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2.
Before anchoring the equipment in place, the unit must
be leveled and the cabinet must be plumb and squared.
The unit may be anchored in place by bolting directly
through the unit floor or attaching to the cabinet in
some location that will not interfere with drywall or
other items such as the supply grille, thermostat, or
return access panel. When attaching to the unit cabinet,
care must be taken to not penetrate the cabinet in
locations that may damage internal components or
wiring. The mounting technique is a matter of choice;
however, the unit should always be anchored securely
to prevent movement during construction and riser
expansion and contraction.
After anchoring the unit, it is then ready for the various
service connections such as riser connections and
electrical.
3. The plastic flare caps on the end of the riser ball valves
should be removed and discarded.
4. All Universal Modular units use reinforced braided
stainless steel flexible hose kits for piping between field
installed risers and unit water coils as shown in Figure 7.
The hose kit design has threaded connections on each
end. The hose kits allow for riser fluctuations due to
thermal expansion.
5. Use a wrench to tighten the swivel connections. Use a
backup wrench to hold the riser ball valve stationary to
prevent it from bending or twisting during installation as
shown in Figure 8. Be careful to not over tighten swivel
connections.
CAUTION: Hose connection torque
requirements are 350 in. lbs. +10/-0 in. lbs. to
prevent leaks.
6. Locate the unit's coil fitting.
7. The plastic flare caps on the end of the coil fitting should
be removed and discarded.
8. Use a wrench to tighten the swivel connections. The
baffle acts as a secondary wrench. Be careful to not over
tighten swivel connections.
Modular Hi-Rise Series Fan Coils
INSTALLATION, OPERATION, & MAINTENANCE MANUAL
CAUTION: Hose connection torque
requirements are 350 in. lbs. +10/-0 in. lbs. to
prevent leaks.
9. Locate the p-trap drain and rubber hose factory installed
to the drain pan connection in the bottom of the unit as
shown in Figure 9.
10. Push the rubber drain hose over the riser drain stubout.
Be careful that you do not bend the drain stubout.
11. Adjust the hose clamp over the riser stubout and rubber
hose to hold in place as shown in Figure 9.
12. Test for leaks. Any and all leaks should be repaired before
proceeding with installation. When testing with air or
some other gas, it might be necessary to tighten stem
packing nuts on some valves to maintain air pressure
in the riser. Pressure testing risers with water should
be done with the unit service valves closed to prevent
flushing debris into the unit valve packages. This will
also allow risers to be drained down after testing in
the winter to avoid freeze-up problems. In the event
that leaking or defective components are discovered,
the sales representative must be notified BEFORE any
repairs are attempted. All leaks should be repaired
before proceeding with the unit installation.
13. After system integrity has been established, the riser
insulation must be pulled back into place over the joint
and glued or sealed to prevent sweating and heat loss or
gain. All of the risers including the riser stubouts should
be properly covered with insulation. Internally mounted
chilled water piping and valves are located over the drain
pan and need not be insulated.
Any fireproofing requirements where risers or piping
penetrate floors or walls are the responsibility of the
installer. This work should be done only after all pressure
testing is completed. The fireproofing method used must
accommodate pipe expansion and contraction and the
piping must be protected from abrasion and chemical attack.
The pipe insulation also must be maintained to prevent
sweating and must be protected from wear or erosion at the
joint between the insulation and the fireproofing material.
9
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