Johnson Controls Heating System AHE User Manual

ACCESSORY KIT INSTALLATION MANUAL  
ELECTRIC HEATER ACCESSORY - 6HK SERIES  
FOR USE WITH THE FOLLOWING AIR HANDLER  
MODELS: AHR / AHE  
This instruction covers the physical installation of the following  
electric heaters with AHR/AHE18-60 single piece air handlers.  
Refer to unit instructions for electrical specifications.  
GENERAL INFORMATION  
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 installation  
instructions, or name plate list the possible combinations and  
other important electrical data and limitations.  
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.  
TABLE 1: Models Covered*  
6HK06500206  
6HK16502506  
6HK16500206  
6HK06501525  
6HK06500506  
6HK06501825  
6HK16500506  
6HK16501825  
6HK06500806  
6HK16502025  
6HK16500806  
6HK16502525  
6HK06501006  
6HK26501306  
6HK16501006  
6HK26501506  
6HK16501306  
6HK26501806  
6HK16501506  
6HK26502006  
6HK16501806  
6HK26502506  
6HK16502006  
Verify edges of foil faced insulation are not in contact with any  
exposed electrical connections.  
* Refer to Page 4 for nomenclature.  
3.  
REMOVE  
DUCT COVER  
4. SLIDE HEATER KIT INTO  
AIR HANDLER AND ATTACH  
WITH 4 DUCT COVER SCREWS  
5.  
FIELD SUPPLY WIRING  
THIS SIDE  
1.  
IF HEAT KIT TO BE INSTALLED  
HAS CIRCUIT BREAKERS,  
REMOVE CIRCUIT BREAKER  
KNOCKOUTS.  
BLOWER  
ACCESS PANEL  
2.  
FIGURE 1: Heater Installation  
Johnson Controls Unitary Products  
669997-UAI-D-1111  
 
669997-UAI-D-1111  
LOW VOLTAGE CONTROL CONNECTIONS  
The 24 volt power supply is provided by an internally wired low  
voltage transformer which is standard on all air handler models.  
Field supplied low voltage wiring can exit the unit on the top  
right hand corner or the right hand side panel. Refer to Figure 1.  
Remove desired knockout and pierce foil faced insulation to  
allow wiring to pass through. Use as small of a hole as possible  
to minimize air leakage. Install a 7/8” plastic bushing in the  
selected hole and keep low voltage wiring as short as possible  
inside the control box. To further minimize air leakage, seal the  
wiring entry point at the outside of the unit. The field wiring is to  
be connected at the screw terminals of the control board.  
NOTICE  
All wiring must comply with local and national electrical code  
requirements. Read and heed all unit caution labels.  
ELECTRIC HEAT  
WITHOUT CIRCUIT BREAKER  
3 PHASE (10 - 18 KW)  
1 PHASE ELECTRIC HEAT  
WITH CIRCUIT BREAKER  
AS SHIPPED FROM FACTORY  
SINGLE SOURCE  
TYPICAL WIRING WITHOUT ELECTRIC HEAT  
GND.  
LUG  
GND. LUG  
GND.  
LUG  
GND. LUG  
(2.5 - 25 KW) - 25 KW SHOWN  
POWER  
SUPPLY  
GND. LUG  
GND.  
LUG  
POWER  
SUPPLY  
1 PHASE ELECTRIC HEAT  
WITH CIRCUIT BREAKER  
& BREAKER BAR REMOVED  
TERMINAL  
BLOCK  
ELECTRIC HEAT  
WITHOUT CIRCUIT BREAKER  
SINGLE SOURCE (2.5 - 10 KW)  
MULTI-SOURCE (15 - 25 KW) - 25 KW SHOWN  
GND. LUG  
POWER  
SUPPLY  
GND.  
LUG  
GND.  
LUG  
GND. LUG  
(JUMPER BAR)  
POWER  
SUPPLY 1  
MAY BE 1, 2, OR 3  
CIRCUIT BREAKERS  
POWER  
SUPPLY 2  
POWER  
SUPPLY  
POWER  
SUPPLY 3  
POWER WIRING (208/230-1-60)  
TERMINAL  
BLOCK  
MAY BE 1, 2, OR 3  
CIRCUIT BREAKERS  
CONNECT TRANSFORMER LEADS WITH  
WIRE NUTS (TYPICAL ALL HEAT KITS)  
FIGURE 3: Line Power Connections for PSC Motors  
TYPICAL WIRING WITHOUT ELECTRIC HEAT  
ELECTRIC HEAT  
WITHOUT CIRCUIT BREAKER  
3 PHASE (10 - 18 KW)  
1 PHASE ELECTRIC HEAT  
WITH CIRCUIT BREAKER  
AS SHIPPED FROM FACTORY  
SINGLE SOURCE  
GND.  
LUG  
GND. LUG  
(2.5 - 25 KW) - 25 KW SHOWN  
GND.  
LUG  
GND. LUG  
POWER  
SUPPLY  
GND. LUG  
GND.  
LUG  
POWER  
SUPPLY  
1 PHASE ELECTRIC HEAT  
WITH CIRCUIT BREAKER  
TERMINAL  
BLOCK  
& BREAKER BAR REMOVED  
MULTI-SOURCE (15 - 25 KW) - 25 KW SHOWN  
ELECTRIC HEAT  
WITHOUT CIRCUIT BREAKER  
SINGLE SOURCE (2.5 - 10 KW)  
POWER  
SUPPLY  
GND. LUG  
GND.  
LUG  
(JUMPER BAR)  
GND.  
LUG  
GND. LUG  
MAY BE 1, 2, OR 3  
CIRCUIT BREAKERS  
POWER  
SUPPLY 1  
POWER  
SUPPLY 2  
POWER  
SUPPLY 3  
POWER  
SUPPLY  
TERMINAL  
BLOCK  
POWER WIRING (208/230-1-60)  
MAY BE 1, 2, OR 3  
CIRCUIT BREAKERS  
FIGURE 4: Line Power Connections for Standard ECM Motors  
Johnson Controls Unitary Products  
3
 
NOTICE  
For blower speed connections, electrical information and wir-  
ing diagrams, see indoor unit installation instructions.  
NOTICE  
The electric heaters have both auto resettable and one shot  
thermal limit controls. If failure occurs, this one shot thermal  
limit control must be replaced with a direct replacement.  
UPFLOW  
HEAT  
HORIZONTAL RIGHT  
HORIZONTAL LEFT  
FIGURE 5: Typical Installed Application  
NOMENCLATURE - ELECTRICAL  
2 = Electrical Accessory  
6 = 3rd Gen. Electrical Accessory  
HK = Heater Kit  
4 = 2nd Gen Electrical Accessory  
Product Cate-  
gory  
6
HK  
Family Identifier  
06 = Residential Air Handlers for Heat Pump & Air Conditioner  
16 = Electric Heater W / Breaker  
06  
5
Where Used  
26 = With Circuit Breaker and breaker jumper  
5 = Electric Heat  
005 = 5 KW  
7 = General  
Class Identifier  
008 = 8 KW  
010 = 10 KW  
013 = 13 KW  
018 = 18 KW  
025 = 25 KW  
25 = 208/230-3-60  
46 = 460-3-60  
Electric Heat, in  
KW  
005  
015 = 15 KW  
020 = 20 KW  
06 = 208 / 230-1-60  
24 = 240-1-60  
06  
Voltage Code  
Order Code  
BK = Bulk Pack (If Applicable)  
BK  
Subject to change without notice. Published in U.S.A.  
669997-UAI-D-1111  
Copyright © 2011 by Johnson Controls, Inc. All rights reserved.  
Supersedes: 669997-UAI-C-0611  
Johnson Controls Unitary Products  
5005 York Drive  
Norman, OK 73069  
 

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