Company UCQB Series Installation Manual

****** WARNING ******
• Always wear eye protection.
• When fan coil is operating,
some components are operating
at high speeds. Personal injury
can result from touching these
items with any object
• All electrical and service
access panels must be returned
and secured in their proper place.
• Clear surrounding area of all
tools, equipment and debris.
• Check the entire unit to ensure
it's cleanliness.
Start-up and Maintenance
Before start-up, all of the components
should be given a thorough check. Op-
timal operation of this equipment re-
quires cleanliness. Often after
installlation of this equipment additional
construction activities occur. Care must
be taken to protect the equipment from
debris during these construction
phases.
Fan
The fan should be inspected and
cleaned, in conjunction with mainte-
nance of the motor and bearings. It is
important to keep the wheel clean in
order to avoid imbalance and vibration.
Motor
Check motor connections to ensure
that they are secure and made in accor-
dance with the wiring diagram.
Caution: High efficiency
brushless DC motors are wired with
power applied at all times (X13 for ex-
ample), see illustration next page. Low
voltage thermostat demand will control
its use.
The blower motor should be cleaned
annually.
Coil
Any dust or other contaminants which
accumulate on the heat transfer sur-
faces interferes with the air flow and
impairs heat transfer. The coil must be
kept clean by any of the following meth-
ods.
• Cleaning with low pressure com-
pressed air.
• Flushing or rinsing with water (a deter-
gent is advisable for greasy surfaces).
****** WARNING ******
The manufacturer does NOT
WARRANT equipment sub-
jected to abuse. Metal chips,
dust, drywall tape, paint over
spray, etc. can void warranties
and liability for equipment fail-
ure, personal injury and prop-
erty damage.
Filter
The air filter should be cleaned or re-
placed every 30 days or more frequently
if severe conditions exist. Always re-
place the filter with the same type as
originally furnished.
Drain Piping
The drain should always be:
• Connected or piped to an acceptable
disposal point sloped away from the
unit at least 1/8" per foot
• Checked before summer operation
• Periodically checked during summer
operation
Preventative Maintenance
To achieve maximum performance
and service life of each piece of equip-
ment a formal schedule of regular main-
tenance should be established and
maintained by a licensed contractor.
HEATING CYCLE
START - UP
1) Fill the water heater. Open a hot water
faucet while filling the water heater to
vent the air. When the tank is full and
all the air is purged, close the faucet.
2) Ignite the water heater and set the
thermostat to 140 degrees.
3) Purge the air handler's hot water coil
and lines.
NOTE: It may require purging several
gallons of water so either have a
bucket available or a means of dis-
carding the water.
Close valve number 1 and open valve
number 2. (See figure 4) Next, open
the air bleed valve. When all of the air
is purged from the lines close valve
number 2 and open valve number 1.
After all the air is purged from the coil
and lines, open both valve number 1
and 2 and close the air bleed valve.
4) Switch the room thermostat to the
****** WARNING ******
To prevent pump damage, the
fan coil unit should not be
energized for heating until the
hot water coil and all water
lines have been purged of air.
"Heat" position and raise the tem-
perature setting to a position approxi-
mately ten degrees above room tem-
perature.
The pump should energize and be-
gin circulating the hot water through
the coil. If the pump is operating
properly and the water temperature
in the water heater has reached the
set point, then the hot water inlet at the
****** WARNING ******
Hot water can cause scalding.
A hot water mixing valve can
be applied to the system to
temper domestic water draw.
fan coil unit will be hot. If the pump is
running but hot water is not circulat-
ing, open the air bleed valve long
enough to purge any remaining air
from the hot water lines and coil. This
will allow the pump to begin circulat-
ing hot water.
5) The water heater thermostat should
be adjusted so that the water tem-
perature entering the hot water coil is
as close to 140 degrees as possible
with the system energized and oper-
ating long enough for all tempera-
tures to stabilize.
PUMP REPLACEMENT
Disconnect electrical power before
servicing the unit.
To replace the circulator pump, close
the isolation valves and relieve the water
pressure within the heating loop. Dis-
connect the pump's 115 volt power lines
within the control box and remove the
four hex head screws securing the pump
motor to the pump's volute.
Reverse the above steps for reas-
sembling the pump, however make sure
that the pump or volute has the rubber o-
ring in place before assembling.