39
50
32
41
167
158
149
131
122
113
104
77
59
68
86
95
212
203
194
185
176
201˚
S
U
P
P
LY
O
U
T
LE
T
T
E
M
P
E
R
A
T
U
R
E
(F
)
-24
-59
-41
OUTSIDE TEMPERATURE (F)
-9
9
27
63
45
81
99
FUNCTION 9
FUNCTION 11
F
U
N
C
T
IO
N
8
F
U
N
C
T
IO
N
1
0
0
68˚
5˚
DEFAULT RESET CURVE
OUTDOOR RESET CURVE
Factory Default
NOTE:
It is important to note that the user can
adjust the heat curve down by adjusting the central
heating temperature to a lower setting.
Fig. 33: Outdoor Reset Curve — Factory Default
Fig. 34: Outdoor Reset Curve — Plot Your Curve
50
OUTSIDE TEMPERATURE (F)
-59
32
41
-41
-24
27
9
-9
0
81
45
63
99
Plot your Curve
OUTDOOR RESET CURVE
SU
P
P
LY
O
U
TL
ET
TE
M
P
ER
A
TU
R
E
(F
)
167
104
77
59
68
86
95
131
113
122
149
158
194
176
185
203
212
Installer Menu
The installer menu consists of several items that can
be adjusted. To access the installer menu, press and
hold the
ENTER/MENU
key for 5 seconds. Using the
UP
and
DOWN
, and
LEFT
and
RIGHT
arrow keys,
enter
925
, then press
ENTER/MENU
. Scroll through
the list of adjustable items by pressing the
LEFT
or
RIGHT
arrow keys. Once the desired item is dis-
played, press the
ENTER/MENU
key to select it. The
screen will begin to flash. Press the
DOWN
arrow key
to decrease the values, and the
UP
arrow key to
increase them. To store the changes, press the
ENTER/MENU
key. The display returns to normal
mode after one minute. Pressing the
ESC/RESET
key
before storing changes will restore the original value.
The central heating demand is detected when the
room thermostat closes. When an outside sensor is
also connected, the supply temperature will depend on
the factory default central heating curve which is suffi-
cient for most applications.
To set your own custom heat curve you will have to set
the following parameters. Use the graphs in Figs. 33
and 34 to assist you in the design of the curve.
1. Minimum outside design temperature:
Function 8
2. Design Supply water temperature at the minimum
design outside temperature:
Function 9
3. Maximum outside design temperature:
Function
10
4. Design Supply Water Temperature at the maxi-
mum outside temperature:
Function 11
Summary of Contents for H 300 Series
Page 40: ...40 WIRING DIAGRAM...
