• © 2009 Rinnai America Corporation
29
Unmixed (HC) Circuit Parameters
• Some HC parameters are accessible but should never be adjusted. This is indicated with
N/A at the description. Ensure factory settings are always maintained at these parameters
• HC parameters that are available at the user level are indicated below
PARA
Description
Range / Explanation
Factory
Setting
User
Access
1
Type of reduced
(night time
setback)
operation
ECO
Economy-HC is off unless outdoor
freezing temperature is detected. The
heating system therefore will not
operate unless this freezing threshold
temperature is detected
RED
Yes
RED
Reduced-HC will operate on the night
time heating curve (recommended)
2
Do not use
1.00-10.00
Do not use
1.3
No