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TWH 70MBH Tankless Water Heater Mixing Panel with Zoning

Stk#: 
TWH070Z
Status: 
Active
Date Introduced: 
November 8, 2011

The TWH Tankless Water Heater Mixing Panel’s primary application is as a multizone mixing device for tankless DHW heaters.

A DHW priority option for these panels is not available.

Sequence of operation:

  • When a thermostat calls for heat, its internal 24V contacts close, the auxiliary terminals close, both pumps turn on, and its corresponding zone actuator opens.
  • As the pump moves fluid through the panel the thermostatic mixing valve adjusts the fluid temperature based on the user settings.
  • When the requirements of the thermostat are met, the internal contacts of the thermostat open, and the corresponding zone actuator closes. If no other thermostats are calling for heat, the auxiliary contacts open, and the pumps stop.
  • Both the primary and secondary pumps are activated, and all zone actuators open, once every 24 hours, for 15 minutes, to ensure that potable water in the piping is not stagnant.

California Proposition 65 WARNING

Thumbnail Stk# Title Publication Date Size Download
Instructions
L6TWH000Z TWH070Z, TWH070XPZ Panel Installation, Operation and Maintenance Manual (Instructions) 2016-09-13 10.26 MB Download
Submittal
SUBTWH000Z TWH - Tankless Water Heater Panels with Zoning Submittal 2012-02-16 532.18 KB Download
TWH Z Series
Description Mechanical Electrical Detail Electrical Rough-in
TWH Z Series Panel Schematic - Tankless Water Heater with High Flow Resistance, up to 4 Zone Radiant Heating
SCH-TWHZ-M004
Download:
PDF | Visio
SCH-TWHZ-E003
Download:
PDF | Visio
SCH-MRIB-R006
Download:
PDF | Visio
TWH Z Series Panel Schematic - Tankless Water Heater, up to 4 Zone Radiant Heating
SCH-TWHZ-M007
Download:
PDF | Visio
SCH-TWHZ-E001
Download:
PDF | Visio
SCH-MRIB-R006
Download:
PDF | Visio
TWH Z Series Panel Schematic - Tankless Water Heater, up to 4 Zone Radiant Heating, DHW Recirculation
SCH-TWHZ-M005
Download:
PDF | Visio
SCH-TWHZ-E004
Download:
PDF | Visio
SCH-MRIB-R006
Download:
PDF | Visio
TWH Z Series Panel Schematic - Boiler, up to 4 Zone Radiant Heating
SCH-TWHZ-M006
Download:
PDF | Visio
SCH-TWHZ-E005
Download:
PDF | Visio
SCH-MRIB-R006
Download:
PDF | Visio

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