Tekmar Smart Heat Pump Control 291

Advanced Hydronic Heat Pump System Control

The Tekmar Smart Heat Pump Control 291 is designed to manage advanced hydronic heat pump systems in 2-pipe or 4-pipe configurations. It operates up to four onboard heat pumps and can be expanded for larger residential, multifamily, and small commercial systems requiring heating, cooling, mixed temperatures, domestic hot water, or backup boiler integration.

Key Benefits

Flexible System Design: Supports 2-pipe and 4-pipe layouts, including simultaneous heating and cooling of buffer tanks in 4-pipe systems.
Expandable Heat Pump Control: Operates up to 4 heat pumps onboard and expands up to 16 heat pumps with Smart Heat Pump Expansion 291EXP modules.
Remote Access with Nexa: Ethernet and 2.4 GHz Wi-Fi connectivity allow remote monitoring, setting adjustments, and notifications through Nexa web and mobile apps.
Mixed Temperature Support: Add Smart Mix Expansion 295 modules to control up to 3 mixed-temperature loops using outdoor reset.
Backup Boiler Ready: Supports a single backup boiler or a dedicated boiler loop with the Tekmar Smart Boiler Control 294.
Installer-Friendly Interface: A 5-inch color touchscreen with setup wizard simplifies configuration, monitoring, and service access.
Smart System Protection: Includes heat pump staging, run-time rotation, service alerts, pump control, and temperature protection logic.

Specifications

Application: Hydronic heat pump control for 2-pipe and 4-pipe systems
Heat Pump Capacity: Controls 4 onboard heat pumps; expandable up to 16 heat pumps with 291EXP modules
Display: 5-inch color touchscreen
Dimensions: 9 in H x 8 in W x 2 11/16 in D
Power Supply: 115 V(ac) +/-10%, 60 Hz, 7 W
Pump Relays: 230 V(ac), 5 A, 1/3 hp
Staging Relays: 230 V(ac), 5 A, 1/10 hp
Modulating Outputs: 0-10 V(dc) or 4-20 mA
Communications: 10/100 Ethernet, Wi-Fi 802.11b/g/n, 2.4 GHz, WPA2 encryption
Included Sensors: 1 Outdoor Sensor 070 and 4 Universal Sensor 082
Enclosure: Blue ABS plastic, NEMA type 1
Approvals: CSA C US, FCC Part 15B, CAN ICES-3(B)/NMB-3(B)
Warranty: Limited 3 year