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IMPORTANT: Read and understand this manual before assembling, start-
ing or servicing heater. Improper use of heater can cause serious injury.
Keep this manual for future reference.
Heater Sizes: 35,000 50,000 70,000
100,000 150,000 Btu/Hr
Models: NTH35-2, NTH50-2, NTH70-2, NTH100-2,
and NTH150-2
PORTABLE
FORCED
AIR HEATERS
OWNER’S MANUAL