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VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
WIRING DIAGRAM OVERVIEW
• Ladder style wiring diagrams (located inside the control cabinet door)
show power, control, and humidifi er to control cabinet interconnection
requirements.
• Heater connection diagrams (located under the humidifi er terminal cover)
show bussing and wire connections to heaters.
• External connections diagrams (located inside the control cabinet door)
show connection points to the microprocessor-based controller and wire
terminals for external safety and control devices, airfl ow proving switches,
high limits, transmitters, or humidistats.
All wiring must be in accordance with all governing codes and with
Vaporstream wiring diagrams.
ELECTRICAL INSTALLATION
Wiring and branch circuit protection is provided by the installer per the
National Electrical Code (NEC) or in Europe, IEC 60364. For power supply
and machine ground con nec tions, size the wire using the 75 °C wiring table,
per the NEC (or IEC 60364). Then use copper conductors rated for a 105 °C
en vi ron ment. The wiring from the control cabinet to the humidifi er must be
rated for 105 °C.
Verify electrical current characteristics — voltage, phase and amp draw — and
capacity requirements against those listed on the name plate.
SERVICE DISCONNECT
A service disconnect must be installed per NEC requirements and/or
governing codes.
• For single stage units, the fuse block and fuses are omitted in the control
cabinet; therefore, the installer MUST provide a FUSED disconnect.
• Multiple stage units require a service disconnect (provided by the installer).
For European models, locate the disconnect per IEC 60364. Refer to the
detailed drawing of the disconnect location on Page 31 of this document.
Wiring:
INSTALLATION
Important:
Failure to follow these wiring procedures can
result in erratic operation or failure.
This product has been tested at the factory for
proper operation. Product failures resulting from
faulty handling, incorrect wiring, or shorting of
wires together on external components are not
covered under your DriSteem warranty. Review
information and di a grams before proceeding.
WARNING
Electric shock hazard
Only qualifi ed electrical personnel
should perform fi eld wiring installation
procedures. Improper wiring or contact
with energized circuits can cause
property damage, severe personal
injury, or death as a result of electric
shock and/or fi re.
Do not open control cabinet or
remove heater terminal or subpanel
access panels until electrical power is
disconnected.
CAUTION
Damage from debris
When drilling penetrations in the
control cabinet, protect all internal
components from debris, and vacuum
out the control cabinet when fi nished.
Failure to comply with this directive
can damage sensitive electronic
com po nents, cause erratic operation
or failure, and void your DriSteem
warranty.
Overview
