119
3. Auto Mode Selection
SW5(dip 5)
a.
Auto mode off
off
b.
Auto mode on
on
Note : Factory preset : SW5 = off ~ auto mode off
4. Stage Differential Temperature
Differential temperature is the temperature difference between turning on or off 1 compressor to another
compressor in thermostat cycle.
The stage differential temperature can be selected from the range shown below :
Dip switch 3
Dip switch 4
a. Default
off
off
b. 0.5
°
C
on
off
c. 1.0
°
C
off
on
d. 1.5
°
C
on
on
note that 1.5
°
C only valid for 2 and 3 compressors model. For 4 compressors model, maximum allowed is
1.0
°
C.
The default differential temperature is base on number of compressor model, the setting is as below :
Model
Diff. Temperature
1 compressor
Not applicable
2 compressor
1.5
°
C
3 compressor
1.0
°
C
4 compressors
0.5
°
C
5. Hot Keep Option
Dip switch 6
a. Fan off
off
b. Fan on
on
6. Operating Modes
The system has 4 operating modes to select with respect to each model selection:
Model
Auto
Cool
Heat
Fan
SQCn
-
X
-
X
SQHnh
-
X
X
X
(Dip switch 5 = off)
SQHnh
X
X
X
X
(Dip switch 5 = on)
Where
x denotes modes available
n = number of compressor(s)
h = number of heater(s)
7. Last Memory Functions
The power up settings for either with or without the last memory backup is based on the JH1 setting.
JH1 Setting
a. Last memory backup
JH1 Plugged
b. Without last memory backup
JH1 Removed
Summary of Contents for M4MC075D
Page 71: ...70 Blower Performance Curves BLOWER PERFORMANCE CURVE MDB 075D...
Page 72: ...71 BLOWER PERFORMANCE CURVE MDB 100D...
Page 73: ...72 BLOWER PERFORMANCE CURVE MDB 125D...
Page 74: ...73 BLOWER PERFORMANCE CURVE MDB 150D...
Page 75: ...74 BLOWER PERFORMANCE CURVE MDB 200D...
Page 76: ...75 BLOWER PERFORMANCE CURVE MDB 250D L s 70 65 60...
Page 77: ...76 BLOWER PERFORMANCE CURVE MDB 300D...
Page 78: ...77 BLOWER PERFORMANCE CURVE MDB 400D...
Page 79: ...78 BLOWER PERFORMANCE CURVE MDB 500D...
Page 80: ...79 BLOWER PERFORMANCE CURVE MDB 075D DR VERY HIGH STATIC...
Page 81: ...80 BLOWER PERFORMANCE CURVE MDB 100D DR VERY HIGH STATIC...
Page 82: ...81 BLOWER PERFORMANCE CURVE MDB 125D DR VERY HIGH STATIC...
Page 83: ...82 BLOWER PERFORMANCE CURVE MDB 150D DR VERY HIGH STATIC...
Page 89: ...88 MODEL MDB 500D4 DR4 NOTE 1 WITH SEQUENTIAL CONTROLLER 2 VERTICAL AIR DISCHARGE...
Page 90: ...89 Outlines And Dimensions Outdoor MODEL MMC 075 100D DR MODEL MDB 125D DR...
Page 91: ...90 MODEL MMC 150D DR OUTDOOR UNIT WITH BALL VALVE MODEL MMC 075D...
Page 92: ...91 MODEL MMC 100D MODEL MMC 125D...
Page 93: ...92 MODEL MMC 150D...
Page 97: ...96 MODEL MDB 400D4 vs MMC 100D x 4 MDB 500D4 vs MMC 125D x 4 WITH SEQUENTIAL CONTROLLER...
Page 101: ...100 MODEL MDB 400DR4 vs MMC 100DR x 4 MDB 500DR4 vs MMC 125DR x 4 WITH SEQUENTIAL CONTROLLER...
Page 102: ...101 Refrigerant Circuit Diagram MODEL MMC 075D 100D 125D 150D...
Page 103: ...102 MODEL MLC 061C...
Page 104: ...103 MODEL MMC 075DR 100DR 125DR 150DR R22 M4MC 75DR 100DR 125DR 150DR R407C...
Page 177: ...2004 McQuay International 1 800 432 1342 www mcquay com ISO 9002 REGISTERED...