035-000051-002 Page 8 of 64 MMD IOM 1.3 8-15-2023
Pre-installation
1. Check items received against packing list.
2. Do not stack unit components or accesso-
ries during storage. Stacking can cause
damage or deformation.
3. If unit is to be stored for more than 2 weeks
prior to installation, observe the following
precautions:
a. Choose a dry storage site that is rea-
sonably level and sturdy to prevent un-
due stress or permanent damage to the
unit structure or components. Do not
store unit on vibrating surface. Damage
to stationary bearings can occur. Set
unit off ground if in heavy rain area.
b. Remove all fasteners and other small
parts from jobsite to minimize theft. Tag
and store parts in a safe place until
needed.
c. Cover entire unit with a tarp or plastic
coverall. Extend cover under unit if
stored on ground. Secure cover with
adequate tie-downs or store indoors.
Be sure all coil connections have pro-
tective shipping caps.
d. Monthly — Remove tarp from unit, en-
ter fan section through access door or
through fan inlet, and rotate fan and
motor slowly by hand to redistribute the
bearing grease and to prevent bearing
corrosion.
Rigging — Do not remove shipping skids or
protective covering until unit is ready for final
placement. Use slings and spreader bars as ap-
plicable to lift unit. Do not lift unit by coil connec-
tions or headers.
Do not remove protective caps from coil
piping connections until ready to connect
piping.
WARNING-AUXILIARY DRAIN PAN
RECOMMMENDED:
This product has an auxiliary condensate drain
which should be piped to a condensate overflow
sensor or safe drain location or both to protect
the equipment and property from damage in the
case of condensate overflow.
In addition, the International Mechanical Code
(IMC) section 307.2.3 requires the use of auxil-
iary drain pans. Many municipalities have
adopted this code.
This practice represents the standard for profes-
sional installation whether or not this code has
been adopted in a specific municipality or terri-
tory. As such, water damages that would have
been prevented had an auxiliary pan been de-
ployed will not be considered for compensation.
This position is taken regardless of whether the
source of the moisture was specified as a po-
tential failure mode in the applicable building
code or not. A freeze burst, cracked drain pan,
failed weld, or corrosion induced leak are some
of the potential failure modes that are mitigated
when an auxiliary pan is properly installed. Pro-
fessional installers recognize the value of pro-
tecting customer assets against foreseeable
events. Customers who choose to avoid the
cost of common protective measures waive their
right to seek damages when those foreseeable
events occur. If the product is located above a
living space or where damage may result from
condensate overflow, install a watertight pan of
corrosion-resistant metal beneath the unit to
catch over-flow which may result from clogged
drains or from other reasons. Provide proper
drain piping for this auxiliary pan. Consult local
codes for additional precautions before installa-
tion.
Unpackaging
1. Remove all packaging and any foreign mate-
rial from unit.
2. Check blower wheel for free rotation.
3. Check copper lines, coil etc. for internal or
hidden damage.
Return Air and Unit Orientation
Units may be positioned in several configura-
tions depending on the return air configura-
tion selected—see Figure 1.
NOTE: Right and left return units are not
recommended for horizontal installation.
Service Clearance
The fan coil is completely serviceable from
the front. Units are approved for 0” (zero
inches) of clearance. This allows substantial
freedom in the positioning of the unit to best
serve the requirements of the structure.
INSTALLATION
Unit Support
Floor mounting: Unit may be mounted on a
housekeeping pad, floor, platform or plenum.
Provide a suitable isolation pad to minimize
sound transmission to the structure. CAU-
TION! Make sure to allow enough eleva-
tion to permit construction of the conden-
sate trap. Also allow enough elevation
and clearance for opening the filter door
(removes to the front). See Service Clear-
ances.
Install the unit so that it is level or pitches
slightly –(1/8 inch) – toward the condensate
drain connection.
Anchor the unit to the plenum or platform
through the bottom flange using 2ea #10
sheet metal screws on each side (4 screws
total).
