Space-Ray ADU25 Installation And Operation Instruction Manual page 42

Fig. 26
Fig. 27
Fig. 28
Radiant tube heaters will expand and contract during operation. Therefore it is essential to provide a
flexible metallic hose, which must conform, to national or Local Regulations, to connect the appliance to
the gas supply. Minimum size to be ½" (12.7mm) bore.
The gas pipe, flexible hose and connections must be self supporting. The gas pipe work must not bear
any of the weight of the heater or any other suspended assembly.
Form #4420110
Oct 2019 -41-