Performance

Perimeter heating output will depend on unit height, element size and number etc. Output for the three standard designs is summarised below.

Outputs are based on a LPHW mean water temperature of 80°C, an entering air temperature of 20°C and a water velocity of 1 m/s.

SR = Single Row
DR = Double Row

Based on LPHW 80°C m.w.t.
20°C e.a.t. and 1.0 m/s water velocity
Grille free area 33%

Outputs for variations in water velocities and temperature variations can be used using the correction factors listed below.

Notes:
A* = STG and FG not available in size A element
Table of outputs is for TG and HG:
For STG unit: Use unit height minus 50mm
For FG unit: Use panel height in place of unit height
For low level integral cable duct units, reduce by height of cable duct.