Model PSD-358, Primary/Secondary/Domestic Module Zoom

Model PSD-358, Primary/Secondary/Domestic Module


PSD-358 is no longer available at no longer carries this brand. We apologize for the inconvenience.


Application: Heating
Width (Inches): 40"
Height (Inches): 32
Depth (Inches): 9-1/2"

Description for PSD-358

This module is designed to simplify installation for a space heating and domestic hot water heating application. Componets include: (1) Grundfos 1558 3-Speed pump on the primary boiler loop, (1) Grundfos 1558 3-Speed pump on the secondary heating loop and (1) Grundfos 1558 3-Speed pump on the domestic hot water starage tank loop. This module can be built with (3) Grundfos 1558 3-Speed circulator models (PSD-358) or Taco 00Rs (PSD-30R). We also include the make-up water supply componets which are standard with all of our modules. (1) Taco fast fill valve, (1) Honeywell air seperator and (1) Watts backflow preventer.


  • 2 connection to the boiler
  • 2 connections to the heating application (such as radiant floors, baseboards, radiators, fan convectors etc.)
  • 2 connections to indirect hot water storage tank (not included)
  • 1 connection for the closed loop water system supply
  • Add a properly sized expansion tank for your system to complete installation (not included).

PLEASE NOTE: The product weighs 63 lbs. and may require the use of a
lift gate.
If you do require a lift gate at your delivery, you'll have the option to add this FREE of charge when you checkout.

Model PSD-358, Primary/Secondary/Domestic Module

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