Roberts Gorden Vantage twin Fire Unitary Infrared Heater TF-250 - Manual (Page 23)

SECTION 7: H EATER I NSTALLATION
17
FIGURE 14: Critical Hanger Placement
Hanger
Side View
Must Be Within 4" (10 cm) Front View
S-hooks
Reflector
Hanger
45° Angle
* Allows for thermal expansion of system
Typical Suspension Details
Rod 3/8"
Beam Clamp Concrete Beam
Wood Beam
Washers
Locknut
Screw Hook
3/8"
24" min.*
(61 cm)
“X”*
Anchor
S-hooks
Chain Size
3/16"
Minimum
Turnbuckle
Not Included
Description Part Number
S-Hook 91907302
Tube/Reflector Hanger 03090100
Total Straight Length (both sides) or Length from U-Tube to U-Tube
in a Double "U" Layout
Typical Expansion
Each Side
Minimum “X” Length
0’ - 50’ ±1” (3 cm) 12” (31 cm)
51’ - 60’ ±2” (5 cm) 18” (46 cm)
61’ - 80’ ±3” (8 cm) 24” (61 cm)
81’ - 100’ ±4” (10 cm) 30" (76 cm)
101’ - 120’ ±5” (13 cm) 36" (91 cm)
121’ - 140’ ±6” (15 cm) 42" (107 cm)
141’ - 160’ ±7” (18 cm) 48" (122 cm)
If the installation requires a shorter suspension length than the minimum listed, the suspension length
may be reduced by 6" (16 cm). In this case, tube clamps MUST be used at the two farthest hangers
on each side of the burner.
See Page 18, Figure 15.