Architect information > Present products > S7 - Medium - Architects

Specifications for the S7 medium sized solar water heating system

Medium size system - hot tap water and pool heating

HelioPower will provide:

One complete 25 kW solar energy system model S7M for a slate roof 1. (pre-heating of potable water (for supply to the std. geyser) and 2. swimming pool heating), which consist of the following basic elements:

HP pump/control setup integrating into one wall mounted unit:

Control electronics HP/ZA01, motor controller FC750, various sensors, etc.
One industrial stainless steel two-stage circulation pump operating at variable speed for the solar circuit
One stainless steel heat exchanger (type GEA material AISI316, Ni brazed) size 10 kW connected to energy storage for hot tap water preheating
One stainless steel heat exchanger (type GEA material AISI316, Ni brazed) size 30 kW for the swimming pool heating to be mounted close to the pool connected with 2 x 25 mm PEX tube connection to the HP pump/control unit

If needed one standard Speck pool circulation pump with build-in 500 ym screen to be mounted closed to the pool in the pool heat exchanger circuit
Installation of a 45 m2 area (plus/minus 3 m2) invisible solar panel (including supply of bonding compound to be used by the roofing company)
Hot water storage with control system
One Pt-1000 sensor roof mounted
Insulation of hot piping supplied by HelioPower

Click on image to view large overview

Customer/Client must provide:

230 VAC 16 amp power point (phase, neutral, ground) less than one meter from pump/control setup location
1 m2 wall space to HP pump/control setup in garage or similar
North facing roof section with relevant size according to the system size with std. slate roofing battens (35x35 mm) spaced 153 mm (plus 3 minus 0 mm) and capable of the extra load of 19 kilo/m2
Water proofing vapour diffuser membranes mounted between the rafter and the battens
Access from pump/control setup to roof with solar panels for 4 pcs insulated tubings
Space available in the pool service room for the solar heating heat exchanger and pump

Performance in general:

System performance is vastly depending on the insulation of all tubing and the pool
The pool water outlet for the solar circuit connection must be at minimum half way to the pool bottom
One year service interwalls will keep the system in good order and max performance
Pool cover will reduce the heat losses and pool water evaporation significantly
The geyser temp control device must be set at 65C for hygienic operation and elimination of the legionella decease

HelioPower will NOT provide:

Geyser(s) and their mounting or connections
Insulation of pool or the pool tubings
Slates or mounting of the slates

Plumber company must provide:

Connection with non copper tubing from cold/city tap water inlet to HP pump/control setup
Connections from HP pump/control setup to geyser(s) with non copper tubing fully insulated throughout the building
All tubes insulated before potentially cast into walls and floor throughout the building

Pool company must provide:

One 50 mm PVC outlet after main filter and before the pool inlet for connection to the pool solar heater unit
One extra 50 mm insulated PVC tubing from solar heater unit to pool inlet

Roofing company must provide:

Slates - to be glued on with glue provided by HelioPower
Cladding of the roof without nails - slates only glued onto the solar panels
Limited use of bitumen felt - the edges around the solar panel

HelioPower will further provide:

Cleaning of site re: HelioPower work
Three month of free service and calibration of system
Optionally a service contract for a once per year maintenance visit
15 year warranty on panels when the solar circuit is filled with 30% glycol and the glycol is replaced each 5 year by HelioPower or a certified contractor

S7L wall mounted pump unit

More specifications and download

Download the S7M fluid diagram for the S7 medium solar system as a pdf file

Download the S7M specification as a pdf file and print on A4 paper