SR21L/SR11L EPP Solar Work Station & Pump Stations

1.1 Overview

• SR11L/SR21L EPP solar workstation is used in a split pressurized solar water heater system.
• It can be combined with the SR258/SR288 controller.
• It combines flow control, heat cycle, exhaust, pressure control, temperature display, system injection/discharge and many other functions into one.
• By connecting solar collectors and split pressurized water tanks, store solar energy in the water tank.It can monitor system temperature, pressure, flow, etc. at any time.The structure of the entire assembly is compact, easy to install and use, good insulation effect.

1.1.1 Product picture

1.1.2 Kits Parameter

1.2 Main functions

1.2.1 Flushing and filling the solar system

Flushing and filling connector is already integrated in the solar station, and we still recommend installing a filling and drainage valve horizontally at the lowest point of the solar circuit for flushing system.

1.2.2 Flow check

The flow counter is used for measurement and display of flow rate 1-20L/M, in order to guarantee the flawless function of the measuring device the system must be flushed and free from foreign substances.

1.2.3 Manual / Automatic integrative air bleeder

1.2.4  Electrical connection and operation instruction of controller (see manual of controller)

The controller is already integrated in the station and ready to plug in, display and digital counter are already preinstalled at factory. For maintenance or service work, it needs to take out the controller from station. For further information on electrical connection of the controller, please see manual of controller (terminal layout).

1.3 Delivery scope

2.1 Technical Parameters

2.2 Size

Product：450*300*158mm

Package：500*400*200mm

SR11L:7KGSR21L

2.3 Optional controllers for pump station

• SR11L/SR21L can be used with SR258/SR288 and other controllers.SR258/SR288 solar water heater intelligent controller is uesd for split pressure solar water heater.

• Developed with the latest high-performance microcontroller from NXP, the Netherlands,thereby achieving intelligent control.

• All devices use industrial grade standards,which can operate freely in cold, high temperature and humid environments.

• Simultaneous use of the clock chip for precise timing control.

• SR11L/ SR21L is LCD liquid crystal display, beautiful appearance, stable and reliable performance, easy installation, become the most ideal accessory product for solar water heaters.

2.3.1 SR258 controller

2.3.2 SR288 controller

3.1 SR11L/SR21L installation diagram

SR11L

Operation Instruction SR11L/SR21L