Heatcontroller A-VFH42PA-1 User Manual
INSTALLATION, OPERATION
& MAINTENANCE MANUAL
InverterFlex® Series
Outdoor Ductless Mini-Split
Heat Pumps
A-VFH18DA-1
A-VFH24TA-1
A-VFH30QA-1
A-VFH36QA-1
A-VFH42PA-1
Heat Controller • 1900 Wellworth Ave. • Jackson, MI 49203 • (517)787-2100 • www.heatcontroller.com
VFH InverterFlex® - Outdoor Ductless Mini-Split Heat Controller
TABLE OF CONTENTS
Safety Precautions
Warnings and Cautions............................................. 3
Introduction
Model Nomenclature.................................................4
System Application....................................................5
Installation Instructions
Installation Location Selection............................... 6-7
Outdoor unit installation..........................................8-9
Condensate Drain......................................................9
Refrigerant Line Installation
Refrigerant line set installation............................ 10-15
Leak test, evaluation and release of refrigerant....... 16
Electrical Work
Electrical Precautions.............................................16
Unit wiring........................................................... 17-21
Initial Start Up and Checks
Field charging and Final Inspection ................... 21-23
!
Caution
• Contact an authorized service technician for repair or maintenance of
this unit
• Contact an authorized installed for installation of this unit.
• Installation work must be performed in accordance with local and
national electrical codes and standards by authorized personnel only
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Heat Controller VFH InverterFlex® - Outdoor Ductless Mini-Split
• Read the follow SAFETY PRECAUTIONS carefully before installation.
• Electrical work must be performed by a licensed electrician. Be sure to use the correct rating of the power
cord and main circuit for the model to be installed.
• Incorrect installation due to ignoring the instruction will cause harm or damage.
n The seriousness is classied by the following indications.
WARNING!
!
CAUTION!
!
The items to be followed are classied by the symbols:
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to property.
This symbol denotes procedure that is PROHIBITED.
WARNING!
!
1) Do not install without an authorized servicer/installer.
2) Install according to this installation instruction. If installation is defective, it can cause water leakage or
electrical shock/re.
3) Use the supplied accessories and specied parts for installation.
4) Install the outdoor unit on a raised concrete pad or blocks to provide a solid, level foundation. In a
location with high winds, anchor the unit and provide an air bafe. In snowy areas (for heat pump
models), install the outdoor unit on a raised platform higher than drifting snow. Provide snow vents, and
awning over the unit.
5) For electrical work, follow local and national electric codes and these installation instructions. An
independent must be used. If defects in the electrical work, will cause electrical shock or re.
6) Use the specied cable and connect tightly. Clamp the cable so that no external force will stress the
connections. Loose wiring may overheat at the connection points and create a possible re hazard.
7) Wiring routing must be properly arranged so that control board cover is xed properly. If control board
cover is not xed perfectly, it will cause overheating at connection point of terminal, re or electrical shock.
8) When charging the unit, take care not to let air/substances other than the specied refrigerant
go into refrigeration circuit. Otherwise, it will cause lower capacity, abnormal high pressure in the
refrigeration circuit, explosion and injury.
9) Do not modify the length of the power supply cord or use an extension cord, and do not share
the single outlet with other electrical appliances. Otherwise, it will cause re or electrical shock.
CAUTION!
!
1) This equipment must be grounded. It may cause electrical shock if grounding doesn’t comply with local/
national electric codes.
2) Do not install the unit in a place where leakage of ammable gas may occur. If gas leaks and
accumulates near the unit, it may cause re.
3) Provide proper condensate drainage per the installation instructions. If not done properly, condensate
can destroy personal property and freeze up in improperly on the unit.
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VFH InverterFlex® - Outdoor Ductless Mini-Split Heat Controller
Inverter Series System Introduction:
The InverterFlex series allows one outdoor unit to match with up to ve indoor units, depending on capacity. The
model nomeclature of the outdoor unit denes the number of available base valves to connect indoor unit. For
example a Tri-zone unit can accept up to 3 zones or three indoor units.
Indoor units available for use with these particular outdoor models use the following nomenclature:
A variety of indoor model types can be used
with the outdoor unit, including ductless high
wall mini-splts, ceiling cassettes, ducted air
handlers, oor/ceiling mount, and console units.
Refer to the indoor Installation, Operation, and
Maintenance manuals of each model for further
details. NOTE: Depending on the type of indoor
unit selected, the method of controlling and
operating it may vary from a wireless remote
control to a wired wall thermostat/control, or both.
A - V F H 18 D A - 1
B=INDOOR
H=HEAT PUMP
FLEX
Series
V=INVERTER
DASH
CAPACITY
KBTU/H
18
24
30
36
42
0=115V
1=230V
DASH
REVISION
LETTER
TYPE OF INDOOR UNIT
D=Dual (2) Zones
T=Tri (3) Zones
Q=Quad (4) Zones
P=Penta (5) Zones
B - V F H 09 M A - 1
B=INDOOR
H=HEAT PUMP
FLEX
Series
V=INVERTER
DASH
CAPACITY
BTU/H
09
12
18
0=115V
1=230V
DASH
REVISION
LETTER
TYPE OF INDOOR UNIT
M=Mini-Split Ductless High Wall
C=Ceiling Cassetts
D=Ducted Air Handler
U=Universal Mount (Floor Ceiling
Mount)
F=Floor Mount Console
Outdoor Nomenclature A-VFH18DA-1
Indoor Nomenclature B-VFH09MA-1
EXAMPLE OF TRI-ZONE SYSTEM
Outdoor Unit
Cassette Type
Indoor Unit
Wall Mounted
Indoor Unit
Duct Type Indoor
Unit (Rectangular
air outlet)
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Heat Controller VFH InverterFlex® - Outdoor Ductless Mini-Split
Inverter Series System Introduction:
System Selection:
The total capacity of ALL the indoor units can not
exceed 150% of the capacity of the outdoor unit.
However, we recommend sizing the indoor unit’s
total capacity to be less than or equal to 100% of
the outdoor unit’s capacity. If sized beyond 100% of
the outdoor unit’s capacity, when all the indoor units
receive a call for cooling/heating, the entire system
will still only be able to achieve the rated capacity. of
the outdoor unit The inverter compressor can run at
a higher frequency but may not provide full capacity
to all indoor units. Sizing above 100% is usually done
because one or more indoor units may not be in use
the majority of the time.
Additionally, the total capacity of all indoor units cannot
be less than 50% of the outdoor unit’s capacity.
System Application:
This system is not designed to be a sole source of
heat for a home/building. While the units can operate
in low ambient conditions, they cannot provide the full
rated capacity for heat at low outdoor temperatures. An
additional heat source may be required in areas such
as the northern USA and Canada during the winter.
This system must be run in modes that do not conict.
For example, one indoor unit cannot be run in cool
mode and another indoor unit in heat mode. All indoor
units modes must be harmonized for the system to
properly operate. The fan mode can run in conjunction
with any other mode, while the cooling mode can be
run in conjunction with the dehumidication mode.
However all other modes must match among the
indoor units.
Liquid Receiver
Outdoor Unit
NOTE: The number of indoor units may vary depending on the capacity of the outdoor unit. This is an
example of a ve (5) zone system.
Electronic
Expansion Valve
Indoor Unit
Heat Exchanger
Heat Exchanger
System Schematic
Heat Exchanger
Stop
Valve
Heat Exchanger
Heat Exchanger
Heat Exchanger
5
Capillary
Compressor
Gas/Liquid Separator
Four Way Valve
Oil Separator
Heating
Cooling
VFH InverterFlex® - Outdoor Ductless Mini-Split Heat Controller
Selecting installation place
Choose a location that places the outdoor unit as
close to the indoor unit as possible. The maximum
unit separation and vertical lift (distance compressor is
above the evaporator) must be taken into account. Do
not exceed allowable refrigerant line lengths.
Outdoor unit
• Unit must be installed in a location that does not
obstruct the airow and ensures clearance are
maintained (Fig. 1)
• If installation location allows the unit to be exposed
to strong winds (such as coastal applications),
ensure that the unit has a wind barrier. This will
assist with preventing strong gusts of wind from
entering the unit’s cabinet and interfering with the
Fig. 1
fan operation. (Fig. 2 and Fig. 3)
Fig. 2
Min. 1.5ft.
(500mm)
Min. 6.5ft. (2000mm)
(Air outlet side)
CorrectIncorrect
Min. 3.5ft.
(1000mm)
Min. 1.5ft.
(500mm)
(Air inlet side)
Min. 1.5ft. (500mm)
Space to the wall
Fig. 3
Correct
Incorrect
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Heat Controller VFH InverterFlex® - Outdoor Ductless Mini-Split
• Avoid areas where water, snow, or ice may fall from
the roof onto the unit.
• In climates where snow is a consideration, locate
the unit away from areas prone to drifting.
• Ensure the location of the unit will not be subject
to snow drifts, heavy accumulation of snow or
leaves or other seasonal debris. If such a location is
unavailable, provide an awning for the unit. (Fig. 4
and Fig. 5)
1. An awning can be built over the outdoor unit
to prevent direct sunlight, rain exposure, or
snowfall.
2. Ensure that the awning does not impede the
unit’s required clearances or obstruct air ow.
Rooftop installation
• If the outdoor unit is installed on a roof structure, be
sure to level the unit.
• Ensure the roof structure and anchoring method are
adequate for the unit location.
• Consult local codes regarding rooftop mounting.
3. The awning should be at least 2 ft. (0.6m) away
from the top of the unit’s housing.
• Ensure free ow of air into and out of the unit. All air
inlet/outlets should be free of obstructions such as
walls and shrubs. Minimum clearances should be
maintained. (Fig. 1)
• During heating and defrost modes (heat pump
models only), the condensate should be properly
drained away from the unit. • Do not locate two or
more units in any way that will block discharge air
from one unit to another. Be certain that hot air from
one unit will not blow into a nearby unit to prevent
recirculation or discharge air. (Fig. 6)
Fig. 4
Obstacles
Fence or
Min. 6.5ft (2000mm)
Fig. 6
Min. 1.5ft (500mm)
Min. 1.5ft (500mm)
Fig. 5
Min. 3.5ft (1000mm)
(Service space)
• If the outdoor unit is installed on roof structures
or external walls, excessive noise and vibration
may result, and may also be considered a nonserviceable installation.
• Oil traps must be made in the refrigerant line set
(every 10 ft.) when the outdoor unit is located above
the indoor unit.
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VFH InverterFlex® - Outdoor Ductless Mini-Split Heat Controller
Outdoor Unit Installation
• In a snowy area, slab should be higher than drifting
• Install the outdoor unit on a rigid base (such a
concrete slab) to prevent increasing noise level and
vibration.
• Use a raised concrete pad or concrete blocks to
provide a solid, level surface. Securely anchor the
unit down with bolts.
snow.
• See outdoor installation location information
on pages 6 and 7 for more details and required
clearances.
Anchoring outdoor unit
FIG. 7 18KBTU/H
32.09 in. (815mm)
35.39 in. (899mm)
21.65 in. (550mm)
15.5in. (343mm)
12.44 in. (316mm)
14.88in. (378mm)
Anchor the outdoor unit to the concrete
slab with lag bolts or similar size, may
vary by model.
NOTE: Lag bolts are eld provided and do
not come with the unit.
Refer to unit’s mounting footprint for
mounting hole locations (Fig. 7 - 10)
23.46 in. (596mm)
FIG. 8 24KBTU/H, 30KBTU/H
35.12 in. (892mm)
37.24 in. (946mm)
22.05 in. (560mm)
8
13.43 in. (341mm)
27.56in. (700mm)
15.59in. (396mm)
14.5in. (368mm)
Heat Controller VFH InverterFlex® - Outdoor Ductless Mini-Split
FIG. 9 36KBTU/H
39.13 in. (994mm)
36.22 in. (920mm)
FIG. 10 42KBTU/H
42.8 in. (1087mm)
40 in. (1015mm)
31.06 in. (789mm)
15.55 in. (395mm)
16.81 in. (427mm)
24.62 in. (610mm)
3.78 in. (96mm)
3.78 in.
(96mm)
3.0 in.
(76mm)
6.97 in.
(177mm)
14.57 in. (370mm)
9.02 in. (153mm)
Condensate Drainage
• For heat pump models only.
• Condensate and defrosted water created by the
unit operating in heat mode should be routed
and drained away from the unit.
• Parts needed for condensate drainage are not
factory supplied; they are commercially available.
• Fit the rubber washer onto the drain connector, then
!
43.43 in. (1103mm)
17.32 in. (440mm)
15.79 in. (401mm)
24.84 in. (631mm)
Fig. 11
Bottom frame
Drain plug
Drain connector
Hose (5/8” (16mm) I.D.
17.72 in. (450mm)
3.9 in.
(99mm)
3.0 in.
(76mm)
4.76 in.
(121mm)
14.25 in. (362mm)
7.52 in. (191mm)
Drain-water hole
insert the drain connector into the hole on the base
pan of the outdoor unit. Secure into place. (Fig. 11)
• Connect a locally purchased drain hose. Install
hose to the hose barb end of the drain connector.
• Route the hose to drain location away from
the unit.
• Repeat for each hole on the base of the unit, as
needed.
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