Carrier 50ZPD User manual

Installation Instructions
NOTE: Read the entire instruction manual before starting the
installation.
NOTE: The Dual Point Kit can only be installed on units equipped with
a 2nd electrical entry (knockout), the knockout was added to the
electrical panel starting with the following unit serial numbers:
2711X_ _ _ _ _ and later
X1127_ _ _ _ _ and later
NOTE: Read the entire instruction manual before starting the
installation.
NOTE: Installation Instructions include Single and Dual point
connection instructions separately.
SAFETY CONSIDERATIONS
Improper installation adjustment, alteration, service, maintenance, or use
can cause explosion, fire, electrical shock, or other conditions which
may cause death, personal injury, or property damage. Consult a
qualified installer, service agency, or your distributor or branch for
information or assistance. The qualified installer or agency must use
factory-authorized kits or accessories when modifying this product Refer
to the individual instructions packaged with the kits or accessories when
installing.
Follow all safety codes. Wear safety glasses, protective clothing, and
work gloves. Use quenching cloth for brazing operations. Have a fire
extinguisher available. Read these instructions thoroughly and follow all
warnings or cautions included in literature and attached to the unit.
Consult local building codes, the current editions of the National
Electrical Code (NEC) NFPA 70.
In Canada refer to the current editions of the Canadian Electrical Code
CSA C22.1.
Recognize safety information. This is the safety-alert symbol . When
you see this symbol on the unit and in instructions or manuals, be alert to
the potential for personal injury. Understand these signal words;
DANGER, WARNING, and CAUTION. These words are used with the
safety-alert symbol. DANGER identifies the most serious hazards which
will result in severe personal injury or death. WARNING signifies
hazards which could result in personal injury or death. CAUTION is
used to identify unsafe practices which may result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability, or
operation.
Before proceeding with heater installation, inspect thoroughly for
shipping damage. Notify shipper immediately if any damage is found.
Clean all dirt, dust and moisture from heater package.
Check for proper clearances of live parts, between phases and to ground.
Make sure that all required barriers are in place. Check conductors run in
multiple to insure that they are properly wired. Refer to unit installation
instructions for complete unit installation details. The minimum air
quantity for safe electric heater operation is shown in Table 2.
DESCRIPTION AND USAGE
These heaters are comprised of a separate heater module mounted on the
blower inlet and remote mounted controls located in the unit control box.
Heater models are provided with single point electrical connections for
powering both the heater and the unit.
These heaters are intended for use only in SPP units as noted in Table 1.
PACKAGE CONTENTS
Electric Heater Package Contents
1. Heater assembly, comprised of heater module and control panel
2. UPC heater label
3. Installation Instructions
4. Identification label
5. Wiring label
6. Wire connectors (2)
7. Wire tires-6” (5)
8. Screws #10B (4)
9. Ground lug (1) (See Fig. 8)
10. Bolts 3/8-16 (3)
11. Plug attachment plate
12. Dual Point Electric Rating Label
13. Dual Point Warning Label
INSTALLATION
Single Point Heater Installation
1. Open all electrical disconnects and install lock-out tag before
beginning any installation or service work.
2. Check for proper heater application in Table 1.
3. Remove unit side panel to access blower compartment (See Fig. 1
and Fig. 2).
4. Disconnect wiring to motor by removing speed selection and power
plugs from bottom of motor (See Fig. 2).
5. Remove rear blower support bracket. Remove shipping block and
label under blower if unit has one (See Fig. 2).
6. Remove screws securing blower to front blower support bracket;
slide blower out of unit.
50ZPB, C, D, 50ZHB, C,
PA3Z-A, PH3Z-A, PA4Z, PH4Z, PAJ4, PHJ4, WJA4, WJH4
SMALL PACKAGED PRODUCTS (SPP)
Accessory Electric Heaters 5-20 kW
For 14 SEER, R-410A Manufactured Home
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Before performing installation, service or maintenance operations on
this system, turn off all main power to system. There may be more than
one disconnect switch. Turn off accessory heater power switch if
applicable. Lock out and tag switch with a suitable warning label.

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
2
X= Not Approved Combination
X= Not Approved Combination
7. Open heater package and remove heater module; secure heater
module to standoffs on blower inlet with (3) bolts provided (see
Fig. 3). Adjust mounting position so that all hardware and
sheetmetal clears the heating element wire by at least 1/4 in.
Reinstall heater/blower assembly.
8. Reinstall rear motor support bracket and attached motor wiring.
Reinsert motor power plug and speed tap plug into motor. The
connectors are polarized to prevent mis-wiring.
9. Remove heater wiring cover plate from interior partition between
blower and control box (See Fig. 4) and install heater wiring plug
attachment plate provided with heater.
10. Remove unit front panel to access unit control box compartment.
11. Open heater package and remove heater control panel; set heater
control panel on top of unit (See Fig. 5).
12. Heater control panel will have black and yellow power wires
ending in panel mounted plugs; reach through large rectangular
opening in control panel and snap these plugs into mating openings
in heater wiring plug attachment plate installed in step 9 above (See
Fig. 4).
13. Rotate heater control panel into unit control box area and locate it
into top left corner of control box; secure heater control panel to
unit control box with (4) screws provided (See Fig. 6).
14. Open flexible “fish paper” insulation cover provided with unit
control box and route heater low voltage wires along the bottom of
the unit control box. Route low voltage leads from heater relay(s)
through hole in unit control box and into low voltage splice box.
(See Fig. 6 and Fig. 7.) dress wires and secure them to existing unit
control wires with wire ties provided .
15. Re-close flexible “fish paper” insulation cover; insure unit black
and yellow power “pigtails” from contactor are properly routed
through insulation cover (See Fig. 8).
16. Attach the adhesive backed wiring label provided with the heater to
the back of the access panel near the unit wiring label (See Fig. 1).
17. Return to blower compartment and locate black and yellow power
wires from heater module; these wires will terminate in plug
connectors that mate with the plug from the heater control installed
in Step 13 above. Snap these connectors into place; dress and secure
wires to fan wires with wire ties provided (See Fig. 9).
18. The factory speed tap for electric heat operation is tap 2. Refer to
blower performance table in the unit installation instructions or
pre-sale literature to determine available airflow at duct system
external static pressure. Compare the actual airflow with the
minimum required airflow from Table 2. If tap 2 airflow is lower
than minimum required airflow, recheck blower performance table
to see if minimum airflow can be achieved on tap 3. If tap 3 airflow
meets the minimum CFM requirement, change speed tap for
electric heat from tap 2 to tap 3 in unit control box. See unit
instructions and wiring diagram. If tap 3 airflow does not achieve
minimum CFM requirement, then another electric heater that meets
the minimum CFM requirement must be used.
19. Reattach the blower access panel.
Table 1 – Electric Heater Usage Chart
CPHEATER Agency
Approval kW V PH Circuit Breaker
Air Conditioner Models (PAC) Heat Pump Models (PHP)
24 30 36 42 48 60 24 30 36 42 48 60
125 UL 5 208/240 1 N  
126 UL 5 208/240 1 Y 
127 UL 7.5 208/240 1 N  
128 UL 7.5 208/240 1 Y 
129 UL 10 208/240 1 N 
130 UL 10 208/240 1 Y 
131 UL 15 208/240 1 Y   
132 UL 20 208/240 1 Y     
Table 2 – Minimum Airflow for Heater Operation
Air Conditioner
Unit Size
Minimum Airflow (CFM)
5 kW 7.5 kW 10 kW 15 kW 20 kW
24 600 750 750 X X
30 600 750 750 X X
36 600 750 750 1050 X
42 600 750 750 1050 X
48 600 750 750 1050 1400
60 600 750 750 1050 1400
Heat Pump
Unit Size
Minimum Airflow (CFM)
5 kW 7.5 kW 10 kW 15 kW 20 kW
24 750 800 800 X X
30 750 800 800 X X
36 750 800 800 1200 X
42 750 800 800 1200 X
48 750 800 800 1200 1700
60 750 800 800 1200 1700

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
3
Table 3 – Electric Heater Part Number Information
CPHEATER Diagram
kW @ V / PH / Hz Amps Power
Connection 24v Unit Control Wiring KW Staging
208 240 V PH Hz 208 240 Term
Block
Circuit
Breaker
No.
Stages
Comm
(Brown)
W2
(White)
W3
(Violet) Stage-1 Stage-2
125A03 110070151 3.75 5
208/230 1 60
18 20.8 x -- 1 x x -- 5kw --
126A03 110070152 3.75 5 18 20.8 -- x 1 x x -- 5kw --
127A03 110070153 5.6 7.5 27 31.3 x -- 1 x x -- 7.5kw --
128A03 110070154 5.6 7.5 27 31.3 -- x 1 x x -- 7.5kw --
129A03 110070155 7.5 10 36.1 41.7 x -- 1 x x -- 10kw --
130A03 110070156 7.5 10 36.1 41.7 -- x 1 x x -- 10kw --
131A03 110070157 11.3 15 54.1 62.5 -- x 2 x x x 5kw 10kw
132A03 110070158 15 20 72.1 83.3 -- x 2 x x x 10kw 10kw

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
4
A11167
Fig. 1 – Access Panel and Label Location
A05382
Fig. 2 – Indoor Blower Compartment
CONTROL BOX
A
CCESS PANEL
ELECTRIC HEATER
WIRING LABEL
WARNING
LABEL
ELECTRICAL RATING
LABEL LOCATION
BLOWER ACCESS
PANEL
ELECTRICAL
PANEL
KNOCKOUT HOLE FOR
DUAL POINT
BLOWER MOTOR
BLOWER
SUPPORT
BRACKET
S
PEED SELECTOR
&
POWER PLUG

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
5
A10111
Fig. 3 – Attach Heater Module
A05384
Fig. 4 – Inside Blower Compartment
H
EATER MODULE
BOLTS (3)
H
EATER WIRING PLUG
A
TTACHMENT PLATE
W
ITH PLUG INSTALLED
COVER PLATE