York Sunline 2000 - Safety Controls; Heat Anticipator Setpoints

362242-YIM-B-0109
42 Johnson Controls Unitary Products
Once the jumpers are removed, the board then ter-
minates defrost when the DS opens or a maximum
of 10 minutes after the test pin jumper is removed,
whichever comes first.
SAFETY CONTROLS
The control circuit includes the following safety controls:
1. Temperature Limit Switch (TLS) - This control is
located inside the heater compartment and is set to
open at the temperature indicated in the Electric
Heat Limit Control Setting Table 29. It resets auto-
matically. The limit switch operates when a high
temperature condition, caused by inadequate sup-
ply air flow occurs, thus shutting down the heater
and energizing the blower.
HEAT ANTICIPATOR SETPOINTS
It is important that the anticipator setpoint be correct.
Too high of a setting will result in longer heat cycles
and a greater temperature swing in the conditioned
space. Reducing the value below the correct setpoint
will give shorter “ON” cycles and may result in the low-
ering of the temperature within the conditioned space.
Refer to 30 for the required electric heat anticipator set-
ting.
TABLE 29: ELECTRIC HEAT LIMIT CONTROL
SETTING
VOLTAGE kW TEMPERATURE LIMIT SWITCH
Open Temp
º
F
5 1 140
7 1,3 140
10 1,2,3 140
15 2,4,6 140
1,2,3,4,5 140
6 150
30 1,2,3,4,5,6 150
5 1,2,3 140
7 1,2,3 140
10 1,2,3 150
15 2,4,6 140
20 1,2,3,4,5,6 150
1,3,5 160
2,4,6 150
7 2,4,6 140
10 2,4,6 140
15 2,4,6 140
20 3 160
30 3 150
10 2,4,6 140
15 2,4,6 140
20 5 160
30 5 150
20
30
230-3-60
460-3-60
575-3-60
230-1-60
TABLE 30: ELECTRIC HEAT ANTICIPATOR
SETPOINTS
HEATER
KW
VOLTAGE
SETTING, AMPS
TH1 TH2
5
230-1-60
230-3-60
0.024 0.35
7 0.024 0.35
10 0.024 0.35
15 0.024 0.35
20 0.024 0.35
30 0.024 0.35
7
460-3-60
0.024 0.35
10 0.024 0.35
15 0.024 0.35
20 0.024 0.37
30 0.024 0.37
10
575-3-60
0.024 0.35
15 0.024 0.35
20 0.024 0.37
30 0.024 0.37