BFit BFITW 1000, Инструкция по установке, эксплуатации и обслуживанию

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IX. Water Piping
The BFIT water heater is considered to be a circulating
water heater or hot water supply boiler. This Product will
operate most efficiently and reliably when paired with one
or more storage tanks.
A. General Piping Guidelines
Suggested piping configurations are shown in diagram
form in section "X. Water Piping Diagrams". The fol -
lowing steps are general guidelines for installing the
BFIT water heater in a hot water supply system. The
installer is responsible for complying with local codes.
1. The cold water return line shall be connected
to the inlet of the appliance labeled "cold water
connection"
2. The hot water supply line shall be connected to
the outlet manifold of the appliance shown in
Figure 12 .
3. The system cold water supply line shall include a
backflow preventer/check valve and properly sized
expansion tank for the capacity of the system.
4. A drain valve should be installed at the lowest point
in the system
5. The BFIT is a condensing appliance. The return
water and cold water supply should be piped to
the primary loop going into the appliance.
6. Circulation pump must be installed in the primary
piping between the tank and the water heater.
B. Factory Supplied Outlet Water Manifold
1. A temperature and pressure relief valve is included
with every BFIT water heater. If the Relief valve is
shipped loose, install it to the outlet manifold as
shown in Figure 12 .
2. When piping the appliance to the system, do not
install an elbow closer than 5 pipe diameters from
the flow switch.
3. When adapting the grooved outlet to the system
piping, use a coupling that conforms to local codes
and ordinances. Victaulic 107N couplings are
available from factory.
NOTICE NOTICE
Failure to properly pipe appliance may result in
improper operation and damage.
Install the appliance so that the gas ignition system
components are protected from water (dripping,
spraying, rain, etc.) during appliance operation and
service (circulatory replacement, cleaning, etc.).
Contamination of the water by corrosive chemicals
will cause corrosion of the steel components, and
can lead to appliance failure. Bryan Steam’ Stan -
dard Warranty does not cover problems caused
by contamination of supply water.
Installation is not complete unless a safety relief
valve is installed in the outlet manifold of the appli -
ance or the hot water piping shortly downstream
of the appliance.
Failure to maintain the flow through the appliance
within the specified limits could result in erratic
operation or premature failure.
The circulator shall be sized properly based on the
pressure drop of the entire loop and the desired
temperature rise.
Maintain 1” (24mm) clearance around all uninsu -
lated hot water pipes. The piping going into the
cold water inlet of the appliance can still be hot
from circulating the water in the tank.
Figure 12: Hot Water Outlet Manifold
T&P Relief Valve
T&P Gauge
Water Flow Switch
Low Water Cut Off