Multiaqua MHCCW-08 User manual

Rev. 1.2
MHCCW (115)

2
INSTALLATION & OPERATING
MANUAL
MHCCW Fan Coils 1- 3 Tons
ENCLOSURE
FAN
COIL
ENCLOSURE DIMENSIONS (in.)
PART NUMBER
SIZE
Depth
Length
Height
Weight (LBS.)
MPE468
4
32.75
39.75
11.00
26
MPE468
6
32.75
39.75
11.00
26
MPE468
8
32.75
39.75
11.00
26
MPE10
10
32.75
45.75
11.00
30
MPE12
12
32.75
51.75
11.00
34
Figure 2
GENERAL
Read the entire contents of this manual
before beginning installation. Multiaqua
assumes no responsibility for equipment
installed contradictory to any code
requirement or installation instructions.
The components of this fan coil have
been inspected at the factory and readied
for shipment. Upon receiving the
shipment a visual inspection of the
packaging must be performed.
If any damage to the packaging is
discovered, an inspection of the
components must be performed and
noted on the delivery documents. If
component damage is found a damage
claim must be filed by the receiving party
against the delivery party immediately.
This product is designed and
manufactured to permit installation in
accordance with national codes. It is the
installer’s responsibility to install the
product in accordance with national
codes and/or prevailing local codes and
regulations.
Care must be taken to ensure the
structural integrity of the supporting
members, clearances and provisions for
servicing, power supply, coil connections
and/or condensate removal. Before the
installation ensure the structural strength
of the supporting members is sufficient.
See Figure 1 for hanging weights of the
fan coils.
-------------------------------------- CAUTION --------------------------------------
Care must be taken when handling sheet metal. Sheet metal parts have sharp edges and could
cause injury.
This unit is designed to be installed in an
horizontal configuration only, and into an
enclosure assembly. The enclosure assembly
can be ordered separately or field fabricated
by the installing contractor. See Figure 2
for enclosure part numbers, dimensions and
weights. See Figure 3 for fan coil only
dimensions.
The coil hand of connection is field
reversible to left or right hand connection.
See Figures 4-6 for converting the coil hand
of connection.
FAN COIL
APPROXIMATED
MODEL NUMBER
WEIGHTS (LBS)
MHCCW-04
66.0
MHCCW-06
68.2
MHCCW-08
72.6
MHCCW-10
74.8
MHCCW-12
83.6
Figure 1

3
INSTALLATION & OPERATING
MANUAL
MHCCW Fan Coils 1- 3 Tons
FAN COIL DIMENSIONS
Fan Coil
A
B
C
D
E
F
Model Number
MHCCW04-XX
37.72
34.56
31.41
10.23
5.51
21.65
MHCCW06-XX
37.72
34.56
31.41
10.23
5.51
21.65
MHCCW08-XX
37.72
34.56
31.41
10.23
5.51
21.65
MHCCW10-XX
43.70
40.55
37.40
10.23
5.51
21.65
MHCCW12-XX
49.68
46.53
43.38
10.23
5.51
21.65
F
E
D
Water Return
Water Supply
1”
.75” (MPT)
Condensate
Drain Connection
(Both Ends)
.5”
Air Vent
Coil Drain
B
C
A
Drain Pan
Mounting Notches
Figure 3
Figure 3

4
INSTALLATION & OPERATING
MANUAL
MHCCW Fan Coils 1- 3 Tons
Figure 4
INSTRUCTIONS FOR
CONVERTING COIL HAND
CONNECTION (Left or Right)
& ELECTRIC HEATER
ACCESS.
1. Remove the eleven screws that
attach the top to the fan coil
assembly and remove the top.
This will allow you to access the
electric heaters.
Figure 4
2. Remove the eight screws that
hold the coil into the fan coil
frame assembly. Four screws per
side. Figure 5
3 Slide the coil out of the fan
coil frame assembly toward the
coil supply and return line
connections. Ensure that care is
taken when removing and
inserting the coil not to damage
the coil fins. Insert the coil into
the fan coil frame assembly from
the other end and reverse
procedures 4 & 5 to reassemble
the fan coil.
Figure 6
Figure 5
Figure 6
-------- CAUTION -------
Care must be taken when
handling sheet metal. Sheet
metal parts have sharp edges
and could cause injury.

5
INSTALLATION & OPERATING
MANUAL
MHCCW Fan Coils 1- 3 Tons
Figure 7
INSTRUCTIONS FOR
INSTALLING FAN COIL
UNIT INTO ENCLOSURE
ASSEMBLY
1. Remove the ten screws that
attach the electrical assembly to
the fan coil unit. Do not separate
the electrical assembly from the
blower assembly. These two
assemblies will be removed in the
next step. Figure 7
2. Remove the five screws
attaching the blower assembly to
the coil assembly. Separate the
electrical and blower assemblies
from the coil assembly.
Figure 8
3. Insert the coil assembly into
the enclosure assembly starting
with the discharge air opening
of the coil first. Ensure that the
discharge of the coil is inserted
into the discharge of the
enclosure completely. Failure to
completely insert the coil
discharge will result in
recirculation of the discharge air.
Figure 9
Figure 8
Figure 9

6
INSTALLATION & OPERATING
MANUAL
MHCCW Fan Coils 1- 3 Tons
Figure 10
Figure 11
Figure 12
4. Align the fan coil mounting
bolts up with the four fan coil
mounting notches provided in the
coil assembly top. Secure the coil
assembly to the enclosure with
two mounting bolts per side.
Ensure that the coil assembly is
level in both directions to allow
proper drainage and operation.
Figure 10
5. Reinstall the blower assembly
onto the coil assembly using the
five screws previously removed
in step 2 Figure 8.
Figure 11
6. Reinstall the electrical
assembly onto the coil assembly
using the ten screws previously
removed in step 1 Figure 7.
Figure 12
ELECTRICAL, COIL, DRAIN
AND RETURN / SUPPLY AIR
LOCATIONS
7. There are multiple entry points
on the factory supplied enclosure
assembly for water lines,
condensate lines, refrigerant lines
and electrical connections. If a
non-louvered service access panel
is used or if an alternate return air
location is required, an optional
return air cutout is provided.
Figure 13

7
INSTALLATION & OPERATING
MANUAL
MHCCW Fan Coils 1- 3 Tons
ELECTRICAL &
CONDENSATE DRAIN
8. There are four termination
points for the electrical wiring.
There are two on each side of the
electrical box. See Wiring
Diagrams for electrical drawings.
Wiring must be installed according
to prevailing codes and regulations.
The fan coil unit has one
condensate drain connection on
either side of the drain pan for
either left or right hand drain
connection. The opposite drain
connection not being used must be
capped off by the installing
contractor. The middle drain
connection is the safety condensate
drain connection. Ensure that all
condensate drain lines have at least
one quarter of an inch of fall per
foot for proper drainage.
Figure 14
WATER COIL CONNECTIONS
9. The fan coil unit comes with a
manual air bleed and a manual coil
drain fitting. They are located on
the same side as the supply and
return water line connections. The
water supply line is connected to
the coil connection furthest away
from the fans. The water return line
is connected to the coil connection
closest to the fans. Ensure that both
the supply and return water lines
are insulated to prevent them from
sweating. Figure 15
Figure 13
Figure 14
Figure 15
Manual Air Bleed
Manual Coil
Drain
Water Supply Connection
Water Return Connection
Electrical Terminations Points
Safety Drain Connection
Left and Right Hand Drain Connections
Entry Points
Typical Both Ends
Optional Return
Air Cutout

8
INSTALLATION & OPERATING
MANUAL
MHCCW Fan Coils 1- 3 Tons
RETURN AND SUPPLY AIR CONNECTIONS
10. When mounting the service access panel, louvered or non-louvered, the installing contractor
must provide a frame in order to connect the enclosure assembly to the service access panel.
This is required to obtain an airtight seal for the return air. Ensure that the material used for the
frame adheres to national codes and / or local codes and regulations. Care must be taken when
installing the service access panel to ensure the opening of the hinged service panel.
Figure 16 & 17
11. Filters are not supplied with the fan coil unit or the service access panel. The filter(s) must be
supplied by the installing contractor. If a louvered service access panel is used, the filter will mount
on the under side of the hinged access panel. If the optional return air cutout is used it is
recommended that a return air filter grille be used that has the same surface area as the
recommended filter sizes. Figure 18

9
INSTALLATION & OPERATING
MANUAL
MHCCW Fan Coils 1- 3 Tons
SERVICE ACCESS PANEL DIMENSIONS
Louvered & Non-Louvered
Panel Model Number
Fan
Coil
Size
A
B
C
(in)
(in)
(in)
MAP468L(NL)
4
43.25
27.5
1.5
MAP468L(NL)
6
43.25
27.5
1.5
MAP468L(NL)
8
43.25
27.5
1.5
MAP10L(NL)
10
49.25
27.5
1.5
MAP12L(NL)
12
55.25
27.5
1.5
Figure 18
FAN COIL
MODEL
NUMBER
RECOMMENDED FILTER
SIZES
Width (in)
Length (in)
MHCCW04
18
36
MHCCW06
18
36
MHCCW08
18
36
MHCCW10
18
36
MHCCW12
2 qty 18
24
B
A
C
(type)
Figure 17

10
INSTALLATION & OPERATING
MANUAL
MHCCW Fan Coils 1- 3 Tons
SUPPLY AIR DUCT FLANGE
Enclosure Model Number
Fan
Coil
Size
A
B
(in)
(in)
MAP468L(NL)
4
6
31.75
MAP468L(NL)
6
6
31.75
MAP468L(NL)
8
6
31.75
MAP10L (NL)
10
6
37.75
MAP12L (NL)
12
6
43.75
Figure 19
12. The fan coil enclosure assembly has a supply air duct flange to allow the attachment of ductwork.
Ensure when attaching ductwork to the flange, that the screws are at least one and half inches away from
the front of the enclosure. This is to allow proper insertion of the fan coil assembly into the enclosure
assembly when duct work will be installed before the fan coil is installed.
Figure 19
A
B

11
INSTALLATION & OPERATING
MANUAL
MHCCW Fan Coils 1- 3 Tons
MAINTENANCE
1. Air Filter(s):
Filters are an essential part of
the quality of air that is
provided to the occupants.
Never operate HVAC
equipment without filters.
Filters help remove dust and
unwanted particles from the air
stream, helping to keep the
space clean. They also keep this
debris from collecting on the
heat transfer surfaces of the
unit thus maintaining optimum
equipment efficiency and
performance. These filters will
be located either in the unit or
upstream from the unit in the
return air ductwork. Filters
must be inspected, cleaned
and/or changed routinely. This
routine maintenance procedure
will allow the unit to
continually operate as designed,
reduce service expenses and
extend equipment/component
life.
2. Fuses and/or Circuit
Breakers:
This unit must be connected
to the buildings electric service
in accordance with
local/national electrical codes
and regulations. These
electrical connections will
include over current protection
in the form of fuses or circuit
breakers. Have your contractor
identify/label the circuits and
the location of them so that you
may be in a position to make
inspections
and/or replacements in the event the
unit fails to operate or is being
serviced. If fuses are used, ensure
that the replacement fuses are of the
same size and type as the ones you
are replacing. It is a good idea to
keep replacement fuses of the
appropriate size and type on hand.
3. Routine Check Up and Service:
This product is designed to
provide many years of dependable,
trouble free comfort when properly
maintained. Proper maintenance
will consist of routine filter
cleanings/changes, bi-annual check-
ups that include but not limited to
filter inspections, electric heater
inspections /cleaning of the internal
electrical and heat transfer
components by a qualified service
technician. Failure to provide
periodic checkups and cleaning can
result in excessive operating cost
and/or equipment failure.