Armstrong Air 4SCU 16LS Series, Инструкция по установке и обслуживанию

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506859-01 Issue 1236 Page 3 of 32
Roof Mounting
Install unit at a minimum of 4” above surface of the roof.
Locate the unit above a load bearing wall or area of the roof
that can adequately support the unit. Consult local codes
for rooftop applications.
Electrical Wiring
All field wiring must be done in accordance with the National
Electrical Code (NEC) recommendations, Canadian
Electrical Code (CEC) and CSA Standards, or local codes,
where applicable.
Refer to the furnace or blower coil installation instructions
for additional wiring application diagrams and refer to unit
rating plate for minimum circuit ampacity and maximum
overcurrent protection size.
Slab Mounting
When installing a unit at grade level, install on slab high
enough above grade so that water from higher ground will
not collect around the unit (See Figure 2).
Line voltage is present at all components when unit is
not in operation on units with single pole contactors.
Disconnect all remote electric power supplies before
opening access panel. Unit may have multiple power
supplies. Failure to disconnect all power supplies could
result in personal injury or death.
WARNING
Unit must be grounded in accordance with national and
local codes. Failure to ground unit properly can result
in personal injury or death.
WARNING
Figure 2
Slab Mounting