Nortek H3HK Series User manual

PACKAGE ELECTRIC HEATER KITS
Installation of H3HK Heater Kits (208 & 230V) in Packaged Air Conditioners & Packaged Heat Pumps.
H3HK SERIES
IMPORTANT
ATTENTION INSTALLERS:
These instructions are primarily intended to assist qualified and certified individuals experienced
in the proper installation of this appliance. Some local codes require licensed installation/
service personnel for this type equipment. All installations must be in accordance with these
instructions and with all applicable national and local codes and standards.
Read these instructions thoroughly before starting the installation. Return these instructions
to the customer's package for future reference.
DO NOT DESTROY. PLEASE READ CAREFULLY & KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
INSTALLATION INSTRUCTIONS

2
TABLE OF CONTENTS
IMPORTANT SAFETY INFORMATION .............................3
GENERAL INFORMATION.................................................3
Clearances to Combustibles .........................................3
ELECTRICAL SUPPLY.......................................................3
Circuit Options...............................................................3
Circuit Breakers ...........................................................4
Breaker Attachment.....................................................4
Attaching to Bracket ....................................................4
Breaker Removal .........................................................4
Single Circuit Kit ..........................................................4
Terminal Blocks..............................................................4
ELEMENT INSTALLATION ................................................4
Pre-Installation...............................................................4
Element Power Wiring....................................................4
Horizontal Supply & Return ...........................................5
Vertical Supply & Return................................................5
Vertical Installation of 8 & 10 kW Heater Kits ..............5
Installation of 15 & 20 kW Heater Kits .........................5
Staged Heat.................................................................5
AIRFLOW TEMP RISE .......................................................5
AIRFLOW SETTINGS .........................................................5
EXTERNAL STATIC PRESSURE DROP CHARTS............6
EQUIPMENT COMPONENTS............................................7
Figure 2. Location of Major Components......................7
Figure 3. Element Support Bracket...............................7
HEATER KIT CROSS REFERENCE TABLES ...................8
Table 5. (*)P94RD, Single Phase....................................8
Table 6. (*)Q94RD, Single Phase ...................................9
Table 7. (*)Q104SD, Single Phase ..................................10
ELECTRICAL DATA ...........................................................11
Table 8. (*)P94RD, Single Phase....................................11
Table 9. (*)Q94RD, Single Phase ...................................12
Table 10. (*)Q104SD, Single Phase ................................13
WIRING DIAGRAMS ..........................................................14
Figure 4. Single Phase, 5 kW, 1 Circuit .........................14
Figure 5. Single Phase, 8 kW & 10 kW, 1 Circuit ...........15
Figure 6. Single Phase, 15 kW, 2 Circuit .......................16
Figure 7. Single Phase, 20 kW, 2 Circuit........................17

3
IMPORTANT SAFETY INFORMATION
INSTALLER: Please read all instructions before servicing
this equipment. Pay attention to all safety warnings and
any other special NOTES highlighted in the manual.
Safety markings are used frequently throughout this
manual to designate a degree or level of seriousness and
should not be ignored. WARNING indicates a potentially
hazardous situation that if not avoided, could result in
personal injury or death. CAUTION indicates a potentially
hazardous situation that if not avoided, may result in minor
or moderate injury or property damage.
• This appliance is not intended for use by persons
(including children) with reduced physical, sensory
or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision
or instruction concerning use of the appliance by a
person responsible for their safety.
• Children should be supervised to ensure that they do
not play with the appliance.
WARNING:
ELECTRICAL SHOCK, FIRE OR
EXPLOSION HAZARD
Failure to follow safety warnings exactly
could result in serious injury, death or
property damage.
Improper servicing could result in dangerous
operation, serious injury, death or property
damage.
• Before servicing, disconnect all electrical
power to the unit.
• When servicing controls, label all wires
prior to disconnecting. Reconnect wires
correctly.
• Verify proper operation after servicing.
WARNING:
Unless noted otherwise in these instructions,
only factory authorized parts or accessory
kits may be used with this product.
Improper installation, service, adjustment,
or maintenance may cause explosion,
fire, electrical shock or other hazardous
conditions which may result in personal
injury or property damage.
• Use caution when removing components or handling
this product. Personal injury can occur from sharp
metal edges present in all sheet metal constructed
equipment.
ELECTRICAL SUPPLY
• If the unit was previously installed without electric heat,
the existing supply wiring may not be sufficient to handle
the increased load. See the unit rating label or
Table 8 (page 11), Table 9 (page 12) and Table 10 (page 13)
for minimum circuit ampacities and maximum overcurrent
protection ratings.
• Units with installed electric heat may be supplied by a single
circuit or by multiple circuits. Additional accessory kits
may be required if single circuit installation and/or circuit
breakers are desired. See Figure 1 for kit identification
and Table 1 for part numbers and accessory descriptions.
Circuit Options
The units with electric heat may be wired for single or
multiple circuits and may have circuit breakers or terminal
blocks. NOTE: Circuit breakers installed in the unit are
for short- circuit protection of the internal wiring and to
serve as a unit disconnect. The circuit breakers DO NOT
provide overcurrent protection of the supply wiring.
• Overcurrent protection must be provided at the branch
circuit distribution panel even if circuit breakers are not
used in the units. It must be sized as shown in
Table 8 (page 11), Table 9 (page 12) and Table 10
(page 13) or on the unit rating label and according to
the National Electric Code, Canadian Electrical Code
and applicable local codes. NOTE: In most cases the
overcurrent protection specified on the unit rating label
is less than the 60 amp rating of the circuit breakers
used in the units. This is because the function of the
overcurrent protection required at the distribution
panel (field supplied) and the unit mounted breakers
is different.
• When circuit breakers are used they must be used on
all circuits. Refer to Table 5 (page 8), Table 6 (page 9)
and Table 7 (page 10) for the correct circuit breaker for
the application.
• If the number of circuits listed in Table 5 (page 8),
Table 6 (page 9) and Table 7 (page 10) are more than
1, circuit breakers are required. If single circuit supply
wiring is desired: Use the 4-pole circuit adapter kit (P/N
GENERAL INFORMATION
H3HK heater kits are approved for use in packaged air
conditioners and packaged heat pumps when applied
and installed according to these instructions. See
Table 5 (page 8), Table 6 (page 9) and Table 7
(page 10) for approved H3HK air conditioner and heat
pump applications. Refer to the National Electric Code
(ANSI/NFPA 70) or in Canada the Canadian Electric
Code Part 1 (CSA C.22.1) and applicable local codes
for overcurrent protection and disconnect requirements.
Clearances to Combustibles
All units are approved for zero clearance to combustibles
when installed according to these instructions and other
instructions included with the unit and other approved
accessories. See Table 1, (page 4).

4
HEATER KITS DESCRIPTION PART
NUMBER
1 Phase
208/230v
H3HK005K-01D (5kW) 917166D
H3HK008K-01D (8kW) 917167D
H3HK010K-01D (10kW) 917168D
H3HK015K-01D (15kW) 917169D
H3HK015K-21D (15kW) 917172D
H3HK020K-21D (20kW) 917173D
Accessories
4-Pole Single Circuit
Adaptor* 913350
Circuit Breaker, 1 Phase
(2-Pole) 913554
* Single phase models only
Table 1. Heater Kits & Accessories
913350) when two 2-pole circuit breakers are used. If
3 circuit breakers are used, a field supplied U.L. Listed
6-pole single circuit adaptor can be used.
• If circuit breakers are not being used, proceed to the
Terminal Blocks section.
Circuit Breakers
If circuit breakers are used for any circuit, they must be
used for all circuits. Use one breaker for each circuit.
See Table 5 (page 8), Table 6 (page 9) and Table 7
(page 10).
Breaker Attachment
Install the circuit breaker mounting rail to the control
panel with the 4 blunt tip screws provided.
Attaching to Bracket
Attach the circuit breakers in the unit by hooking the
bottom in the base of the circuit breaker onto the left
rail of the bracket and rotating to the right. The circuit
breaker should snap into place. Install the breakers
so that the ON position is to the right. See Figure 2
(page 7) for component location.
Breaker Removal
Insert a screwdriver into the hole in the release tab and
pull out while rotating the breaker out and to the left. The
white release tab is located at the base of the breaker
under the line side (right) terminals.
H 3 HK 008 - K 0 1 D
Heater Revision
Heater Kit
3-Pkgd. Units Electric
Heater kW No. of Breakers
Electric Code
H=230-1-60 Stages
Sequencer
Figure 1. Heater Kit Identification Code
Single Circuit Kit
Refer to the instructions included with the single circuit
adapter kit for details on how to configure the adapter.
Install the adapter as shown in the instructions in the
line side (right) of the breakers. Proceed to the Element
Installation section.
Terminal Blocks
H3HK heater kits are shipped with a terminal block for small
package units. For large package units the kit terminal
block(s) will not be used. The electric heater kits will be
wired to the existing factory installed terminal block. If the
number of circuits indicated in Table 5 (page 8), Table 6
(page 9) and Table 7 (page 10) is 2 or 3, then the circuit
breakers must be used. See Circuit Options section.
ELEMENT INSTALLATION
The heater will not function properly if the elements
are installed incorrectly.
Pre-Installation
Remove the control box access panel. Locate the heater
plug assembly (9 pin for single phase kits) and remove the
jumper cap. Discard the jumper cap; it will not be used
after installing the heater kits. Remove the heater close-off
plate(s) in the electric heat panel. When installing single
banks of heaters, position them closest to the blower.
See Figure 2 (page 7).
Element Power Wiring
• Route the main power leads (heavy black & red wires)
and the 9 pin heat plug through the access hole at the
top of the control panel to the circuit breaker or terminal
block.
• Connect the 9 pin heat kit plug to the heat accessory
plug located in the control box. For connections, refer
to the detailed wiring diagrams: Figure 4 (page 14),
Figure 5 (page 15), Figure 6 (page 16) and Figure 7
(page 17). Make sure all connections are secure.
• Select large package units have additional terminal
blocks installed. The power leads from the heater kit
should be attached to these terminal blocks.
• Wires needed to connect from terminal blocks to
circuit breakers should be field supplied. The 6 inch
leads are provided with the heater kit to connect the
circuit breaker(s) to the compressor contactor. Mark
the appropriate box on the unit rating plate with an “X”
to indicate which heater kit has been installed. NOTE:
Torque the circuit breaker lugs to 45 in-lbs.

5
Horizontal Supply & Return
Install the heater kit with the limit control towards the
top of the unit when using side supply and return duct
openings.
Vertical Supply & Return
Vertical Installation of 8 & 10 kW Heater Kits
Install the heater kit with the limit towards the bottom
of the unit. When installing single bank(s) of heater(s),
position them closest to the blower.
Rooftop applications with vertical ducts must have an
elbow installed in the supply duct so that the elements
are not directly over a supply grille.
1.Remove the two screws on the heater kit unit holding
both heating element plates together if modifying the
location of the element to be closer to the blower.
2.Tilt the heating element plate forward to create clearance
of contactor wires. Move it to the other side of the
heating element bank and then back down, aligning
the edge holes of the heating element plates.
NOTE: This allows the unit to be turned around so that
both the element being closest to the blower and limit
being towards the bottom of the unit conditions are
satisfied. If the low voltage coil wires on the contactor
need to be removed mark each wire prior to removal
to ensure proper and easier reinstallation.
3.Using the two screws removed in step 1, fasten the
element close-off plates together.
Installation of 15 & 20 kW Heater Kits
The 15 & 20 kW heater kit includes a contactor bracket
that must be mounted on the blower transition panels
of the package equipment. Loosen the screw toward
the middle of the transition panel enough so that the
open slot on the bracket will slide into this screw. See
Figure 2 (page 7).
• If installing in a large package unit, the mounting screw
for the front of this bracket will be on the top side of
the blower transition panel closest to the supply duct
opening.
• If installing in a small package unit, the mounting screw
will be on the side of the blower transition. Remove this
screw to allow the contactor bracket to slide into the
back screw.
Reinstall the front screw and tighten the back screw firmly.
NOTE: Make sure the element support rod is inserted
into the support bracket. Fasten the heater with the
same screws used to secure the close-off plates. See
Figure 3 (page 7).
Staged Heat
To stage the heat on the 15 kW or 20 kW heater kits, the
factory set wiring will need to be modified. The orange
wire in Pin 2 on the heat accessory plug will be re-routed.
See the installation instructions supplied with the heat
pump or air conditioner for typical thermostat connections.
AIRFLOW - TEMP RISE
Use the following steps below to determine the heat rise
for your particular heater kit.
1.Determine your airflow in CFM or cubic meters per hour.
Find this data by locating your blower tap settings in
the data supplied with the installation instructions.
2.Locate your heater kits kW value and Btu/h in Table 2.
3.Input the values into the following equation:
TEMP RISE:∆T=(BTU/H)/(CFM*1.08)
AIRFLOW SETTINGS
NOTE: Generally the heat rise should be 30-40°F (16-
22°C). Anything above 40°F (22°C) should be avoided.
Heater Kit Blower Motor Tap Setting: To determine the
airflow motor tap setting needed for the heater kit, the
total external static pressure drop (See Table 4 (page 6))
in inches of water column must be measured. Review
the installation instructions blower curves to find a tap
setting to satisfy the minimum airflow requirements that is
the same or lower than the total external static pressure.
Adjust the blower motor tap setting by the instructions
in the unit installation instructions.
For example, the heater kit being installed is 10kw and
your measured static pressure is .5 in w.c. (1.24 kpa).
The minimum airflow for a 40°F (22°C) is 700 cfm (1189
cubic m3/hr) See Table 3.
Heater Kit = 10Kw
Min Airflow =700 cfm(1189 cubic m3/hr)
Total external static(measured) = .5 in w.c.( 1.24 kpa)
From the example blower tables, Tap 3 should be selected
for 781 cfm(1327 cubic m3/hr) @.5 in w.c. (1.24 kpa).
kW BTU/H
5 15,042
8 23,816
10 30,084
15 45,126
20 60,167
Table 2. kW & BTU/h Ratings
MINIMUM AIRFLOW FOR A 40°F (22°C) DEGREE
MAXIMUM TEMPERATURE RISE
Heater
Kit
Minimum Airflow
in cfm
Minimum Airflow in
m3/hr
5kw 350 595
8kw 550 934
10kw 700 1189
15kw 1045 1775
20kw 1390 2362
Table 3. Minimum Airflow

6
MODEL NUMBER EXTERNAL STATIC PRESSURE DROP - INCHES OF WATER COLUMN
P9 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Unit Blower
Setting CFM CFM CFM CFM CFM CFM CFM CFM
018K
Tap T1 468 455 423 388 325 270 208 147
Tap T2 789 760 716 647 578 526 463 417
Tap T3 969 947 899 852 781 715 660 597
Tap T4 1160 1128 1094 1049 1004 950 877 814
Tap T5 1292 1258 1216 1178 1124 1077 1077 963
Table 4. External Static Pressure Drop Charts
MODEL NUMBER EXTERNAL STATIC PRESSURE DROP - KPA
P9 0.025 0.05 0.075 0.1 0.125 0.149 0.174 0.199
Unit Blower
Setting m3/hr m3/hr m3/hr m3/hr m3/hr m3/hr m3/hr m3/hr
018K
Tap T1 795 773 719 659 552 459 353 250
Tap T2 1341 1291 1216 1099 982 894 787 708
Tap T3 1646 1609 1527 1448 1327 1215 1121 1014
Tap T4 1971 1916 1859 1782 1706 1614 1490 1383
Tap T5 2195 2137 2066 2001 1910 1830 1830 1636

7
Heating
Elements
Support
Brackets
Figure 2. Location of Major Components
Figure 3. Element Support Bracket
EQUIPMENT COMPONENTS
SMALL PACKAGED
LARGE PACKAGED

8
Heater Kit Cross References For Model (*)P94RD
MODEL TONNAGE
& PHASE
NOMINAL
KW
HEATER
KIT MODEL
HEATER KIT
PART NUMBER
BREAKERS
REQUIRED
(*)P94RD 1.5 Ton
Single Phase
5H3HK005K-01D 917166DNONE
8H3HK008K-01D 917167DNONE
10 H3HK010K-01D 917168DNONE
2 Ton
Single Phase
5H3HK005K-01D 917166DNONE
8H3HK008K-01D 917167DNONE
10 H3HK010K-01D 917168DNONE
2.5 Ton
Single Phase
5H3HK005K-01D 917166D NONE
8H3HK008K-01D 917167D NONE
10 H3HK010K-01D 917168D NONE
3 Ton
Single Phase
5H3HK005K-01D917166D NONE
8H3HK008K-01D917167D NONE
10 H3HK010K-01D917168D NONE
15 H3HK015K-01D917169D 2
3.5 Ton
Single Phase
5H3HK005K-01D917166D NONE
8H3HK008K-01D917167D NONE
10 H3HK010K-01D917168D NONE
15 H3HK015K-01D917169D 2
20 H3HK020K-21D917173D 2
4 Ton
Single Phase
5H3HK005K-01D917166D NONE
8H3HK008K-01D917167D NONE
10 H3HK010K-01D917168D NONE
15 H3HK015K-01D917169D 2
20 H3HK020K-21D917173D 2
5 Ton
Single Phase
5H3HK005K-01D917166D NONE
8H3HK008K-01D917167D NONE
10 H3HK010K-01D917168D NONE
15 H3HK015K-01D917169D 2
20 H3HK020K-21D917173D 2
(*)P94RD
(*)P94RD
(*)P94RD
(*)P94RD
(*)P94RD
(*)P94RD
HEATER KIT CROSS REFERENCE TABLES
Table 5. (*)P94RD, Single Phase

9
Heater Kit Cross Reference For Model (*)Q94RD
MODEL TONNAGE
& PHASE
NOMINAL
kW
HEATER
KIT MODEL
HEATER KIT
PART NUMBER
BREAKERS
REQUIRED
(*)Q94RD-024K 2 Ton Single Phase
5 H3HK005K-01D 917166D None
8 H3HK008K-01D 917167D None
10 H3HK010K-01D 917168D 2
(*)Q94RD-030K 2.5 Ton Single Phase
5 H3HK005K-01D 917166D None
8 H3HK008K-01D 917167D None
10 H3HK010K-01D 917168D 2
(*)Q94RD-036K 3 Ton Single Phase
5 H3HK005K-01D 917166D None
8 H3HK008K-01D 917167D 2
10 H3HK010K-01D 917168D 2
(*)Q94RD-042K 3.5 Ton Single Phase
5 H3HK005K-01D 917166D None
8 H3HK008K-01D 917167D 2
10 H3HK010K-01D 917168D 2
15 H3HK015K-01D 917169D 2
20 H3HK020K-21D 917173D 3
(*)Q94RD-048K 4 Ton Single Phase
5 H3HK005K-01D 917166D 2
8 H3HK008K-01D 917167D 2
10 H3HK010K-01D 917168D 2
15 H3HK015K-21D 917172D 3
20 H3HK020K-21D 917173D 3
(*)Q94RD-060K 5 Ton Single Phase
5 H3HK005K-01D 917166D 2
8 H3HK008K-01D 917167D 2
10 H3HK010K-01D 917168D 2
15 H3HK015K-21D 917172D 3
20 H3HK020K-21D 917173D 3
HEATER KIT CROSS REFERENCE TABLES continued
Table 6. (*)Q94RD, Single Phase

10
Heater Kit Cross Reference For Model (*)Q104SD
MODEL TONNAGE
& PHASE
NOMINAL
kW
HEATER
KIT MODEL
HEATER KIT
PART NUMBER
BREAKERS
REQUIRED FIGURE
(*)Q104SD 2 Ton
Single Phase
5 H3HK005K-01D 917166D None _
8 H3HK008K-01D 917167D None 7
10 H3HK010K-01D 917168D 2 7
(*)Q104SD 2.5 Ton
Single Phase
5 H3HK005K-01D 917166D None _
8 H3HK008K-01D 917167D 2 7
10 H3HK010K-01D 917168D 2 7
(*)Q104SD 3 Ton
Single Phase
5 H3HK005K-01D 917166D None _
8 H3HK008K-01D 917167D 2 7
10 H3HK010K-01D 917168D 2 7
(*)Q104SD 3.5 Ton
Single Phase
5 H3HK005K-01D 917166D None 5
8 H3HK008K-01D 917167D 2 7
10 H3HK010K-01D 917168D 2 7
15 H3HK015K-21D 917172D 3 10
20 H3HK020K-21D 917173D 3 12
(*)Q104SD 4 Ton
Single Phase
5 H3HK005K-01D 917166D 2 5
8 H3HK008K-01D 917167D 2 7
10 H3HK010K-01D 917168D 2 7
15 H3HK015K-21D 917172D 3 10
20 H3HK020K-21D 917173D 3 12
(*)Q104SD 5 Ton
Single Phase
5 H3HK005K-01D 917166D 2 5
8 H3HK008K-01D 917167D 2 7
10 H3HK010K-01D 917168D 2 7
15 H3HK015K-21D 917172D 3 10
20 H3HK020K-21D 917173D 3 12
HEATER KIT CROSS REFERENCE TABLES continued
Table 7. (*)Q104SD, Single Phase

11
ELECTRICAL DATA
Model (*)P94RD, SINGLE PHASE, 208/230V
Model
Number
Heater
kW
Single
Circuit
Multiple Supply Circuit Option
Circuit A
(Compressor,
Blower, & Fan)
Circuit B
(Heater Only)
Circuit C
(Heater Only)
MCA MOP MCA MOP MCA MOP MCA MOP
(*)P94RD-024K
0 16.3 25 — — — — — —
5 28.7 30 — — — — — —
8 42.7 45 — — — — — —
10 52.7 60 — — — — — —
(*)P94RD-030K
0 18.7 25 — — — — — —
5 28.7 30 — — — — — —
8 42.7 45 — — — — — —
10 52.7 60 — — — — — —
(*)P94RD-036K
0 25.5 40 — — — — — —
5 28.7 40 — — — — — —
8 42.7 45 — — — — — —
10 52.7 60 — — — — — —
(*)P94RD-042K
0 30.1 45 — — — — — —
5 30.7 45 — — — — — —
8 44.7 45 — — — — — —
10 54.7 60 — — — — — —
15 78.6 90 54.7 60 24 25 — —
20 102.6 110 54.7 60 47.9 50 — —
(*)P94RD-048K
0 38.2 60 — — — — — —
5 38.2 60 — — — — — —
8 44.7 60 — — — — — —
10 54.7 60 38.2 60 47.7 50 — —
15 78.6 90 54.7 60 24 25 — —
20 102.6 110 54.7 60 47.9 50 — —
(*)P94RD-060K
0 41.4 60 — — — — — —
5 41.4 60 — — — — — —
8 46.7 60 41.4 60 37.9 40 — —
10 56.7 60 41.4 60 47.9 50 — —
15 80.6 90 56.7 60 24 25 — —
20 104.6 110 56.7 60 47.9 50 — —
Table 8. (*)P94RD, Single Phase

12
ELECTRICAL DATA continued
Model (*)Q94RD, SINGLE PHASE, 208/230V
Model
Number
Heater
kW
Single
Circuit
Multiple Supply Circuit Option
Circuit A
(Compressor,
Blower, & Fan)
Circuit B
(Heater Only)
Circuit C
(Heater Only)
MCA MOP MCA MOP MCA MOP MCA MOP
(*)Q94RD-024K
0 16.1 25 — — — — — —
5 40.1 45 — — — — — —
8 54.1 60 — — — — — —
10 64.1 70 16.1 25 47.9 50 — —
(*)Q94RD-030K
0 18.7 25 — — — — — —
5 42.7 45 — — — — — —
8 56.6 60 18.7 25 37.9 40 — —
10 66.6 70 18.7 25 47.9 50 — —
(*)Q94RD-036K
0 24.6 40 — — — — — —
5 48.6 50 — — — — — —
8 62.6 70 24.6 40 37.9 40 — —
10 72.5 80 24.6 40 47.9 50 — —
(*)Q94RD-042K
0 29.3 45 — — — — — —
5 53.3 60 — — — — — —
8 67.3 70 29.3 45 37.9 40 — —
10 77.3 80 29.3 45 47.9 50 — —
15 101.2 110 53.3 60 47.9 50 — —
20 125.2 150 29.3 45 47.9 50 47.9 50
(*)Q94RD-048K
0 31.3 50 — — — — — —
5 55.3 70 31.3 50 24 25 — —
8 69.3 80 31.3 50 37.9 40 — —
10 79.3 80 31.3 50 47.9 50 — —
15 103.2 110 31.3 50 24.0 25 47.9 50
20 127.2 150 31.3 50 47.9 50 47.9 50
(*)Q94RD-060K
0 44.5 70 — — — — — —
5 68.4 90 44.5 70 24 25 — —
8 82.4 100 44.5 70 37.9 40 — —
10 92.4 100 44.5 70 47.9 50 — —
15 116.3 125 44.5 70 24 25 47.9 50
20 140.3 150 44.5 70 47.9 50 47.9 50
Table 9. (*)Q94RD, Single Phase

13
ELECTRICAL DATA continued
Table 10. (*)Q104SD, Single Phase
Model (*)Q104SD, SINGLE PHASE, 208/230V
Model
Number
Heater
kW
Single
Circuit
Multiple Supply Circuit Option
Circuit A
(Compressor,
Blower, & Fan)
Circuit B
(Heater Only)
Circuit C
(Heater Only)
MCA MOP MCA MOP MCA MOP MCA MOP
(*)Q104SD-X24K
0 19.2 30 — — — — — —
5 43.2 45 19.2 30 24 25 — —
8 57.2 60 19.2 30 37.9 40 — —
10 67.1 70 19.2 30 47.9 50 — —
(*)Q104SD-X30K
0 22.4 35 — — — — — —
5 46.4 50 22.4 35 24 25 — —
8 60.4 70 22.4 35 37.9 40 — —
10 70.3 80 22.4 35 47.9 50 — —
(*)Q104SD-X36K
0 27.4 45 — — — — — —
5 51.3 60 27.4 45 24 25 — —
8 65.3 70 27.4 45 37.9 40 — —
10 75.3 80 27.4 45 47.9 50 — —
(*)Q104SD-X42K
0 30.1 45 — — — — — —
5 54.1 60 30.1 45 24 25 — —
8 68 80 30.1 45 37.9 40 — —
10 78 80 30.1 45 47.9 50 — —
15 102 110 30.1 45 71.9 80 — —
15(3cir) 102 110 30.1 45 47.9 50 24 25
20(3cir) 125.9 150 30.1 45 47.9 50 47.9 50
(*)Q104SD-X48K
0 34.1 50 — — — — — —
5 58.1 70 34.1 50 24 25 — —
8 72 80 34.1 50 37.9 40 — —
10 82 90 34.1 50 47.9 50 — —
15 106 110 34.1 50 71.9 80 — —
15(3cir) 106 110 34.1 50 47.9 50 24 25
20(3cir) 129.9 150 34.1 50 47.9 50 47.9 50
(*)Q104SD-X60K
0 38.9 60 — — — — — —
5 62.9 80 38.9 60 24 25 — —
8 76.8 90 38.9 60 37.9 40 — —
10 86.8 100 38.9 60 47.9 50 — —
15 110.8 125 38.9 60 71.9 80 — —
15(3cir) 110.8 125 38.9 60 47.9 50 24 25
20(3cir) 134.7 150 38.9 60 47.9 50 47.9 50

14
2 3 4 5 6 7 1 8 9
CONTACTOR
BROWN
BLUE
GREY
MAIN AIR
LIMIT
ELEMENT
YELLOW
9-PIN
HEATER PLUG
WHITE
BACKUP
LIMIT
TERMINAL BLOCK
T2 T1
L2 L1
COMPRESSOR CONTACTOR
CIRCUIT BREAKER
CIRCUIT A
SUPPLY VOLTAGE
L1
L2
RED
BLACK
RED
REDBLACK RED
208/230VAC 1Ph 60 Hz 5 kW, 1-Circuit, 1-Phase Electric Heater Kit
10456350
(New)
05/23
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
WIRING DIAGRAM
H3HK005K-01D
NOTES: 1. Circuit breakers are not wired to heater kit by the factory, see Installation Instructions for wiring procedure. 2. If any of the original wire supplied with this unit must be replaced, it must be replaced with wiring material of the same gauge size and temperature rating. The installation of this heater kit may require a change in the blower speed tap connection. See Installation Instructions for details. 3. Use copper conductors with a minimum temperature rating of 60 C for supply connections.
Figure 4. Single Phase, 5kW, 1 Circuit
WIRING DIAGRAMS

15
Figure 5. Single Phase, 8 kW & 10 kW, 1 Circuit
2 3 4 5 6 7
1
8 9
CONTACTOR
BACKUP LIMIT
MAIN AIR LIMIT
ELEMENT
CONTACTOR
9-PIN
HEATER PLUG
BROWN
YELLOW
BLUE
WHITE
GREY
TERMINAL BLOCK
T2 T1
L2 L1
COMPRESSOR CONTACTOR
CIRCUIT BREAKER
CIRCUIT A
SUPPLY VOLTAGE
L1
L2
RED
BLACK
BROWN
REDBLACK
BLACK
BLACK
GREY
RED
RED
RED
RED RED
RED
10456360
(New)
05/23
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
WIRING DIAGRAM
NOTES: 1. Circuit breakers are not wired to heater kit by the factory, see Installation Instructions for wiring procedure. 2. If any of the original wire supplied with this unit must be replaced, it must be replaced with wiring material of the same gauge size and temperature rating. The installation of this heater kit may require a change in the blower speed tap connection. See Installation Instructions for details. 3. Use copper conductors with a minimum temperature rating of 60 C for supply connections.
8 KW, 10 KW, 1-Circuit, 1-Phase Electric Heater Kit
H3HK008K-01D H3HK010K-01D
208/230VAC 1Ph 60Hz

16
Figure 6. Single Phase, 15 kW, 2 Circuit
2 3 4 5 6 7
1
8 9
BACKUP LIMIT
MAIN AIR LIMIT
ELEMENT
CONTACTOR CONTACTOR
CONTACTOR
MAIN AIR LIMIT
9-PIN
HEATER PLUG
WHITE
BROWN
ORANGE
YELLOW
BLUE
GREY
ELEMENT
BACKUP LIMIT
CIRCUIT BREAKERS
CIRCUIT C
CIRCUIT B
T2 T1
L2 L1
COMPRESSOR CONTACTOR
TERMINAL BLOCK
SUPPLY VOLTAGE
L1
L2
SUPPLY VOLTAGE
L1
L2
RED
BLACK
REDBLACK
BLACK
RED
RED
BLACK
GREY
BLACK
RED
RED
BROWN
RED
RED
GREY
RED
RED
RED
RED
BLACK
10456370
(New)
05/23
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
WIRING DIAGRAM
NOTES:
1. Circuit breakers are not wired to heater kit by the factory, see Installation Instructions for wiring procedure. 2. If any of the original wire supplied with this unit must be replaced, it must be replaced with wiring material of the same gauge size and temperature rating. The installation of this heater kit may require a change in the blower speed tap connection. See Installation Instructions for details. 3. Use copper conductors with a minimum temperature rating of 60 C for supply connections.
15 kW, 2-Circuit, AC, 1-Phase Electric Heater KitH3HK015K-01D
H3HK015K-21D
208/230VAC 1Ph 60Hz

17
Figure 7. Single Phase, 20 kW, 2 Circuit
2 3 4 5 6 7
1
8 9
9-PIN
HEATER
PLUG
ELEMENT
CONTACTOR
CONTACTOR
CONTACTOR CONTACTOR
WHITE
BROWN
ORANGE
YELLOW
BLUE
GREY ELEMENT
MAIN AIR LIMIT
BACKUP LIMIT
BACKUP LIMIT
MAIN AIR LIMIT
CIRCUIT BREAKERS
CIRCUIT B
CIRCUIT A SUPPLY VOLTAGE
L1
L2
SUPPLY VOLTAGE
L1
L2
COMPRESSOR CONTACTOR
TERMINAL BLOCK
T2 T1
L2 L1
RED
RED
RED
RED
BLACK
YELLOW
BLACK
GREY
BLACK
RED
RED
BLACK
GREY
BLACK
BROWN
GREY
RED
RED
BLACK BLACK
RED
RED
RED
BLACK
RED
RED
RED
RED
RED
10456380
(New)
05/23
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
WIRING DIAGRAM
20 kW, 2-Circuit, 1-Phase Electric Heater KitH3HK020K-01D
H3HK020K-21D
208/230VAC 1Ph 60Hz
NOTES: 1. Circuit breakers are not wired to heater kit by the factory, see Installation Instructions for wiring procedure. 2. If any of the original wire supplied with this unit must be replaced, it must be replaced with wiring material of the same gauge size and temperature rating. The installation of this heater kit may require a change in the blower speed tap connection. See Installation Instructions for details. 3. Use copper conductors with a minimum temperature rating of 60 C for supply connections.

18

19

INSTALLER: PLEASE LEAVE THESE INSTALLATION INSTRUCTIONS WITH THE HOMEOWNER
10457690
(Replaces 10439260)
Specifications & illustrations subject to change without notice or incurring obligations (08/23).
O’Fallon, MO, © Nortek Global HVAC LLC 2023. All Rights Reserved.