McQuay KZZ S03 Installation Manual
Installation and Maintenance IM 254-5
Hi-Line™ Fan Coil Unit
Model KZZ S03 through S08
Group: Fan Coil
Part Number: 667754200
Date: December 2005
© 2005 McQuay International
Contents
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Receiving and Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Risers (Field supplied & installed) . . . . . . . . . . . . . . . . . . . . . .2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Furring In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Ducts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Finishing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Twin Units Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Drain Pans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Fan and Motor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Electric Heater Troubleshooting . . . . . . . . . . . . . . . . . . . . . . 13
Electric Heater Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
McQuay and MicroTech II are registered trademarks of McQuay International.
Copyright © 2005 McQuay International. All rights reserved throughout the world.
General Information
McQuay HiLine fan coil air conditioning units are designed
for use in multiple floor apartments, office buildings, hotels,
and other similar applications. They require a minimum
amount of floor space and one unit may do the job that
formerly required more than one conventional unit.
The 300 through 800 cfm, blow-through configuration units
described in this manual are designed to meet individual room
control requirements. Two-pipe and four-pipe systems are
available, with single, double, triple, and top discharge
arrangements. Optional equipment is available to provide
complete application flexibility.
Installation and maintenance must follow accepted industry
practices as described in the ASHRAE Handbook, the National
Electric Code, and other applicable s t a n da r d s . Install this
equipment in accordance with regulations of authorities having
jurisdiction and with all applicable codes.
Installation and maintenance must be performed by qualified
personnel familiar with applicable codes and regulations and
experienced with this type of equipment.
CAUTION
SHARP EDGES ON SHEET METAL AND COIL SURFACES
if not avoided could result in cuts.
Figure 1: HiLine fan coil unit
Couplings
Risers
Discharge Air
Top Plenum
Cabinet
Controls
Access panel and
sound baffle
Coil
Receiving and Handling
Carefully check items against the bills of lading to verify all
crates and cartons have been received. The units normally ship
four to a pallet.
Carefully inspect all units for shipping damage. Report
damage immediately to the carrier and file a claim.
Check the electrical nameplate to be sure it agrees with the
power supply available.
DO NOT handle units by the riser piping. Riser clamps hold
the riser in position; they are not designed to support the
cabinet weight. They are removed after the unit is installed.
Filter
Return air grille panel
Motor and fan
assembly
Bottom Cabinet
Risers
Units are shipped with the top plenum cabinet and top plenum
front panel not assembled to the lower cabinet. KZZ units are
factory wired and have individual thermostat controls. They
are installed by stacking one unit on top of the other. While
installing, prevent dirt and other foreign matter from entering
the risers and plugging lines or valves.
McQuay IM 254-5 1
Installation
Risers (Field supplied & installed)
The coupling stub-outs must be properly positioned so that the
coil connections will line up when the units are placed in
position. Construct a fixture to maintain dimensions shown in
figure 2, during the soldering process.
• If field-supplied isolator pads are used, install them now.
This additional thickness must be considered before
installation of risers.
• The unit has provisions for plus or minus one inch of vertical
movement of risers. If the riser system movement exceeds
this value, compensating provisions must be provided by the
installing contractor.
• Anchor risers to the building structure to prevent vertical
riser movement greater than ±1" (25mm) due to riser
expansion or contraction. (Anchors by others).
CAUTION
The unit is not designed to support the weight of the risers.
Anchor them securely to the building structure.
Figure 2: Risers and stub-outs locations
• Care must be taken to prevent dirt and other foreign matter
from entering the risers as clogged lines or valves could
result.
• Close all ball valves on the coupling stub-outs and cement
joints to avoid condensation problems.
• Apply insulation to stub-outs and cement joints to avoid
condensation problems.
To c omply with existi ng building codes, the installing contractor must
restore the original fire resistance rating of the structure by sealing the
access space around the risers with material having the same fire
rating as the structure. This procedure is very important so that a seal
is provided between floors to prevent the passage of warm, humid air
which can cause condensation on riser insulation. This is most critical
in unpressurized buildings with high infiltration rates.
2 McQuay IM 254-5
Installation
Cabinet
1 Carefully separate the top plenum cabinet from the lower
cabinet so as not to tear the fiberglass insulation.
See Figure 3.
2 Separate the top plenum front panel from the lower cabinet.
3 The fasteners and parts needed for assembly are located in
the base of the lower cabinet. Remove the riser blockoffs,
sight baffle (if required), and the valve package supports.
The filter is located above the coil. See Figure 3.
Figure 3: Unit preparation for field assembly
Lower Cabinet
Filter
Serial Plate & Coil Location
Top Plenum Cabinet-
Front Panel
Top Panel
11 With the unit in the final location, check level to insure
proper condensate drainage and operation.
12 Fasten the top panel of the plenum by installing the three
sheet metal screws “A”. See Figure 4.
Figure 4: Installation of top plenum cabinet
“A”
Top Plenum Cabinet
Optional
Sight Baffle
Top Plenum Cabinet-
Front Panel
Fasteners & Parts
Location
Top Plenum Cabinet
4
Bend out the tabs used to support the top plenum cabinet to
the lower cabinet as shown in Figure 4.
5 Remove the appropriate riser and drain knockouts in the
lower cabinet. See Figure 4.
6 Slit the fiberglass insulation within the riser knockout
openings to allow the riser valves to protrude into the lower
cabinet.
7 Position the riser blockoffs over the riser stub-outs. See
Figure 5 on page 4.
8 Position the lower cabinet so it aligns properly with the
risers. See Figure 6b. Align the horizontal stub-outs so they
are centered within the knockout openings in the cabinet.
This is important to allow riser expansion and contraction
of plus or minus one inch.
9 Solder connections if sweat valves have been supplied.
10 Attach plastic drain hose to drain line. Be sure hose clamp
is properly installed.
Front Access
Panel
Riser Knockouts
(All Sides)
Support Tabs
13 Install the sight baffle (if required) to the top as shown in
Drain Knockout (All Sides)
Figure 4.
14 Place the top plenum cabinet on the lower cabinet. See
Figure 4 & 6c.
15 Fasten the top plenum cabinet to the lower cabinet with
sheet metal screws. See Figure 4.
16 Attach the top plenum cabinet - front panel to the top
plenum cabinet with sheet metal screws enclosed.
McQuay IM 254-5 3
Loading...