Blazesun Premium Plus 20 Tube 250L Solar Water Heater

FULL TECHNICAL SPECIFICATION - 20 TUBE 250L
Specification
Details for 20 Tube 250L
Model

Blazesun Premium Plus 20 Tube 250L - SS316 Edition 2026
Capacity

250 Litres (Usable 245L) @ 60-75°C
For Family

5-6 Persons Joint Family
Inner Tank

SS316 Marine Grade 1.4401 - 0.6mm Thick - Argon Arc Welded

Outer Tank

SS304 Mat Finish - 0.5mm Thick

Insulation

60mm PUF - 45kg/m3 - Germany Injection - 0 Gap

Heat Retention

80 Hours - Loss <3°C / 24H

Vacuum Tubes

20 Pcs x 58mm x 1800mm - Copper Coating

Tube Coating

Triple - Copper + AL/N/AL
Tube Efficiency

Absorptance 95%, Emittance <5%, 23% Faster than Black

Tube Glass

Borosilicate 3.3 Low Iron 1.6mm
Vacuum

P < 0.005 Pa

Hail Proof

25mm Diameter
Heating Time

90-120 mins for full 250L in good sun
Working Temp

-15°C to 250°C
Stand

GI 1.5mm Hot Dip Galvanized + Powder Coated, 30° Angle
Wind Load

120 km/h
Inlet/Outlet

3/4" BSP SS304 Nipple
Weight Empty / Full

110kg / 360kg
Space Needed

8ft x 6ft - South Facing, No Shadow 9AM-3PM
Water Head

Overhead Tank 5-10 ft Above Solar
Warranty

5 Years Guarantee on Storage Tank + 10 Year Warranty on System

Tube Warranty

3 Years Vacuum Warranty
In Box

Tank 1pc, 20 Copper Tubes, Heavy Stand, Silicon Rings, Warranty Card

FAQ - For 20 Tube 250L
Q1: 20 Tube 250L price in Nepal? Is 5Y guarantee included?
A: Blazesun 20 Tube 250L Premium Plus comes with 5 Years Guarantee on SS316 0.6mm Storage Tank + 10 Year System Warranty + 3 Years on Tubes. It is 250L for 5-6 person with 60mm PUF and 20 copper tubes. Contact Solar Filter Nepal 9860331966 for best price with free installation in Kathmandu Valley.

Q2: 180L vs 250L - which to buy for 5 person?
A: For 5 person, 180L is not enough in winter - you will need electric backup. 20 Tube 250L gives 70L extra, enough for all. If 3-4 person buy 15 Tube 180L, if 5-6 person buy 20 Tube 250L.

Q3: Does 20 Tube need more space and strong slab?
A: Yes, needs 8x6 ft vs 6x6 ft for 15 tube. Full weight 360kg - need RCC slab. Our team checks your slab in free site visit.

Q4: Why 60mm PUF important for 250L?
A: 250L is bigger tank - more surface area - more heat loss. 55mm loses heat fast. 60mm 45kg/m3 keeps 250L hot for 80 hours. Very important for 3-day cloudy in Kathmandu.

Q5: What is electricity saving with 20 Tube 250L?
A: 250L solar saves 3000-3500 per month vs geyser/heater for 5 person family. Yearly saving ∼40,000. No electricity needed.

Q6: Installation process?
A: Call 9860331966 - we do free site visit same day in KTM, check direction, shadow, slab, TDS, pipe route - then next day installation with SS fittings. 3-4 hours work.