Carrier 19XR - Step 5 - Make Electrical Connections; Connect Control Inputs

41
Step 5 — Make Electrical Connections — Field
wiring must be installed in accordance with job wiring dia-
grams and all applicable electrical codes.
Wiring diagrams in this publication are for reference only
and are not intended for use during actual installation; follow
job specific wiring diagrams.
NOTE: The dry contacts for the inputs should be located as
close to the starter as possible. The wiring should be capable of
preventing electrical noise or induced voltage and should not
be routed with any wires with voltage over 50 v.
CONNECT CONTROL INPUTS — Wiring may be speci-
fied for a spare safety switch, and a remote start/stop contact
can be wired to the starter terminal strip. Additional spare sen-
sors and Carrier Comfort Network
®
modules may be specified
as well. These are wired to the machine control panel as indi-
cated in Fig. 22. The control panel optional wiring and power
panel component layout are shown in Fig. 23-25.
a19-2272
COOLER
CONDENSER
a19-2273
COOLER
CONDENSER
Fig. 21 — Relief Valve Arrangements, 19XR Two-Stage Compressor Frame Size 7
C — WITH ISOLATION VALVE
COOLER HEAT
EXCHANGER
FRAME SIZE
CONDENSER HEAT
EXCHANGER
FRAME SIZE
WITH/WITHOUT DISCHARGE
ISOLATION VALVE
VIEW CODE
COOLER
NO. VALVES
CONDENSER
NO. VALVES
B6/B8 C6/C8
With Optional Isolation Valve C 2 6
Without Optional Isolation Valve D 4 6
C6
C6
With Optional Isolation Valve C 2 6
Without Optional Isolation Valve D 4 6
D6
With Optional Isolation Valve C 2 6
Without Optional Isolation Valve D 4 6
D — WITHOUT ISOLATION VALVE
CAUTION
Do not run any hazardous voltage wiring in the control
panel sections associated with extra-low voltage wiring.
Damage to machine could occur as a result.
CAUTION
Do not attempt to start compressor or oil pump (even for a
rotation check) or apply test voltage of any kind while
either chiller module is under dehydration vacuum. Motor
insulation breakdown and serious damage may result.