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Stay Cool This Summer - 20% OFF Free Shipping 00d : 00h : 00m : 00s
Tekmar Smart Heat Pump Control Expansion 291EXP
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- Adds 4 heat pumpsAdds four output stages to the 291.
- Expands up to 16Use modules for heat pumps 5 through 16.
- 3-wire expansion busConnects to the 291 with -, +, and Gnd.
- Heat/cool outputsSupports compressor and heat/cool enable.
- Status LEDsVerify power, communication, and outputs.
Tekmar Smart Heat Pump Control Expansion 291EXP
Main Features
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Adds four heat pump stages
Each 291EXP adds four additional heat pump outputs to a Tekmar Smart Heat Pump Control 291 system.
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Selectable heat pump groups
DIP switches assign the module to heat pumps 5-8, 9-12, or 13-16 for larger staged systems.
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3-wire expansion connection
The module connects to the 291 through a polarity-sensitive -, +, and Gnd expansion bus up to 100 ft with 18 AWG cable.
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Heat and cool relay outputs
Supports compressor and reversing valve wiring, or separate heat and cool enable signals for compatible heat pumps.
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4-pipe diverting valve support
Provides one diverting valve output per heat pump to direct flow between hot and cold tanks in 4-pipe systems.
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Power and communication LEDs
Power, communication, heating, and cooling LEDs help verify operation and identify wiring issues during service.
Scale larger systems
Use 291EXP modules with the Smart Heat Pump Control 291 to expand from four onboard heat pumps up to 16 total heat pumps.
Installer-ready wiring
Clearly labeled terminals cover expansion communication, diverting valves, heat pump stages, and 115 V input power.
Commanded by the 291
All heat pump relays are normally off and respond to commands from the 291, with output status matching the 291 heat pump menu.
Faster troubleshooting
Power and communication LED states help verify supply voltage, expansion wiring, polarity, and communication with the main control.
Technical specifications
Manual-backed technical data for the Tekmar Smart Heat Pump Control Expansion 291EXP.
| Product family | Smart Heat Pump Control Expansion 291EXP |
|---|---|
| Application | Heat pump expansion module for Tekmar Smart Heat Pump Control 291 systems |
| Expansion capacity | Adds 4 heat pump stages per module |
| Supported groups | Heat pumps 5-8, 9-12, or 13-16 using DIP switch configuration |
| Dimensions and weight | 9 in H x 8 in W x 2 11/16 in D; 2.4 lb packaged weight |
| Electrical | 115 V(ac) +/-10%, 60 Hz, 6 W |
| Relays and calls | Staging relays 230 V(ac), 5 A, 1/10 hp; calls 24 V(ac) or short |
| Enclosure, approvals, warranty | Blue ABS plastic, NEMA type 1; CSA C US, FCC Part 15B, CAN ICES-3(B)/NMB-3(B); limited 3 year warranty |
Refer to the installation, operation, and maintenance manual for wiring, DIP switch setup, safety, troubleshooting, and warranty details.
Product documents
Installation, operation, maintenance, wiring, setup, troubleshooting, technical data, and warranty information for the Smart Heat Pump Control Expansion 291EXP.
Smart Heat Pump Control Expansion 291EXP Manual
Installation, operation, maintenance, wiring, DIP switch setup, troubleshooting, technical data, and warranty information.
Product details
Tekmar Smart Heat Pump Control Expansion 291EXP
Four-Heat-Pump Expansion Module
The Tekmar Smart Heat Pump Control Expansion 291EXP expands a Tekmar Smart Heat Pump Control 291 system by adding control for 4 additional heat pumps. Designed for larger hydronic heating and cooling systems, each 291EXP connects to the main 291 control through a wired expansion bus and can be configured for heat pump groups 5-8, 9-12, or 13-16.
Key Benefits
- System Expansion: Adds 4 additional heat pumps to a Tekmar Smart Heat Pump Control 291 system.
- Up to 16 Heat Pumps: Use multiple 291EXP modules to expand the full system up to 16 total heat pumps.
- Simple Expansion Bus: Connects to the main 291 control through a wired 3-conductor expansion connection.
- Configurable Heat Pump Groups: DIP switches assign the module to heat pumps 5-8, 9-12, or 13-16.
- Heating and Cooling Outputs: Supports compressor and reversing valve control, or separate heat and cool enable inputs.
- 4-Pipe Valve Support: Includes diverting valve outputs for directing flow to hot or cold buffer tanks in 4-pipe systems.
- Service-Friendly Status LEDs: Power, communication, heating, and cooling LEDs help verify operation and simplify troubleshooting.
Specifications
- Application: Heat pump expansion module for Tekmar Smart Heat Pump Control 291 systems
- Expansion Capacity: Adds 4 heat pump stages per module
- Supported Groups: Heat pumps 5-8, 9-12, or 13-16 using DIP switch configuration
- Expansion Connection: 3-wire connection to the Smart Heat Pump Control 291; maximum bus length 100 ft using 18 AWG solid conductor cable
- Dimensions: 9 in H x 8 in W x 2 11/16 in D
- Packaged Weight: 2.4 lb
- Power Supply: 115 V(ac) +/-10%, 60 Hz, 6 W
- Staging Relays: 230 V(ac), 5 A, 1/10 hp
- Calls: 24 V(ac) or short
- Enclosure: Blue ABS plastic, NEMA type 1
- Ambient Conditions: Indoor use only, 32°F to 122°F, less than 90% RH non-condensing
- Approvals: CSA C US, FCC Part 15B, CAN ICES-3(B)/NMB-3(B)
- Warranty: Limited 3 year
