Schwank STSp-USA - Manual (Page 21)

SP-MSTP-AU-05A
STS-p Manual
RD: DEC, 2003
RL: 5
KH
For ease of installation, this heater has been
provided with a fresh air intake duct hood. It
can be used as an outdoor intake hood to bring
combustion air to the heater from outside. Or to
use air directly from the room, it must be in-
stalled over the intake flange on top of the
burner. If drawing in fresh air from outside, it is recom-
mended as per common Engineering practice,
that the combustion air intake duct be insulated.
Do not use flexible dryer hose for air inlet duct.
The corrugated sides of this tubing add too much
restriction to the air flow.
Minimum air intake inlet distances:
Three feet above grade
Twelve inches from flue vent terminal of
heaters with input up to 100,000 Btu’s/hr.
Three feet from flue vent terminal of any
heaters over 100,000 Btu/hr
In installations where chlorinated
Hydrocarbons are in use, such as
Trichloroethylene or Chloroethylene Nu
it is essential that combustion air be
brought in from non-contaminated
13. GAS SUPPLY INSTALLATION
It is recommended that the approved flexible
connector supplied by Schwank be installed
between the heater and gas piping. The heater must be isolated from the gas
supply piping system by closing its individual
manual shut off valve (supplied by installer)
during any pressure testing of the gas supply
piping system.
If a rigid gas pipe connection is made, then compensation for normal gas
supply pipe expansion, and radiant tube expansion must be provided. All
piping must conform to local codes.
SEE SECTION 14: ( PAGE 20) HEATER EXPANSION
CAUTION:
CAUTION:
areas. Burning the fumes from these
gases will create Hydrochloric acid
fumes, which are detrimental to
humans, equipment and buildings.
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