Accumulator Piping; Time Delay Wiring - Emerson Copeland ZR16 Manual

To prevent flooded start damage due to off cycle migration, the accumulator may be configured on
some systems to allow free drainage from the compressor to the accumulator during the off cycle. When the
above configuration is not possible and the unit charge is over the charge limit shown in Table 5, a
crankcase heater is required.
A
B
Time Delay Relay Specifications
Timer Opens: 1 Electrical Cycle
(.016 Sec. With 60 HZ Operation)
after power is removed
© 2013 Emerson Climate Technologies, Inc.
Printed in the U.S.A.
Application Engineering
B U L L E T I N
Liquid
Level
Drainage
In Off
Cycle
Scroll

Accumulator Piping

Typical Solid State Timer
Fuse
(if used)
System Operating
Thermostat
Other Protective
Devices (if used)

Time Delay Wiring

Accumulator
Figure 2
Line Voltage
Discharge Line
Thermostat (if used)
Timer Closes: Greater than 5 seconds later, whether
power is restored or not
Figure 3
16
AE4-1374 R1
Compressor Contactor
C