A.O. Smith 101 Series User's Information Manual

24
CONFIGURATION SCREEN
“Comp HRS” – Compressor Hours: indicates the compressor
run time hours of each unit
“Pump %” - Percentage of envelope sent to pump via
communication connection.
“Pump Staging” - Percentage of pump envelope called
depending on how many heat pumps are running.
“Pump Testing” - Used to hold system at a specific % for
setting Pump Staging values.
“Tank Di Set” – Tank Di erential Setpoint: sets the minimum
tank temperature rise required to avoid calling another unit
“System Timer” – System Timer: sets the maximum time that
the tank has to achieve the Tank Di Set value to avoid calling
another unit
“TempDiff” – Temperature Difference: sets the difference
below the setpoint where the master will give a call for members
to run
“SAVE”button – Saves the“Tank Di Set”and“System Timer”
parameters
“Master IP Address” – IP Address used to connect panel to
BMS system
“Master IP Subnet” – subnet mask for address range IP is
con gured in
“Master IP Gateway” – IP Address for internet router on site
used to connect to unit via VPN
MASTE CONTOL PANEL SETUP TO
MEMBE UNITS
1. Hardwire all member units to individual power sources
rated for the equipment with disconnects
2. Hardwire the “Master Control Panel” to a 120V power supply
through the junction box
3. Hardwire each temperature probe into the junction box
for the Master Control Panel and then permanently attach
them to their respective tanks
4. Connect all of the member units to the router in the
junction box
5. Under the con guration screen press the “SEARCH FOR
UNITS” button to  nd all of the connected members (give
the master controls 2 minutes to  nd all of the member
units)
MASTE CONTOL UNIT CALL SEQUENCE
OF OPEATIONS
1. Set the “Tank Diff Set” value to 1°F and the “System
Timer” value to 300s (5min), then press save to update
the program
2. Once the master panel determines that there needs to be
a heat call it will determine the unit call order based on;
compressor run hours, alarm status, and unit number. Then
the master will call the unit in the  rst unit in the run order
to turn on
3. If the tank temperature does not increase 1°F in 300
seconds than the second unit in the run order will be
called to run
4. The master controls will keep reevaluating these
conditions and calling units as necessary to achieve
the desired rise in the desired amount of time
5. If you  nd that the units are not turning on fast enough
to meet building demand change the “System Timer” to a
smaller value in order to have units turn on quicker
6. If you  nd that too many units are turning on and meeting
the building demand very quickly (almost in a manner of
short cycling) you should try increasing the “Tank Di Set”
value so that additional units will only turn on as needed
MEMBE SCEENS
SINGLE UNIT HOME SCREEN OPERATING WITH
MASTER CONTROLS
SINGLE UNIT HOME SCREEN OPERATING AS A
SINGLE UNIT (IN DEFROST)

A.O. Smith 101 Series Specifications

General

Brand	A.O. Smith
Model	101 Series
Category	Water Heater
Language	English