Circulators - Smith 8 SERIES Installation & Operating Instructions Manual

Page 8
FILLING THE SYSTEM
Water
Fill the system slowly, while venting air and checking for
leaks. Do not operate the circulator until the system is
full. Run the circulator without fi ring the burner until all
air has been bled from the system.
When the relief valve is set to operate at 30 psi, the
initial fi ll pressure should be suffi cient to fi ll the system
to the high point and develop a pressure at that point
so as to prevent the water in the system from boiling
at the maximum operating temperature. Under normal
conditions, a static height of 18-1/2' will require an initial
fi ll pressure of 12 psi. If using the suggested piping
arrangements, see the system purging instructions with
the diagram.

CIRCULATORS

The Taco 007 and 0010 circulators are suitable for use on
a closed heating system with 30 psig maximum operating
pressure. If a circulator is furnished with the boiler does
not have the required capacity to serve the connected
load, provide an extra zone circulator or change the
circulator to the proper size. Capacity curves for the
circulators are provided in these instructions to permit the
sizes to be checked with the system requirements.
Graph 1
NOTE: The Taco 0010 circulator is rated for 125 psig
maximum operating pressure.
8 SERIES BOILER INSTALLATION AND OPERATING INSTRUCTIONS
A Special Note to Installers of Water Boiler: All Carlin
and Beckett burners, shipped separately under the
"Burner In The Box" program do not have a jumper wire
installed on the T-T terminals on the primary ignition
control. Water boilers require this jumper in order to
operate. On water boilers the thermostat is connected to
the aquastat relay, on a steam boiler the thermostat will
be connected to the T-T terminals on the primay ignition
control (see Figure No. 8).
Figure No. 8