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ウォーターヒーター AquaStar 125B NGのPDF 据付・取扱説明書をオンラインで閲覧またはダウンロードできます。AquaStar 125B NG 16 ページ。 Automatic instantaneous type water heaters
AquaStar 125B NG にも：据付・取扱説明書 (17 ページ)

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The flue connection for the AquaStar 125B is 5 inches.

However, in Canada, for installations at high altitude (2000-

4500 feet above sea level) a six inch flue is required. A 5"

by 6" flue adaptor must be affixed to the flue collar of the

AquaStar with at least two screws. See figure 3

Fig. 3 - Flue Adaptor for High Altitude Installations

WARNING: Failure TO INCREASE THE VENT SIZE TO

SIX INCHES AND/or assure that the manifold pressure is

set to proper value listed for applications at high altitudes

will cause unsafe venting, asphyxiation, and will void IAS

Certification.

GAS CONNECTIONS and Gas Regulator

Before connecting the gas supply, check the rating plate

on the right side of the front cover to be sure that the heater

is rated for the same gas to which it will be connected.

In the United States: The installation must conform with

local codes or, in the absence of local codes, the National

Fuel Gas Code ANSI Z223.1/NFPA 54.

In Canada: The Installation should conform with CGA B149

INSTALLATION CODES and /or local installation codes.

NOTE: The Aquastar 125 B is supplied with a gas

pressure regulator that must be installed on the heater

before attaching the gas supply line. See figure 4.

Failure to install the gas regulator as shown in figure

4 will be a violation of IAS certification of the unit.

The regulator supplied with the heater is preset for

the gas shown on the rating plate to the correct

pressure. It is an appliance level regulator designed

for (low inlet) pressure (less than 1/2 Psig or 15" W.C.)

DO NOT connect to an unregulated or high pressure

propane line or to a high pressure commercial natural

gas line.

Fig. 4 - Installation of Gas Pressure Regulator

The pressure regulator provided with the heater is adjusted

to deliver the proper gas pressure (as indicated on the

rating plate and in the manual for altitude up to 2000 feet

5" X 6" ADAPTOR

USED ON HIGH ALTITUDE

GAS INLET PIPE

PRESSURE TAP

PRESSURE REGULATOR

(660 meters) above sea level. On appliances being

installed above 2000 ft (660 meters) elevation, the inlet

gas pressure should be set at installation to the value

shown below.

NOTE: The gas pressures specified below refer to

pressures taken at the test pressure nipple on the gas

inlet pipe just above the regulator (See Fig 4). These

readings should be taken while the heater is operating

at full input — i.e. maximum water flow with the

temperature dial selector turned all the way clockwise.

MAXIMUM INLET GAS FLOW PRESSURE SETTING

Altitude

Natural Gas

inches W.C:

0' - 2.000 ft

2.000 ft - 4.500 ft

Above 4.500 ft consult your local gas supplier.

GAS LINE SIZE

It is strongly recommended that the natural gas pipe line

be 3/4" for the entire distance. If the maximum length is

above 40 feet, use 1" line. Flexible tubing is NOT

recommended, but if it is to be used, oversize it. With LP

gas installation, the recommended sizes are 5/8" up to a

maximum of 20 feet distance, 3/4" up to 50 ft distance

and 7/8" up to 100 feet.

National Fuel Gas Code requires that a sediment trap (drip

leg) be installed on gas appliances not so equipped. The

drip leg must be accessible and not subject to freezing

conditions. Install in accordance with the recommendations

of the serving gas supplier.

WARNING: The heater must be disconnected from the

gas supply piping system during any pressure testing of

that system at test pressures in excess of 0.5 psig.

The water heater must be isolated from the gas supply

piping system by closing the manual shutoff valve during

any pressure testing of the gas supply piping system at

test pressures equal to or less than 0.5 psig.

The water heater, including the pressure regulator provided

with it, must not be operated at gas supply pressures in

excess of 0.5 psig. If overpressure has occurred, such as

through improper testing of the gas lines or emergency

malfunction of the supply system, the gas valve and

regulator must be checked for safe operation. Make sure

that the regulator vent is protected against blockage. Vent

blockage could occur during ice storms.

When your connections are made, check for gas leaks at

all joints (not just the ones you made). Apply some soapy

water to all gas fittings and gas valve. Soap bubbles are

a sign of a leak.

NOTE: Do not apply soap solution to pilot filter screen or

pilot orifice area. If you have a leak, shut off the gas. After

verifying that required gaskets are in place, tighten

appropriate fittings to stop leak. Turn the gas on and check

again with a soapy solution. Never test for gas leaks

using a match or flame.

Liquid Propane

inches W.C:

5.7"

10.5"

4.6"

8.4"