Enertech EAV060 - On-Board Controls

Enertech Global 
EAV - EME/EMD Rev. A Models
Installaon and Operaons Manual

The OAT terminals in the EME/EMD indoor module are not used.
The out door sensor is installed and wired in the Outdoor Unit,
Sensor BT28.
Outdoor reset control will vary the design load temperature
based on outdoor temperature. The colder the outside
temperature, the warmer the load water/anfreeze soluon
temperature. This oers several advantages. The COP of the
system is improved by targeng the lowest outlet temperatures
possible. Addionally, user comfort is improved by maintaining
ideal temperatures for the current outdoor condions. If
necessary, the EAV can operate without outdoor reset by seng
a stac load water/anfreeze soluon temperature (see Secon
9).
 The outdoor temperature is a running one hour average
to avoid dramac shis.
The EAV ulizes a set of temperature curves as seen in Figure
21. The default curve is #3 and has been found to work in
many installaons. Depending on the load calculaon and
environmental requirements, a dierent curve may be
preferable: The higher numbered curves produce higher radiant
oor temperatures for a given outdoor temperature while
the lower numbered curves produce lower temperatures. For
example, at 30°F outdoor temperature, curve #3 will produce
79°F outlet temperature. Changing to curve #4 would produce
84°F outlet at that same condion.
1
2
3
4
5
6
7
8
9
10
11
1213
14
15
59
69
79
89
99
109
119
129
139
-30-1010305070
Supply Temeprature °F
Outdoor Temperature °F
Heang Curves
⚠⚠




 
Floors occupied in areas 85
Floors in perimeter areas 95
Floors in bathrooms 91
Floors in hallways, secondary
rooms
95


