Carrier 438MG series User manual

438MG / 40MA / 40MB
Multi-zone
18 to 48
SAFETY CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . . . . . 2
SYSTEM REQUIREMENTS. . . . . . . . . . . . . . . . . . . . . . . . . 2
MODEL NUMBER NOMENCLATURE. . . . . . . . . . . . . . . . 3
SAFETY PRECAUTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
INSTALLATION INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . 6
REFRIGERANT PIPE CONNECTION. . . . . . . . . . . . . . . . . 29
ELECTRICAL WORK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
AIR PURGING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
TEST RUNNING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

2

The first two digits indicate the equipment type.
40 = Indoor unit;
38 = Outdoor uni
Digit 5 indicates the system's type:
C = Cooling only;
Q = Heat pump
Maximum Number of fan coil units connected to the outdoor unit
B = 1:1
Digits 7, 8 indicate the system's capacity in 1000
BTU/Hr
Example: 09 = 9000 BTU/Hr
Digit 9 - Indoor Fan Coil Unit Type
B = High-Wall
C = Cassette
D = Ducted
F = Console
G = Underceiling
H = High Wall Color Variation
- = Outdoor
Digit 12 indicates voltage
1 = 115/l/60
3 = 208-230-1-60Hz
40 MA Q B 09 B -- 3
Digits 10, 11 - blank
Digits 3 and 4 represent the model
Model number Nomenclature

System
Tons System Btuh
1.5 18,000
27,000
36,000
48,000
208/230-1 38MGQC18---3
38MGQD27---3
38MGQF36---3
38MGQF48---3
208/230-12.25
Outdoor Model
Number
Volt- Ph @
60Hz
3208/230-1
208/230-14
Model Numbers
3

4

0.12in(3mm)
5

4.72in(12cm).
7.55ft(2.3metres)
5.91in(15cm)
More than 11.8in(30cm)
More than 11.8in(30cm)
More than 78.7in ( 200cm)
More than 23.6in
(60cm)
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 78.7in(200cm) of clearance and the
connection side (right side) should have more
than 23.6in(60cm) of clearance.
6

User’s
p
Pipe size differs from appliance to appliance.
To meet different pipe size requirem ents, sometimes
the pipe connections need the transfer connector
to install on the outdoor unit .)
(Fasten it on the connective cable between the
indoor units and outdoor unit after installation.)
Except the above parts provided, the other parts needed for the installation must be purchased.
2.6in/65mm )
13lbf.ft/1.8kgf.m, 30.4lbf.ft/4.2kgf.m
39.8lbf.ft/5.5kgf.m , 47.7lbf.ft/6.6kgf.m
0.16in/4mm)
1/4(6.35)
3/8(9.52)
3/8(9.52)
1/2(12.7)
5/8(15.9)
7

This illustration is for illustration purposes only.
.
A minimum pipe run of 9.84ft(3m) is required
to
minimize vibration and excessive noise.
More than 4.7in
(
12cm)
More than 4.7in
(
12cm)
More than 78.7in
(
200cm)
More than 4.7in(
12cm)
More than
4.7in(12cm)
More than
4.7in(12cm)
More than
11.8in(
30cm)
More than
23.6in(
60cm)
More than 5.9in(15cm)
More than 23.6in
(
60cm)
3.9in(10cm)
More than
8

If the wall is made of brick, concrete
or a similar material , drill five or eight
5mm diameterholes in the wall.Insert
clip anchor for the appropriate mounting
screws.
units. See Fig.5 for example.
in(mm)
in(mm)
32.9x11(835x280)
39x12.4(990x315)
46.7x13.5(1186x343)
5.5(140)
10.2(260)
10.8(275)
4.3(110)
5.3(135)
10.8(275)
1.8/45
7.1/180 4.3/110
1.4/36.5
1.8/45
11/280
29.5/750
1.8/45 1.8/45
1.4/36.5
11/280
4.3/110
5.5/140
32.9/835
12.4/315
1.8/45
0.85/21.5
1.8/45
13.5/343
9

the
2.6in/65mm
0.2-0.28in(5-7mm)
When connecting the extension drain hose,
insulate the connecting part of the extension
drain hose with a shield pipe, do not let
the drain hose slack.
Fix the end of the connective pipe. (Refer
to the Tightening Connection in the
REFRIGERANT PIPING CONNECTION).
Because the condensed water from the rear of the
indoor unit is gathered in a ponding box and is
piped out of room. Do not put anything else in
the box.
Do not allow the piping to extend from
the back of the indoor unit.
Be careful not to let the drain hose slack.
Heat both of the insulated auxiliary pipes.
Be sure that the drain hose is located at
the lowest side of the bundle. Locating
at the upper side can cause the drain
pan to overflow inside the unit.
Never cross or twist the power
wire with any other wiring.
Run the drain hose sloped downward to
evenly drain the condensed water.
2.6in/65mm
10

Get it out after the piping is complete.
from side to side, up and down to ensure
if it is fastened securely.
Max. height difference between indoor units
98.4ft(30m) 147.6ft(45m) 196.8ft(60m) 246.1ft(75m)
65.6ft(20m) 82ft(25m) 98.4ft(30m) 98.4ft(30m)
32.8ft(10m) 32.8ft(10m) 32.8ft(10m) 32.8ft(10m)
49.2ft(15m) 49.2ft(15m) 49.2ft(15m) 49.2ft(15m)
32.8ft(10m) 32.8ft(10m) 32.8ft(10m) 32.8ft(10m)
11

flow.
noticeable
Where piping between the indoor and outdoor units
is possible within the allowable limit.(Refer to the
installation manual of the outdoor unit.)
3.28ft/1m
3.28ft/1m
1X
1X 2X 1X+1X
1 2 3 4
56
1Remotecontroller
2Batteries
3
4
5
Installation and owner'smanual
6
Anti-shock rubber(on somemodels)
Drainplug(onlyheat pumpmodels)(withthe outdoorunit)
Seal ring(onlyheat pumpmodels)(withthe outdoorunit)
12

Decoration panel dimensions
/
20.59in/523 22.44in/570 25.47in/647
21.45in/545
22.44in/570
25.47in/647
in/
13

or less.If the spacing between the ceiling and
the unit is over 20 mm/0.79in , attach sealing
material in the part or recover the ceiling.
Establish a ceiling opening needed for
After creating an opening in the ceiling, it may be
necessary to reinforce the ceiling beams to keep
the
the weight of the unit. Adjust the clearance from the
For installations other than the standard
The center
attached screws as shown in the figure below.
14

Install the drain piping as shown in the figure below and
take measures against condensation. Improperly
Check if the unit is leveled at all four corners with
a water level or a water-filled vinyl tube as shown
in the figure below.
15

Keep in mind that if water collects in the
drain pipe, the pipe may become blocked.
The incline of the drain hose should be
75
mm/2.95in or less so that the drain socket
does not have to withstand additional force.
pipes as shown in the figure below. Select
When the electric wiring work is finished, check
the drainage flow during the COOL operation.
0~2.95in
0~75
21in/530
29.5in/750
8.7in/220
Unit: in/mm
Unit: in/mm
Unit: in/mm
16

are properly seated in the groove of the panel.
supplied screws as shown in the figure below.
17

Ducted type
Move the unit in install the original state.
Make sure to install the electric insulation according to the relevant electric
standard in case the unit is installed on metal part of building.
Please keep away from the following places, or amalfunction may occur.
(if unavoidable, please consult a professional):
A. Near mineral oil like the oil for cutting machines.
B. Near an abundance of salty air. (near the coast)
C. Near caustic gases such as sulfuric gas. (Near a hotspring.)
D. In a factory where the voltage fluctuates greatly.
E. In a car or in a cabin.
F. In aS kitchen or a place full of oil steam.
G. Near a strong electromagnetic wave.
H. Near combustible gas or materials.
I . Near a evaporating acid or alkaline gas.
The ceiling is horizontal and it can handle the weight of the indoor unit.
The air inlet and outlet are not impeded and is not affected by outdoor air too much.
a
19.7in
/500mm /100mm
3.9in
/1000mm
39.4in
/250mm
9.8in
/200mm
7.9in
/500mm
19.7in
/3m
9.8ft
18

The treatment to the ceiling varies for each construction; please consult professionals for details.
Reinforce the area that is cut off and consolidate the roof beam.
Perform the connection of piping and wiring inside the ceiling.
Install the hanging bolt in the following different situations:
Install the hanging hook with an expansible
Install with an insertion or embedding screw.
U-shaped slot of the installation area.
the level degree of the unit with a gradienter.
0.4/10
0.4/10
19

Unit: in/mm
20