Heat Controller A-VFH24TA-1 Gebrauchsanweisung

Heat Controller • 1900 Wellworth Ave. • Jackson, MI 49203 • (517)787-2100 • www.heatcontroller.com

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

VFH InverterFlex® - Outdoor Ductless Mini-Split Heat Controller

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

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

Heat Controller VFH InverterFlex® - Outdoor Ductless Mini-Split

WARNING!

CAUTION!

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.

The items to be followed are classied by the symbols:

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 specied 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 bafe. 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 specied 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 specied 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.

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.

WARNING!

CAUTION!

• 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 classied by the following indications.

VFH InverterFlex® - Outdoor Ductless Mini-Split Heat Controller

Outdoor Unit

Duct Type Indoor

Unit (Rectangular

air outlet)

Wall Mounted

Indoor Unit

Cassette Type

Indoor Unit

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 denes 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

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

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

Indoor Nomenclature B-VFH09MA-1

Outdoor Nomenclature A-VFH18DA-1

EXAMPLE OF TRI-ZONE SYSTEM

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 conict.

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 dehumidication mode.

However all other modes must match among the

indoor units.

Heat Exchanger

Liquid Receiver

Four Way Valve

Oil Separator

Gas/Liquid Separator

Indoor Unit

Outdoor Unit

Electronic

Expansion Valve

Stop

Valve

Capillary

Compressor

Heat Exchanger

Heat Exchanger Heat Exchanger

Heat Exchanger

Heating

Cooling

System Schematic

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.

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 airow 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

fan operation. (Fig. 2 and Fig. 3)

Fig. 1

Min. 1.5ft.

(500mm)

(Air inlet side)

Min. 1.5ft. (500mm)

Space to the wall

Min. 3.5ft.

(1000mm)

Min. 1.5ft.

(500mm)

Min. 6.5ft. (2000mm)

(Air outlet side)

Fig. 2 Fig. 3

Correct

Incorrect

CorrectIncorrect

Heat Controller VFH InverterFlex® - Outdoor Ductless Mini-Split

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)

• 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.

Fig. 6

Fig. 4 Fig. 5

Min. 1.5ft (500mm)

Min. 6.5ft (2000mm)

Min. 3.5ft (1000mm)

(Service space)

Fence or

Obstacles

• If the outdoor unit is installed on roof structures

or external walls, excessive noise and vibration

may result, and may also be considered a non-

serviceable installation.

• Oil traps must be made in the refrigerant line set

(every 10 ft.) when the outdoor unit is located above

the indoor unit.

VFH InverterFlex® - Outdoor Ductless Mini-Split Heat Controller

Outdoor Unit Installation

• 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.

• In a snowy area, slab should be higher than drifting

snow.

• See outdoor installation location information

on pages 6 and 7 for more details and required

clearances.

FIG. 7 18KBTU/H

32.09 in. (815mm)

35.39 in. (899mm)

12.44 in. (316mm)

14.88in. (378mm)

23.46 in. (596mm)

21.65 in. (550mm)

15.5in. (343mm)

FIG. 8 24KBTU/H, 30KBTU/H

35.12 in. (892mm)

37.24 in. (946mm)

13.43 in. (341mm)

15.59in. (396mm)

27.56in. (700mm)

22.05 in. (560mm)

14.5in. (368mm)

Anchoring outdoor unit

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)

Heat Controller VFH InverterFlex® - Outdoor Ductless Mini-Split

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

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.

Fig. 11

Drain-water hole

Bottom frame

Drain plug

Drain connector

Hose (5/8” (16mm) I.D.

FIG. 10 42KBTU/H

42.8 in. (1087mm)

40 in. (1015mm)

24.84 in. (631mm) 7.52 in. (191mm)

43.43 in. (1103mm)

17.32 in. (440mm)

15.79 in. (401mm)

3.9 in.

(99mm)17.72 in. (450mm)

14.25 in. (362mm)

3.0 in.

(76mm)

4.76 in.

(121mm)

39.13 in. (994mm)

FIG. 9 36KBTU/H

36.22 in. (920mm)

24.62 in. (610mm)

31.06 in. (789mm)

16.81 in. (427mm)

15.55 in. (395mm)

14.57 in. (370mm)

9.02 in. (153mm)

3.78 in. (96mm)

3.0 in.

(76mm)

6.97 in.

(177mm)

3.78 in.

(96mm)

VFH InverterFlex® - Outdoor Ductless Mini-Split Heat Controller

Refrigerant Line Set Installation

1. Purchase line sets through a Heat Controller

distributor with consideration of the minimum

and maximum line lengths. (Page 11)

2. Both liquid and suction lines to be insulated.

3. Connections are made via are nuts.

4. The number of bends and length of refrigerant

lines determine the pressure drop which affects

capacity and efciency of the system, as well

as oil return. Minimize the length and number of

bends when possible during installation.

5. Minimum line set length must be maintained,

even if the installation does not require it. Extra

length that is unnecessary can be coiled up

near the outdoor unit (Do not to block air inlets/

outlets).

6. Choose a location that places the outdoor

unit as close to the indoor unit as possible to

minimize line set lengths.

7. Use only clean, refrigerant grade tubing suitable

for R-410A.

8. Avoid installing refrigerant lines on wet/rainy

days.

9. Always keep tube ends sealed until the nal

connections are to be made.

10. If line sets are being made at the time of

installation, rather than being purchased, be sure

to:

• Remove burrs from cut ends of the tubing

• Use tube benders to prevent kinking.

• Ensure tube cuts are square in relation to the

end of the tube.

• Use the proper diameter tube and are nut

sizes recommended by the manufacturer.

• Insulate both lines with Amraex or equivalent

with a wall thickness of at least 3/8".

• Use copper tubing suitable to withstand

pressures for R-410A refrigerant. We

recommend a minimum wall thickness of

0.027 in. (0.7mm).

11. The tube size should always be the same

diameter as the connections provided at the of

the indoor unit.

Note: On some models, a reducer or an

expander may be shipped with the outdoor

unit in order to adapt the line set connection to

the proper size to mate with the indoor unit’s

connection. Be sure to check for these parts,

should you discover that the outdoor units

service valve sizes differ from the indoor unit’s

connections. If this part is shipped with the

outdoor unit, then it is required to be used.

12.Up sizing/downsizing the refrigerant lines/

connections can result in inadequate oil return to

the compressor or excessive refrigerant return

and will void the warranty.

13.Do not over torque the connections, excessive

force can break the are nut.

14. When routing the line set between the outdoor

and indoor units:

A. Support the tubing adequately to avoid sags

that can trap the oil.

B. Isolate the tubing so it does not transmit

noise from vibration into the structure of the

building.

C. Avoid sharp edges that could cut the tubes.

D. Trap rises every 10 ft. (5-7m) with a ‘p’

trap, when outdoor unit mounted above the

indoor unit.

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