Lochinvar HS 50 Series 100, 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 Diff  Set” 

– Tank Diff 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 Diff  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 Diff  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 

confi gured in 

“Master IP Gateway” 

– IP Address for internet router on site 

used to connect to unit via VPN

MASTER CONTROL PANEL SETUP TO 
MEMBER 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 confi guration screen press the “SEARCH FOR 

UNITS” button to fi nd all of the connected members (give 
the master controls 2 minutes to fi nd all of the member 
units)

MASTER CONTROL UNIT CALL SEQUENCE 
OF OPERATIONS

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 fi 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 fi 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 fi 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 Diff  Set” 
value so that additional units will only turn on as needed

MEMBER SCREENS

SINGLE UNIT HOME SCREEN OPERATING WITH 
MASTER CONTROLS

SINGLE UNIT HOME SCREEN OPERATING AS A 
SINGLE UNIT (IN DEFROST)