Water Connections; Safety Before Lighting The Pilot - Bosch 125B LP Installation And Operating Instructions Manual

WATER CONNECTIONS

When facing the heater, the cold water inlet is on your right
and the hot water outlet is on your left.
Although water piping throughout your structure may be
other than copper, we recommend that copper piping be
used for at least three feet before and after the heater (follow
local codes if more stringent). Keep water inlet pipe to no
less than 1/2 inch diameter to allow the full flow capacity.
Remember that water pressure must be sufficient to activate
the heater when drawing hot water from the top floor. If the
hot and cold connections to the heater are reversed, the
heater will not function. The AquaStar 125B is provided with
two flexible type connectors that must be connected to the
inlet and outlet fittings of the water valve as shown in Figs
5 and 6. ½" Copper or brass fittings work best when
connected to the connectors. See Fig 6. These connectors
seal to the water valve by means of a union connection
with a washer type gasket at the joint. No pipe dope or
thread tape is to be used at these joints. Be certain there
are no loose particles or dirt in the piping. Blow out or flush
the lines before connecting to the AquaStar. Full port valves
should be installed on both the cold water feed line and the
hot water outlet line to facilitate servicing the heater.
For installation on a private well system, be sure that the
water pressure is set between 30 and 50 psi.
INLET
FLEX
CONNECTORS
OUTLET
Fig. 5 - Water
connectors, top view
THREADED ASSEMBLY
1/2" FLEX
PIPE PRV TO
PIPE PRV TO
APPROPRIATE
APPROPRIATE
DISCHARGE
DISCHARGE
Fig. 6 - Plumbing connections for the Aquastar 125B
Connecting the pressure relief valve (PRV)
A listed pressure relief valve supplied with the heater must
be installed at the time of installation. No valve is to be
placed between the PRV and the heater. No reducing
coupling or other restriction may be installed in the discharge
line. The discharge line must be installed such that it allows
complete drainage of both the PRV and the line. The location
of the PRV must be readily accessible for servicing or
WASHER
WATER FILTER
WATER VALVE
WASHER
valve and water
SWEATED ASSEMBLY
1/2" FLEX
PIPE PRV TO
APPROPRIATE
DISCHARGE
replacement, and be mounted as close to the water heater
as possible. See Fig 7.
To install the PRV, a suitable fitting connected to an
extension on a "T" fitting can be sweated to the hot water
line.
Fig. 7 - Pressure Relief Valve
OPERATING INSTRUCTIONS
Before proceeding with the operation of the heater make
sure that the system is filled with water.
Open the cold water inlet supply to the heater fully.
Open a hot water faucet to permit the water to fill the heater
and the piping and to eliminate the air trapped in the system
Close the hot water faucet after the water flows freely and
all the air has escaped from the system. The water heater
is now ready to operate.
FOR YOUR SAFETY READ BEFORE
LIGHTING THE PILOT
Warning: If you do not follow these instructions
exactly, a fire or explosion may result causing property
damage, personal injury or loss of life.
A. This appliance has a piezo-igniter for lighting the pilot
burner. When lighting the pilot, follow these instructions
exactly.
B. BEFORE LIGHTING smell all around the appliance area
for gas. Be sure to smell next to the floor because some
gas is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
S FITTING
- Do not try to light any appliance.
- Do not touch any electric switch; do not use any phone
in your building
- Immediately call your gas supplier from a neighbor's
phone. Follow the gas supplier's instructions.
- If you cannot reach your gas supplier, call the fire
department.
C. Use only your hand to push in or turn the gas control
buttons. Never use tools. If a button will not push in, check
to make sure the buttons are being pushed in the proper
sequence. Follow these instructions exactly. If control
button(s) are jammed, close the gas supply and call a
qualified service technician. Attempted forceful repair may
result in a fire or explosion.
D. Do not use this appliance if any part has been under
water. Immediately call a qualified service technician to
inspect the appliance and to replace any part of the control
system and any gas control which has been under water.
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