Wiring; Special Control Systems - PENSOTTI DK2 Series Installation And User Manual

Pensotti Heatline Quatech Series

Wiring

All external wiring must conform to existing electrical codes laid down by the authorities having
jurisdiction.
In the United States this is generally the National Electrical Code, NFPA70.
In Canada, they are the C.S.A. Standard C22-1 and the Canadian Electrical Code. Electrical
connections should be carried out only by qualified persons according to the wiring diagrams
provided in this manual.
The boiler and burner should only be operated on 120 Vac.
For boilers with RIELLO burners, the connections must be made so that there is no crossing of the
neutral with the phase, a proper ground shall be provided and all three wires have to be connected
to the operating control.
Field connections should be properly sized, and protected with a minimum 15-amp fusetron or
circuit breaker.
Install a separate fused disconnect switch as required (or by code) so power can be shut off for
servicing.
Ground the boiler to the water piping or the main service ground.
Install the room thermostat or relocate the room thermostat away from cold drafts, air currents,
lamps, televisions or sunlight. Set the heat anticipator on the thermostat to match the operating
control. Connect the thermostat leads to the circulation pump operating control or aquastat as
applicable.
The Pensotti Heatline Quatech Series boiler should be equipped with a burner that includes a 15
second pre-purge control. This will ensure smooth, quiet starts and proper performance. Although
a post-purge period is not required, a one minute post-purge will make for better operation. The
use of a post-purge is recommended with mechanical draft systems and poorly designed or
antiquated venting systems.
The Pensotti Heatline Quatech Series is supplied with the control package ordered by your dealer.
Figure 5 shows the wiring to a Honeywell L7148 and should be wired.
Figure 6 shows the wiring for a heat only installation using the Carlin 90000B high limit
controller.
Figure 7 shows the identical installation for a powerventer application.
The wiring of a priority indirect with a Taco SR503 (or equiv.) is shown in Figure 8.

Special Control Systems

For special control systems such as multiple zones, multiple boiler installations, unit heaters,
radiant heating, etc. consult the respective control manual or contact PNA, Inc. for further
information.
13