Low-Temperature Loop Application - Bosch Greensource CDi TW Series Installation, Operation And Maintenance Manual

Greensource CDi Series TW Model

Low-Temperature Loop Application

In applications where fluid temperatures may fall
below 40 F in a ground water or ground loop
°
applications using a unit equipped with a Unit
Mounted controller, the freeze stat will need to be
bypassed from the controls circuitry. To
accomplish this, follow instructions below:
1. Locate the connected High Pressure and
Freeze Stat wires labeled A and B, respectively.
(See Fig. 14).
Fig. 14 High Pressure (A) and Freeze Stat (B) Wires
Greensource CDi Series TW Model
2. Disconnect the yellow wire labeled A and black
wire labeled B. (See Fig. 15)
Fig. 15 Disconnect A and B
3. Locate the connected High Pressure and
Freeze Stat wires labeled D and C,
respectively. (See Fig. 16).
Fig. 16 High Pressure (D) and Freeze Stat (C) Wires
Subject to change without prior notice
Water-To-Water Unit Controller | 26
8733954853 (2020/04)