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LENNOX EHA150 Electric Heat Kits Instruction Manual
Package 1 of 1 contains:
2- Electric heat assemblies*
1- Electric heat control module (used on KC/KH only)
1- TB2 terminal block
Electric heat pigtails (quantity varies by model)
1- Bag assembly containing:
Wiring diagram stickers (qty. 1, 2, 3, or 4) 20- Screws
1- Box assembly containing (used on KC/KH units
without hinges only):
2- Electric heat door frames
2- Electric heat doors
4- Door hinges
When replacing an existing electric heat assembly of the same size, it is not necessary to replace the rest of the parts found in this kit.
Inspect package upon receiving. If damage is found, contact last carrier immediately.
F4 Fuse Block
Fuse block assembly (F4) is furnished with the unit. The fuse block is required in single point power installations only.
TB2 in this kit replaces any factory-installed TB2. TB2 in this kit also replaces any factory-installed S48 or CB10 larger than 80amp.
Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and service must be performed by a licensed professional HVAC installer or equivalent, service agency, or the gas supplier
As with any mechanical equipment, contact with sharp sheet metal edges can result in personal injury. Take care while handling this equipment and wear gloves and protective clothing.
EHA150, 156, 240 & 360 electric heat sections are used as primary heaters for packaged cooling units and as a secondary heat source for packaged heat pump units. See table 2 for match-ups. Two electric heat assemblies are used in 156 through 360 units.
The EHA 60 Hz series heaters are CSA and ETL design certified. The EHA 50 Hz series heaters are CE compliant.
Installation of electric heaters must conform with standards of the National Fire Protection Association (NFPA) “Standard for Installation of Air Conditioning and Ventilation Systems NFPA No. 90A;” “Standard for the Installation of Residence Type Warm Air Heating and Air Conditioning Systems NFPA No. 90B;” in Canada, CSA C22.1 Canadian Electrical Code — Part I and all applicable CSA requirements; manufacturer’s installation instructions and local municipal building codes. Heaters are approved for clearances to combustible materials as listed on heater rating plate.
Accessibility and service clearances must take precedence over fire protection clearances. All wiring must conform with local building codes and the current
National Electric Code (NEC) ANSI-C1 and in Canada, CSA C22.1 Canadian Electrical Code —Part I and the applicable CSA requirements.
See table 1 to determine which diagram to use.
|LCH||Energence listed in title block. LCH units will be equipped with either an M2 or M3 Unit Controller. M2 or M3 will be printed on the bottom of the Unit Controller near the SBUS connector. On units equipped with an M2 Unit Controller, use the diagram which does NOT have A178 in the key list. On units equipped with an M3 Unit Controller, use the diagram which has A178 in the key list.|
|LCM||Has A178 in key list; no unit name or model number in title block.|
|KC/KH||DL2 & DL5|
|Packaged Units||Catalog No./ Part No.||Unit Voltage||Figure||Electric Heat||KW Output|
|156-300S (13-25 Ton)||22H66 / 604503-45||208/230||6||EHA240-7.5 and EHA240S-7.5|| |
|22H67 / 604503-46||460||6|
|22V35 / 604503-61||600||6|
|67W96 / 604503-33||380||6||EHA240-5.7 and EHA240S-5.7||11.5|
|156 (13 Ton)||22H68 / 604503-47||208/230||7||EHA156-15 and EHA156S-15||30|
|22H69 / 604503-48||460||6|
|22V36 / 604503-62||600||6|
|67W97 / 604503-34||380||6||EHA156-11.5 and EHA156S-11.5||23|
|180-360 (15-30 Ton)||22H70 / 604503-49||208/230||7||EHA360-15 and EHA360S-15||30|
|22H71 / 604503-50||460||6|
|22V37 / 604503-63||600||6|
|67W98 / 604503-35||380||6||EHA360-11.5 and EHA360S-11.5||23|
|LC 156 (13 Ton)||22H72 / 604503-51||208/230||8||EHA156-22.5 (2)||45|
|22H73 / 604503-52||460||8|
|22V38 / 604503-64||600||8|
|67W99 / 604503-36||380||8||EHA156-17.2 (2)||34.5|
|180-360 (15-30 Ton)||22H74 / 604503-53||208/230||8||EHA360-22.5 (2)|| |
|22H75 / 604503-54||460||8|
|22V39 / 604503-65||600||8|
|68W00 / 604503-37||380||8||EHA360-17.2 (2)||34.5|
|LC 156 (13 Ton)||22H76 / 604503-55||208/230||8|| |
|22H77 / 604503-56||460||8|
|22V40 / 604503-66||600||8|
|68W01 / 604503-38||380||8||EHA156-23 (2)||45.9|
|180-360 (15-30 Ton)||22H78 / 604503-57||208/230||8||EHA150-30 (2)||60|
|22H79 / 604503-58||460||8|
|22V41 / 604503-67||600||8|
|68W02 / 604503-39||380||8||EHA150-23 (2)||45.9|
|210-360 (17.5-30 Ton)||22H80 / 604503-59||208/230||8||EHA360-45 (2)||90|
|22H81 / 604503-60||460||8|
|22V42 / 604503-68||600||8|
|68W03 / 604503-40||380||8||EHA360-34.5 (2)||68.9|
|300-360 (25-30 Ton)||73W98 / 604503-41||208/230||8||EHA150-60 (2)|| |
|73W99 / 604503-42||460||8|
|74W00 / 604503-43||600||8|
|74W01 / 604503-44||380||8||EHA150-45.9 (2)||91.8|
(2) Two electric heat assemblies.
Wiring must conform to local codes and NEC/CEC. Refer closely to wiring diagram in this instruction and the following information: If electric heat assembly is being installed in an existing unit, a change in power supply wiring and disconnect switch or circuit breaker may be required. Remove the original supply wires or disconnect at power source. Refer to heater nameplate for minimum circuit ampacity and maximum fuse size.
KC/KH Units Control Wiring
Refer to figure 2.
Note – Install electric heat control module before making wire connections. See Installation section.
LC Units Control Wiring
Refer to figure 3 or 4.
KC/KH Units With Non-Hinged Access Doors Only
Set the Unit Controller using one of the following menus. M2, M3, or M4 is printed near the bottom of the Unit Controller by the SBUS connector on LCH units and near the seven-segment display on LCM units. Refer to the Unit Controller manual provided with each rooftop unit.
M2 Unit Controller
Use this menu to enable the appropriate number of electric heat stages.
SETTINGS > INSTALL > ELECTRIC HEAT STAGES
M3 Unit Controller
The Unit Controller configuration I.D. must be set to identify that electric heat has been installed.
Note – The number of electric heat stages do not have to be entered with version 08 and later.
M4 Unit Controller
Use the following menu in the mobile app to enable electric heat.
RTU MENU > SETUP > INSTALL
Select configuration I.D. 2 and change (9) Field Electric Heat to Y (Installed).
Single Stage (15 & 30 KW)
A W1 thermostat demand will energize the first stage of electric heat.
Two Stage (45, 60, 90 & 120 KW)
A W1 thermostat demand will energize the first stage of electric heat. A W2 thermostat demand will energize the second stage of electric heat after a 30 second delay.
Heat Pump Units:
A W1 thermostat demand will energize both compressors in heating mode (reversing valves are not energized). A W2 thermostat demand will energize the first stage of electric heat in addition to compressors operating in heat pump mode. For 45 through 90KW electric heat, the second stage of electric heat will be energized after a 30-second delay.
Set room thermostat for proper heat or auto operation if switching subbase is used. Apply power to unit and position heat setpoint lever above room temperature. Refer to unit installation instructions for additional information on start-up operations and adjustments.
|LENNOX EHA150 Electric Heat Kits [pdf] Instruction Manual|
EHA150, Electric Heat Kits, EHA150 Electric Heat Kits
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