HPSR10*
5
33-00331EF—08
Boiler Controls
Hydronic Panels are capable of managing boilers with DHW priority. The panel features two isolated end switches labeled
Boiler and End Switch for TT outputs to the boiler. Two slide switches are available to provide simple programing of the
end switches to meet the desired application. See the operational matrix below detailing functionality of the switches.
Additionally, this panel features a LOW LIMIT input which must be closed for pumps to be activated. This input comes
with a factory installed jumper for cold start boiler operation when the controlling Aquastat has a HIGH LIMIT only. If the
installed boiler requires warm up time then this jumper should be removed and wired to the boiler.
Fig. 11.
Fig. 12.
Fig. 13.
T-STAT
CALL
STATUS OF
ZR/ZC
CLOSED
BOILER RELAY=ON
END SWITCH=ON
ZONE PUMP=OFF
OPEN
NO PRIORITY ZONE OR PRIORITY END SWITCH
BOILER RELAY=ON
END SWITCH=ON
ZONE PUMP=ON
M37144
T-STAT
CALL
STATUS OF
ZR/ZC
OPEN
BOILER RELAY = ON
END SWITCH = ON
ZONE PUMP = ON
IS THIS THE
PRIORITY ZONE?
DEACTIVATE ALL
OTHER ZONES
YES
IS PRIORITY
ACTIVE?
NO
NO
WAIT FOR
PRIORITY ZONE
TO SATISFY
YES
CLOSED
PRIORITY ZONE, NO PRIORITY END SWITCH
M37145
BOILER RELAY = ON
END SWITCH = ON
ZONE PUMP = OFF
M37146
T-STAT
CALL
STATUS OF
ZR/ZC
CLOSED
BOILER RELAY = ON
END SWITCH = ON
ZONE PUMP = ON
IS THIS THE
PRIORITY ZONE?
DEACTIVATE ALL
OTHER ZONES
YES
IS PRIORITY
ACTIVE?
NO
NO
WAIT FOR
PRIORITY ZONE
TO SATISFY
YES
STATUS OF
ZR/ZC
CLOSED
OPEN
OPEN
PRIORITY ZONE, PRIORITY END SWITCH
BOILER RELAY = ON
END SWITCH = ON
ZONE PUMP = OFF
BOILER RELAY = ON
END SWITCH = OFF
ZONE PUMP = ON
BOILER RELAY = ON
END SWITCH = OFF
ZONE PUMP = OFF
