McQuay LML User Manual

Page 12 of 24 / IM 439
Figure 14. Typical MicroTech unit — single compressor
LEGEND
Component
Wire Connector
Thermistor
Heater Crankcase Heater
Optional Wiring
LP1 Low pressure Switch
HP1 High Pressure Switch
LT1 Low Temperature Switch
RV Reversing Valve Solenoid
M2 Compressor Contactor
M1 Fan Starter
R1 & R2 Relay
V1 Expansion Valve
T1 & T2 Transformer
TB Terminal Block Connection
>>
>>
> >
> >
> >
> >
PB
1
L2L1 L3
T1
Gnd.
Lug
T2 T3
123
1
2
3
7
22
GR/Y
E
Fan
Mtr.
Compr.
Mtr.
1
T1
T2
T3
L1
M
1
M
2
L2
L3
T1
T2
T3
T1
T2
T3
L1
L2
L3
23
24
16
12
13
( Ext. Rng. Only)
17
Heater
18
7
8
12
9
13
BK
BK/RD 460V
OR 230V
RD 208V
BK 575V
VT 400V
YE
BL
52
51
1
J2
2
1
2
3
4
5
6
7
E
L
U
P
C
50
1
69
70
71
72
73
12
J2J1
MicroTech
Controller
68
67
66
65
64
63
62
1234567
111098765432
1
J6
23457891011
J5
J4
Low Temp. SIG
Lo Press SIG
Condensate
Lo Temp. SRC
RV Out
Comp Com
Comp Out
Fan Com
Fan Out
24VAC
24V Gnd
Discharge Air Com
Discharge Air In
Water Out Com
Water Out In
Lo Press SRC
Hi Press SRC
RV Com
Aux Module SEL 2
Aux Module SEL 1
Aux Module DC Com
Remote D1 SRC
Remote D1 SIG
Spare Relay NC
Spare Relay Com
Spare Relay NO
RM Sensor LED
Tenant Override
RM Sensor In
RM Sensor Com
Lon Talk Lon Talk
24VAC Com
Aux Module DC +
Aux Module CLK
Aux Module RCV
Aux Module XMT
1
43
42
41
C2
M1
RV
BR
59
M2
34
32
3
2
LT1
LP1
Condensate
Overflow
C1
C
C
76
40
39
38
BR
HP1
37
36
34
33
32
35
31
30
234567891011121314 6
49
53
54
55
56
48
47
46
45
44
J1
Auxiliary Module
(Optional)
Terminal Board #2
Circuit
Breaker
9190
BK
92
24V
WH
WH
V1
93
T1 (50VA)
Disch.
Air
Water
Out
Terminal Board #1
(optional)

McQuay LML Specifications

General

Brand	McQuay
Model	LML
Category	Heat Pump
Language	English