![background image](http://html.mh-extra.com/html/carrier/aquazone-50rlp/aquazone-50rlp_installation-instructions-manual_2563416005.webp)
5
Pump 1
Pump 2
Cool Stages 1
Cool Stages 2
Heat Stages 1
Heat Stages 2
Transformer 1
Transformer 2
Transformer 3
Processor
Input/Output 1
Input/Output 2
Low Voltage
Zone Thermostat
Control Relays
HOA
INPUT
TYPE
UCS-421
MODE
FLT SEQ
MODE
FLT SEQ
A
B
C
D
MA
V
CH
H3
H4
H5
A
B
C
D
24V
POWER
COMMON
SIGNAL
INPUT
CHAIN
OUTPUT
INPUT
TYPE
UCS-421
MODE
FLT SEQ
MODE
FLT SEQ
A
B
C
D
MA
V
CH
H3
H4
H5
A
B
C
D
24V
POWER
COMMON
SIGNAL
INPUT
CHAIN
OUTPUT
INPUT
TYPE
UCS-421
MODE
FLT SEQ
MODE
FLT SEQ
A
B
C
D
MA
V
CH
H3
H4
H5
A
B
C
D
24V
POWER
COMMON
SIGNAL
INPUT
CHAIN
OUTPUT
INPUT
TYPE
UCS-421
MODE
FLT SEQ
MODE
FLT SEQ
A
B
C
D
MA
V
CH
H3
H4
H5
A
B
C
D
24V
POWER
COMMON
SIGNAL
INPUT
CHAIN
OUTPUT
POWER SWITCH
CONVENIENCE
OUTLET
CONDUIT
PANDUCT®
WIRING DUCT
Fig. 4 — Aquazone™ System Control Panel