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Bosch highflow 21e
Bosch Electronic Highflow 21e
Back to the Bosch Range
The Bosch Electronic Highflow 21e is compact, space-saving and easy to install. It delivers 21 L/min at a 25°C rise, has a 5.56 energy efficiency rating, is suitable for 1-2 bathroom homes and is available in Natural or LP Gas.
Features & Benefits
- 5.56-star energy efficiency
- Continuous flow technology
- Delivers 21 L/min at a 25°C temperature rise
- Compact design
- Install up to 4 optional temperature controllers
- Suitable for 1-2 bathroom homes
- 55°C model standard (50°C-limited model available)
- Antifrost included with all models
- External installation only
- Solar compatible without the need for a solar transfer valve
- Available in Natural or LP Gas
- Comprehensive warranties
Warranty
Domestic Warranty
3 Years - Parts and Labour
10 Years - Heat Exchanger (part only)
Product Specifications
Bosch 21e

Part Number
Installation
Ignition
L/min (25°C rise)
No. of bathrooms
Min. operating inlet water pressure (kPa)
Min. constant water pressure for Max. flow (kPa)
Max. inlet water pressure (kPa)
Mj/H
Star Rating
Antifrost
Transfer valve required for solar
50°C Limited Part Number
Gas Type
Electrical Supply

Temperature Controllers
Unit Height (mm)
Unit Width (mm)
Unit Depth (mm)
Carton Weight (Kg)
Domestic Warranty
Parts and Labour
Heat Exchanger (part only)
Pipe Connection Size
Natural gas (NG)
LP gas
Cold Water
Hot Water

Bosch 21e

YS2170RAH
External
Electronic
21
1-2
100
130
1000
170
5.56
Standard
No
YS2170RA5*
NG/LPG
230 VAC - 240V 50 Hz (10amp weatherproof power point required within 500 mm of the unit)
Up to 4 temperature controllers can be installed
520
350
170
19

3 Years
10 Years

20 mm (3/4")
20 mm (3/4")
20 mm (3/4")
20 mm (3/4")

Back to the Bosch Range
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