Lochinvar SPS0250 Installation Manual

SL-PS-I-O Rev B

Solar Pump Station

Installation and Operation

Manual

SPS0250, SPS0500 & SPS1000

 WARNING:

Save this manual for future reference.

This manual must only be used
by a qualified heating installer/
service technician. Read all
instructions, before installing.
Perform steps in the order given.
Failure to comply could result in
severe personal injury, death, or
substantial property damage.

Contents

HAZARD DEFINITIONS .................................................... 2

1. GENERAL INFORMATION

Included components ..................................................... 3-4

2. INSTALLING THE SOLAR STATION

Installing the solar station on a wall ................................... 5

Installing the relief valve ..................................................... 5

Installation, wall bracket for expansion tank ...................... 5

Installation, connection lines to tank and collector ............ 5

Piping .......................................................................... 5

Clamp ring screw connections ................................... 5

3. TECHNOLOGY, INSTALLATION AND
COMMISSIONING

Clamp ring screw connections .......................................... 6

Operation, multi-function ball valve and check valve .......... 6

4. COMMISSIONING THE SOLAR SYSTEM

General .............................................................................. 7

Flat seal screw connections .............................................. 7

Filling, flushing and bleeding ............................................. 7

5. PRESSURE LOSS AND RESIDUAL

DELIVERY HEIGHT ..................................................... 8

6. VFS FLOW SENSOR .................................................. 9

7. TECHNICAL DATA FOR SOLAR STATION ........ 10-11

8. COMPONENT BREAKDOWN

SPS0250 ......................................................................... 12

SPS0500 ...........................................................................12

SPS1000 ...........................................................................13

9. SERVICE

Air separator .................................................................... 14

Flat seal screw connections ............................................ 14

Clamp ring screw connections ........................................ 14

Disassembling the solar station ........................................14

Draining the system .......................................................... 14

10. FAULTS, CAUSES AND RECTIFICATIONS

Pump doesn’t run when power is switched on .................15

Motor blocked ....................................................................15

Pump noise .......................................................................15

Revision Notes ................................................. Back Cover

Hazard definitions

The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or
to important information concerning the life of the product.

 DANGER

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious
injury.

 WARNING

 CAUTION

CAUTION

NOTICE

WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious
injury.

CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate
injury.

CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not
avoided, may result in property damage.

NOTICE indicates special instructions on installation, operation, or maintenance that are important but not
related to personal injury or property damage.

2

1 General Information

SL-PS Installation & Operation Manual

 WARNING

 WARNING

 WARNING

 WARNING

Before starting work, the Installer must read, understand and note these installation and operating
instructions.

The solar pump station may only be installed and maintained by trained professionals. Trainees may
only work on the product under the supervision of an experienced person.

All instructions in this Installation & Operation manual should be observed when using the solar
station. No other form of use is intended.The manufacturer is not liable for any damage resulting from
misuse of the solar station. For safety reasons, modifications or changes are not permitted.

■ The solar station must be installed as far away from the collectors as possible. Extremely high
temperatures may occur in the pipes near the collectors. If installing in attic space, ensure that
the instruments do not overheat.

■ The pressure / temperature operating parameters must be within the prescribed limits. Excess
operating temperatures should be avoided for continuous operation.

■ The provisions stated in DIN EN 12976-1 should be observed when installing solar systems.

■ The expansion tank should be regularly checked according to DIN 4807.

■ Solar systems should be grounded to protect against lightning.

■ The system’s electrical connection for sensors and voltage supply should only be established by a

trained professional. The relevant specifications (VDE 0100, VDE 0185, VDE 0190 etc.) should
be observed as well as special local (construction) requirements. (Grey cable = tank, black cable
= collector)

 WARNING

 WARNING

 WARNING

 WARNING

■ The solar pump station’s componentry varies depending on type and equipment.

■ The diagrams used are examples.

■ Subject to technical changes and further developments.

A properly sized expansion tank must be used to avoid damage to the solar thermal system.

Thermal expansion tanks should be sized to account for 1.5 times the solar system circuit volume.

The expansion tank may be hot, ensure that scalding does not occur.

Failure to heed these instructions, especially the safety instructions, can result in the destruction of and
defects on the expansion tank, endanger persons, and impair the operation.

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1 General Information

SL-PS Installation & Operation Manual

Included Components

Solar Station:

■ Grundfos solar circulation pump

■ VFS sensor (flow sensor)

■ 145 psi relief valve, with pressure gauge

■ Multi-function instruments (Flow Check, Thermometer,

Fill Valve)

■ EPP two-part bracket with mounting kit

Installation kit:

■ Wall and tank bracket with mounting kit

Solar Control unit:

■ LCD Plus solar control unit with integrated energy balance
function.

■ 2 collector and 2 tank sensors Pt 1000

Technical documentation:

Figure 1-2 SPS1000

■ Operation and installation instructions (with appendix) for
pump and solar control unit.

Figure 1-1 SPS0250/ SPS0500

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2 Installing the solar station

SL-PS Installation & Operation Manual

Installing the solar station on a wall

■ Remove front insulation shell.

■ The solar pump station forms a single unit with the wall

bracket and rear insulation shell. Secure both components
as a complete unit at the intended location, working the
front and using anchors and screws suitable for the wall
construction type.

Installing the relief valve

■ The solar station is equipped with a solar safety relief valve
which meets the relevant requirements.

■ Fit the enclosed relief valve to the outlet of the return
instruments above the pump using the 3/4" union nuts. A
gasket is enclosed with the solar station for use when
installing the relief valve.

■ The enclosed discharge connection bracket should be fitted
to the safety valve so that there is no risk of scalding should
liquid escape. Follow local codes for drainage piping.

The following information should be noted:

■ The safety valve must be easily accessible.

Installation, wall bracket for expansion
tank: (Lochinvar/TiSUN accessories)

■ Fit the wall bracket for the expansion tank (if equipped) to
the right of the solar station.

■ Ensure that the corrugated stainless steel hose is long
enough for the connection between the pump station and
the expansion tank, not forgetting the expansion coupling.

Installation, connection lines to tank and
collector

A) Piping

■ Connect the lines between the solar pump station and tank.

■ Connect supply and return lines to the collectors.

B) Clamp ring screw connections

■ Refer to Section 3: Technology, installation and commissioning,

on page 6.

■ No valves should be placed between relief valve and pump
station. The relief valve should be piped to a suitable drain
as close as possible to the pump station with no reducing
couplings or other restrictions. The piping must be sloping
away from the pump station at all times.

■ Dirt traps or other constrictions are not permitted between
the collectors (field) and safety valve.

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