Bosch's heat exchanger is so well built, it's backed by the longest protection plan you can find -
15 years. Bosch delivers years of trouble free performance. It can be the last water heater you ever buy.
The pilotless
Bosch Model 425 HNL
Bosch has developed
a new, patented hydro-generator ignition system that requires no standing pilot,
electricity or batteries. When water flows through the 425 HN's hydro generator
it spins a tiny turbine which produces the spark required to light the burner.
All other specifications are the same as the Model 425 PNL.
New!
We will soon be
offering the Rinnai direct vented tankless hot water heater. This is a power
vented model, similar to the Bosch 425 EFL, but it uses outside air for
combustion. A very nice unit. Call for details.
The
Bosch ProTankless gas hot water heater is one of the most efficient ways to heat water
available today. This rugged compact unit will pay for itself in about five years with the LP gas saved from not using a conventional hot water heater. The
Bosch is wall hung (a fire-proof wall is not needed) - a cellar chimney is the most likely place to hang it. It requires open space to the front, 6" clearance on either side and 12" clearance to the ceiling. It is plumbed with 1/2" copper pipe for water inlet and outlet and requires at least a 5/8'
diameter LP gas pipe. (Model 425)
The Bosch also requires a 5" vent pipe easily adaptable to 6". This vent should be thought of as the same type of vent necessary for a wood stove - not simply a 5" diameter pipe leading horizontally to the outside. The Model
425 HN requires a 5" diameter "B" type vent at least 11' high. The Model 425 EF
comes complete with its vent hood to the outside, but needs 4" single wall
stainless or galvanized pipe from the unit to vent hood.
We have sold many tankless water
LP gas water heaters locally and our neighbors love them. Their economic operation and endless supply of hot water make the
Bosch a favorite with everyone!
BOSCH ProTankless Water Heater
l Efficient and inexpensive to operate
l Heats water only as you use it
l Designed to last a lifetime
l Will not corrode and leak
l Never runs out of hot water
l Compact, wall hung, uses no floor space
l Mineral scaling buildup reduces efficiency
l Wastes energy with constant standby heat loss
l Mineral scaling destroys tank lining
l Corrodes and springs leaks
l Runs out of hot water
l Requires tank for water storage
| 901-006 | Bosch
Model 260 PNL | $489 |
| 901-001 | Bosch
Model 425 PNL | $829 |
125,000 BTUs is the most common size.
901-003 Bosch Model 425 HNL
$889
Pilotless. Not available in 'S' model
901-004 Bosch Model
425 EFL $1099
Includes Power Vent with built in wiring.
901-007 Bosch Model 635 ESL
$1339
This model is similar to the
425 HN above except that it is much larger at 165,000 BTU's. It will deliver 5 gpm, enough for two bathrooms at once. Call for details.
BOSCH water heaters deliver an endless supply of
hot water!
| SPECIFICATIONS | MODEL
425HN | MODEL 425 PN | MODEL
260 PN |
| Efficiency | 82% |
78% | 78% |
| Power BTU Input | 130,000 | 117,000 | 74,900 |
| | Thermostat-Variable | Thermostat-Variable | Thermostat-Variable |
| LP Gas Pressure | 11" W.C. | 11" W.C. | 11" W.C. |
| Natural Gas Pressure | 7" W.C. | 7" W.C. | 7" W.C. |
| Recovery Time | 126 gallons/hour | 126 gallons/hour | 39 gallons/hour |
| | 90o Temp. Rise | 90o Temp Rise | 90o
Temp. Rise |
|
Gallons per minute @
|
| 55ºF Temp. Rise (1050F) | 3.60
gpm | 3.60 gpm | 1.2 gpm |
| 65ºF Temp. Rise (1150F) | 2.80 gpm | 2.80 gpm | 0.9 gpm |
| 75ºF Temp. Rise (1250F) | 2.40 gpm | 2.40 gpm | 0.8 gpm |
| 90ºF Temp. Rise (1450F) | 2.00 gpm | 2.00 gpm | 0.6 gpm |
| Minimum Flow | 1/2 gpm | 0.6
gpm | 0.6 gpm |
| Vent Size | 5" Type B Gas | 5" Type B Gas | 4" Type B Gas |
| Water Connections | 1/2" NPT Male | 1/2" NPT Male | 1/2" NPT Male |
| Gas Connections | 1/2" NPT Male | 1/2" NPT Male | 1/2" NPT Male |
| Min. Water Pressure | 18* psi | 18* psi | 18* psi |
| Max. Water Pressure | 150 psi | 150 psi | 150 psi |
| Hgth x Wdth x Dpth | 29.75"x.
18.5"x 8.75" | 29.75"x 18.5"x 8.75" | 25 3/8"x 10 5/8"x 9 1/8" |
| Net Weight | 37
lbs | 37 lbs | 23 lbs |
| Shipping Weight | 44
lbs | 44 lbs | 25 lbs |
*While the minimum pressure is 18 psi, recommended pressure is 30
psi. However, with experience we know that the Bosch will work quite well on the 25
psi supplied by our Shurflo pumps.
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