48/50FP,JP,MP,NP
50FPX,FPY,JPX,JPY
50FB,JB,NB
Accessory Outdoor-Air Cfm Kit
Installation Instructions
Part No. 50DJ902791
CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Transducer Installation (48/50FP,FPX,FPY,JP,
JPX,JPY,NP and 50FB,JB,NB Units) . . . . . . . . . . . . 1
Transducer Installation (48/50MP Units) . . . . . . . . . . 6
Airflow Duct (48/50FP,FPX,FPY,JP,JPX,JPY,NP
and 50FB,JB,NB Units). . . . . . . . . . . . . . . . . . . . . . . . . 6
Airflow Duct (48/50MP Units) . . . . . . . . . . . . . . . . . . . . . 9
UNIT CONFIGURATION. . . . . . . . . . . . . . . . . . . . . . . . . . 11
To use the HSIO Keypad Module . . . . . . . . . . . . . . . . 11
To use the Service Tool or
Building Supervisor. . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Fig. 1 — Mounting Brackets,
48/50FB,FP,FPX,FPY,JB,JP,NB,NP034-048 Units
PACKAGE CONTENTS
UNIT
ALL
QUANTITY — ITEM NAME
1 — 8 in. x 4 in. airflow duct assembly
5 — Brackets*
2 — Pieces 1/4-in. OD tubing (50 ft total)
1 — Transducer
Assorted screws and grommets
*Not all brackets will be used in each installation. Refer to Fig. 1, 10,
or 13 for the correct bracket usage for your application.
GENERAL
The accessory Outdoor Air CFM Kit is for use with the following units:
• 48FP034-104
• 48JP034-064
• 48NP034-074
• 50FB,FPX,FPY034-104
• 50FP,JP,NB,NP034-074
• 50JB,JPX,JPY034-064
• 48/50MP62L-10R
The optional factory-installed economizer is required. The
economizer is standard on 48/50MP units.
Installation of this accessory on a 48/50MP unit also
requires a separate field-supplied 24-v (20 va minimum) transformer. Use part no. P201-2201 or a 20 va equivalent
It may be necessary to supply a certain amount of fresh outdoor air based on occupancy or square footage of the conditioned space to comply with the latest ASHRAE (American
Society of Heating, Refrigeration, and Air Conditioning Engineers) standards. When installed per these installation instructions, this accessory will measure the quantity of outdoor air
(ft3/minute) brought into the conditioned space through the
economizer dampers. If the measured outdoor cfm decreases to
a user-configured set point, the unit control will override the
minimum damper position on the economizer to maintain outdoor air cfm at the set point. Consult the current release of the
ASHRAE 62 Standard for ventilation requirements to determine the necessary outdoor-air quantities.
INSTALLATION
Transducer Installation (48/50FP,FPX,FPY,JP,
JPX,JPY,NP and 50FB,JB,NB Units)
SIZE 034-048 UNITS — A transducer mounting bracket is
used to install the transducer into the auxiliary control box. See
Fig. 1 for correct bracket.
The auxiliary control box is located at the far left corner
when viewing the unit from the main control box end (see
Fig. 2). To install the transducer:
1. Mount transducer bracket in the right-hand side of the
control box using the pre-drilled holes below terminal
block 4 (TB4). See Fig. 3.
NOTE: On units with inlet guide vanes, the bracket
will be mounted over the duct pressure sensor (DP).
See Fig. 3.
2. Mount the transducer to the bracket. Be sure the pressure ports at the bottom are pointing towards the left
side of the control box as in Fig. 3.
3. Connect red and brown wires labeled OACFM-24-1
and OACFM-24-2 in the control box wire harness to
the 2 transducer terminals marked IN, 24VAC.
4. Connect the pink wire in the control box wire
harness labeled OACFM + to terminal OUT + on the
transducer.
5. Connect the black wire in the control box wire
harness labeled OACFM – to terminal OUT – on the
transducer.
6. Proceed to Airflow Duct section on page 6.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111
Catalog No. 534-749
Printed in U.S.A.
Form 48/50-55SI
Pg 1
9-99
Replaces: 48/50M,N-1SI
Book 1 1
Tab 1a 1b
LEGEND
PIC — Product Integrated Controls
Fig. 2 — Auxiliary Control Box Location,
48/50FP,FPX,FPY,JP,JPX,JPY,NP and 50FB,JB,NB034-048 Units (034 and 038 Unit Shown)
2
3
—
—
—
—
—
—
—
LEGEND
Building Pressure Transducer
Duct Pressure Transducer
Inlet Guide Vanes
Power Exhaust Damper Motor
Power Exhaust
Plug
Pressure Sensor
Fig. 3 — Transducer Bracket and Transducer Mounting Location, 48/50FP,FPX,FPY,JP,JPX,JPY,NP and 50FB,JB,NB034-048 Units
BP
DP
IGV
PEDM
PEM
PL
PS
SIZE 054-104 UNITS — The transducer mounts directly into
the auxiliary control box. No bracket is necessary. The auxiliary control box is behind the filter section doors on the left side
of the unit when viewing the unit from the main control box
end. See Fig. 4. To install the transducer:
1. Mount the transducer below the check filter switch and
above the 24 v power supply (PS) using the factory
predrilled holes. See Fig. 5. Mount so that the transducer is in a vertical position and the pressure ports are
at the top of the sensor pointing towards the right side
of the control box as shown in Fig. 5.
2. Connect red and brown wires labeled OACFM-24-1
and OACFM-24-2 in the control box wire harness to
the 2 transducer terminals marked IN, 24 VAC.
3. Connect the pink wire in the control box wire
harness labeled OACFM + to terminal OUT + on the
transducer.
4. Connect the black wire in the control box wire
harness labeled OACFM – to terminal OUT – on the
transducer.
5. Proceed to Airflow Duct section on page 6.
LEGEND
PIC — Product Integrated Controls
Fig. 4 — Auxiliary Control Box Location,
48/50FP,FPX,FPY,JP,JPX,JPY,NP and 50FB,JB,NB054-104 Units (48FP074 Unit Shown)
4
BP
C
DP
IGV
MPER
OA CFM
PCB
PEC
PEDM
PEM
PL
PS
TB
—
—
—
—
—
—
—
—
—
—
—
—
—
LEGEND
Building Pressure Transducer
Contactor
Duct Pressure Transducer
Inlet Guide Vanes
Modulating Power Exhaust Relay
Outdoor Air CFM
Power Exhaust Circuit Breaker
Power Exhaust Contacts
Power Exhaust Damper Motor
Power Exhaust Motor
Plug
Pressure Sensor
Terminal Board
Fig. 5 — Transducer Mounting Location,
48/50FP,FPX,FPY,JP,JPX,JPY,NP and 50FB,JB,NB054-104 Units
5
Transducer Installation (48/50MP Units) — The
Airflow Duct (48/50FP,FPX,FPY,JP,JPX,JPY,NP
and 50FB,JB,NB Units)
transducer mounts directly into the auxiliary control box in the
supply fan section of the unit. No bracket is necessary. The
auxiliary control box is behind the first door on the right-hand
side of the unit when viewing the unit from the main control
box end. See Fig. 6.
To install the transducer:
1. Mount the control transformer in the main unit control
box.
2. Mount the transducer next to the fan status switch
using the factory pre-drilled holes. See Fig. 7.
3. Locate 4 wires from the main unit control box to the
auxiliary control box (red, brown, pink, black).
4. In the main unit control box, connect the 4 wires to the
following parts:
• Red and brown to field-supplied 24-v transformer
(secondary terminals)
• Pink to TB2, terminal 9
• Black to TB2, terminal 10
5. Connect the primary terminals of the 24-v transformer
to the 115-v power supply:
• Black to TRAN2 primary power supply
• White to TRAN2 primary power supply
6. In the auxiliary control box, connect the wires to the
following parts:
• Red and brown to the 2 transducer terminals marked
IN, 24 VAC
• Pink to terminal OUT+ on the transducer
• Black to terminal OUT– on the transducer
7. Proceed to Airflow Duct section on page 9.
SIZE 034-048 UNITS
1. Mount the large bracket shown in Fig. 1 to the airflow
duct as shown in Fig. 8 using 2 screws. When installing screw no. 2, use the screw from the airflow sensor
leg (see Fig. 8). Install this screw through the bracket,
airflow duct, and into the sensor leg.
NOTE: DO NOT over-tighten this screw.
2. Connect floor mounting bracket shown in Fig. 1 to the
8-in. flange end of the airflow duct (see Fig. 8).
3. Put 1 tube grommet in each of the 2 holes on the 4-in.
end of the airflow duct (see Fig. 8).
4. Remove economizer hood (see Fig. 2), and mount
assembly to the center post of the economizer dampers
with the 8-in. opening facing the end hood. See Fig. 9.
Use the third and fourth screws up from the bottom in
the center post to mount the assembly.
NOTE: The bottom support bracket (8-in. end) should
line up with a screw on the horizontal section of the
economizer floor. Use this screw to secure the support
bracket to the floor of the economizer section. See
Fig. 9.
5. Mark the ends of the tubing (HI and LO) and run both
lengths as shown in Fig. 9.
6. Connect the high-pressure tube between the HI port on
the transducer and the port on the airflow sensor closest to the 8-in. duct opening.
7. Connect the low-pressure tube between the LO port on
the transducer and the port on the airflow sensor closest to the economizer dampers.
8. Proceed to Unit Configuration section on page 11.
Fig. 6 — Auxiliary Control Box Location, 48/50MP Units
DPS
IFCB
CF
IFC
BPS
BPS
CF
DPS
FS
IFC
IFCB
—
—
—
—
—
—
FS
LEGEND
Building Pressure Switch
Check Filter
Duct Pressure Switch
Fan Status
Indoor Fan Contactor
Indoor Fan Circuit Breaker
IN
24 VAC
OUT+
OUT-
PRESSURE
PORTS
ACCESSORY OUTDOOR AIR CFM TRANSDUCER
Fig. 7 — Transducer Mounting Location, 48/50MP Units
6
Fig. 8 — Large and Floor Mounting Bracket Locations,
48/50FP,FPX,FPY,JP,JPX,JPY,NP and 50FB,JB,NB034-048 Units
Fig. 9 — Airflow Duct Assembly Mounting Location,
48/50FP,FPX,FPY,JP,JPX,JPY,NP and 50FB,JB,NB034-048 Units
7
SIZE 054-104 UNITS
1. Mount bracket from Fig. 10 to the airflow duct using
2 screws as shown in Fig. 11. When installing screw
no. 2, use the screw from the airflow sensor leg (see
Fig. 11). Install this screw through the bracket, airflow
duct, and into the sensor leg.
NOTE: DO NOT over-tighten this screw.
2. Put 1 tube grommet in each of the 2 holes on the 4-in.
end of the airflow duct (see Fig. 11).
3. Remove lower economizer damper panel (see Fig. 4),
and mount assembly to the center post of the economizer dampers with the 8-in. opening facing the end
hoods. See Fig. 12. Use the fourth and fifth screws
up from the bottom in the center post to mount the
assembly.
4. Mark the ends of the tubing (HI and LO) and run both
lengths as shown in Fig. 12.
5. Connect the high-pressure tube between the HI port on
the transducer and the port on the airflow sensor closest to the 8-in. duct opening.
6. Connect the low-pressure tube between the LO port on
the transducer and the port on the airflow sensor closest to the economizer dampers
7. Proceed to Unit Configuration section on page 11.
Fig. 10 — Mounting Bracket, 48/50FP,FPX,FPY,
JP,JPX,JPY,NP and 50FB,JB,NB054-104 Units
Fig. 11 — Bracket Mounting Location,
48/50FP,FPX,FPY,JP,JPX,JPY,NP and
50FB,JB,NB054-104 Units
Fig. 12 — Airflow Duct Assembly Mounting Location,
48/50FP,FPX,FPY,JP,JPX,JPY,NP and 50FB,JB,NB054-104 Units
8
Airflow Duct (48/50MP Units)
1. Mount the hat channel bracket (see Fig. 13) over the
4-in. end of the airflow duct assembly included in the
accessory kit using the 3 screws as shown in Fig. 14.
2. Put one tube grommet in each of the 2 holes on the
4-in. end of the airflow duct (see Fig. 14).
3. Remove the block-off plate from the right-hand side
(looking at the main control box) outdoor air hood. See
Fig. 15. Save block-off plate and screws.
4. Drill two 0.14-in. engagement holes in the left-hand
hood side to mount the airflow duct assembly. See
Fig. 16.
5. Mount the airflow duct assembly inside the outdoor air
hood using screws provided.
6. Mark the ends of the tubing (HI and LO) and run both
lengths from the outdoor air hood to the transducer in
the auxiliary control box.
7. Connect the high-pressure tube between the HI port on
the transducer and the port on the airflow sensor closest to the 8-in. duct opening.
8. Connect the low-pressure tube between the LO port on
the transducer and the port on the airflow sensor closest to the 4-in. duct opening.
9. Replace the block-off plate and proceed to Unit Configuration section on page 11.
Fig. 13 — Mounting Brackets, 48/50MP Units
Fig. 14 — Hat Channel Bracket Connections,
48/50MP Units
9
CONDENSER
END OF UNIT
HOOD
TOP
FILTER
RACK
RETURN
AIR END
OF UNIT
HOOD
SIDE
AIRFLOW
SENSOR
BLOCK-OFF
PLATE
Fig. 15 — Airflow Duct Assembly Mounting Location, 48/50MP Units
HOOD
TOP
UNIT
HOOD
SIDE
10 3/8"
5"
BLOCK
OFF
PLATE
16 1/4"
Fig. 16 — Airflow Duct Assembly Mounting Dimensions, 48/50MP Units
10
UNIT CONFIGURATION
3. Select the Controller function.
4. Select the Configuration function.
5. Select the Upload function to upload the present configuration.
6. Select the Edit function, and change the VENT decision to 2.
7. Save the new edits.
8. Select the Download function to download the new
configuration back to the controller.
To program the quantity of air that needs to be brought
into the building, continue with Steps 9-12.
9. Back out 1 screen, and select the Setpnt-Sched
function.
10. Upload the present configuration.
11. Select the Edit function, and enter the outdoor-air cfm
set point (0 to 50,000 cfm).
12. Save the edits and download the new configuration
back to the controller.
At this point, the controls will begin to control the economizer dampers to maintain the quantity of outdoor air specified
in the set point value.
On completion of the above installation instructions, the
controls must be properly configured for this accessory to function correctly. The HSIO keypad module, the service tool, or
the Building Supervisor can be used for this task.
To use the HSIO Keypad Module:
1. Log into the system by pressing
ENTER .
, then
2. Press
to enter the user configuration.
3. Press
until you reach the VENT option.
4. Press
ENTER
.
5. To program the quantity of air that needs to be brought
into the building, press
, and then
until you reach the OCS display (outdoor-air cfm set
point). Enter the required value (0 to 50,000 cfm), and
press ENTER .
At this point, the controls will begin to control the economizer dampers to maintain the minimum quantity of outdoorair specified in the set point value.
To use the
Supervisor:
Service
Tool
or
Building
1. Select the unit.
2. Select the Modify function from the main menu.
11
Copyright 1999 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111
Catalog No. 534-749
Printed in U.S.A.
Form 48/50-55SI
Pg 12
9-99
Replaces: 48/50M,N-1SI
Book 1 1
Tab 1a 1b