Johnson Controls Unitary Products
669997-UAI-H-0514
ACCESSORY KIT INSTALLATION MANUAL
ELECTRIC HEATER ACCESSORY (6HK SERIES)
FOR USE WITH MODELS: AHR / AHE / AHV / RFCX*E / RFCX*P
GENERAL INFORMATION
These instructions cover the installation of the following electric
heater models with AHR, AHE, and AHV single piece air han-
dlers. The 6HK series of electric heat kits use a single polarized
plug to easily connect the air handler power and controls.
These electric heat accessories are used for applications of
cooling with electric heat and heat pump with electric heat.
Each of the air handler unit models are approved for use with
specific electric heat accessories. The air handler unit installa-
tion instructions or name plate list the possible combinations
and other important electrical data and limitations. Refer to unit
instructions for further electrical specifications.
CLEARANCE
All installations of the 6HK electric heater kits are approved for
zero-clearance to combustibles when the minimum speed tap
on the blower motor is set per the air handler installation
instruction or nameplate. See air handler installation instruc-
tions for more information on changing motor speed taps.
MODELS
NOMENCLATURE - ELECTRICAL
ELECTRICAL SHOCK HAZARD
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 edi-
tion.
The information contained in this manual is intended for use
by a qualified service technician familiar with safety proce-
dures and equipped with the proper tools and test instru-
ments.
Shut OFF electric power at unit disconnect and/or service
panel before beginning the following procedures.
Failure to carefully read and follow all instructions in this man-
ual can result in malfunction, property damage, personal
injury, and/or death.
Verify edges of foil faced insulation are not in contact with any
exposed electrical connections.
TABLE 1:
Models Covered
Heater kW
@ 240V
1 Phase
Heat Kit
1,2
1. (0,1) - 0 = no circuit breaker OR 1 = with circuit breaker.
2. (1,2) - 1 = with circuit breaker, no breaker jumper bar OR 2 = with circuit
breaker & breaker jumper bar.
3 Phase
Heat Kits
2.4
6HK(0,1)6500206
–
4.8
6HK(0,1)6500506
–
7.7
6HK(0,1)6500806
–
9.6
6HK(0,1)6501006
6HK06501025
12.5
6HK(1,2)6501306
–
14.4
6HK(1,2)6501506
6HK06501525
17.3
6HK(1,2)6501806
6HK06501825
19.2
6HK(1,2)6502006
6HK16502025
24.0
6HK(1,2)6502506
6HK16502525
6
Product Category
6 = Electric heat for AHR/AHE/AHV/RFCX*E/RFCX*P residential air handlers
HK
Family Identifier
HK = Electric Heater
1
Power Connection
0 = Terminal Block
1 = Circuit Breaker
2 = Circuit Breaker & Single Point wiring kit
65
Class Identifier
65 = Electric Heater
002
Electric Heat, Nom. kW
002=2.5kW; 005=5kW; 008=8kW; 010=10kW; 013=13kW;
013=13kW; 015=15kW; 018=18kW; 020=20kW; 025=25kW
25
Voltage Code
06 = 208/230-1-60
25 = 208/230-3-60
B
Style Letter
B = Indicates Sequential Change of Component Style
