Hazloc Heaters SRH Owner's Manual page 5

2. Louvers may be adjusted to provide greater downward deflection of the discharge air. However, it is
recommended that louvers not be set less than 15 degrees of the closed position.
3. Leave at least 22 in. (559 mm) clearance between the rear of the motor and the nearest obstruction.
4. For easy removal of the heat exchanger core assembly, leave clearance beneath the heater equal to the
height of the heater cabinet plus 3 in. (76 mm).
Suggested piping arrangements only, refer to ASHRAE HVAC Systems & Equipment for more detail
Hazloc Heaters
6" Long
Full Size
Dirt Pocket
Unit Heater Connection for High Pressure Steam
Hazloc Heaters
6" Long
Full Size
Dirt Pocket
Unit Heater Connection for Low Pressure Steam
- Open Gravity or Vacuum Return System
— PIPING SUGGESTIONS —
Gate Valve
Petcock (install if trap
does not have air vent)
OR
Thermostatic Air
Vent option
Union
Inverted
Bucket Trap
Gate Valve
Float &
Thermostatic Trap
Strainer
5
Steam Main
Gate Valve
Union
Swing
Check
Valve
Steam Main
Gate Valve
Return Main
Return Main