Lochinvar SPS0250 User Manual

Solar Pump Station and Differential Control

3 Models - Covering up to 1000sq.ft.
of Collector Area

Complete System Control

Variable Speed Pump

Built-in Differential Control
w/ Pump Control

2 Year Limited Warranty

®

Commercial Solar
Pumping Stations

The Lochinvar/TiSUN Commercial Solar Pump Station, complete with Differential Solar Control is an all in one solar
pumping package. Standard features include a differential control with eight different system capabilities, variable speed
pump, air separator, flush and fill valves, safety group, and EPP two piece insulation. Lochinvar can provide the right pump
station to meet almost any solar pumping need.

Available in three sizes, capable of providing flow through up to 1000 square feet of collector area, the Commercial Solar
Pump Station can provide adequate flow through many different size collector arrays.

How it works...

The Lochinvar/TiSUN Commercial Solar Pump Station with Solar Differential Control constantly
monitors the collector temperature and the tank temperature. As the tank temperature cools below
setpoint and the difference between the two temperatures reaches a field adjustable setpoint, the
differential control will start the circulation pump. If the variable speed pump feature is utilized
the solar differential control will adjust the speed of the pump to achieve the highest temperature
difference between the collector and the tank.

This large temperature difference will harvest the solar heat in the most efficient manner possible.
If the constant flow feature is used the pump will operate at a steady speed. The pump will
continue to operate until the tank reaches its desired temperature or there is no longer sufficient
difference between the collector and the tank temperature to heat the tank.

Outstanding Features

SD Card

• Graphical LED Interface with Backlight

• Data Logging with SD Card

• Two Collector Sensors

• Two Tank Sensors

• Electronic Flow Sensor

• BTU Metering

• 8 System Functionality

- One or Two Collector Fields

- One or Two Tanks

- Two Pumps, One Diverter Valve

• 3 Outputs, 2 For Pump Speed Regulation

(PWM Signal)

• Impulse Flow Sensor Input

• SD Software

Supply/Return Multi-Function
Valve with Thermometer and
Check Valve

EPP, Two Part
Insulation Shell

EPP Heat Insulation

145 PSI Relief Valve

Pressure Gauge

Fill and Flush Valve
with Shut-off

Variable Speed
Circulation Pump

Fill and Flush Valve
with Shut-off

VFS Flow Sensor

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