Carrier 00EFN900044000A User manual

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-50300236-01 Printed in U.S.A. Form 30-1ASI Pg 1 12-22 Replaces: 30-37SI
Installation Instructions
Part No. 00EFN900044000A, 00EFN900005600A
SAFETY CONSIDERATIONS
Installation of this accessory can be hazardous due to system pres-
sures, electrical components, and equipment location (such as a
roof or elevated structure).
Only trained, qualified installers and service mechanics should in-
stall, start up, and service this equipment.
When installing this accessory, observe precautions in the litera-
ture, labels attached to the equipment, and any other safety precau-
tions that apply.
• Follow all safety codes.
• Wear safety glasses and work gloves.
• Use care in handling and installing this accessory.
PACKAGE CONTENTS
GENERAL
These instructions cover installation of the dual chiller thermistor
accessory. If two chillers are installed in parallel, additional chilled
water sensors (one for each chiller) must be installed in the com-
mon leaving water piping. The accessory kit contains the required
thermistors, wells, and wiring connectors. This accessory is not re-
quired for chillers piped in series.
INSTALLATION (00EFN900044000A)
To prepare the chillers for parallel operation, perform the follow-
ing procedure:
1. Lock out and tag all disconnects.
2. Determine the location for the thermistor wells. The well loca-
tions must be in the common leaving water header. See Fig 1.
DO NOT relocate the chiller’s leaving water thermistors. They
must remain in place for the unit to operate properly.
3. Install the thermistor wells. The thermistor well is a 1/4 in.
NPT fitting. See Fig. 2. Select a location that will allow for
removal of the thermistor without any restrictions. Installa-
tion method will depend on the type of piping.
4. Insert the thermistors into the wells until the O-rings on the
thermistors reach the well body. Use the nut on the thermis-
tors to secure the thermistors in place.
It is recommended that a small amount of heat compound
(such as Dow Corning 340 Heat Sink Compound) be inserted
with the thermistor for better heat transfer.
5. Once the thermistors are in place, it is recommended that a
wire loop be made and secured with a wire tie to the chilled
water pipe. This will provide strain relief. See Fig. 3.
6. The wiring connector (part no. HY06AM016) comes
attached to the thermistor lead. Run connector wiring to the
chiller control box of the master and slave chillers. Plug the
connectors into MBB-J6 CH-3 on the main base board for
30RB060-300, 30XA080-501 fixed speed and 30XW150-
400 units. See Fig. 4. For 30XV140-500 plug the connectors
into SIOB-B J-25 (AI-03). See Fig. 5. For 30RC065-152 plug
the connectors into SIOB-B J-25 (AI-01). See Fig. 5.
7. Restore power to unit.
NOTE: For 30RB315-300 units, as well as all units using the dual
chiller algorithm, a Carrier Comfort Network®(CCN) bus must be
connected between the two modules.
WARNING
Electrical shock can cause personal injury and death. Shut off
all power to this equipment during installation. There may be
more than one disconnect switch. Tag all disconnect locations
to alert others not to restore power until work is completed.
Table 1 — Package Contents (00EFN900044000A)a
NOTE(S):
a. Accessory 00EFN900044000A is used with 30RB060-300, 30RC065-152,
30XA080-501 fixed speed, 30XW150-400 and 30XV140-500 units. 30XA fixed
speed units are identified by a number in the 9th position of the model number;
for example, 30XAB2006-------.
ITEM PART NO. QUANTITY
Thermistor 00PPG000008106A 2
Well 00PPG000008000A 2
Connectorb
b. Connector comes wired to the thermistor.
HY06AM016 2
Table 2 — Package Contents (00EFN900005600A)a
NOTE(S):
a. Accessory 00EFN900044000A is used with 30RB060-300, 30RC065-152,
30XA080-501 fixed speed, 30XW150-400 and 30XV140-500 units. 30XA fixed
speed units are identified by a number in the 9th position of the model number;
for example, 30XAB2006-------.
ITEM PART NO. QUANTITY
Thermistor 00PPG000008106A 2
Well 00PPG000008000A 2
Connectorb
b. Connector comes wired to the thermistor.
HY84EE004 2
AUX 1 Board CEPLP130567-02-SA 2
CB4 HH83ZB010 2
Harness 00PPN500011200A 2
30RB060-300, 30XA Fixed Speed 080-501,
30XA Variable Speed 140-352, 30XW150-400,
30XV140-500, 30RC065-152
Dual Chiller Thermistor Accessory

2
Fig. 1 — Accessory Thermistor Location (30RB/30RC Units Shown)
INSTALLATION (00EFN900005600A)
To prepare the chillers for parallel operation, perform the follow-
ing procedure:
1. Lock out and tag all disconnects.
2. Determine the location for the thermistor wells. The well loca-
tions must be in the common leaving water header. See Fig 1.
DO NOT relocate the chiller’s leaving water thermistors. They
must remain in place for the unit to operate properly.
3. Install the thermistor wells. The thermistor well is a 1/4 in.
NPT fitting. See Fig. 2. Select a location that will allow for
removal of the thermistor without any restrictions. Installa-
tion method will depend on the type of piping.
4. Insert the thermistors into the wells until the O-rings on the
thermistors reach the well body. Use the nut on the thermis-
tors to secure the thermistors in place.
It is recommended that a small amount of heat compound
(such as Dow Corning 340 Heat Sink Compound) be inserted
with the thermistor for better heat transfer.
5. Once the thermistors are in place, it is recommended that a
wire loop be made and secured with a wire tie to the chilled
water pipe. This will provide strain relief. See Fig. 3.
6. Install Aux Board 1 on right side of wall of power box, on the
mounting studs located below Aux Board 3. See Fig. 7. Dip
switch settings on Aux Board 1 (refer to Fig. 6 for location)
should be set as follows:
7. The wiring connector (part no. HY84EE004) comes attached
to the thermistor lead. Run connector wiring to the chiller
power box on the master and slave chillers. Plug the connec-
tors into Aux Board 1 (included in accessory kit and part of
installation) connector J6. See Fig. 6.
8. Install circuit breaker CB-4 inside power box on bracket as
shown in Fig. 8. Connect the red wire labeled CB4-1 to CB-4
and connect the other end of the wire labeled TB11-24VPOS
to terminal block TB11-X1. Connect the brown wire labeled
TB11-24VNEG to terminal block TB11-X2. Using wiring
harness (part no. 00PPN500011200A), connect power from
CB-4 to Aux Board 1 (J1) at location shown in Fig. 6. Neatly
route wiring harness so wiring is protected from damage.
9. Using the accessory-supplied wiring harness (part no.
00PPN500011200A), connect the plug marked AUX1-J9 to
the J9 connection on Aux Board 1 (see Fig. 6). Connect the
other end of the harness to terminal blocks TB-P-1, TB-P-2,
LEGEND
NOTE: This is a simplified piping diagram — not all hydronic specialties are shown.
LWT — Leaving Water (Fluid) Temperature
— Field Wiring
— Field Communication Wiring
Master Chiller
Control
Box
Slave Chiller
Pump and Check Valve
or Isolation Valve
Dual Chiller
LWT Sensors
and Wells
Pump and Check Valve
or Isolation Valve
123 456
7
8
ON
OFF
= Switch Location
a30-5938

3
and TB-P-3 in power box. Neatly route wiring harness so
wiring is protected from damage.
10. Restore power to unit.
11. Refer to the Controls, Start-Up, Operation, Service and Trou-
bleshooting guide for configuration information.
Fig. 2 — Accessory Leaving Water Thermistor Well
Fig. 3 — Accessory Leaving Water Thermistor
Fig. 4 — Chiller Main Base Board
5/8 in.
Hex 1/4-18 NPT
6 in. Minimum
Clearance for
Thermistor
Removal
1.188 in. 2.315 in.
Wire Tie
Loop Thermistor Wire and
Secure to Chilled Water Pipe
Insert Thermistor Until
O-Ring Meets the
Thermistor Well Body
221
221
221
221
195
195
195
195
195
195
195
CH1 CH2 CH3 CH4
CH11 CH12
Connector
HY06AM016
Installation
Location
CH13 CH14 CH
15A
J4
ANALOG
INPUTS
J3
J2C
J2B
J15
J1A
J9D
+ G –
DISCRETE
INPUTS
J5A
C
16A
CH
15B
C
C
CH16B
11 C16
J2A
TR1 TR2 TR3 TR4 TR5
CH19 CH20 CH21 CH22 CH23 CH24 CH25 CH26
J8
CH17 CH18
J5B J5C
CH5 CH6 CH7 CH8 CH9
J7A J7B J7C J7D
RELAY
OUTPUTS
MOV1
C41 C42 C43
C32 C33 C34 C35
12/11 12/11
J10 19 J12 J13 + G -
STATUS
J9A
K1 K2
D15
J6
CCN
CH10
+ G –
SIO
(LEN)
J9C J9B
+ G –
THERMISTORS PRESSURES
a30-4721
NOTE: Does not apply to 30XA140-352 variable
speed units.

4
Fig. 5 — SIOB-B
Connector HY06AM016
Installation Location
for 30XV
Connector HY06AM016
Installation Location
for 30RC

5
Fig. 6 — AUX Board
12345678
ON
100K
100K
100K
CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8
TR1 TR2 TR3 TR4 TR5 TR6 TR7 TR8
STATUS SIO (LEN)
Location of
Serial Number
24 VAC
CH13 CH14
J9
J1
CH9 CH10 CH11 CH12
JP2
C61
CH13
D12 JP1
L3
L5
U21
L2
D6
D5
Q5 Y1
D7
D8
S1
D3
U1
Q1
U5
U6
U7
U8
U9
Q10
Q11
U10
J4
J3
J2
U4
U2
Q12
Q60
3 2 1
– G +
3 2 1
– G +
DIP Switch
J5
J6
J7 J8
Power from
CB-4 Connects
Here
Connect LEN
Wiring Harness
(00PPN500011200A)
Here
a30-5941
Thermistor Connector
(HY84EE004) Installation
Location
NOTE: Applies only to 30XA140-352 variable
speed units.

6
Fig. 7 — AUX Board Location
Fig. 8 — CB-4 Location
Power Box,
Right Inside View
AUX Board 1
Mounting
Location
a30-5939
NOTE: Applies only to 30XA140-352 variable speed units.
a30-5940
Mounted on
Cabinet Frame
NOTE: Applies only to 30XA140-352 variable speed units.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-50300236-01 Printed in U.S.A. Form 30-1ASI Pg 8 12-22 Replaces: 30-37SI
© 2022 Carrier