HVAC Partners EHC09AKCN User Manual

482 01 2231 02 4/27/15
Specifications are subject to change without notice
INSTALLATION INSTRUCTIONS
ELECTRIC HEAT ACCESSORY
EHC09AKCN, EHC15AKF, EHC15AKB, EHC20AKF, EHC20AKB,
EHC25AHCF, EHC30AHCF
DANGER, WARNING, CAUTION, and NOTE
The signal words DANGER, WARNING, CAUTION, and NOTE
are used to identify levels of hazard seriousness. The signal
word DANGER is only used on product labels to signify an im-
mediate hazard. The signal words WARNING, CAUTION, and
NOTE will be used on product labels and throughout this manual
and other manuals that may apply to the product.
DANGER − Immediate hazards which will result in severe per-
sonal injury or death.
WARNING − Hazards or unsafe practices which could result in
severe personal injury or death.
CAUTION − Hazards or unsafe practices which may result in
minor personal injury or product or property damage.
NOTE − Used to highlight suggestions which will result in en-
hanced installation, reliability, or operation.
Signal Words in Manuals
The signal word WARNING is used throughout this manu-
al in the following manner:
The signal word CAUTION is used throughout this manu-
al in the following manner:
Signal Words on Product Labeling
Signal words are used in combination with colors and/or
pictures on product labels.
WARNING
Safety Labeling and Signal Words
!
CAUTION
WARNING
!
ELECTRICAL SHOCK HAZARD.
Failure to follow this warning could result in
death and/or personal injury.
Installation or repairs made by unqualified persons
can result in hazards to you and others. Installation
must conform with local building codes or, in the
absence of local codes, with National Electrical Code
ANSI/NFPA 70−1996 or current edition.
The information contained in this manual is intended
for use by a qualified service technician familiar with
safety procedures and equipped with the proper
tools and test instruments.
Shut OFF electric power at unit disconnect and/or
service panel before beginning the following proce-
dures.
!
WARNING
USE
EHC heater kits are designed for use with the Observert
Communicating Wall Control and FCM4X communicating fan coil.
When used with the Observer communicating system the electric
heater will be automatically recognized and the airflow will be
configured automatically.
INSTALLATION
INSTALL ELECTRIC HEATER ASSEMBLY
NOTE: Ensure heater coils are not deformed or damaged during
heater installation.
1. Make sure power to unit is off.
2. Remove blower access panel of fan coil unit.
UNIT DAMAGE HAZARD.
Failure to follow this caution may result in property
damage.
Before installation of heater, the black and yellow
pigtail leads must be removed from the fan coil board
or wire harness to prevent possible damage to the
product. Electrical power will be provided to the
board through the heater circuit plug.
!
CAUTION
3. Disconnect 2 power wires (black and yellow pigtail leads) from
fan control board or wire harness (if applicable) and discard.
Wires may be part of a plug assembly or attached to terminals
L1 and L2. Remove cooling control plate from fan coil (if
equipped). For 24kW, and 30kW heaters, remove adapter plate.
(See Figure 1)
4. Insert heater assembly into front of fan coil so that element rods
engage holes in rear heat shield.
5. Attach heater control plate to fan coil using 2 screws provided.
For 24kW, and 30kW heater models, attach front of heater to fan
deck using third screw. (See Figure 1)

HVAC Partners EHC09AKCN Specifications

General

Type	Electric Heater
Heating Capacity	9 kW
Voltage	400 V
Frequency	50 Hz
Current	13 A

Summary

Safety Labeling and Signal Words

DANGER, WARNING, CAUTION, and NOTE Definitions

Defines signal words DANGER, WARNING, CAUTION, and NOTE for hazard identification.

Signal Words in Manuals

Explains the use of signal words WARNING and CAUTION within the manual.

Signal Words on Product Labeling

Describes signal word usage in combination with colors/pictures on product labels.

INSTALLATION

INSTALL ELECTRIC HEATER ASSEMBLY

Instructions for installing the electric heater assembly into the fan coil unit.

ATTACH FUSE BOX OR CIRCUIT BREAKER BOX

Fused Model Installation

Instructions for attaching fuse boxes for 15kW and 20kW fused models.

Circuit Breaker Model Installation

Instructions for attaching circuit breaker assemblies for 5kW-20kW models.

ELECTRICAL CONNECTIONS

Wire 24V Control Systems

Details on wiring 24V control systems, including connections, transformer, and staging.

Power and Ground Connections

Wiring for Different Heater Types

Details wiring for unprotected, circuit breaker, and fused heaters.

Grounding Requirements

Explains NEC and local code requirements for electrical grounding.

Installation Procedures

Fan Speed and Circuit Breaker Conversion

Covers fan speed selection and converting circuit breakers for downflow applications.

Final Steps and Verification

Includes attaching labels and verifying the entire installation before powering on.

EHC09AKCN Wiring Diagram

Schematic Diagram

Provides the schematic wiring diagram for the EHC09AKCN model.

Component Arrangement

Illustrates the component layout for the EHC09AKCN model.

EHC15AKF/B Wiring Diagram

Schematic Diagram

Provides the schematic wiring diagram for the EHC15AKF/B model.

Component Arrangement

Illustrates the component layout for the EHC15AKF/B model.

EHC20AKF/B Wiring Diagram

Schematic Diagram

Provides the schematic wiring diagram for the EHC20AKF/B model.

Component Arrangement

Illustrates the component layout for the EHC20AKF/B model.

EHC25AHCF, EHC30AHCF Wiring Diagram

Schematic Diagram

Provides the schematic wiring diagram for EHC25AHCF/EHC30AHCF models.

Component Arrangement

Illustrates the component layout for EHC25AHCF/EHC30AHCF models.

EHC25AHCF, EHC30AHCF Single Phase Wiring Diagram

Schematic Diagram

Provides the schematic wiring diagram for single phase EHC25AHCF/EHC30AHCF.

Component Arrangement

Illustrates the component layout for single phase EHC25AHCF/EHC30AHCF.