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MicroTech I
Daikin MicroTech I Operating Manual
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7/
77
Operati
on Manual
D
–
EOMW
C00A
07-
16_0
2
EN
Figure 2
, Ope
ration Commands
4.3
Cont
roll
er De
scri
ption
4.3.1
Hardwar
e Str
ucture
The Mic
roTech con
trol sy
stem
for water c
ooled s
crew c
hillers c
ons
i
s
ts o
f
a mai
n unit controll
er with a num
ber of
exte
nsio
n
I/O modules
attac
hed d
ependi
ng on th
e c
hil
ler si
ze a
nd confi
guration.
Up to two o
pti
onal
BAS
commun
ica
tion mod
ules
may be
inc
luded
on reques
t.
An opti
onal Re
mote
Operator Int
erfac
e pan
el
may be i
ncl
uded, c
onnec
ted with up t
o nine u
n
its.
Unit O
n/Off S
witch
#1 C
o
mp
res
sor On/
Off
S
wit
c
h
#2 Comp
res
s
o
r On/
Off Swit
ch
Unit O
n/Off S
witch
#1 C
o
mp
res
sor On/
Off
S
wit
c
h
Heat
Pump S
w
itch
6
8
Table of Contents
Default Chapter
2
Table of Contents
2
1 Introduction
4
2 Controller Operating Limits
5
3 Controller Features
5
4 General Description
6
Eneral Escription
6
Operation Commands Layout
6
Controller Description
7
Control Network Details
10
5 Sequence of Operation
11
6 Controller Operation
14
Microtech Inputs/Outputs
14
Extension I/O Compressor #1 to #3
14
I/O Exv Circuit #1 to #3
15
Extension I/O Fan Module Circuit #2
16
Extension I/O Fan Module Circuit #3
16
Extension I/O Unit Heat Pump (Old Version)
16
Extension I/O Unit Heat Pump (New Version)
16
Setpoints
16
7 Unit Functions
17
Calculations
17
Unit Model
17
Unit Enable
17
Unit Mode Selection
17
Unit Control States
18
Unit Status
19
Ice Mode Start Delay
19
Evaporator Pump Control
19
Condenser Pump Control
20
Condensation Control
20
Leaving Water Temperature (Lwt) Reset
22
Unit Capacity Control
23
Unit Capacity Overrides
25
Energy Saving Mode
26
Daikin on Site
26
8 Circuit Functions
27
Calculations
27
Circuit Control Logic
28
Circuit Status
29
Compressor Control
29
Pressure Condensation Control
31
Exv Control
32
Liquid Injection
33
9 Software Options
34
Inserting the Password in a Spare Controller
34
10 Alarms and Events
36
Alarm Logging
36
Signaling Alarms
36
Clearing Alarms
36
Unit Rapid Stop Alarms
37
Unit Pumpdown Stop Alarms
41
Unit Events
43
Circuit Alarms
46
Circuit Rapid Stop Alarms
47
Circuit Pumpdown Stop Alarms
57
Circuit Events
60
11 Basic Control System Diagnostic
63
12 Using the Controller
65
Navigating
66
13 Optional Remote User Interface
73
14 Embedded Web Interface
75
15 Controller Maintenance
76
16 ICM and Master/Slave
76
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Daikin MicroTech I Specifications
General
Brand
Daikin
Model
MicroTech I
Category
Controller
Language
English
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