York 048 & 060 Start-Upcooling, Electric Heat Limit Control Setting, Heat Anticipator Setpoints

177820-YIM-A-0506

TABLE 21: ELECTRIC HEAT LIMIT CONTROL SETTING

VOLTAGE	kW	TEMPERATURE LIMIT SWITCH	Open Temp ºF
	5	1	140
	7	1,3	140
	10	1,2,3	140
230-1-60
	15	2,4,6	140
	20	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
230-3-60
	15	2,4,6	140
	20	1,2,3,4,5,6	150
	30	1,3,5	160
		2,4,6	150
	7	2,4,6	140
	10	2,4,6	140
460-3-60
	15	2,4,6	140
	20	3	160
	30	3	150
	10	2,4,6	140
575-3-60	15	2,4,6	140
	20	5	160
	30	5	150

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 Table 22 for the required electric heat anticipa- tor setting.

TABLE 22: ELECTRIC HEAT ANTICIPATOR SETPOINTS

HEATER	VOLTAGE	SETTING, AMPS
KW		TH1	TH2
5		0.024	0.35
7		0.024	0.35
10	230-3-60	0.024	0.35
15		0.024	0.35
20		0.024	0.35
30		0.024	0.35
7		0.024	0.35
10		0.024	0.35
15	460-3-60	0.024	0.35
20		0.024	0.37
30		0.024	0.37
10		0.024	0.35
15	575-3-60	0.024	0.35
20		0.024	0.37
30		0.024	0.37

START-UP (COOLING)

PRESTART CHECK LIST

After installation has been completed:

1.Check the electrical supply voltage being supplied. Be sure that it is the same as listed on the unit nameplate.

2.Set the room thermostat to the off position.

3.Turn unit electrical power on.

4.Set the room thermostat fan switch to on.

5.Check indoor blower rotation.

•If blower rotation is in the wrong direction. Refer to Phasing Section in general informa- tion section.

•Check blower drive belt tension.

6.Check the unit supply air (CFM). See “CHECKING SUPPLY AIR CFM” on page 26.

Unitary Products Group 31