Bosch AQUASTAR 125B LPL - Manual (Page 2)

2
This well engineered, gas water heater has been
specially designed to operate as a circulating water
heater.
FEATURES
- High Quality Materials for Long Working Life.
- Copper heating coils for endless supply of hot water.
- 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.
- Easy pilot flame lighting with push button piezo ignition.
AquaStar 125B LPL and 125B NGL Specifications
Gas Input max.: 117,000 Btu/hr
min.: 60,000 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 8 Psi at 1.8 GPM
Min. Water Pressure 18 Psi at 3.7 GPM
Max. Water Pressure 150 Psi
Shipping Weight 46 LB
Net Weight 44 LB
1.8 GPM at 90° rise
3.7 GPM at 45° rise
Min. Water Flow 1.8 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 8.
UNPACKING THE AQUASTAR HEATER
This heater is packed securely. The box includes two water connection fittings, 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.