Solar Infra Systems SIS25M 1848 Operating Instructions Manual

Radiative

Conductive

Total Compare d to

Heat Heat Heat Singl e Pane

Window Construction Loss Loss Loss Heat Loss

(Btu/hr/ft2) (Btu/hr/ft2) (Btu/hr/ft2)

Single Pan

Clear 35 21 56 ----

Double-Pan

Clear 21 13 34 65%

Double-Pan

Low-E 5 15 20 36%

Also the perfect answer to

Solar-Infra Systems International Ltd

OPERATING INSTRUCTIONS

us at

Don’t forget to fill out the

Energy Payback Estimator

209-19138 26th Avenue, Sur rey , BC, V3S

3V7 Canada. Toll Free 1-855-535-2056

T-604-535-2056 F-604-535-0681

www.solarinfrasystems.com

SOLAR THERMAL AIR HEATER

Consumer Model SIS25M 1848

Issue 9/15/2013e

What is an Air Solar Heater

This SIS air solar heater uses the sun’s
solar energy to heat air through a window in
the home, apartment, cottage, boat, RV, and
circulate this heated air in the room. T his is
not a solar PV panel or solar water heater.

The heater is hung or placed in a south
facing closed window inside the room or
space to be heated.

IMPORTANT

This SIS solar air
heater is designed for
interior installation behind
a single pane window for
best efficiency. Double
pane, low-E, argon, and
triple pane will reduce this
efficiency to less than 40%
to 65%. .

The SIS Solar Air
Heater, mounted inside
the room, behind the
window glass, reverses
this heat loss, collects the s olar heat coming
through the glass, and heats the air in the
room. Ordinary single glazing works best with
an interior Air Solar Heater.

SIS has a range of exterior mount models
that are not affected by
glass obstruction and are
capable of heating an
entire house. For more
information
2056 or email us
at

info@solarinfrasystems.

com

call 1 855 535

Warranty Card and the Solar

This SIS model air solar heater heats air.
It is lik e an electric room c onvection air space
heater except it is operated by the sun’s solar
energy. Hang or set it in a sun facing window,
or side-ways, or even upside down, and it will
maintain heat in a large room or area in the
home. The heating capacity is equivalent to a
150 to 500 watt electric heater, depending on
the daytime sun and cloud cover.

The model air solar heater is also
transparent and will still let most of the
window sunlight into the room.

Sunlight and a PV panel also operate a
fan on the heater. The fan draws the room air
into the heater and then pulls the air through
metal solar energy collectors heated by the
sun. The solar heated air is reci rculated bac k
into the room. The fan has a speed control so
the air exchange in the room can be set,
usually to 1 to 1-1/2 hours, at up to 75 cubi c
feet per minute.

heating sheds, garages,

cottages, and stored boats and

RV’s where there is limited or

no electricity.

Patented technology and
international patents pending.

Solar Infra Systems Int. Ltd Issue 10/1/2013

The SIS Air Solar Heater Installation

1. Hang, or set on the sill, in a south facing window. The window should be

ordinary single glazing.

2. Large glass areas, such as solariums, can have too much heat loss through the
glass to the air outside, for thi s size of SIS air solar heat er. It may require more
than one heater or a larger model. Please contact

[e-mail] and we will help you size the solar heating.

3. The Solar Heater can be mounted between the window and a venetian blind.
Make sure the blind is open enough to allow fan recirculation into the room.

4. Rooms and home areas usually are planned for 1 to 2 air changes every three
hours.

5. The fan capacity is 75 cubic feet of air per mi nute. Divide this into the volum e of

6. For example:

7. Cloudy, low sunlight, or rain conditions may not produce enough Photovoltaic

8. WHAT IS YOUR PAYBACK: We use a NASA/Government program that

the room or heated area and this will show the number of air changes per hour.
Air changes = Room 20ft x 15ft x 10 ft high = 3000 cubic feet volume.
Air Changes= 3000 cubic ft = .66 air changes per hour

75 cu ft/min x 60 min/hr (~2 air changes every 3 hours)

Panel energy on the front of the heater to operate the fan, even though there
may be enough solar energy for the heater to add 3-4 degrees to the room
temperature

calculates the energy savings and heating output in most locations in the world.
Email your location, home area, electrici ty cost per kWh, heating fuel and unit
cost, and we will send you the time payback estimate on the savings in energy
by using an air solar heater or fill in form at www.solarinfrasystems.com

US Metric

Peak Efficiency Ave 80% 80%

Ave Max Daily Power
Output

1

950 btu/hr/sqft 2.99 MWhr/m2

Window Mounting

Single Glaze Single Glaze

Heater Mounting Tilt
in Window

Vertical (90°) Vertical (90°)

A zimuth (Direction
facing Sun)

0° (Due South) 0° (Due South)

A ve Total Annual
Solar Radiation

2

-

Tilted (90°) 12 mon

3.7mbtu/sqft 1,090 MWh/m2

Total Annual Heating
Delivered (9 m on)

5.11mbtu 1.5 MWhr

A ir Flow Range 50-75 cfm 85-127 m3/hr
Max Air Pressure .093inH2O 2.37mmH2O

Noise Level 32.95db 32.95db

Ave Temperature
Increase

3

Sept-May

21.1 °F 11.7°C

Max Air Temperature
Increase

122°F 50°C

Solar Collector Infra
Red Absorption

95% 95%

Solar InfraRed
Transmission
Polycarbonate Panel

90% 90%

Number of Staged
Solar Collectors

27 27

Staged Collector
Projected A rea

61.35sqft 5.70m2

Arperture 4.97sqft .462 m2

PV Panel 7W 14vdc 7W 14vdc

GHG Carbon Saving

0.3 TCO2/yr 0.3 tCO2/yr

Collector Material aluminum aluminum

Plastic Panel

4

Materials

UL94v-0 UL94v-0

Heater Weight 11.24lbs 5.1kg

1. Based on 80% of solar radiation on 90° tilted heater (vertical) behind
single glaze w indow at 49°N lattitude. 9 months of year (Sept to May)

2. RET Screen data (NR C an/C anm etE NE RG Y) (NASA solar data)

3. Retscreen 49°N latitude -123.1°E longitude.

4. Underw riter's Laboratories -self extinguishing. Conforms to windo w and
wall covering building stds.

South (or North in the southern

catches morning solar and west

WARRANTY TERMS

Solar-Infra Systems International Ltd

2056

0681

www.solarinfrasystems.com

Don’t forget to fill out the Warranty Card and the Solar Energy Payback Estimator

Model SIS 25M 1848
SPECIFICATIONS

Dimensions

209-19138 26th Avenue, Surrey, BC, V3S

3V7 Canada. Toll Free 1-855-535-

T-604-535-2056 F-604-535-

Sun Orientation

Specifications subject to change without notice.

Solar Infra Systems Int. Ltd Issue 10/1/2013

If a defect arising solely from faulty hardware, materials or workmanship appears under proper use of this equipment:
For defects in hardware, materials and workmanship, within a period of 12 months from the date of purchase, Solar Infra Systems will repair the defect, or at its option, replace the defective
part or parts.

The main exclusions from the warranty are if the equipment has been:

Solar Infra Systems is not liable for any consequential loss.

The warranty is given to the Buyer of this equipment from Solar Infra Systems or Solar Infra Systems subsidiaries.
The warranty cannot be transferred by the Buyer to any other person or company.

Contact: email:[e-mail] Tel: Toll Free 1-855-535-2056.

1. Neglected, mishandled or inappropriately used; or

2. Modified or altered in any way except with the prior approval of Solar Infra Systems.

1 Solar Infra Systems is not liable to the Buyer for any defect unless the Buyer immediately gives Solar Infra Systems notice in writing or email of the alleged defect with full

particulars of the operating conditions under which it became apparent and returns this equipment, or relevant part, shipping paid to Solar Infra Systems.
2 Any items returned to Solar Infra Systems are at Buyer’s risk. Repaired or replacement items will be despatched shipping paid to the address requested by Buyer.
3 Solar Infra Systems total liability relating to the supply of this equipment is limited to the Buyer’s purchase price of the product .

True South

20deg 20deg

hemisphere) facing covers 20 degrees
on both sides of a true south. More east

catches afternoon solar.

Watch for roof eves that overhang
and shade the window and heater as
well as trees and buildings that block
the sun’s path.