User Guide

16
PN 240010923 Rev. F [07/01/2018]
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The main controller is equipped with three
independent, isolated, dry contact end switches
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End switches can be assigned to any zone and will
close on a call for heating. End switch assignment is
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menu.
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XX-2 are then designated as comfort heating zones.
End switch XX-3 is then designated as the priority
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allowed to operate until the priority time has expired
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The primary pump connection is located on the
master control and is to be connected to the boiler
pump.
Note: The primary pump may be connected to the boilers
temperature control however, features such as post purge and
primary pump active/inactive cannot be utilized.
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Pump
Valve Rϑ
open
open/closed
op/cl Rϑ open Rϑ
closed
open
on
open Rϑ
closed closed on
Valve on
open op/cl op/cl
Rϑ
open Rϑ
closed
open op/cl open Rϑ
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on
open Rϑ
=&19DF closed closed on
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&RQ¿JXUDWLRQ Input Output
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Pump
Pump Rϑ
open op/cl n/a Rϑ open Rϑ
closed op/cl n/a on closed on
Pump on
open op/cl n/a Rϑ open Rϑ
closed open n/a Rϑ open Rϑ
closed =&19DF n/a on closed on
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pump terminals
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primary pump will energize immediately.
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pump will energize when the end switch closes contact
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and wiring.
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Used for tank-less coil applications to delay zone and
primary pumps from energizing.
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pumps.
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