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© 2008 Aqua-Hot
®
450-DE/DM Hydronic Heating System Installation Manual
0 in.
0 in.
1 in.
Open Access
Motorhome Bay
6 in. Minimum
Access Cover
Section 1: Aqua-Hot Installation
Installing the Mounting Tray and the Aqua-Hot:
1.
Reference the following illustrations for mounting
information:
•
Overall Aqua-Hot dimensions - Figure 10
• Mounting tray information - Figure 7
• I.D. Label noting the “Open Access”
clearance requirement for the front of the heater
- Figure 2
• Service access clearances - Figure 8
2.
Cut out the required mounting tray opening. Reference
Figure 7.
3.
Install the mounting tray flange into the cut-out open-
ing. Reference Figure 7.
NOTE:
Be sure to secure the mounting tray into place prior to
installing the Aqua-Hot.
Be sure to mount the Aqua-Hot securely into the
mounting tray to ensure that the unit does not move or
shift under normal operating conditions.
Be sure the access cover fastener is removed from the
Aqua-Hot prior to placement into the installed mount-
ing tray.
Be sure to provide an adequate support system for
the mounting tray; if adequate support is not present,
a cross-member will need to be installed. Reference
Figure 7.
Inspect the area beneath the mounting location to
insure no structural members will interfere with the
cut-out for the mounting tray.
4.
Insert a #10 machine screw into each of the embossed
holes in the mounting tray (total of six required) and
tighten to secure the mounting tray to the motorhome.
Reference Figure 7.
5.
Place the Aqua-Hot into the mounting tray. Reference
Figure 11.
6.
Install the combustion-air sleeve onto the diesel-burner’s
air intake. Reference Figure 9.
A) Slide the end of the combustion-air sleeve with the
clamp up through the mounting tray and underside
of the Aqua-Hot 450-D.
B) Loosen the adjustable clamp and slide over the
diesel-burner’s air intake.
C) Tighten the clamp to secure the sleeve to the
diesel-burner.
7.
Re-install the access cover fastener and tighten once the
total installation procedure is complete.
Figure 8
Figure 9
Combustion-Air
Sleeve
Summary of Contents for 450-DE Series
Page 1: ...Installation Manual 2008 Aqua Hot Heating Systems Inc...
Page 43: ...Appendix B Appendix B Wire Gauge Information...
Page 45: ...Appendix C Appendix C Electronic Controller Features...
Page 48: ...Appendix D Appendix D Antifreeze Types...
Page 50: ...Appendix E Appendix E Antifreeze Mixture Water Quality Recommendations...
Page 52: ...Appendix F Appendix F Antifreeze Terms and Mixture Ratio...
