Principle of Operation:
When a hot water faucet is opened, the water flow through the heater causes the gas valve to open. At the same time the
FEATURES
-Electronic Pilot Ignition driven by
-High Quality Materials for Long Working Life.
-Copper heating coils for endless supply of hot water.
-Burner output proportional to hot water flow demand for maximum energy efficiency.
-Safety flame sensor at pilot burner.
-Automatic overheating protection
-Temperature limiter.
-Flue gas safety device.
-Stainless steel burners with stabilized blue flame.
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-Compact space saver: mounts on a wall with two hooks.
-Easily removable
-Easy one person installation.
-Adjustable water flow restrictor to ensure that water flow demand will not exceed the heating capacity of the heater.
-On/Off Switch to activate system.
-Red LED indicator flashes with low water pressure.
-Green LED indicator main burner condition.
BOSCH is constantly improving our products, therefore specifications are subject to change without prior notice.
AquaStar 125HX LP and 125HX NG Specifications
Gas Input max.: 117,000 Btu/hr min.: 28,000 Btu/hr
Water Connection ½” Thread fitting NPT
H x W x D 29 3/4” x 18 1/4” x 8 3/4"
Vent 5”
Gas Connection 1/2” NPT thread
Min. Water Pressure 18 Psi at 4 GPM
Max. Water Pressure 150 Psi
Shipping Weight 43 LB
Net Weight 40 LB
1.8GPM at 90° rise
3.7GPM at 45° rise
Min. Water Flow 1/2 gal/min
LP GAS Supply Pressure
(before Aquastar regulator) min. 11” W.C. max. 14” W.C.*
Required LP GAS Pressure at inlet
tap while Aquastar is operating: 10.5” W.C.
LP GAS Burner Manifold pressure while Aquastar is
operating at maximum input: | 9.0” W.C. |
Natural Gas Supply Pressure
(before Aquastar regulator) min.: 7” W.C. max.: 14” W.C.*
Required Natural Gas Pressure at inlet tap while Aquastar is operating: 5.7” W.C.
Natural Gas Burner Manifold Pressure while Aquastar is
operating at maximum input: | 4.2” W.C. |
*Inlet gas pressure before Aquastar regulator must not exceed this value. Pressure may need to be adjusted for high altitudes, see page 7.
UNPACKING THE AQUASTAR HEATER
This heater is packed securely. The box includes two water connection fittings, a control knob, a gas pressure regulator, a pressure relief valve, an incandescent particle tray, two hooks for hanging the heater, this manual, a personal letter, a warranty statement and a warranty registration card. Do not lose this manual, as there is a charge for replacement. Please complete and return the enclosed warranty registration card.
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