Install Instructions
13
IX - SEQUENCE OF OPERATION
NOTE: The DPM-2 is designed to operate in conjunction with
several Argo controls via a ribbon cable but may also be used
with other manufacturers’ controls. The following assumes that
the application is a ribbon cable to a standard zone control.
The zone control and the associated boiler should be functioning
1.
properly in all respects prior to evaluating the DPM-2. Remove
the ribbon cable and verify proper system operation before
continuing.
Connect the DPM-2 to the zone control using the supplied ribbon
2.
cable in accordance with the wire diagram for your specic
application (See Section VIII of this manual for examples.)
With the DPM-2 “Power On” switch in the “On” position, there
3.
should be 24 VAC across the lower terminals labeled “24 VAC
and Common.”
The high limit control on the boiler should be set to a
4. higher
temperature than the “Max. Temp.” setting on the DPM-2. (See
Section VII for more information.)
The “Priority On” LED should be
5. on when the “Priority Zone”
terminals on the zone control are jumped. The small relay near
the LED should also be heard energizing.
When the DPM-2 “Reset On” LED is illuminated, the X-X relay
6.
on the zone control should be off. When the “Reset On” LED is
off, the X-X relay should be on only if a zone is calling for heat.