Company UCQB Series Installation Manual

****** WARNING ******
When connecting piping to
fan coil units, do not bend or
reposition the coil header tub-
ing for alignment purposes.
This could cause a tubing frac-
ture resulting in a water leak
when water pressure is applied
to the system.
HOT WATER COIL
PIPING PRECAUTIONS
• Flush all field piping prior to connection
to remove all debris.
• Use wet cotton rags to cool valve bod-
ies when soldering.
• Open all valves (midway for hand
valves, manually open on motorized
valves) prior to soldering.
•When soldering to bronze or brass, heat
the piping while in the socket/cup and
begin introducing the solder when the
flux boils rapidly. Avoid direct flame into
the solder joint.
• Heat can only be applied to the cup of the
valve body for a minimal time before
damage occurs (even with the use of wet
rags.
• Avoid rapid quenching of solder joints
as this will produce joints of inferior qual-
ity.
Figure 3
DETAIL OF WALL PANEL FRAME
INSTALLATION
INSTALLED UNIT
TOP VIEW
Figure 2
2 X 4
WALL STUD
SCREW
DRY WALL
WALL PANEL
FRAME
• Connect all piping per accepted indus-
try standards and observe all regula-
tions governing installation of piping
systems. When all connections are
complete the system must be pressure
tested. Repair any solder joint leaks and
gently tighten any leaking valve packing
nuts and piping accessories as re-
quired. Hydronic systems are not de-
signed to hold pressurized air and
should only be tested with water.
HOT WATER COIL PIPING
Refer to the figure 4 for typical piping
for an Aqua Therm System.
The hot water coil connections are 3/
4 inch nominal (7/8” OD) copper. The hot
water supply to the fan coil should be on
the right when facing the fan coil upright
and from the front.
Isolation Valves - Two valves are
recommended to be installed within the
circulating loop to permit servicing
of the system if required and to assist in
purging the system.
NOTE: Hot water coil freeze protection
is available for applications where the
fan coil is located in ambient air loca-
tions (attics, crawl spaces, etc.) or within
structures that may be unoccupied dur-
ing freezing conditions. Consult the fac-
tory for additional information.
OPERATION AND
MAINTENANCE
Pre-start Check
• Check that supply voltage matches
nameplate data.
• Ensure that the unit is properly
grounded.
• With power off, check blower wheel
set screw for tightness and ensure that
the blower wheels rotates freely and
quietly.
• Check that the refrigerant coil connec-
tions and piping have been leak checked
and insulated as required.
• Check that the water coil, valves and
piping have been leak checked and in-
sulated as required.
• Ensure that all air has been vented
from the hot water coil.
NOTE: It may require purging several
gallons of water so have a means of
discarding the water.
• Install all panels.
• Install any filters which may have
been removed during the installation
process.
****** WARNING ******
An expansion tank may be re-
quired if a back-flow preventer
is installed in the system.
All piping between the water heater
and fan coil unit should be copper and
should not exceed 200 feet of total pip-
ing. It is recommended that 3/4” nominal
(7/8” OD) piping should be used on all
UCQ units to prevent excessive head
pressure losses. (Consult the factory for
other piping applications.)
It is also recommended that all pip-
ing be adequately insulated to prevent
freezing when piping is run in an uncon-
ditioned space.
Solder Connections - All copper
joints in the water lines must be made
with low temperature - non lead
solder.
"T" Connections (at the water
heater)-
Water lines to and from the fan coil unit
must be taken from the horizontal con-
nection of the "T" fittings in the vertical hot
and cold water supply lines at the water
heater. This ensures that any air in the
system will be purged each time water is
used in the dwelling. See figure 4.
DRY WALL
2 x 4 WALL STUD
SUCTION LINE
LIQUID LINE
POWER
SUPPLY WIRING
THERMOSTAT WIRING
CROSS MEMBER
(ON EDGE)
UC WALL PANEL FRAME
(PANEL ASSEMBLY IS
ORDERED SEPARATELY)
WATER
OUTLET
WATER
INLET
Note: Front edge of unit to
be flush with dry wall.