Operating instructions

Fig. 404: Perpendicular Mounting Brackets
B. Enclosure box top frame bracket mounting (behind cab).
1. Drill and install top frame brackets with clamps provided (optional top frame mounting bracket
kit part no. 600.055).
2. Remove the enclosure cover.
3. Position enclosure box on brackets making adjustments where necessary to ensuring
adequate clearance for muffler and muffler attachment bracket.
4. Locate the 4 holes in base of enclosure and mark on mounting brackets.
5. Drill holes (Ø 1/2") on each bracket where marked.
6. With bolts supplied, fasten enclosure box to top frame brackets.
C. Basic and Compact heater kit mounting.
When ever the heater is installed in an existing enclosure box the installation template (provided with
heater kit) must be used and adequate ventilation [1 in² (6 cm²)] must be provided.
Heater must be protected from contaminates such as road splash, salt, mud and debris.
DO NOT mount heater inside passenger, sleeper or storage areas.
1. Ensure adequate clearance for heater and components in existing enclosure or mounting
area.
2. Lay out supplied mounting template and mark all holes for drilling keeping in mind location for
exhaust, coolant lines and wiring access. Once all requirements are met, drill holes.
3. Mount heater and components according to your plan, fasteners for mounting heater are
provided.
403
Thermo 90 S 4 Installation
NOTE
Brackets for perpendicular mounting are available. Order part # 905.822.