Harman Stove Company SF160 - Manual (Page 8)

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3 feet (0.9m) above the point at which they exit from the
roof, it must also extend 2 feet (0.6m) above the highest
point within a 10 ft. (3m) radius.
limit connector pipe to 8 ft. or less, with no more than two
elbows. all horizontal sections should have 1/4 in. rise per
foot. The chimney must be capable of providing a draft
reading of at least .06 in. of water column. a barometric
damper can be installed to prevent excessive and erratic
draft. all connector pipe should be secured with sheet metal
screws at each joint.
Installation
Plumbing
The Harman® Trident Boiler can be used as a “stand alone”
boiler or as an add-on to an existing hot water heating
system.
The diagrams in this manual are meant to show the
necessary equipment and piping. Your system may look
very different. However, if configured properly, the same
results will be achieved.
fig. 6 shows a typical plumbing diagram for tying into an
existing system. This method provides water circulation
between the two boilers with a circulating pump. In this
setup, the domestic water coil in the existing boiler will be
heated, making it unnecessary to install a water coil in the
Trident Boiler.
Tying-in to an existing boiler must be done in the return line
between the circulator and the existing boiler. Run a pipe
from there to a small circulator, and then into the 1-1/4 in.
fitting on the rear of the Trident Boiler. next run a pipe from
the 1-1/4 in. fitting on the top of the Trident Boiler to a Tee
fitting in the supply line of the existing boiler. This Tee fitting
must be installed between the existing boiler and the flow
Control Valve, as shown in fig. 6. an air valve should be
installed on this line.
FIG. 5
Air Valve
Notice:
The Aquastat controls supplied with the Trident Boiler
are designed only to maintain water temperature
within the boiler. The actual heating system is
controlled separately by your thermostat(s) opening
zone valves or energizing circulation pump(s).
Do not attach a thermostat to the supplied controls.
NOTE: The restriction of not venting more than one appliance
to the same flue applies to the U.S. specifically. In Canada,
Csa B365-01 allows it, with specific restrictions. Be sure to
contact your building code inspection official to see if this
option is allowed in your area, and to find out the specific
requirements for such an installation.
DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE
THAT IS SERVING ANOTHER APPLIANCE.
FIG. 6