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. This same flow opens the gas valve, and the
burners are ignited by the pilot flame. The heat exchanger
coils absorb the heat generated by the burners and trans-
fer 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 turn on
the water heater, giving you control over your hot water
energy use. Each time you turn off your hot water faucet,
you also shut off the water heater.
FEATURES
- 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 thermocouple 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.
- Easy pilot flame lighting with push button piezo ignition.
AquaStar 125B LP and 125B 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 42 LB
Net Weight 39 LB
1.8 GPM at 90° rise
3.7 GPM at 45° rise
Min. Water Flow 1/2 gal/min
LP GAS Supply Pressure inlet. min. 11” W.C.
max. 14” W.C.*
LP GAS Manifold pressure 9.0” W.C.**
Natural Gas Pressure inlet min.: 7” W.C.
max.: 14” W.C.*
Natural Gas Manifold Pressure 4.2 W.C.**
* Inlet gas pressure must not exceed this value
** For purposes of input adjustment
UNPACKING THE AQUASTAR HEATER
This heater is packed securely. The box includes two water connection fittings, a gas pressure regulator, 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.