Carrier KFFEH Series - User Manual

Installation Instructions
NOTE: Read the entire instruction manual before starting the
installation.
SAFETY CONSIDERATIONS
Installing and servicing of heating and air conditioning equipment can be
hazardous due to system pressures and electrical components. Only
trained personnel should install or service heating and 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 personnel. When working on heating
and air conditioning equipment, observe precautions in literature, on
tags, and on labels attached to the unit.
Follow all safety codes. Wear safety glasses and work gloves. Have a
fire extinguisher available.
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 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.
KFFEH
Electric Heater Packages
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Before beginning any installation or modification, be sure the main
electrical disconnect switch(es) is in the OFF position. There may be
more than one power supply. Tag the disconnect switch(es) with a
suitable warning label.
Table 1 – EH Heater Table
HEATER
PART NO.
kW
@ 240V
VOLTS/PH
STAGES (kW
OPERATING)
INTERNAL CIRCUIT
PROTECTION
FAN COIL SIZE USED
WITH
HEATING CAP.
*
@ 230V
*. Does not include heat from blower motor.
KFFEH8401N03 3 230/1 3 None
18
†
9,400
KFFEH8501N05 5 230/1 5 None
18
†
†. Size 18 fan coil has a special 6-pin connector. Do not modify wiring.
15,700
KFFEH8801N08 8 230/1 8 None
18
†
25,100
KFFEH8901N10 10 230/1 10 None
18
†
31,400
KFFEH0401N03 3 230/1 3 None 24 9,400
KFFEH0501N05 5 230/1 5 None 24–60 15,700
KFFEH0801N08 8 230/1 8 None 24–60 25,100
KFFEH0901N10 10 230/1 10 None 24–60 31,400
KFFEH3201F20 20 230/1 5, 20
Fuse
‡
‡. Single point wiring kit required for these heaters.
30–60 62,800
KFFEH8401C05 5 230/1 5 Circuit Breaker
18
†
15,700
KFFEH8501C08 8 230/1 8 Circuit Breaker
18
†
25,100
KFFEH8601C10 10 230/1 10 Circuit Breaker
18
†
31,400
KFFEH2401C05 5 230/1 5 Circuit Breaker 24–60 15,700
KFFEH2501C08 8 230/1 8 Circuit Breaker 24–60 25,100
KFFEH2601C10 10 230/1 10 Circuit Breaker 24–60 31,400
KFFEH3301C20 20 230/1 5, 20 Circuit Breaker 30–60 62,800
KFFEH2901N09 9
230/1
**
**. Field convertible to 3 phase.
3, 9 None 36–60 28,200
KFFEH3001F15 15 230/1 5, 15
Fuse
‡
24–60 47,100
KFFEH3101C15 15 230/1 5, 15 Circuit Breaker 24–60 47,100
3 Phase Only
KFFEH1601315 15 230/3 5, 15 None 36–60 47,100
KFFEH2001318 18 230/3 6, 12, 18 None 42–60 56,500
3 Phase, Factory Shipped (field convertible to single phase)
KFFEH3401F24 24 230/3 8, 16, 24 Fuse 48, 60 78,300
KFFEH3501F30 30 230/3 10, 20, 30 Fuse 48, 60 94,100

Summary

Safety Considerations and Warnings

Electrical Shock Hazard Warning

Critical warning about electrical shock hazard before installation or modification.

Procedure 1 - Install Electric Heater Assembly

Procedure 2 - Attach Fuse Box or Circuit Breaker Box

Procedure 3 - Electrical Connections

Wire 24 V Control Systems

Guidelines for wiring 24V control systems, including thermostat and unit connections.

Transformer Wiring

Details on transformer wiring for 230V and 208V applications.

3 kW to 10 kW Non-Fused or Non-Circuit Breaker Models Wiring

Heater Staging

Information on heater staging requirements and compatibility with thermostats.

Rectifier and Time Delay Boards

Explanation of rectifier boards, time delay features, and jumper configurations.

Power Connections

Unprotected Heaters Wiring

Wiring guidelines for unprotected heaters, including single-supply circuits.

9 kW Heater Single to 3-Phase Conversion

Procedure to convert a 9-kW heater from single-phase to 3-phase supply.

Circuit Breaker Heaters Wiring

Wiring instructions for circuit breaker heaters, covering single and dual supply circuits.

Fused Heaters Wiring

Wiring guidelines for fused heaters, including single and multiple supply circuits.

Ground Connections

Fan Speed Selection

PSC Motor Speed Tap and Fan Relay

Guide to selecting motor speeds using fan relay and speed taps.

Discrete Tap BLDC Motors Speed Selection

Instructions for selecting motor speeds on BLDC motors using factory terminals.

Procedure 4 - Conversion of Circuit Breaker for Downflow Applications

Procedure 5 - Attach Wiring Diagram and Rating Label

Procedure 6 - Verify Installation

Carrier KFFEH Series Specifications

General

Brand	Carrier
Model	KFFEH Series
Category	Heater
Language	English