The following product guides are available for the Vision Overhead Radiant U-tube Heater 15kw 4.5m long (Nat Gas) (VS15UTEN):
Reznor Nortek Vision Sales Brochure (Jan 20)(https://www.reznor.co.uk/wp-content/uploads/2023/12/Reznor-Nortek-Vision-Sales-Brochure-Jan-20.pdf)