Way Air Flow System - Mitsubishi Electric Mr.SLIM SLZ-KA25VA Technical & Service Manual

8

4-WAY AIR FLOW SYSTEM

8-1. FRESH AIR INTAKE (LOCATION FOR INSTALLATION)
At the time of installation, use the duct holes (cut out) located at the positions shown in following diagram, as and when required.
Fresh air intake
Refrigerant pipe
8-2. FRESH AIR INTAKE AMOUNT & STATIC PRESSURE CHARACTERISTICS
SLZ-KA25VAL .TH
(1)
SLZ-KA35VAL .TH
(1)
SLZ-KA50VAL .TH
(1)
Taking air into the unit
Static pressure : P [Pa]
50
0.5 1.0 1.5 2.0 2.5 3.0 3.5
0
-50
-100
-150
-200
-250
-300
NOTE: Fresh air intake amount should be 20% or less of
whole air amount to prevent dew dripping.
8-3. OPERATION IN CONJUNCTION WITH DUCT FAN (BOOSTER FAN)
Whenever the indoor unit operates, the
duct fan operates.
(1)Connect the optional multiple remote
controller adapter(PAC-SA88HA-E)
to the connector CN51 on the indoor
controller board.
(2)Drive the relay after connecting the
12V DC relay between the Yellow
and Orange connector wires.
Use a relay of 1W or smaller.
MB: Electromagnetic switch power
relay for duct fan.
X: Auxiliary relay (12V DC LY-1F)
Drain pipe
Electrical Box
SLZ-KA25VA .TH
(1)
SLZ-KA35VA .TH
(1)
SLZ-KA50VA .TH
(1)
3
Air flow : Q [m /min]
Multiple remote
controller adapter
PAC-SA88HA-E
CN51
25
Detail drawing of fresh air intake
25
[100
3-[2.8 hole
Burring hole
Ceiling surface
How to read curves
Duct characteristics
Curve in the
at site
1
left graphs
0
Q
2
Q
3
Q
Qa
Green
CN51 5
on
indoor unit
1
board
Connector (5P)
Red
Brown
Indoor unit side
Multiple remote
controller adapter
PAC-SA88HA-E
Indoor controller board
CN51(WHT)
[73.4
Cut out hole
Q ... Designed amount of fresh air intake
A ... Static pressure loss of fresh air
intake duct system with air flow
amount Q
B ... Forced static pressure at air condi-
tioner inlet with air flow amount Q
C ... Static pressure of booster fan with
air flow amount Q
D ... Static
pressure loss
amount of fresh air intake duct sys-
tem for air flow amount Q
E ... Static pressure of indoor unit with air
flow amount Q
Qa ... Estimated amount of fresh air
intake without D
Be sure to secure insulation
material by tape, etc.
Yellow
Orange
Installation at site
Be sure to secure insulation
material by tape, etc.
Distance between indoor
controller board and relay
must be within 10m.
<m /min>
3
<Pa>
<Pa>
<Pa>
increase
<Pa>
<Pa>
<m 3 /min>
~
MB