Installation Guide
mr
.
steam
®
Steam@Home
®
Installation, Operation & Maintenance Manual
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installer
ELECTRICAL
All electrical wiring to be installed by a qualified
licensed electrician in accordance with National
Electrical Code and local electrical code.
POWER WIRING
See “Field Power Wiring” Diagrams (below)
1. Check power voltage. Use 240V rated unit when
supply is greater than 208V. (Most homes have
240V, 1PH service). Use 208V rated unit for
208V power.
2. Use minimum 90˚C/300V rated insulated
copper conductors only, sized in accordance with
National Electrical Code and local electrical code
for the current in Ampere Chart. If allowed by
codes, NM cable may require a larger wire size
than as listed on the chart.
3. Connect suitably sized equipment grounding wire
to ground terminal provided.
4. Install a separate circuit breaker between sup-
ply and unit. Provide a power supply disconnect
within sight of the steam generator or one that is
capable of being locked in the open position.
5. Use two-wire supply source and equipment
8
Contactor
Power Supply
Opening
Control Connection
See page 12 for Wiring
Field Wiring
Ground Conductor
Terminal
FIELD POWER WIRING
Models SAH3000, SAH4500 & SAH6000
CONNECT POWER SUPPLY DIRECTLY TO
ELEMENT TERMINALS!!!
CHART
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Max Room Wire Size
Model Volume KW Volts† Phase AMPS (AWG) for up to
No.
(Cu. Ft.*)
45˚ C Ambient
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208 1 15 12
SAH3000 65 3.0
240 1 13 12
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208 1 22 10
SAH4500 100 4.5
240 1 19 10
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208 1 29 8
SAH6000 150 6.0
240 1 25 8
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*See page 2 for room sizing.
SAH units are not available in 3 phase.
grounding wire. Neutral (white) wire is not required.
IMPORTANT NOTE: Provide a power supply disconnect
within sight of the steam generator or one that is capable of
being locked in the open position as permitted by code.