AquaStar 125HX NG, 125HX LP specifications Interior Components Diagram Parts List 125 HX

Page 19

Fig. 15

INTERIOR COMPONENTS DIAGRAM

AND PARTS LIST 125 HX

1

Cover

8 705 421 752

 

2

Temperature adjustment knob

8 702 000 111

 

3

Temperature adjustment collar

8 700 403 008

 

4

Draft diverter

8 705 505 354

 

5

Heat exchanger

8 705 406 235

 

7

Main burner

8 708 120 298

NG

7

Main burner

8 708 120 296

LP

8

Burner assembly washer

8 710 103 060

 

9

Throttle disc

8 700 100 174

LP

10

Pilot burner

8 708 105 491

LP

10

Pilot burner

8 718 105 051

NG

11

Pilot electrode

8 708 107 006

 

12

Pilot orifice

8 708 200 069

NG

12

Pilot orifice

8 708 200 312

LP

13

Pilot tube

8 700 707 370

 

14

Washer pilot tube

8 700 103 173

 

15

Gas valve

8 707 011 917

NG

15

Gas valve

8 707 011 945

LP

16

Diaphragm switch

8 708 504 021

NG

16

Diaphragm switch

8 708 504 049

LP

17

Pilot electrovalve

8 708 501 249

 

18

Burner electrovalve

8 708 501 250

 

19

O-ring

8 700 205 023

 

20

Hydro-generator

8 707 406 043

 

21

Cold water pipe

8 700 705 947

 

22

Outlet flex hose

8 700 703 139

 

23

Washer

8 700 103 658

 

24

Water valve

8 707 002 649

 

25

Water valve cover

8 705 500 101

 

26

Diaphragm

8 700 503 053

 

27

Water inlet filter

8 700 507 001

 

28

Water valve selector screw

8 708 500 289

 

29

Volumetric water governor

8 705 705 009

 

30

Venturi

8 708 205 279

 

31

Electronic control box

8 707 207 085

 

32

Flame sensor cable

8 704 404 040

 

33

Electrode cable

8 704 404 039

 

34

Flue Gas Sensor

8 707 206 345

 

35

Set of cables

8 704 404 038

 

36

Pushrod

8 700 306 114

 

37

O-ring

8 700 205 120

 

38

O-ring

8 700 205 119

 

39

Water connection gasket

8 710 103 043

 

40

Water elbow fitting

8 700 703 114

 

41

Overheat sensor (ECO)

8 707 206 040

 

42

Connecting pipe hot

8 700 715 178

 

43

Washer

8 710 103 045

 

44

Flame sensor

8 708 107 007

 

45

Water valve set screw

8 703 401 051

 

6 720 606 804

19

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Contents Table of Contents For Your SafetyWhat to do if YOU Smell GAS 720 606 Required Natural Gas Pressure at inlet FeaturesUnpacking the 125 HX Heater Principle of OperationModel 125HX General Rules to Follow For Safe Operation Proper Location for Installing Your HeaterCombustion AIR Requirements Mounting InstallationClearances Plasterboard, can cause failure of mounting VentingVent pipe connection Existing Interior Masonry Chimney Masonry ChimneysTile Lined Interior Masonry Chimney GAS Line Sizing GAS Connections6 Adaptor Used on High Altitude For LP GAS For Natural GASSource National Fuel Gas Code Nfpa 54, Ansi Z223.1 Operating Instructions Water ConnectionsLighting and Operating Instructions Setting the Water TemperatureTo Turn OFF GAS to Appliance Not enlarge the orifice Maintenance and ServiceTrouble Shooting Review Maintenance Table on the Back of this ManualNo Spark AT the Pilot Water is TOO HOT Ground water temperature is very warmPilot Lights but Burners will not Come on Main Burners GO OUT During HOT Water USEHOT Water Temperature Fluctuates / Unit Deactivated Diagram of 125 HX Interior Components Diagram and Parts List Interior Components Diagram Parts List 125 HX Flow chart of 125 HX General Twelve Year Limited Warranty720 606 720 606 BBT North America Maintenance Table see

125HX LP, 125HX NG specifications

The AquaStar 125HX NG and 125HX LP are highly efficient gas tankless water heaters designed to meet the demands of modern households. With their compact size and advanced technology, these units provide an endless supply of hot water while maintaining energy efficiency. Both models cater to natural gas and propane applications, making them versatile options for various installations.

One of the standout features of the AquaStar 125HX series is its ability to deliver a powerful output of up to 199,000 BTUs, ensuring that multiple hot water outlets can operate simultaneously without a drop in temperature. Users can enjoy the convenience of hot showers, laundry, and dishwashing all at once, making it an ideal choice for busy families or households with high hot water needs.

These models incorporate a sophisticated modulating gas valve that adjusts the gas flow based on the demand for hot water. This technology not only optimizes energy consumption but also contributes to extended unit life by minimizing wear and tear on the components. The AquaStar 125HX units also come equipped with a patented electronic ignition system, which eliminates the need for a standing pilot light and reduces gas consumption.

Furthermore, the AquaStar 125HX NG and 125HX LP feature a durable heat exchanger constructed from high-grade copper, which enhances thermal efficiency and prevents corrosion. This ensures a longer lifespan and increased reliability for homeowners. Additionally, the units are compact and wall-mounted, allowing for flexible installation in various spaces, including tight utility closets or outside walls.

Safety is also a top priority, with built-in overheat protection and a freeze protection feature that ensures the unit remains operational even in colder climates. The AquaStar 125HX series operates quietly, allowing users to enjoy the benefits of hot water without the disruptive noise commonly associated with traditional water heaters.

In summary, the AquaStar 125HX NG and 125HX LP are leading choices in the tankless water heater market, combining efficiency, reliability, and innovation. Their impressive output, advanced technologies, and compact design make them suitable for modern living, ensuring homeowners have access to hot water whenever they need it. With these features, AquaStar continues to set a high standard in water heating solutions.
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