ECR International 18k, 27k, 36k, 45k Installation, Operation & Maintenance Manual

Presents

MULTI-ZONE

Ductless Split System Heat Pumps

Installation, Operation & Maintenance Manual

18k

27k, 36k, 45k

ECR International, Inc.

2201 Dwyer Avenue,

Utica NY 13501

Phone: [phone]

Web: enviromaster.com

PN 615000159 REV B, 01/01/2017

2

CONTENTS

SAFETY PRECAUTIONS

Warning ....................................................................................................................................................3

Caution .....................................................................................................................................................3

INSTALLATION INSTRUCTIONS

Selecting installation place.......................................................................................................................4

Accessories .........................................................................................................5

REFRIGERANT PIPE CONNECTION

Refrigerant pipe connection .....................................................................................................................8

ELECTRICAL WORK

Electrical work .................. .......................................................................................................................9

TESTING

Testing .....................................................................................................................................................17

AIR PURGING

Air purging with vacuumpump ................................................................................................................15

Safety and leakage check ......................................................................................................................16

R

ead This Manual

Inside you will find many helpful hints on how to install and test the air conditioner properly.
All the illustrations and specifications in the manual are subject to change without prior notice for product
improvement. The actual shape should prevail.

Contact an authorized service technician for repair or maintenance of this unit.
The appliance shall be installed in accordance with national wiring regulations.
Children should be supervised to ensure they do not play with the air conditioner.

Do not operate your air conditioner in a wet room such as a bathroom or laundry room.

Installation work shall be performed in accordance with the national wiring standards by
authorized personnel only.

CAUTION

Outdoor Unit installation...............................................................................................................................7

Multi-Zone Wireless Remote Controller Programming Instructions

Instructions ...............................................................................................................................................18

SAFETY PRECAUTIONS

WARNING

Read the follow SAFETY PRECAUTIONS carefully before installation.

Electrical work must be installed by a licensed electrician. Be sure to use the correct rating of the

power plug and main circuit for the model to be installed.

Incorrect installation due to ignoring these instructions will cause harm or damage.

The seri ousness is classi fied by the followi ng i ndications.

This symbol indicates the possibility of death or serious injury.

The items to be followed are classified by the symbols:

Symbol with background white denotes item that is PROHIBITED from doing.

CAUTION

This symbol indicates the possibility of injury or damage to property.

WARNING

1) Engage dealer or specialist for installation.

2) Install according to this installation instructions strictly. If installation is defective, it will cause water
leakage, electrical shock or fire.

3) Use the attached accessories parts and specified parts for installation.

4)

Install at a strong and firm location which is able to withstand the unit's weight. If the strength is not enough

or installation is not properly done, the unit will drop and cause injury.

,

5) For electrical work, follow the local and national wiring standard and this installation instructions. An
independent circuit must be used. If electrical circuit capacity is not enough or defective, it will cause
electrical shock or fire.

6) Use the specified cable and connect tightly and clamp the cable so that no external force will be acted on
the terminal. If connection or fixing is not perfect, it will cause heat-up or fire at the connection.

7) Wiring routing must be properly arranged so control board cover is fixed properly. If control board cover
is not fixed perfectly, it will cause heat-up at connection point of terminal, fire or electrical shock.

8) When carrying out piping connection, take care not to let air substances other than the specified
refrigerant go into refrigeration cycle. Otherwise, it will cause lower capacity, abnormal high pressure
in the refrigeration cycle, explosion and injury.

9) Do not share the single service with other electrical appliances. Otherwise, it will cause fire or

CAUTION

1) This equipment must be grounded and installed with ground fault current breaker. It may cause electrical
shock if grounding is not perfect.

2) Do not install the unit where leakage of flammable gas may occur. In case gas leaks and
accumulates at surrounding of the unit, it may cause fire.

3) Carry out drainage piping as mentioned in installation instructions. If drainage is not correct, water

may enter the room and damage the furniture.

5) Do not operate your air conditioner in a wet room such as a bathroom or laundry room.

6) An all-pole disconnection device which has at least 3mm clearances in all poles , and have a

leakage current that may exceed 10mA, the residual current device (RCD) having a rated residual
operating current not exceeding 30mA, and disconnection must be incorporated in the fixed wiring
in accordance with local and national codes.

3

4) The appliance shall be installed in accordance with local and national wiring codes.

electrical shock.

4

Outd oo r unit

If the o ut door unit is instal led on a roof structu re, be sure to level th e unit.
Ensu re the roof structure a nd anchoring meth od are adequate for t he unit location.
Cons u

lt loc al codes regardin g ro oftop mounting.
If the outdoor unit is installed on roof structures or external walls, this may result in excessive
noise and vibration, and may also be classed as a non serviceable installation.

Rooftop installation:

INSTALLATION INSTRUCTIONS

More than 11.8 in [30cm]

If an awning is built over the outdoor unit to
prevent direct sunlight or rain exposure,

More than

11.8 in [

30cm

]

make sure that heat radiation from the
condenser is not restricted.
Ensure that the clearance around the back
of the unit is more than 11.8in. [30cm] and left side is
more than 11.8in. [30cm.] The front of the unit should
have more than 6ft. 6in. [200cm] of clearance and the
connection side (right side) should have more

More than

6ft. 6in.

[

200cm

]

than 23.6 in. [60cm] of clearance.

Fig.1

Take the air conditioner weight into account and select a place where noise and vibration will not be
an issue.
Select a place so that warm air and noise from the air conditioner will not disturb neighbors.

1. Selecting installation place

More than

23.6 in.[60cm]

5

Note: Except the above parts provided, the other parts needed during installation you must purchase.

INSTALLATION INSTRUCTIONS

Tools needed for installation:

Level gauge

Screwdriver
Electric drill,Hole core drill (

φ 2.5in. [65mm]

)

Flaring tool set
Specified torque wrenches:

13

lbft. [18kg·fm], 30 lb·ft. [4.2kgf·m],

40 lb·ft. [5.5kgf·m], 48lb·ft. [6.6kgf·m] (different depending on

model No.) Spanner (half union)
Hexagonal wrench (4mm)
Gas-leak detector

Accessories

Vacuum pump
Gaug e manifold
User s manual
Ther mometer
Mult imeter
Pipe c utter
Meas uring tape

Part s yo u must purchase
Cons ult the technician
for th e pr oper size.

[6.35]
[9.52]
[9.52]
[12.7]
[15.9]

6

2

Self-tapping Screw B ST2.9X10

Remote controller

Installation Plate

Name of Acce ssories

Self-tapping Screw A ST3.9X25

Seal (for cooling& heating mode ls only)

Drain Joint

Magnetic ring
(Hitch it on the connective cable between in door
unit and outdoor unit after installation .)

Cord protection rubber ring
()If the cord clamp can not fasten the cord for the small size

of the cord, please use the cord protection rubber ring
(supplied with accessories) to wrap on the cord, then fix it
with the cord clamp.

Transfer c onnector(

outd oor unit, dependi ng on models )
(NOT E: Pipe size differ from ap pliance to applia nce.

To meet di ffer ent pipe size requi rement, sometim es
the pi pe connections ne ed the transfer con nector
to ins tall on the outdoor u nit .)

Pack ed with the indoor un it or

Connecting

pipe

Assembly

Liquid side

Plastic Expansion Sheath

Number

Qty/one unit

Gas side

7

Remote controller holder

1

(for cooling& heating models o nly)

1

5-8

(depending on models)

5-8

(depending on models)

1

1

Optional part

(one p iece/one cable)

Optional part
(one piece/one indo or u ni t)

Optional part
(1-5 pieces for outdoor
unit, depending on
models)

1
(on some models)

1

5

4

9

11

12

10

8

3

2

1

Opti onal
part s

1/4"
3/8"
3/8"
1/2"

5/8"

·

In [mm]

This illustr ation is for explan ation purposes on ly.
The actual sha pe of your air condti oner may be
slig htly different.
Copp er lines must be insu la ted independent ly

CAUTION

Use a stud finder to locate studs t o pr ev en t
unnecessary damage to the wall.
A minimum pipe run of 9.84ft. [3 metres] is
required to minimize vibration & excessive
noise. Two of the A, B and C directions should
be free from obstructions.

INSTALLATION INSTRUCTIONS

6

CAUTIONS

One-Two
One-Th re e
One-Fo ur

More than 4.72 in.[12cm]

Air f ilter

Rem ote
con troll er

Air f ilt

er

Rem ote
con troll er

Rem ote
con troll er

Air f ilter

More than 5.9 in. [15cm]

Air f ilter

Rem ote
con troll er

A

B

C

More than 78.74 in

[200cm]

Air o ut

M

o

r

e t

h

a

n

23.62

inc [6

0

c

m]

More than

11.81in.[30cm]

Loo p a
con necti ve
cab le

1

2

3

4

5

6

Fig.2

More than 4.72 in.[12cm]

More than

4.72 in.[12cm]

More than

4.72 in.[12cm]

More than

3.93 in.[10cm]

More than

23.62in. [60cm]

7

Settlement of outdoor unit

Anch or the outdoor unit wit h
a bolt a nd nut φ10 or φ8 tightly
and ho rizontally on a con cr ete
or rig id mount.

Fig.5

Install the outdoor unit on a rigid base to
prevent increasing noise level and vibration.
Determine the air outlet direction where the
discharged air is not blocked. In the case the
installation is exposed to strong wind such as a
seaside, make sure the is fan operating properly
by putting the unit lengthwise along the wall or
using a dust or shield plates.
Specially in windy area, install the unit to prev­ent the admission of wind. If suspending unit
installation, the installation bracket should

be
according to technique in the installation bracket
diagram.
The installation wall should be solid brick,
concrete or the same intensity construction, or
actions to reinforce, damping supporting should
be taken. The connection between bracket and
wall, bracket and the air conditioner should be
firm, stable and reliable.
Be sure there is no obstacle to block flow.

Strong
wind

Fig.4

Outdoor unit installation

Outdoor installation precaution

INSTALLATION INSTRUCTIONS

530

549

514

540

560

290

325

340

350

335

640

624

405

366

590

673

634

634

333

403

404

404

760

590

285

810

558

310

800 554

333

845

700

340

845

700

320

900 860

315

946

810

420

938

1369

392

950

1333

410

945 810 395

990 965 345

Out doo r un it dime n sio n

mm(L 1 xHx W1)

Left

(mm)

Right

(mm)

Mou nti n g dimen sio n s

L1

L2

W2

W1

H

20.87

20.24

25.20

26.50

21.61

11.42

13.39

15.94

15.87

12.80

23.23

24.96

13.11

15.91

20.05

24.96

21.26

24.57

13.19

15.91

13.78

14.41

29.92 23.23 11.22

31.50 21.81 13.11

37.20 31.89 15.55

37.24 31.89 16.54

31.89 21.97 12.20

33.28 27.56 12.60

37.40 52.48 16.14

33.28 27.56 13.39

38.98 37.99 13.58

35.43 22.05 12.40

36.93 53.90 15.43

Out doo r un it dime n sio n

Inches

(

L

1

x

H

x

W

1

)

Left(in.)

Right(in.)

Mou nti n g dimen sio n s

Measurement = mm

Measurement = Inches

Seal

Drain joint

Base pan hole of
outdoor unit

Seal

Drain pipe

Oblique

。

90

Roughness

Burr

1. Use the piping kit accessory or pipes
purchased locally.

2. Measure the distance between the indoor

and the outdoor unit.

3. Cut the pipes a little longer than the

measured distance.

4. Cut the cable 4.9ft [1.5m] longer than the pipe
length.

Fig.6

B: Burr removal

1. Com pletely remove al l bu rrs from the cut

cros s se ction of pipe/tub e.

2. Put t he e nd of the copper tube /pipe in a
down wa rd direction as you r emove burrs in
orde r to a void dropping bur rs into the tubing.

Pipe

Reamer

Point down

Fig.7

Fig.8

C: Putting nut on

Remo ve f lare nuts attache d to indoor and
outd oo r unit, then put them o n pipe/tube
havi ng c ompleted burr rem oval.(not possi ble
to put the m on after flaring wo rk)

Flare nut

Copper tube

Fig.9

8

REFRIGERANT PIPE CONNECTION

(1)

(2)

Drain joint installation

NOTE: The drain joint may differ from appliance
to app l

ianc e.

Fit the seal into the drain joint, then insert the
drain joint into the base pan hole of outdoor unit,

rotate 90°to secure assembly . Connecting the
drain joint with an extension drain hose (Locally
purchased), in case water drains off the outdoor
unit during the heating mode.

Refrigerant pipe connection

1. Flaring work

Main cause for refrigerant leakage
is due to defect in the flaring work.
Carry out correct flaring work
using the following procedure:

A: Cut the pipes and the cable.

Bar

Copper pipe

Clamp handle

Cone

Yoke

Handle

Bar

"A"

Red arrow mark

Fig.10

D: Flaring work

Firm ly h old copper pipe in a di e in the
dime ns ion shown in the tabl e below.

Outer diam.

in [mm]

A in [mm]

Max.

Min.

[6.35]

[1.3]

[0.7]

[9.52]

[1.6]

[1.0]

[12.7]

[1.8]

[1.01.0]

1/4"
3/8"
1/2"

.05

.06
.07

.03

.04
.04

9

ELECTRICAL WORK

Caution

Align the center of the pipes.
Sufficiently tighten the flare
nut with fingers, and then tighten
it with a spanner and torque wrench
as shown in Fig.11 & 12

Tightening Connection

Excessive torque can break nut
depending on installation conditions.

The 24k indoor unit can only be connected with
A system, if there are two 24k indoor units,
they can be connected with A and B system.
(Fig.13)

Fig.12

Indoor unit tubing Flare nut Pipings

Fig.11

1. If there is serious safety problem about the power supply, the technicians should refuse
to install the air conditioner and explain to the client until the problem is solved.

2. Power voltage should be in the range of 90%~110%of rated voltage.

3. A separate over current protection device and disconnect switch should be used for each unit.

4. Ensure the air conditioner is grounded well.

5.

Refer to the attached Electrical Connection Diagram located on panel of outdoor

unit to connect the wire.

6.

All wiring must comply with local and national electrical codes and be installed

by qualified and skilled electricians.

7. An individual branch circuit and single receptacle used only for this air conditioner must be
available.

Electrical work

Electric safety regulations for initial Installation

Outer

diam.

Indoor unit capacity

Tightening

torque(N·cm)

Liquid

Additional tightening

torque(N·cm)

Gas

[6.35]

9k/12k

[12.7]

24k

[9.52]

18k

1500

(11.1 lbf·ft.)

1 / 4

1600

(11.8 lbf·ft.)

3 / 8

3500

(25.8 lbf·ft.)

1 / 4

3600

(26.6 lbf· ft.)

5 / 8

2500

(18.4 lbf·ft.)

1 / 4

2600

(19.2 lbf·ft.)

1 / 2

When select a 24k indoor unit

Fig.13

Unit:in

Conn ective pipe size of A and B s ys tem:

A(1/2in )

A(1/4in )

B(3/8in )

B(1/4in )

C(3/8in )

C(1/4in )

1/4"

3/8"

1/2"

10

ELECTRICAL WORK

Fig.14

Connect the cable to the outdoor unit

1. Remove the electrical control board cover
from the outdoor unit by loosening the screw
as shown in Fig.14

2. Connect the connective cables to the
terminals as identified with their respective
matched numbers on the terminal block of
indoor and outdoor units.

3. Secure the cable onto the control board with
the cord clamp.

4. To prevent the ingress of water, from a loop
of the connective cable as illustrated in the
installation diagram of indoor and outdoor
units.

5. Insulate any unused conductors with PVC-
tape. Process them so they do not touch any
electrical or metal parts.

Wiring connection

NOTE: Before performing any e le ct ri cal
work, turn off the main power t o th e sy st em .

Connection Cable

10mm

40mm

CAUTIONS

Do not t ou ch the capacitor ev en if you
have d isconnected the p ow er for there is
stil l high voltage powe r on i t, or electric
shoc k hazard may occur. For yo ur safety,
you sh ould start repairin g at least 5 minutes
late r after the power is disc onnected.

The po wer is supplied fro m th e Outdoor
Unit . The Indo or Units are connec ted
with s ignal wires or powe r co rds are
conn ected reliably an d co rrectly, or the
air co nditioner could n ot r un normally.

Fig.15

CAUTIONS

Make s ure to connect the indo or unit (A,B, C, D,
E) to th e Hi a nd Lo valve and termi nals of signal
wire s(A, B, C, D, E) of outdoor u nit as identified
with t heir respective mat ched connection .
Wrong wiring c onnections may ca use some
elec trical parts to malfu nction.

Mini mu m norminal cross- sectional area
of con du ctors:

Rated cur rent of app liance
(A)

Nominal cross-sectional
area in2 (mm2)

>3 and <6

>6 and <10

>10 and <16

>16 and <25

[2.5]

[2.5]

[2.5]

[2.5]

Screw

Cover

Con necti ve cabl e
of in door un it and
out door un it

Con necti ve cabl e
of in door un it and
out door un it

Con necti ve cabl e
of in door un it and
out door un it

Con necti ve cabl e
of in door un it and
out door un it

Con necti ve cabl e
of in door un it and
out door un it

One-t wo One-t hree One-f our

One-f ive

POWER

E

E

Suggest M inimum Wi re Size
(AWG:Ame rican Wir e Gage):

App lia nce Amps

AWG Wi re S ize

10

13

18

25

14

14

14

12

30

10

The cable size and the current of thefuse or
switch are determined by the maximum current
indicated on the nameplate which located on the
side panel of the unit. Please refer to the
nameplate before selecting the cable, fuse and
switch. Please refering to the above tables and
choosing the proper wire size under the local
electrical requirements.

NOTE:

.098

.098

.098

.098

ELECTRICAL WORK

11

One- tw o models:

NOTE:please refer to the foll ow in g fi gures,if the client want wire b y th em se lves.
please run the main power cor d th ro ug h the lower line-outlet of the co rd c la mp .

POWER

L

N

L(A)

L(B)

N(A)

N(B)

S(A)

S(B)

L1(A)

L1(A)

1(A)

1(A)

L1(A)

L1(A)

L1(B)

L1(B)

1(B)

1(B)

L1(B)

L1(B)

L2(A)

L2(A)

2(A)

2(A)

L2(A)

L2(A)

L2(B)

L2(B)

2(B)

2(B)

L2(B)

L2(B)

S(A)

S(A)

3(A)

3(A)

S(A)

S(A)

S(B)

S(B)

3(B)

3(B)

S(B)

S(B)

Model A

Model B

Model F Model G

Model E

TO A TO B

TO A

TO A TO A

TO A

TO A

TO A

TO B

TO B TO B

TO B

TO B

TO B

POWER

L

N

L(A)

L(B)

N(A)

N(B)

S(A)

S(B)

Model C

TO A

POWER

POWER POWER

POWER

POWER

POWER

TO B

L N S

L1 L2 S

1 2 3 L1 L2 S

1 2 3

L1 L2 S

L1 L2 S

L1 L2 S

1 2 3 L1 L2 S

1 2 3

L1 L2 S

L1 L2 S

L(1) 1 2 (N) S

L(1) 1 2 (N) S

L N S

L1

L1 L1

L1

L1

L1

L2

L2 L2

L2

L2

L2

POWER

L

N

L(A)

L(B)

N(A)

N(B)

S(A)

S(B)

Model D

TO A TO B

W 1(L) 2(N ) S W 1(L) 2(N ) S

IMPORTANT: Connect the connective cables to the terminals as identified with their respective

matched numbers on the terminal block of indoor and outdoor units. For example, see
the following US models: Terminal L1(A) of outdoor must connect with terminal L1 on the
indoor unit.

Magne ti c ring( not sup pl ied,o ption al p art)

(Used t o hit ch to the c onn ectiv e cab le of ind oor
and out doo r units a fte r insta lla tion. )

NOTE:please r efer to the f ollowin g figures ,if the cli ent want wi re by thems elves.

ELECTRICAL WORK

12

L

N

L(A)

N(A)

S(A)

POWER

L(B)

N(B)

S(B)

L(C)

N(C)

S(C)

L(D)

N(D)

S(D)

Model C

Model D

TO B

L(1) 1 2 (N) S

TO C

L(1) 1 2 (N) S

TO A

L(1) 1 2 (N) S

TO D

L(1) 1 2 (N) S

L

N

L(A)

N(A)

S(A)

POWER

L(B)

N(B)

S(B)

L(C)

N(C)

S(C)

L(D)

N(D)

S(D)

TO B

TO C

TO A

TO D

W 1(L) 2(N ) S

W 1(L) 2(N ) S

W 1(L) 2(N ) S

W 1(L) 2(N ) S

One-thr ee models :

L

N

L(A)

N(A)

S(A)

POWER

TO A

L N S

Model A

L(C)

N(C)

S(C)

TO C

L N S

POWER

POWER

POWER

TO A

TO A

TO A

L(B)

N(B)

S(B)

TO B

L N S

TO C

TO C

TO C

TO B

TO B

TO B

Model B

Model F

Model E

L1(A)

L1(A)

1(A)

L2(A)

L2(A)

2(A)

S(A)

S(A)

3(A)

L1

L1

L1

L2

L2

L2

L1 L2 S

1 2 3

1 2 3

L1(C)

L1(C)

1(C)

L2(C)

L2(C)

2(C)

S(C)

S(C)

3(C)

L1(B)

L1(B)

1(B)

L2(B)

L2(B)

2(B)

S(B)

S(B)

3(B)

L1 L2 S

1 2 3

1 2 3

L1 L2 S

1 2 3

1 2 3

L

N

L(A)

N(A)

S(A)

POWER

TO A

Model C

L(C)

N(C)

S(C)

POWER

L(B)

N(B)

S(B)

Model D

W 1(L) 2(N ) S

TO B TO C

TO A

L(1) 1 2 (N) S

TO B

L(1) 1 2 (N) S

TO C

L(1) 1 2 (N) S

W 1(L) 2(N ) S W 1(L) 2(N ) S

One-fou r models:

L

N

L(A)

N(A)

S(A)

POWER

TO A

L N S

TO C

L N S

POWER

TO A

TO B

L N S

TO C

TO B

L1(A)

L2(A)

S(A)

L1

L2

L1 L2 S L1 L2 S L1 L2 S

L1(C)

L1(B)

L2(C)

L2(B)

S(C)

S(B)

L(B)

N(B)

S(B)

L(C)

N(C)

S(C)

L(D)

N(D)

S(D)

TO D

L N S

L1(D)

L2(D)

S(D)

TO D

L1 L2 S

Model A

Model B

L

N

L(A)

N(A)

S(A)

L(C)

N(C)

S(C)

L(B)

N(B)

S(B)

POWER

TO A

TO C

TO B

Model G

1(A)

2(A)

3(A)

L1

L2

L1 L2 S

1(C)

2(C)

3(C)

1(B)

2(B)

3(B)

L1 L2 S L1 L 2 S

ELECTRICAL WORK

13

One- five models:

L

N

L(A)

N(A)

S(A)

POWER

TO A

L N S

TO D

L N S

TO C

L N S

L(C)

N(C)

S(C)

L(D)

N(D)

S(D)

TO E

L N S

Model A

Model B

L(B)

N(B)

S(B)

TO B

L N S

L(E)

N(E)

S(E)

L1 L2 S

L2

L1(A)

POWER

TO A

TO D

TO C

TO E

TO B

L2(A)

S(A)

L1(B)

L2(B)

S(B)

L1(C)

L2(C)

S(C)

L1(D)

L2(D)

S(D)

L1(E)

L2(E)

S(E)

L1 L2 S

L1 L2 S

L1 L2 S

L1 L2 S

POWER

L

N

L(A)

N(A)

S(A)

L(B)

N(B)

S(B)

L(C)

N(C)

S(C)

L(D)

N(D)

S(D)

L(E)

N(E)

S(E)

TO A

L(1) 1 2 (N) S

TO C

L(1) 1 2 (N) S

TO D

L(1) 1 2 (N) S

TO B

L(1) 1 2 (N) S

TO E

L(1) 1 2 (N) S

Model C

POWER

L

N

L(A)

N(A)

S(A)

L(B)

N(B)

S(B)

L(C)

N(C)

S(C)

L(D)

N(D)

S(D)

L(E)

N(E)

S(E)

Model D

TO B

TO C

TO A

TO D

W 1(L) 2(N ) S

W 1(L) 2(N ) S

W 1(L) 2(N ) S

W 1(L) 2(N ) S

TO E

W 1(L) 2(N ) S

L1

POWER

TO A

TO C

TO B

1(A)

2(A)

3(A)

L1

L2

1 2 3 1 2 3 1 2 3

1(C)

1(B)

2(C)

2(B)

3(C)

3(B)

1(D)

2(D)

3(D)

TO D

1 2 3

Model E

POWER

TO A

TO C

TO B

L1(A)

L2(A)

S(A)

L1

L2

1 2 3

1 2 3 1 2 3

L1(C)

L1(B)

L2(C)

L2(B)

S(C)

S(B)

L1(D)

L2(D)

S(D)

TO D

1 2 3

Model F

POWER

TO A

TO C

TO B

1(A)

2(A)

3(A)

L1

L2

L1 L2 S L1 L2 S L1 L2 S

1(C)

1(B)

2(C)

2(B)

3(C)

3(B)

1(D)

2(D)

3(D)

TO D

L1 L2 S

Model G

ELECTRICAL WORK

14

After the confirmation of the above conditions, prepare the wiring as follows:

1) Never fail to have an individual power circuit specifically for the air conditioner. As for
wiring, be guided by the circuit diagram posted on the inside of control cover.
The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from
vibrations to which the unit is subjected during the course of transportation. Check them and make
sure that they are all tightly fastened. (If they are loose, it could cause burn-out of the wires.)

the method of

2)

3) Specification of power source.

4) Confirm that electrical capacity is sufficient.

5) See to that the starting voltage is maintained at least 90 percent of the rated
the name plate.

voltage marked on

6) Confirm that the cable thickness is as specified in the power source specification.

7) Always install an ground fault circuit breaker in a wet or dump area.

8) The following would be caused by voltage drop.

Vibration of a magnetic switch, which will damage the contact point, fuse breaking, disturbance of normal
function of the overload.

9)

10)

The means for disconnection from a power supply shall be incorporated in the fixed
an air gap contact separation of at least 3mm in each active(phase) conductors.

wiring and have

Before obtaining access to te rm in al s, all supply circuits must be disc on ne ct ed.

CAUTION

CAUTION

CAUTION

CAUTION

Model E

1 2 3

L2

1(A)

POWER

TO A

TO D

TO C

TO E

TO B

2(A)

3(A)

1(B)

2(B)

3(B)

1(C)

2(C)

3(C)

1(D)

2(D)

3(D)

1(E)

2(E)

3(E)

1 2 3

1 2 3

1 2 3

1 2 3

L1

Model F

Model G

1 2 3

L1 L2 S

L2

L2

L1(A)

1(A)

POWER

POWER

TO A

TO A

TO D

TO D

TO C

TO C

TO E

TO E

TO B

TO B

L2(A)

2(A)

S(A)

3(A)

L1(B)

1(B)

L2(B)

2(B)

S(B)

3(B)

L1(C)

1(C)

L2(C)

2(C)

S(C)

3(C)

L1(D)

1(D)

L2(D)

2(D)

S(D)

3(D)

L1(E)

1(E)

L2(E)

2(E)

S(E)

3(E)

1 2 3

L1 L2 S

1 2 3

L1 L2 S

1 2 3

L1 L2 S

1 2 3

L1 L2 S

L1

L1

Air an d moisture in the refri gerant system hav e undesirable effects a s in dicated below:

● P ressure in the system r ises.

● O perating curren t ri ses.

● C ooling or heating e fficie ncy drops.

● M oisture in the refr ig erant circuit may f reeze and block cap illary tubing.

● Water may lead to c orrosion of parts i n th e refrigeration s ystem.

Ther efore, the indoor uni t and tubing betwee n the indoor and outd oor unit must be leak t ested
and ev acuated to remove any n oncondensable s and moisture from t he system.

Air purging with vacuum pump

●

Prep aration
Chec k that each tube(both l iquid and gas side tu bes) between the in door and outdoor un its
have b een properly conn ec ted and all wiring fo r the test run has been c ompleted. Remov e
the se rv ice valve caps from b oth the gas and the liq uid side on the outdo or unit. Note that bo th
the li quid and the gas side s er vice valves on the ou tdoor unit are kept c losed at this stage .

●

Pipe l ength and refrige ra nt amount:

Connective pipe length

NOTE: N=2(one-twin models), N=3( ), N=4(one-four models), N=5(one-five models).

The Standard pipe length is 7.5m(25ft).

one-three models

Pre-charge pipe length(ft/m)
(Standard pipe lengthxN)

More than (Standard pipe lengthxN)ft/m

Air purging
method

Use vacuum
pump.

Use vacuum
pump.

Additional amount of refrigerant to be charged
(R410A)

AIR PURGING

Air purging

15

Liquid side: 6.35(1/4")
(Total pipe length - standard pipe lengthxN)x15g(0.16oz )/m(ft)
Liquid side: 9.52(3/8 ")
(Total pipe length - standard pipe lengthxN)x30g(0.32oz)/m(ft)

When relocate the unit to another place, perform evacuation using vacuum pump.

Make sure the refrigerant added into the air conditioner is liquid form in any case.

Open the valve stem until it hits against the
stopper. Do not try to open it further.
Securely tighten the valve stem cap with a
spanner or the like.
Valve stem cap tightening torque (See
Tightening torque table in previous page ).

Outdoor
unit

Indoor
unit

Refrigerant

Flare nut

Stopper

Cap

Valve body

Packed valve

Half union

Gas side

Liquid side

A

C

D

B

Valve stem

Fig.16

Fig.17

Ca uti on in h andling th e packed valve

When Using the Vacuum Pump

(For method of using a manifold valve, refer
to its operation manual.)

1. Completely tighten the flare nuts, A, B, C, D,
connect the manifold valve charge hose to a
charge port of the low-pressure valve on the
gas pipe side.

2. Connect the charge hose connection to the
vacuum pump.

3. Fully open the handle Lo of the manifold valve.

16

AIR PURGING

starting evacuation, slightly loose theflare nut
of the Lo valve on the gas pipe side and
check that the air is entering(Operation noise
of the vacuum pump changes and a
compound meter indicates 0 instead of minus)

5. After the evacuation is complete, fully close
the handle Lo of the manifold valve and stop
the operation of the vacuum pump. Make
evacuation for 15 minutes or more and check
that the compound meter indicates

5

-76cmHg (-1x10 Pa).

6. Turn the stem of the packed valve B about

o

45 counterclockwise for 6~7 seconds after
the gas coming out, then tighten the flare nut
again. Make sure the pressure display in the
pressure indicator is a little higher than the
atmosphere pressure.

7. Remove the charge hose from the Low
pressure charge hose.

8. Fully open the packed valve stems B and A.

9. Securely tighten the cap of the packed valve.

10. If the outdoor unit uses all vacuum valves,

and the vacuum position is at the main valve,
the system is not connected with the indoor
unit must be tightened with a screw nut.
Checking the gas leakage before operation
to prevent leakage.

4. Operate the vacuum pump to evacuate. After

Manifold valve

Compound meter

-76cmHg

Handle Lo

Handle Hi

Charge hose

Charge hose

Vacuum pump

Pressure gauge

Low pressure valve

Fig.18

Fig.19

Perform the electric safe check after
completing installation:

1. Insulated resistance

The insulated resistance must be more than 2MΩ.

2. Grounding work
After finishing grounding work, measure the

grounding resistance by visual detection and
grounding resistance tester. Make sure the
grounding resistance is less than 4

Ω.

3. Electrical leakage check (performing during

test running)
During test operation after finishing installation,
the serviceman can use the electroprobe and
multimeter to perform the electrical leakage
check.

Turn off the unit immediately if leakage
happens. Check and find out the solution
ways till the unit operate properly

.

● Ele ct rical safety chec k

Safety and leakage check

C

C

D

D

B

B

A

A

A: Lo packed valve B: Hi packed valve
C and D are ends of indoor unit connection.

CAUTION

● Gas l ea k check

1. Soa p wa ter method:
Appl y a soap water or a liqui d ne utral

dete rg ent on the indoor uni t connection
or out do or unit connectio ns by a soft
brus h to c heck for leakage of t he
conn ec ting points of th pip ing. If bubbles
come o ut , the pipes have leak age.

2.

Leak d etector

Use th e leak detector to chec k for leakage.

Indoor unit
check point

Outdoor unit
check point

17

A, B,C,D ar e points fo r one-fou r type.
A, B,C,D, E are points for one-five type.

Fig.20

NOTE: The illustrati on is for explanation
purpose onl

y. The actual order of A, B, C
D and E on the machine may be slightly
different from the uni t you purchased. The
actual shape shall prevail.

A

E

Test running

Perf orm test operation af ter completing ga s leak check at the fla re nut connection s an d
elec trical safety check .
Chec k th at all tubing and wir ing have been prope rly connected.
Chec k th at the gas and liquid s ide service valve s are fully open.

1. Connect the power, press the ON/OFF button on the remote controller to turn the unit on.

2. Use the MODE button to select COOL, HEAT, AUTO and FAN to check if all the functions works

well.

3. When the ambient temperature is too low(lower than 17°C/63°F the unit cannot be controlled by
the remote controller to run at cooling mode, manual operation can be taken. Manual operation is
used only when the remote controller is disable or maintenance necessary. Hold the panel sides
and lift the panel up to an angle until it remains fixed with a clicking sound.
Press the Manual control button to select the AUTO or COOL, the unit will operate under Forced
AUTO or COOL mode(see User Manual for details).

4. The test operation should last about 30 minutes.

Manual control

Button

Fig.21

Manual contr ol

button

AUTO/COOL

TEST RUNNING

Presents

Iverter Multi-Zone Wireless Remote Controller Programming Instruction

s

Multi-Zone Programming Requirement

Follow the steps below to program EACH Air Handler
Control:

1.

Disconnect Power of outdoor unit and indoor unit.

2.

Wait one (1) minute. Resume power to both indoor
and outdoor units.

3.

Use remote to turn Indoor unit ON. With remote turn
Indoor unit OFF TO STANDBY MODE. Indoor unit
display will be blank.

4.

Remove batteries from Wireless Remote Controller.

5.

Press ON/OFF button and wait until Wireless Remote
Controller screen is blank.

Note

DO NOT POINT

Indoor Unit for steps 6 and 7.

Wireless Remote Controller

at the

Note

8.

9.

10.

11.

12.

POINT REMOTE at INDOOR UNIT for steps 8-12.

Press UP button until Wireless Remote Controller
displays F4.

Press MODE button, Wireless Remote Controller
displays 1.

Press TIMER-ON button, while 1 is still shown on
display. Wireless Remote Controller will show F4,
Indoor Unit will beep once and display 01.

Remove batteries. Push ON/OFF button screen will be
blank.

Install batteries to exit ENGINEERING MODE.
Operate A/C and Heat cycles to test remote.

6.

Install batteries into Wireless Remote Controller.

7.

Immediately press and hold MODE, FAN and TIMER­ON button for 3 seconds until Wireless Remote

Controller enters ENGINEERING MODE.

Iverter Multi-Zone Wireless Remote

Display

Up

Timer On

ECR International, Inc.

18

On/Off

Mode

Fan

2201 Dwyer Avenue • Utica, New York 13501

Phone: [phone] • Web: emiretroaire.com

PN 615000208, Rev A [06/30/2017]

NOTES

CS464-I

16122000001504

20150912

The design and specifications are subject to change without prior notice for product
improvement. Con sult with the sales agency or manufacturer for details.