AquaStarメーカー38B NGの使用説明書/サービス説明書
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W ARNING : Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual. For assistance or additional information consult a qualified installer , service agency or the gas supplier .
2 This well engineered, gas water heater has all the fea- tures a water heater should have: It operates on the principle of heating water instantaneously “on demand”. When a hot water faucet is opened, cold water flows through the coils of the heat exchanger in the Aquastar .
3 If you are using the AquaStar for combined space heating and potable water heating (see schematic diagram below) , all piping and other components connected to the system must be suitable for potabl.
4 GENERAL RULES T O FOLLOW FOR SAFE OPERA TION 1. Y ou should follow these instructions when you install your heater . 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.
5 Appliances located in confined spaces:) The confined space must be provided with two permanent openings, one commencing within 12 inches of the top and one commencing within 12 inches of the bottom of the enclosure. Each opening must have a minimum free area of one square inch per: - 1000 Btu/hr if all air is taken from inside the building.
6 W ARNING Note: The burners of an instantaneous “on demand” water heater such as the AquaStar are only on at the time that hot water is actually being used, the venting stack is therefore cold ex.
7 Fig. 3 - W ater valve, top view Connecting the pressure relief valve (PRV) A listed pressure relief valve supplied with the heater must be installed at the time of installation. Should a discharge line be added to the PRV no valve is to be placed between the PRV and the heater .
8 Fig. 6 - W ater Flow Control Knob What is the best temperature setting? Because AquaStar water heaters deliver endless hot water at the temperature you have selected, there is no need to produce very hot water and then mix in cold. It just does not make sense to overheat water and then mix in cold to cool it off.
9 Fig. 8 - Pilot burner with air screen/ pilot orifice Fig. 7 - Characteristic Pilot Flame MAINTENANCE AND SERVICE Approximately once a year , the AquaStar should be checked, cleaned and serviced as necessary .
10 TROUBLE SHOOTING Introduction The AquaStar 38 burners are ignited by a water flow valve. Numerous water related problems can cause this water valve to malfunction such as: Insufficient water flow v.
11 BURNERS DO NOT IGNITE WHEN HOT W A TER IS TURNED ON 1. Pilot is not on. Light the pilot. See lighting instructions. 2. Pilot lighting push button not turned to proper position Be sure that once the pilot flame is on, that the gas valve button ( ) is slid all the way to the right to the ON position ( ).
12 heaters, the burners of a tankless water heater must be very powerful to heat water instantaneously since they do this only at the time hot water is actually being used. It is therefore imperative that the gas pressure requirement be met exactly . Insufficient gas pressure will directly af fect the water temperature at the time of usage.
13 Fig. 9 - Diagram of AquaStar 38 B 2 4 8 10 1 7 9 11 1. Heat exchanger 2. Pilot assembly 3. Burner manifold gas pressure test nipple 4. Pilot gas tubing 5. Main gas burner 6. Inlet gas pressure test nipple 7. Gas valve 8. Gas control slide 9. Piezo igniter 10.
Fig. 10 - INTERIOR COMPONENTS DIAGRAM AND P ARTS LIST.
Fig. 10 INTERIOR COMPONENTS DIAGRAM AND P ARTS LIST 38B 1 Cover ¤ 8 705 421 021 2 T emperature adjustment knob ¤ 8 702 000 182 3 Panel back ¤ 8 705 402 170 4 Draft divertor ¤ 8 705 505 361 5 Heat .
GA S LINE SIZE Natural Gas Nominal Iron Pipe Size* 3/8" 1/2" MAXIMUM LENGT H 20' 80' Liquid Pr opane Semi-rigid Tubing 3/8" 1/2" MAXIMUM LENGT H 10' 60' * Flex tubi ng gr eatly r educes capacity and, therefore, is not r ecommended.
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AquaStar 38B NGをまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはAquaStar 38B NGの技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。AquaStar 38B NGの取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。AquaStar 38B NGで得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
AquaStar 38B NGを既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はAquaStar 38B NGの不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、AquaStar 38B NGに関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちAquaStar 38B NGデバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。