Way Air Flow System - Mitsubishi Electric MR. SLIM SLZ Series Technical & Service Manual

10

4-WAY AIR FLOW SYSTEM

10-1. 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.
Refrigerant pipe
10-2. FRESH AIR INTAKE AMOUNT & STATIC PRESSURE CHARACTERISTICS
Taking air into the unit
0.3 0.6
0
−30
−60
−90
−120
−150
Air flow : Q [m
NOTE: Fresh air intake amount should be 10% or less of
whole air amount to prevent dew dripping.
10-3. 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
12 V 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 (12 V DC LY-1F)
OCH522
Fresh air intake
Drain pipe
Electrical Box
0.9 1.2 1.5
/min]
3
Multiple remote
controller adapter
PAC-SA88HA-E
CN51
Detail drawing of fresh air intake
140
Burring hole
120°
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
board 1
Connector (5P)
Red
Brown
Indoor unit side
Multiple remote
controller adapter
PAC-SA88HA-E
Indoor controller board
33 33
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 increase
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>
<Pa>
<Pa>
<m 3 /min>
MB