Roberts Gorden Vantage twin Fire Unitary Infrared Heater TF-250 - Manual (Page 36)

TF-S ERIES I NSTALLATION , O PERATION AND S ERVICE M ANUAL
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FIGURE 20: U-Tube Heater Layout Overview (Continued)
c
b
d e e
60' (18 m) Tube Length (Each Side)
h
g
c
b
d e e f
70' (21 m) Tube Length** (Each Side)
h
g
e
c
b
d e e
80' (24 m) Tube Length** (Each Side)
h
g