Safety Considerations
SHW/SVW
:
Installation, Operation, and Maintenance Instructions
4
BLOWER COIL UNIT
The installer must adhere strictly to all local and national code requirements pertaining to the
installation of this equipment.
The SHW blower coil units are designed to be installed in a horizontal position with discharge air in
a horizontal direction. The SVW blower coil units are designed for installation in a vertical direction
with discharge air in a vertical position. Both units include a positive slope drain pan with 3/4” NPT
nipple that exits the unit on the side of the coil header connections. All units need to be leveled
such that the positive slope of the drain pan is directed towards the condensate drain nipple.
NOTE:
Before mounting unit: Remove red headed shipping bolts and metal bushing
at blower base and blower outlet. If present, also remove the wire tie
securing motor to blower rail.
Sufficient clearance must be provided on the side of the blower coil to allow access to electrical
controls and to service the motor blower assembly. Standard unit configuration is right hand
looking with the direction of airflow. The unit can be field converted to left hand by repositioning
the coil, drain pan, and corresponding slope bracket.
Standard vertical blower configuration is counter-swirl, with the motor facing in the same direction
as the supply and return headers of a right hand coil configuration. Vertical blower configuration
can be field converted by reposition blower and corresponding mounting brackets.
NOTES:
A field-fabricated secondary drain pan, with a drain pipe routed to the
outside of the building, may be required in installations over a finished
living space or in any area that may be damaged by water overflow
from the main drain pan. In some localities local codes may require a
secondary drain pan for any horizontal installation.
If a condensate overflow shut off switch, that is designed to be installed
in the drain line, is used in place of a secondary drain line then place
it in the primary drain line between the blower coil and the P-trap
MOUNTING
It is important to ensure that the blower coil unit is securely mounted and the structure is sufficient
to support the weight of the equipment. SHW blower coil models 90-120 are intended to be
mounted with a support angle or channel located under the unit. There are 7/8" knockouts
located at all four corners top and bottom which permits field supplied hanging rods to extend
through the unit to secure to the field supplied angle or channel. (See figure 1). All anchors for
mounting the equipment must be placed and sized to ensure a safe and durable installation.
When necessary use shims to obtain the proper level. This will ensure that the condensate will drain
from the unit.
