minimize pressure drop between meter or regulator
and unit. In Canada, use table found in CAN/CSA
B149.1
Maximum Capacity of Pipe in Cubic Feet of Gas per
Hour for Gas Pressures of 0.5 psi or Less and a
Pressure Drop of 0.3 Inch water Column
Gas Table
It is recommended that a soapy solution be used to detect
leaks. Bubbles will appear on the pipe to indicate a leak is
present. The gas piping must be sized for the proper flow
and length of pipe, to avoid excessive pressure drop. Both
the gas meter and the gas regulator must be properly
sized for the total gas load. If you experience a pressure
drop greater than 1” WC, the meter, regulator or gas
line is undersized or in need of service. You can attach
a manometer to the incoming gas drip leg, by removing
the cap and installing the manometer. The gas pressure
must remain between 3.5” WC and 14” WC during stand-
by (static) mode and while in operating (dynamic) mode
at full output. If an in-line regulator is used, it must be
a minimum of 10 feet from the AdvantagePlus. It is
very important that the gas line is properly purged by
the installer, gas supplier or utility. Failure to properly
purge the lines or improper line sizing, will result in
ignition failure. This problem is especially noticeable in
NEW LP installations and also in empty tank situations.
This can also occur when a utility company shuts off
service to an area to provide maintenance to their lines.
The gas valve must not be replaced with a conventional
gas valve under any circumstances. As an additional
safety feature in the AdvantagePlus water heater, the gas
valve in this appliance has a flanged connection to the
swirl plate and blower.
Gas supply shall not exceed a maximum inlet pressure
of 14" water column (350 mm), 1/2 pound pressure (3.4
kPa), between 3.5” WC and 14” WC (natural and
propane). The entire piping system, gas meter, and reg-
ulator must be sized properly to prevent a pressure drop
greater than 0.5" of water column as stated in the
National Fuel Gas Code. Gas pressure information is
listed on the rating plate. It is very important that you
are connected only to the type of gas noted on the
rating plate; “LP” or propane gas or “Nat” natural
gas. All gas connections must be approved by the local
gas supplier or utility in addition to the governing
authority prior to turning
the gas supply on. The nipple
provided for the inlet gas connection is 1/2", and it is
mandatory that a 3/4" to 1/2" reducing bushing (provided)
is used, threaded into the branch of a 3/4" tee, and a drip
leg fabricated, as per the National Fuel Gas Code and in
Canada refer to CAN/CSA B149.1.
You must ensure that the entire gas line to the reduc-
ing bushing connection at the AdvantagePlus is no
smaller than 3/4".
n WARNING
Tank MUST be full of water before power is turned
on. Heat exchanger coil WILL BE DAMAGED if ener-
gized even for a short time while the tank is dry. The
water heater’s warranty does not cover damage or
failure resulting from operation with an empty or par-
tially empty tank. (Reference is made to the limited
warranty for complete terms and conditions)
n CAUTION
THE USE OF FLEXIBLE GAS CONNECTORS IS
NOT RECOMMENDED. HOWEVER, IF USED, IT IS
IMPERATIVE THAT THEY ARE SIZED CORRECTLY.
FLEXIBLE GAS CONNECTORS MUST HAVE A MINIMUM
ID OF 3/4". A MINIMUM 3/4" ID MUST BE MAINTAINED TO
AVOID RESTRICTION OF GAS FLOW! NEVER REDUCE
THE GAS SUPPLY LINE BELOW 3/4"! In Canada, refer
to CAN/CSA B149.1 for approved connections.
(Nominal
Iron Pipe Internal Length of Pipe (Feet)
Size Diameter
(inches) (inches) 10 20 30 40 50 60 70
3/4 .824 278 190 152 130 115 105 96 BTU’S
1 1.049 520 350 285 245 215 195 180 PER
1 1/4 1.380
1,050 730 590 500 440 400 370
}
HOUR
1 1/2 1.610 1,600 1,100 890 760 670 610 560 x1,000
(Nominal
Iron Pipe Internal Length of Pipe (Feet)
Size Diameter
(inches) (inches) 80 90 100 125 150 175 200
3/4 .824
90 84 79 72 64 59 55 BTU’S
1 1.049 170 160 150 130 120 110 100 PER
1 1/4
1.380 350 320 305 275 250 225 210
}
HOUR
1 1/2 1.610 530 490 460 410 380 350 320 x1,000
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