Instruction/ maintenance manual of the product 38B NG AquaStar
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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.
An important point after buying a device AquaStar 38B NG (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought AquaStar 38B NG yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data AquaStar 38B NG - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, AquaStar 38B NG you will learn all the available features of the product, as well as information on its operation. The information that you get AquaStar 38B NG will certainly help you make a decision on the purchase.
If you already are a holder of AquaStar 38B NG, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime AquaStar 38B NG.
However, one of the most important roles played by the user manual is to help in solving problems with AquaStar 38B NG. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device AquaStar 38B NG along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
