PNEG-1785
NCHT “X” Series Ladders
11
3. Decals
The manufacturer does not warrant any roof damage caused by excessive vacuum or internal
pressure from fans or other air moving systems. Adequate ventilation and/or “makeup air” devices
should be provided for all powered air handling systems. The manufacturer does not recommend
the use of downward flow systems (suction). Severe roof damage can result from any blockage of
air passages. Running fans during high humidity/cold weather conditions can cause air exhaust
or intake ports to freeze.
Excessive vacuum (or pressure) may
damage roof. Use positive aeration
system. Make sure all roof vents are
open and unobstructed. Start roof
fans when supply fans are started.
Do not operate when conditions exist
that may cause roof vent icing.
DC-969
CAUTION!
Summary of Contents for NCHT X Series
Page 1: ...PNEG 1785 NCHT X Series Ladders Assembly Instructions PNEG 1785 Date 01 27 11 ...
Page 2: ...2 PNEG 1785 NCHT X Series Ladders ...
Page 49: ...4 Assembly Instructions PNEG 1785 NCHT X Series Ladders 49 Ladder Splice Detail Figure 4AS ...
Page 60: ...4 Assembly Instructions 60 PNEG 1785 NCHT X Series Ladders Ladder Splice Detail Figure 4BD ...