Download Report 2 - CSA Group

In the other possible configuration of the kit, the green metal Smart Heater connector
simply plugs directly into the mating green metal connector on the back of the
BAM-1020. The heater relay is located inside the BAM, and the heater power comes
from the BAM AC power supply at line voltage and frequency, and is fused by the
main 3.1A fuses in the power input module.
Warning! It is possible to incorrectly force the green metal heater connector into the
black plastic connector on a BAM which is configured to use the external relay, even
though both connectors have male pins. If this is done the BAM will not be damaged,
but the heater will not function and no sample RH control will occur!
Warning! The heater relay controls live AC line voltage to the green socket in either
version. Treat the green socket like a live power outlet whenever power is applied. Do
not open or service the relay module or heater module when power is applied.
Warning! The Smart Heater has triple redundant safety features to prevent
overheating, but the heater surface temperature can exceed 70 degrees C during high
humidity conditions. Use the white insulation sleeve to prevent contact with the heater
during operation.
Smart Heater
Version A: Green metal heater
connector plugs into green metal
connector on the relay module.
Relay module plugs into black
plastic connector on the BAM.
Version B: Green metal heater
connector plugs into green
metal connector on the BAM,
with no relay module.
Heater
Power Cord
Two Different Smart Heater Power Configurations
6. Tightening the Inlet: After the inlet tube is aligned and the heater installed, slide the
black rubber seal and white cap down over the top of the inlet tube and into the roof
flange. It is easier if you wet the rubber seal with water first. Tighten the white plastic
cap. Tighten the two set screws in the top of the BAM inlet receiver.
7. Inlet Support Struts: The BX-801 inlet kit comes with two angled aluminum struts to
support the inlet tube above the roof and prevent the inlet from moving in the wind.
These struts are typically fastened (about 90 degrees apart) to the inlet tube with a
supplied hose clamp. The bottom ends of the struts should be fastened to the roof with
lag bolts (not supplied). Some installations may require different methods or hardware
for supporting the inlet tube. Support the tube in the best manner available. The BX902/903 mini shelters do not require inlet tube supports.
8. Temperature Sensor Installation: BAM-1020 units are supplied with a BX-592
(temperature only) or BX-596 (AT/BP) sensor, which attaches to the inlet tube above
the roof. The sensor cable must route into the shelter to be attached to the BAM. Use
a waterproof cable entry point or weatherhead if your shelter has one. The BX-902/903
BAM-1020-9800 REV K
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