38AE,AK,AKS, 48DR,DRE
48/50DP,DPE
Accessory Packages
Installation Instructions
Accessory Winter Start Package (Time-Delay Relay) 38AE900021
Accessory Relay-Transformer Package 38AE900001
SAFETY CONSIDERATIONS
Installation, start-up and servicing of this equipment can
be hazardous due to system pressures, electrical components, moving parts, and equipment location (roof, elevated
structures, etc.).
Only trained, qualified installers and service mechanics
should install, start up, and service this equipment. Untrained personnel can perform such basic maintenance functions as cleaning coils or replacing air filters. All other operations should be performed by trained service personnel
only.
When working on equipment, observe precautions in literature; tags, stickers, and labels attached to equipment; and
any other safety precautions that apply.
• Follow all safety codes.
• Wear safety glasses and work gloves.
• Use care in handling, rigging, and setting bulky
equipment.
Before performing service or maintenance operations
on unit, turn off main power switch to unit. Electrical
shock could cause personal injury.
GENERAL
Accessory Winter Start Package 38AE900021 provides a
3-minute time delay for the low-pressure switch (LPS). The
relay HN67XZ210 is a normally-closed relay.
Accessory Relay-Transformer Package 38AE900001 allows installation of multiple liquid line solenoids and other
larger 24-v relay loads.
See Table 1 for package numbers.
Table 1 — Usage Table
UNIT
ACCESSORY WINTER
START PACKAGE
38AE012,014,016
38AK007,008,012
38AKS008,009
48DP/DR016,020
48DPE/DRE014
50DP016,020
50DPE014
38AE900021
ACCESSORY RELAY —
TRANSFORMER PACKAGE
38AE900001
—
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 1 1 4 4 4
PC 111
Catalog No. 563-983
Printed in U.S.A.
Form 38/48/50-1SI
Pg 1
3-93
Replaces: 38AE-12SI
Tab 1a 1b 3a 2a 6a 6b
INSTALLATION
(TDR), Winter Start Package 38AE900021 in 38AE012016, 38AK007-012, or 38AKS008,009 condensing units as
follows:
1. See Fig. 1 for location of component in 38AE012, 014,
or 016. See Fig. 3 for location of component in 38AK007012 or 38AKS008,009. Use field-supplied screws and be
certain mounting holes are positioned upwards
(Fig. 4), as device is position sensitive.
2. Run field-supplied wires from quick-connect terminals
in device to 38AE unit controls as shown in Fig. 5. Run
field-supplied wires from quick-connect terminals in device to 38AK,AKS unit controls as shown in Fig. 6.
Relay-Transformer Package — Unit 38AE —
Refer to unit label diagram and install Relay-Transformer
Package 38AE900001 in 38AE012, 014, or 016 condensing
unit as follows:
1. See Fig. 1. Locate component below terminal block 2
(TB2) in unit control box. A knockout is provided in the
bottom of the control box for running wires from the accessory to TB2. Using the bushing nut (coupler) provided, route the 6 wires through the knockout and tighten
the bushing nut. Secure side of accessory to condensing
unit using 2 screws provided.
2. Connect wires to 38AE controls as shown in Fig. 2.
Winter Start Package — Units 38AE,AK,AKS
— Refer to unit label diagram and install time-delay relay
LOCATE WINTER START PACKAGE HERE
RELAY-TRANSFORMER PACKAGE
(SHOWN INSTALLED)
Split System
Fig. 1 — Recommended Locations for Accessory Components in 38AE Units
2
LEGEND
C
CM
HD
HT ANT.
IFC
IFR
LLS
R
RC
RH
SVR
TB
TC
TH
TRAN
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Compressor Contactor
Common
Heat Device
Heat Anticipator
Indoor-Fan Contactor
Indoor-Fan Relay
Liquid Line Solenoid
Accessory Relay (Field Supplied)
Relay, Cooling
Relay, Heating
Solenoid Valve Relay
Terminal Block
Thermostat Cooling
Thermostat Heating
Transformer
Field-Supplied Wiring
*Wires factory supplied, field connected.
Fig. 2 — Accessory Relay-Transformer 38AE900001 Wiring
3
LOCATE WINTER
START PACKAGE HERE
Fig. 3 — Recommended Location for
Accessory Component in 38AK,AKS Units
Fig. 4 — Top View, Winter Start Package
LEGEND
C
HPS
IP
LPS
TDR
—
—
—
—
—
Contactor
High-Pressure Switch
Internal Protector
Low-Pressure Switch
Time-Delay Relay
Field-Supplied Wiring
Fig. 5 — Connection Points, Time-Delay Relay,
Accessory Winter Start Package 38AE900021;
38AE Condensing Units
4
C
CLO
HPS
LPS
—
—
—
—
Contactor
Compressor Lock Out
High-Pressure Switch
Low-Pressure Switch
LEGEND
TDR — Time-Delay Relay
Factory-Supplied Wiring
Field-Supplied Wiring
Fig. 6 — Connection Points, Time-Delay Relay,
Accessory Winter Start Package 38AE900021;
38AK,AKS Condensing Units
TIME DELAY RELAY
(TDR) LOCATION
IFC
KO
KO 7/8"
SNAP BUSHING
TRANSFORMER
LOCATION
Winter Start Package — Units 48DP/DPE,
48DR/DRE, 50DP/DPE — Refer to unit label diagram
and install time-delay relay (TDR) Winter Start Package
38AE900021 in 48DP/DR016,020; 48DPE/DRE014;
50DP016,020; or 50DPE014 unit as follows:
1. See Fig. 7. Locate the time-delay relay in the area shown
in the control box, using field-supplied screws and ensuring that the top terminals are up, as device is position
sensitive (Fig. 4).
2. Run field-supplied wires from quick-connect terminals
in the device to the unit as shown in Fig. 8.
LEGEND
IFC — Indoor-Fan Contactor
KO — Knockout
Fig. 7 — Typical Main Control Box
for 48/50DP,DR Units
5
LEGEND
C
CLO
FPT
HPS
—
—
—
—
Contactor
Compressor Lock Out
Freeze Protection Thermostat
High-Pressure Switch
LPS
TDR
— Low-Pressure Switch
— Time-Delay Relay
Factory-Supplied Wiring
Field-Supplied Wiring
Fig. 8 — Connection Points, Time-Delay Relay, Winter Start Package 38AE900021;
48DP/DPE, 48DR/DRE, 50DP/DPE Units
6
Copyright 1993 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 1 1 4 4 4
PC 111
Catalog No. 563-983
Printed in U.S.A.
Form 38/48/50-1SI
Pg 8
3-93
Replaces: 38AE-12SI
Tab 1a 1b 3a 2a 6a 6b