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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 a microswitch is activated which sends a spark to the
pilot. The flame sensor confirms the pilot has been lighted
and allows the first two burners to come on. The flame
sensor confirms correct activation and all burners come
on. The pilot goes off. The heat exchanger coils absorb
the heat generated by the burners and transfer heat to the
water. When the hot water faucet is shut off, the gas valve
automatically closes and the burners turn off. Your hot
water faucet is an ignition key to activate the water heater,
giving you control over your hot water energy use. Every
time you turn off your hot water faucet, the energy
consumption of your hot water returns to zero.
FEATURES
- Electronic Pilot Ignition
- 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 shut-off sensor.
- Stainless steel burners with stabilized blue flame.
- Built-in corrosion resistant draft inducer.
- Compact space saver: mounts on a wall with two hooks.
- Easily removable one-piece cover.
- Easy one person installation.
- Adjustable water flow restrictor to ensure that water flow
demand will not exceed the heating capacity of the
heater.
- Electronic Pilot Ignition
- Safety Flame Sensor at pilot burner (not thermocouple)
- On/Off Switch to activate system
- LED indicator flashes before battery needs replacement
AquaStar 125X LP and 125X NG Specifications
Gas Input max.: 117,000 Btu/hr
min.: 28,000 Btu/hr
Water Connection 1/2” Thread fitting
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
1.8 GPM at 90
°
rise
3.7 GPM 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 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.