Small Packaged Products 2 to 5 Tons Accessory Electric Heaters Cancels: IIK 564A-24-2 IIK 564A-24- -02 Installation Instructions Electric Heaters 5 20 kw NOTE: Read the entire instruction manual before starting the installation. This symbol indicates a change since the last issue. SAFETY CONSIDERATIONS Installing and servicing air conditioning equipment can be hazardous 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 suggestions 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 operations on this system turn off all main power switches and/or disconnects. There may be more than one switch or disconnect. 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. 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 in SPP Electric Cooling & Electric Heat Pump units. Table Electric Heater Usage Chart UNIT SIZE 50ZP/564A/PAZ 024 0 50ZH/664A/PHZ 024 0 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.. 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.. Verify that unit duct work is installed per base unit instructions. 4. Remove top cover of the unit to access heater compartment (See Fig. ). 5. Locate and remove the heater knockout plate in the indoor blower housing (See Fig. &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.. 7. Install heater, sliding assembly carefully into heater area in the blower housing (See Fig. & 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. ). 0. Non-Fused Units: Adhere schematic in lieu of fused block inside unit panel (See Fig. 2).. Install ground lug in mounting hole provided adjacent to 24-v. compartment (See Fig. 2). ELECTRICAL CONNECTION. 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. Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book PC 0 Catalog No. 55-00086 Printed in U.S.A. Form 50Z-52SI Pg Replaces: 50Z-5SI Tab b 5a
UNIT VIEW ATTACHED LID WITH 4 SCREWS ADHERE GASKET (8 x 2 /4) (ON FUSED MODELS) TO UNIT SIDE PANEL BETWEEN FUSE BLOCK AND PANEL POWER AND CONTROL WIRING THROUGH KNOCKOUT BLOWER HOUSING HEATER AREA is shown on schematic wiring diagrams. NOTE: Use minimum 75 C copper wire only.. Refer to base unit instructions for recommended wiring procedures. 4. Connect low voltage wires as shown in heater schematic diagrams (See Figs. 5-22). These connections must be made in the 24-v. barrier section inside the unit panel (See Fig. 2). 5. Connect field power wiring as shown in heater wiring diagram. All connections should be made inside the unit and comply with the National Electric Code and State and Local Codes. Heaters with factory installed fuses may be installed on a branch circuit protected by either a fuse or circuit breaker. For all other heaters, the branch circuit must be protected by a fuse or a circuit breaker supplied by others. 6. Make all high voltage wire splice connections inside the unit control box (See Figs. 5-22). Use splice connectors provided. Properly insulate connectors. Separate all wires from incoming power leads. 7. Be sure that all electrical terminal connections, clamps, screws, etc. are tight before proceeding. 8. Check wiring diagram supplied with heater for specific connections and information. 9. Check operation as described in Start-Up section. Before performing installation, service or maintenance operations on this system turn off all main power switches and/or disconnects. There may be more than one switch or disconnect. 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. Fig. Unit Control Box (side view) START-UP C0055 Before proceeding, verify that all wiring is correct per factory approved schematic. Notify factory immediately of any discrepancies.. Refer to base unit installation instructions as required. 2. Check for loose terminal connections.. Check that all fuse and circuit breaker short circuit interrupting ratings are adequate. 4. Turn on unit and heater power. 5. Set thermostat to call for heat. 6. Check operation of heater. 7. Check that airflow across the heater is at or above the minimum recommended CFM requirement (See Table 2). Adjust indoor blower heat speed as required. 8. Any modifications or repairs to this equipment without written permission from the factory will be done at the installer s own risk and expense. TABLE 2 Minimum Airflow for Heater Operation UNIT HEAT PUMP ELECTRIC COOLING MINIMUM AIRFLOW (CFM) UNIT SIZE 024 00 06 042 048 0 0 750 900 050 200 500 0 750 900 050 200 500 TROUBLESHOOTING. Fuses -Malfunction will interrupt power to the unit. Check for cause of failure, replace fuses.
TOP VIEW BLOWER HOUSING PRESSOR CONTACTOR POWER WIRING / CONTROL WIRING / / FUSE BLOCK WHEN REQUIRED ADHERE SCHEMATIC WHEN NON-FUSED GROUND LUG LOCATION (SEE #) BARRIER CONTROL PANEL 24V CAPACITORS HEATER CONTACTORS, POWER & CONTROL WIRING HARNESS USE WIRE TIES 5 PLACES (SEE#8) Fig. 2 Unit Control Box (top view) and Schematic Location C0056 2. Limit Switch -Malfunction prevents heating element(s) from being energized. Replace switch if malfunction occurs.. Contactor -Malfunction will not allow heater to energize. Replace faulty contactor. Do not attempt to replace coil or dress contacts. PACKAGE CONTENTS ELECTRIC HEATER PACKAGE CONTENTS. Heater assembly. 2. UPC heater label.. Installation Instructions. 4. Identification label. 5. Schematic on lid door for all fused units. 6. Schematic on sticker to be placed inside unit panel for non-fused units (See Fig. 2). 7. Wire connectors (). 8. Wire ties 6 (5). 9. Screws #0B (2). 0. Splice Connectors (4).. Strip Gasket (8 in. x 2-/4 in.) Fused models only (). 2. Hinged lid with latch Fused models only ().. Ground Lug () See Fig. 2.
Fig. Typical A/C Wiring Schematic 208/20- C0020 4
Fig. 4 Typical Heat Pump Wiring Schematic 208/20- C0022 5
E FUSE BLOCK T E T2 T T4 UNIT PANEL HEATER SECTION Replace Auto Reset with Therm-O-Disc type TX0-F0 Replace with 250VAC type Slo-Blow fuses 7.5/0.0 CONTROL STEPS AMPS 24 2 6./4.7 HEATER FUSES T, T T2, T4 A 50A CPHEATER024B00 C0205 Fig. 5 CPHEATER024B00 Wiring Diagram E FUSE BLOCK T E T2 T HR T4 Replace Auto Reset with Therm-O-Disc type TX0-F0 Replace with 250VAC type Slo-Blow fuses./5.0 CONTROL STEPS AMPS 24 2 54.2/62.5 HEATER FUSES T, T T2, T4 0A A CPHEATER025B00 C02054 Fig. 6 CPHEATER025B00 Wiring Diagram 6
E TO UNIT POWER WIRING Replace Auto Reset with Therm-O-Disc type TX0-F0.8/5.0 CPHEATER026B00 CONTROL STEPS AMPS 24 8./20.8 Fig. 7 CPHEATER026B00 Wiring Diagram C02055 E FUSE BLOCK T E T2 T HR T4 HR4 EL4 Replace Auto Reset with Therm-O-Disc type TX0-F5 Replace with 250VAC type Slo-Blow fuses 5.0/20.0 CPHEATER027B00 CONTROL STEPS AMPS 24 2 72.2/8. Fig. 8 CPHEATER027B00 Wiring Diagram HEATER FUSES T, T T2, T4 A A C02056 7
E FUSE BLOCK T E T2 T HR T4 HR4 EL4 T5 T6 Replace Auto Reset with Therm-O-Disc type TX0-F5 Replace with 250VAC type Slo-Blow fuses 5.0/20.0 CPHEATER028B00 CONTROL STEPS AMPS 24 2 72.2/8. Fig. 9 CPHEATER028B00 Wiring Diagram HEATER FUSES T, T6 T2, T, T4, T5 50A A C02057 E E HR L Replace Auto Reset with Therm-O-Disc type TX0-F0.8/5.0 CPHEATER029B00 CONTROL STEPS AMPS 24 2 0.4/2.0 Fig. 0 CPHEATER029B00 Wiring Diagram C02058 8
E E HR L Replace Auto Reset with Therm-O-Disc type TX0-F0 7.5/0.0 CPHEATER00B00 CONTROL STEPS AMPS 24 2 20.8/24. Fig. CPHEATER00B00 Wiring Diagram C02059 E E HR L Replace Auto Reset with Therm-O-Disc type TX0-F0./5.0 CPHEATER0B00 CONTROL STEPS AMPS 24 2./6. Fig. 2 CPHEATER0B00 Wiring Diagram C020 9
E FUSE BLOCK T E T2 T HR T4 T5 L T6 Replace Auto Reset with Therm-O-Disc type TX0-F0 Replace with 250VAC type Slo-Blow fuses./5.0 CONTROL STEPS AMPS 24 2./6. HEATER FUSES T, T, T5 T2, T4, T6 50A 0A CPHEATER02B00 C0206 Fig. CPHEATER02B00 Wiring Diagram E FUSE BLOCK T E T2 T HR T4 T5 L T6 Replace Auto Reset with Therm-O-Disc type TX0-F5 Replace with 250VAC type Slo-Blow fuses 4.9/9.9 CONTROL STEPS AMPS 24 2 4.4/47.9 HEATER FUSES T, T, T5 T2, T4, T6 A 0A CPHEATER0B00 C02062 Fig. 4 CPHEATER0B00 Wiring Diagram 0
E E CONTACTOR L Replace Auto Reset with Therm-O-Disc type TXX0-F20 5.0 480 CPHEATER04B00 CONTROL STEPS AMPS 24 6.0 Fig. 5 CPHEATER04B00 Wiring Diagram C0206 E E CONTACTOR L Replace Auto Reset with Therm-O-Disc type TXX0-F20 0.0 480 CPHEATER05B00 CONTROL STEPS AMPS 24 2.0 Fig. 6 CPHEATER05B00 Wiring Diagram C02064
E E CONTACTOR L Replace Auto Reset with Therm-O-Disc type TXX0-F20 5.0 480 CPHEATER06B00 CONTROL STEPS AMPS 24 8.0 Fig. 7 CPHEATER06B00 Wiring Diagram C02065 E E CONTACTOR L Replace Auto Reset with Therm-O-Disc type TXX0-F20 20.0 480 CPHEATER07B00 CONTROL STEPS AMPS 24 24.0 Fig. 8 CPHEATER07B00 Wiring Diagram C02066 2
FUSE BLOCK T E T2 T T4 Replace Auto Reset with Therm-O-Disc type TX0-F0 Replace with 250VAC type Slo-Blow fuses.8/5.0 CPHEATER08B00 CONTROL STEPS AMPS 24 8./20.8 Fig. 9 CPHEATER08B00 Wiring Diagram HEATER FUSES T, T4 T2, T 0A 50A C02067 E E TO UNIT POWER WIRING Replace Auto Reset with Therm-O-Disc type TX0-F0 7.5/0.0 CPHEATER09B00 CONTROL STEPS AMPS 24 6./4.7 Fig. 20 CPHEATER09B00 Wiring Diagram C02068
E FUSE BLOCK T E T2 T HR T4 T5 T6 Replace Auto Reset with Therm-O-Disc type TX0-F0 Replace with 250VAC type Slo-Blow fuses./5.0 CPHEATER040B00 CONTROL STEPS AMPS 24 2 54.2/62.5 T, T6 50A Fig. 2 CPHEATER040B00 Wiring Diagram HEATER FUSES T2, T5 A T, T4 0A C02069 E E TO UNIT POWER WIRING Replace Auto Reset with Therm-O-Disc type TX0-F0 5.6/7.5 CPHEATER042B00 CONTROL STEPS AMPS 24 27./. Fig. 22 CPHEATER042B00 Wiring Diagram C02070 4
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Copyright 2002 Carrier Corporation iik564a24 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book PC 0 Catalog No. 55-00086 Printed in U.S.A. Form 50Z-52SI Pg 6 Replaces: 50Z-5SI Tab b 5a