Bosch 38B LP Specifications

WARNING: Improper installation,adjustment, alteration, service or maintenance can causeinjury or property damage. Refer to this manual. Forassistanc

10 6 720 606 446Connecting the pressure relief valve (PRV)A listed pressure relief valve supplied with the heater mustbe installed at the time of inst

116 720 606 446LIGHTING INSTRUCTIONS (as seen on front coverof heater)1. STOP! Read the safety information on the front panel ofthe heater.2. The Gas

12 6 720 606 446Fig. 6 - Water Flow Control KnobThe position you select on the temperature adjustment knobwill depend on the temperature of the incomi

136 720 606 446PILOT DOES NOT LIGHT1. No gas to the AquastarA. Gas cock on gas line may not be open.B. Gas valve button has not been moved to “PILOTPO

14 6 720 606 446BURNERS DO NOT IGNITE WHEN HOT WATER IS TURNEDON1. Pilot is not on.Light the pilot. See lighting instructions.2. Pilot lighting push b

156 720 606 4464. Btu input is too low due to insufficient gas supplyMake sure your main gas line is fully opened. If using LPgas, be sure that the si

16 6 720 606 446Fig. 9 - Diagram of AquaStar 38 B 2 4 810 17911 1. Heat exchanger 2. Pilot assembly 3. Burner manifold gaspressure test nipple 4

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18 6 720 606 446Fig. 10 - INTERIOR COMPONENTS DIAGRAM AND PARTS LIST

196 720 606 446Fig. 10INTERIOR COMPONENTS DIAGRAMAND PARTS LIST 38B1 Cover 8 705 421 0212 Temperature adjustment knob 8 702 000 1824 Draft dive

2 6 720 606 446This well engineered, gas water heater has all the fea-tures a water heater should have:It operates on the principle of heating water i

20 6 720 606 446Fig. 11 - Flow chart of Aquastar 38 B

216 720 606 446LIMITED WARRANTYAquastarGeneralAquastar water heaters are warranted by the Manufacturer(BOSCH) through BBT North America. BBT North Ame

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Bosch HeatingSystem Co. Foschan GuangdongC. T. 528315 P.R. ChinaRecycled paper31&21segapeesELBATECNANETNIAMRAEYYREVESRAEY2YREVESRAEY5-3YREVEEVLAVR

36 720 606 446MINIMUM INSTALLATION CLEARANCES FROM COMBUSTIBLE ANDNON COMBUSTIBLE MATERIALSFRONT VIEWSIDE VIEWAQUASTAR MODEL 38BMODEL 38BTOP (A) 12 &q

4 6 720 606 446GENERAL RULES TO FOLLOWFOR SAFE OPERATION1. You should follow these instructions when you install yourheater. In the United States: Th

56 720 606 446COMBUSTION AIR REQUIREMENTThe AquaStar water heater holds cold water in its copperheat exchanger and brass water valve when not in use.B

6 6 720 606 446Appliances located in unconfined spaces:a) An unconfined space is one whose volume is greaterthan 50 cubic feet per 1000 Btu per hour o

76 720 606 446VENTINGVent pipe connection. WARNING: Do not reduce the vent pipe size.The heater must be vented to the outside following all local ord

8 6 720 606 446MASONRY CHIMNEY: Masonry chimneys shall be built and installed in accordance with NFPS 211 or local codes. Aminimum 4” diameter gas ve

96 720 606 446WARNINGNote: The burners of an instantaneous “on demand” waterheater such as the AquaStar are only on at the time thathot water is actua