Bosch WR430-7K - Manuel (Page 2)

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Water Connection 1/2” Thread fitting
H x W x D 29 3/4” x 18 1/4” x 8 3/4”
Vent 4” (Category III Gas Appliance)
Max. lineal vent pipe length 15" (4.5m)
Gas Connection 1/2” NPT thread
Minimum recommended house supply pressure 40 Psi
Warm position minimum water pressure 18 psi (no fittings)
Hot position minimum water pressure13 psi (no fittings)
Max. Water Pressure 150 Psi
Shipping Weight 55 Lbs
Net Weight 44 LB
2.5 GPM at 90° rise (32°C) (9.5 l)
5.0 GPM at 45° rise (16°C) (19.5 l)
Min. Water Flow 1/2 gal/min
120V/60Hz 1.2 Amps
LP GAS Supply Pressure inlet. min. 11”W.C.*
LP GAS regulator outlet pressure 9.9”W.C.*
Natural Gas Pressure inlet min.: 7”W.C.*
Natural Gas Regulator Pressure 5.38 W.C.**
* Inlet gas pressure must not exceed this value
** For purposes of input adjustment
ELECTRICAL 3 ft. ( 0.9 m) power cable supplied c/w CSA
3 prong plug.
UNPACKING THE BOSCH WR430-7K 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. Do not lose this manual
as there is a charge for replacement.
BOSCH WR430-7K
Principle of Operation:
When a hot water faucet is opened, the flow of water 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 that the pilot has been lighted
and allows burners to ignite. The pilot goes out. The power
exhaust system runs as long as the burners are on. 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, followed immediately by the exhaust
system. Your hot water faucet is an ignition key to turn on
the water heater, giving you control over your hot water energy
use. Every time you turn off your hot water faucet, the energy
consumption for hot water returns to zero.
FEATURES
- Power Venting with safety shutoff
- Electronic Pilot Ignition
- On/Off switch to activate system
- 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 over heating protection shut-off sensor.
- Stainless steel burners with stabilized blue flame.
- Built-in corrosion resistant power venter.
- Compact space saver: mounts on a wall with two hooks.
- Easily removable one-piece cover.
- Easy one person installation.
- Adjustable water flow restrictor ensure that water flow
demand will not exceed the heating capacity of the heater.
NAT. GAS PROPANE
max. 130 000 Btu/hr 125 000 Btu/hr
Gas Input
min. 28 000 Btu/hr 28 000 Btu/hr