HWHC2100 v2.53 Operation Manual
CONFIDENTIAL
21 Harbor Park Dr. N, Port Washington, NY 11050 Phone: 516.626.72211 Fax: 516.626.7201
14
In the AUTO mode, sign ‘:’ shows that the calculated Target Temperature is between the defined maximum and
minimum system hot water temperature limits. If calculated Target Temperature exceeds the maximum allowed limit,
the controller would set Target Temperature as MaxWaterTemp setpoint and change sign’:’ to sign’^’. If calculated
Target Temperature lower then allowed minimum limit –the controller would set the Target Temperature as
MinWaterTemp setpoint and change the sign’:’ to sign ‘_’.
•
The controller performs automotive adjustment valve position when it reaches the boarders (0% or 100%) during the
operation. On this procedure the controller ‘pushes’ the valve (certain amount of time) toward the open or the close
position. This situation is indicated on bottom line after ‘VLV ‘ by sign ‘_ ‘(when valve ‘pushes’ toward close position)
or ‘^’ ‘(when valve ‘pushes’ toward open position). When the procedure has completed the sign will change to ‘=’;
Mode of Operation: OFF
Mode of Operation: M_SET
SET: 180°
VLV = 67% ST = 123°
Target Temperature is 180F°
Normal operation, system
temperature is 123F°
•
For the motorized valve controlled by relays only
AUTO_140° Summer
VLV=0% ST=60°
Summer season. Valve is
closed. System Temperature is
60°F.
OFF :
OFF :
OFF: Sync_C
•
VLV=42% ST=144°
VLV=42% ST = fail
101sec ST=fail
Motorized valve stops on
position 42% open. The pump
state remains unchanged.
System Temperature is 144F°
System Temperature Sensor
fail. Motorized valve stops on
position 42% open. The pump
state remains unchanged.
Initial Synchronization. Valve
is going to be close.
101seconds remain to finish
synchronization. ST sensor
fail.
SET: 168° FailSf
VLV = 67% ST = fail
System Temperature Sensor fails.
The valve would transition into
the close position. The automotive
adjustment valve position would
perform. The motor would stop,
and after a short period of time the
valve would transition into open
position at 60%. The motor would
stop and the valve would remain
on this position until the issue is
resolved.
SET:166° Sync_C
•
168sec ST=80°
Initial Synchronization. Valve
is going to be close. Target
Temperature is 166°F.
168 seconds remain to finish
synchronization.
System Temperature is 80°F.
