Small Packaged Products
2 to 5 Tons
Accessory Electric Heaters
Installation Instructions
Electric Heaters 5–20 kW
NOTE:
Read the entire instruction manual before starting the
installation.
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SAFETY CONSIDERATIONS
Installing and servicing air conditioning equipment can be hazard-
ous due to system pressures, electrical components, and fuel gases.
Only trained and qualified personnel should install, service, or
repair air conditioning equipment.
Untrained personnel can perform basic maintenance functions
such as cleaning coils, or cleaning and replacing filters. All other
operations should be performed by trained service personnel.
When working on air conditioning equipment, observe precautions
in the literature, on tags, and on labels attached to the unit.
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 the signal words DANGER, WARNING, and CAU-
TION. These words are used with the safety-alert symbol. DAN-
GER identifies the most serious hazards which will result in
serious injury or death. WARNING signifies a hazard which could
result in serious injury or death. CAUTION is used to identify
unsafe practices which would result in minor personal injury or
product and property damage. NOTE is used to highlight sugges-
tions which will result in enhanced installation, reliability, or
operation.
Follow all safety codes. Wear safety glasses and work gloves.
Have a fire extinguisher available.
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.
Before performing installation, service or maintenance opera-
tions on this system turn off all main power switches and/or
disconnects. There may be more than one switch or discon-
nect. Turn off accessory heater power switch if applicable.
Electrical shock can cause serious injury or death. TAG
DISCONNECT
SWITCH(S)
WITH
A
SUITABLE
WARNING LABEL.
INTRODUCTION
This electric heater series is engineered, designed and listed to be
installed only in the models shown in Table 1. Before proceeding,
verify the heater label for correct voltage and kW requirements.
DESCRIPTION AND USAGE
These SPP Electric heaters are to be used per Table 1 in SPP
Electric Cooling & Electric Heat Pump units.
Table 1—Electric Heater Usage Chart
UNIT
SIZE
50ZP/564A/PA1Z
024–060
50ZH/664A/PH1Z
024–060
INSTALLATION
HEATER INSTALLATION
NOTE:
Thermostat used must be capable of energizing “G”
(Indoor Fan) on a call for “W” (Heating). If “G” is not energized
system malfunction will occur.
1. Open all electrical disconnects and install lock-out tag before
beginning any installation or service work.
2. Check for proper equipment model number from list.
3. Verify that unit duct work is installed per base unit instruc-
tions.
4. Remove top cover of the unit to access heater compartment
(See Fig. 1).
5. Locate and remove the heater knockout plate in the indoor
blower housing (See Fig. 1 & 2).
6. Remove electric heater from the packaging. Route control and
heater high voltage wire through power and control wiring
knockout as shown in Fig. 1.
7. Install heater, sliding assembly carefully into heater area in the
blower housing (See Fig. 1 & 2). Ensure that mounting holes
of heater align with mounting holes on the unit. Secure heater
assembly with screws provided.
8. Dress wires with wire ties provided. Route heater wires along
existing unit wire bundles behind and away from capacitors.
9. Fused Units: Remove fuse links of the fuse block, attach fuse
block with screws (2) on mounting holes provided and
re-install the fuse links. Attach lid to unit panel with (4)
screws provided. Align with existing mounting holes (See Fig.
1).
10. Non-Fused Units: Adhere schematic in lieu of fused block
inside unit panel (See Fig. 2).
11. Install ground lug in mounting hole provided adjacent to 24-v.
compartment (See Fig. 2).
ELECTRICAL CONNECTION
1. Open all electrical disconnects and install lock-out tag before
beginning any installation or service work.
2. All electrical connections, wire sizes and type of conduit shall
meet the National Electric Code and State and Local Codes.
Main power supply, minimum wire sizes, circuits, fusing, etc.
Cancels: IIK 564A-24-1
IIK 564A-24-2
11-01
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1
1
Tab
1b 5a
PC 101
Catalog No. 535-00045
Printed in U.S.A.
Form 50Z-51SI
Pg 1
Replaces: 50Z-1SI
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