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© 2008 Aqua-Hot
®
375-D Hydronic Heating System Installation Manual Rev. A
section 2: aqua-Hot Installation
Installing the Cable-Clamp Fittings:
1.
Determine the port side best suited for the current ap-
plication. Reference Figure 9.
2.
Remove the terminal block access cover and set aside
in a location where it will not become damaged or
scratched.
3.
For each cable-clamp fitting, remove the nut from the
fitting, insert the fitting into the port with the wire-
entry side facing away from the terminal block access
area, screw the nut onto the fitting, and hand-tighten.
Reference Figure 9.
Installing the Wires into the Terminal Blocks:
NOTE:
It is recommended that the wire numbers in Appendix
A be used when installing the Aqua-Hot in order to
assist with differentiating between the separate heating
zones and to aid service personnel with troubleshoot-
ing.
1.
Loosen the cable clamps on the installed cable-clamp
fittings. Reference Figure 10.
2.
Insert the wires into the terminal block access area
through the appropriate port’s cable clamp fitting and
into the proper terminal. Reference Figure 10.
3.
Secure the wires into their terminals by tightening the
corresponding screw on the terminal block.
4.
Hand tighten the cable clamps on each of the cable-
clamp fittings.
5.
Re-install the terminal block access cover and tighten
the screws securing the cover to the Aqua-Hot.
Figure 10
120 Volt-aC
terminal Block
12 Volt-DC
terminal Block
Cable-Clamp Fittings
(optional placement)
terminal Block
for switches,
Heat Exchanger
Fans, and
thermostats
Cable-clamp
fittings can be
installed on either
side of the termi-
nal block access
area
Figure 9
Summary of Contents for 375D
Page 1: ...2008 Aqua Hot Heating Systems Inc Installation Manual...
Page 38: ...Wiring Diagram Appendix A...
Page 40: ...Wire Gauge Information Appendix B...
Page 42: ...Antifreeze Types Appendix C...
Page 44: ...Antifreeze Mixture Water Quality Recommendations Appendix D...
Page 46: ...Antifreeze Terms and Mixture Ratio Appendix E...