McQuay KZZ Installation Manual
Installation & Maintenance Data IM 254-4
Group: Fan Coil
Part Number: 107133000
Date: June 1999
SeasonMaker
™
HiLine Fan-coil Units
Type KZZ
Contents
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Riser Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Unit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3, 4
Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
©1999 McQuay Incorporated
Installation and maintenance are to be performed only by qualified personnel who are familiar with and in
compliance with state, local and national codes and regulations, and experienced with this type of equipment.
Caution: Sharp edges and coil surfaces are a potential injury hazards. Avoid contact with them.
Inspection
When the equipment is received, all items must be carefully
checked against the bill of lading to be sure all crates and
cartons have been received. The units are shipped four to a
pallet. Visible or concealed damage should be reported
Riser Installation
(Field Supplied & Installed)
1. It is critical that the coupling stub-outs are properly
positioned so that the coil connections will line up when
the units are placed in position. See Figure 2. It is recommended that a fixture be constructed to maintain dimensions shown in Figure 2 during the soldering process.
2. If isolator pads are required, this additional thickness
must be considered before installation of risers.
3. Due to expansion or contraction, the unit has provisions
for plus or minus one inch vertical movement of risers. If
the riser system movement exceeds this value, compensating provisions must be provided by the installing contractor.
4. Risers must be anchored to the building as there is no
provision on the unit to support the weight of the risers.
5. Care must be taken to prevent dirt and other foreign
immediately to the carrier along with the filing of a claim for
damage. The electrical nameplate should be checked to be
sure it agrees with the power supply available. See Figure 1
below.
matter from entering the risers as clogged lines or valves
could result.
6. Close all ball valves on the coupling stub-outs and cement
joints to avoid condensation problems.
7. Apply insulation to stub-outs and cement joints to avoid
condensation problems.
8. To assure compliance with existing 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
at the structure. This procedure is very important also in
assuring 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.
Figure 1. Uncrating Figure 2. Field riser locations
20"
(508 mm)
(Cabinet)
11/32"
(9 mm)
Plaster
1/16"
(2 mm)
Stop
3-1/4"
(83 mm)
(89 mm)
43-1/2"
(1105 mm)
3-1/2"
3-5/8"
(92 mm)
(508 mm)
3-1/2"
(89 mm)
Htg. Supply
2-Pipe
System
20"
Clg. Supply
Htg. Return
3-1/2"
(89 mm)
Clg. Return
3-1/8" (79 mm)
2-3/4" (70 mm)
Page 2
XXX 3/8" (9.5 mm)
YYY 3/4" (19 mm)
Floor
Drain
Unit Installation
Riser
Blockoffs
Drain Blockoff
Drain Riser
1. The KZZ HiLine fan-coil units have been received with
the top plenum and plenum front cover not assembled
to the lower cabinet (see Figure 3).
2. Care should be taken when removing the top plenum
from the lower cabinet so as not to tear the fiberglass
insulation.
3. Remove the plenum front panel from the lower cabinet.
4. The fasteners for assembling the unit, the riser blockoffs,
and sight baffle (if required) are located in the base of the
lower cabinet. The filter is located above the coil. Remove these parts from the unit. Remove the valve package supports.
5. For ease of installation, bend out the tabs that support
the top plenum to the lower cabinet (see Figure 5).
6. Place the riser blockoffs over the riser stub-outs (see
Figure 4).
7. Remove the appropriate riser and drain knockouts in the
lower cabinet (see Figure 5).
8. Slit the fiberglass insulation so that the riser valves can
be pushed through and into the unit.
9. Position the lower cabinet to the risers. The horizontal
stub-outs should be centered in the opening in the
cabinet. This is important to allow for riser expansion
and contraction of plus or minus one inch.
10. Solder connections if sweat valves have been supplied.
11. Attach plastic drain hose to drain line. Be sure hose
clamp is properly installed.
12. With the unit in the final location, check level to insure
proper condensate drainage and operation.
13. Fasten the top panel of the plenum by installing the three
sheet metal screws “A” (see Figure 6).
14. Install the sight baffle (if required) to the top as shown in
Figure 6.
15. Place the top plenum on the lower cabinet (see Figure 6).
The top plenum can be installed so that the discharge
opening is facing to the left, the right, or to the front.
Knockouts are provided for additional discharge arrangements. If plenum is to be rotated to the left or right,
the thermostat box can be moved to an alternate location by removing the optional cover plate. When the
thermostat is moved to the alternate location the cover
plate must be insulated and reinstalled in the previous
location. Determine the correct discharge before installing the plenum to the lower cabinet.
Although the plenum may be rotated 90° in either
direction, the thermostat box and heat baffle must
always be located above the return air grille on units with
electric heat.
16. Fasten the top plenum to the lower cabinet with sheet
metal screws (see Figure 6).
17. Before fastening the plenum front panel to the plenum
wrap, snap the nylon electrical receptacle into the square
hole into the back of the thermostat box (see Figure 7).
18. Attach the plenum front panel to the plenum wrap with
sheet metal screws enclosed.
19. The thermostat box has been installed in the plenum
front panel in the position that will allow plasterboard to
be attached directly to the unit. If the installation requires
that the wall be furred out away from the unit, the box can
be adjusted out 3
7
⁄8" (98 mm) by removing the four
screws “A” (see Figure 8) and pulling the box out. Align
with holes “C”. Replace screws “A”. If a dimension other
than the 3
7
⁄8" (98 mm) or 3⁄8" (10 mm) is required, this can
be accomplished by using the angle bracket as a template and drilling .149" (4 mm) diameter holes in the box
at the desired depth.
20. When the plasterboard or other wall material does not fit
flat against the face of the unit, extension sleeves must
Figure 3. Unit preparation for field assembly Figure 4. Riser blockoff placement
Lower Cabinet
Serial Plate
Top Front Panel
Top Plenum
Page 3
Loading...