Lennox SW 036, Руководство по установке

Страница: 29 / 32

Page 29
Controller is located on the right side of the controls hat
section above compressor(s). The controller sensor is
located in the water compartment.
FIGURE 30
S116 ANTIFREEZE CONTROLLER
SET
FIGURE 31
S116 CONTROLLER FUNCTION IN HEATING MODE
ON
OFF
ON
OFF
Stage 1 Electric Heat
S1
47°F (default OFF)
DIF1 5°F (default differential ON at 42°F)
Mode H1 (heating mode)*
Stage 2 Circulate Water
S2
42°F (default OFF)
DIF2 5°F (default differential ON at 37°F)
Mode H2 (heating mode)*
*Mode must be set to H1 or H2 (heating); serious unit dam­
age to unit may result if C1 or C2 (cooling) mode is applied.
Stage 1 Electric Heat
Stage 2 Circulate Water
S1 Stage 1 Setpoint
S2 Stage 2 Setpoint
Antifreeze / Water Mixture
Controller is factory-set for 100% water mixture. When an
antifreeze/water mixture is used, controller settings may
be adjusted. See table 18 for antifreeze/water mixture
freezing points. Antifreeze type and mixture will affect
capacity and pressure drop.
TABLE 18
ANTIFREEZE MIXTURE FREEZING TEMPERATURES
% By
Volume
0% 10% 20% 30% 40% 50%
Propylene
Glycol
32
°
F 26
°
F 18
°
F 7
°
F -8
°
F -29
°
F
Ethylene
Glycol
32
°
F 23
°
F 14
°
F 2
°
F -13
°
F -36
°
F
Methanol
32
°
F 20
°
F 0
°
F -15
°
F -40
°
F -65
°
F
Determining Setpoints
Set stage 1 to initiate a minimum of 10°F above the
antifreeze/water mixture freezing point. Set stage 2 to
initiate a minimum of 5°F above the antifreeze/water
mixture freezing point.
For example, the freezing point of a 10% mixture of
ethylene glycol and water is 23°F. Stage 1 initiation of
electric heat should be no less than 33°F (S1 - DIF1 or
38°F - 5°F = ON at 33°F). Stage 2 initiation of water
circulation should be no less than 28°F (S2 - DIF2 or 33°F
- 5°F = ON at 28°F).
Important - Setting the temperature too close to the
freezing temperature of the antifreeze/water mixture
could result in serious unit damage.
Adjusting Setpoints
Use the controller SET and UP/DOWN arrow keys to
adjust settings. See figure 30. The menus are sequential
in the following order:
Fahrenheit / Celsius
S1 (Stage 1 temperature)
DIF1 (Stage 1 differential)
H1 (Stage 1 htg./clg. mode)
S2 (Stage 2 temperature)
DIF2 (Stage 2 differential)
H1 (Stage 2 htg./clg. mode)
Use the UP/DOWN arrow keys to adjust the setting and
the SET key to save the change and advance to the next
selection. If no keys are pressed for 30 seconds the
switch will save any changes and return to the main
display screen.
1- Press the SET key once to access the Fahrenheit /
Celsius mode. F should be displayed. If not, use the
UP/DOWN arrow keys to toggle from C to F.
2- Press the SET key again to access Stage 1
Temperature. S1 will blink and the screen will display
the current temperature setting (47°F). Use the
UP/DOWN arrow keys to adjust the temperature.