16
CLCH-SVX08A-EN
Installation
Separated combustion can be a desirable option, but will require more field-installation time and
material. The burner fans are not sized to handle any static in the combustion air stream. A booster
fan will likely be required to overcome combustion air duct static.
Combustion air cannot be ducted directly to the combustion air fan. The airflow through the
vestibule is needed to keep the temperatures in the vestibule down.
Duct Transitions
When the gas heat section is the last section of the air handler, and duct transitions should be
smooth and uniform from all sides. Follow recommendations for duct transitions from SMACNA.
Fasten the ductwork directly to the ductwork opening. When using lined ductwork, the insulation
should not obstruct the discharge opening.
Airflow Direction
The airflow direction through the gas heater is important because it prevents localized “hot spots”
on the heat exchanger. Airflow direction labels denoting correct airflow direction through the gas
heat section are provided on the burner side of the heating section. See
Figure 5
.
Figure 5.
Airflow direction label
Summary of Contents for Gas Heat Sections for Performance Climate Changer Air Handlers
Page 23: ...CLCH SVX08A EN 23 Wiring Figure 13 200 1000 MBh 3 1 or 10 1 turndown wiring diagram ...
Page 24: ...24 CLCH SVX08A EN Wiring Figure 14 1250 2000 MBh 3 1 or 10 1 turndown wiring diagram ...
Page 25: ...CLCH SVX08A EN 25 Wiring Figure 15 1250 2400 MBh 20 1 turndown wiring diagram ...
Page 35: ...CLCH SVX08A EN 35 Notes ...
