170761-UIM-B-0406
18
Unitary Products Group
SECTION IX: INSTRUCTING THE OWNER
Assist owner with processing warranty cards and/or online registration.
Review Owners Guide and provide a copy to the owner and guidance
on proper operation and maintenance. Instruct the owner or the opera-
tor how to start, stop and adjust temperature setting.
When applicable, instruct the owner that the compressor is equipped
with a crankcase heater to prevent the migration of refrigerant to the
compressor during the “OFF” cycle. The heater is energized only when
the unit is not running. If the main switch is disconnected for long peri-
ods of shut down, do not attempt to start the unit until 8 hours after the
switch has been connected. This will allow sufficient time for all liquid
refrigerant to be driven out of the compressor.
The installer should also instruct the owner on proper operation and
maintenance of all other system components.
MAINTENANCE
1.
Dirt should not be allowed to accumulate on the outdoor coils or
other parts in the air circuit. Clean as often as necessary to keep
the unit clean. Use a brush, vacuum cleaner attachment, or other
suitable means.
2.
The outdoor fan motor is permanently lubricated and does not
require periodic oiling.
3.
If the coil needs to be cleaned, it should be washed with Calgon
Coilclean (mix one part Coilclean to seven parts water). Allow
solution to remain on coil for 30 minutes before rinsing with clean
water. Solution should not be permitted to come in contact with
painted surfaces.
4.
Refer to the furnace or air handler instructions for filter and blower
motor maintenance.
5.
The indoor coil and drain pan should be inspected and cleaned
regularly to prevent odors and assure proper drainage.
IT IS UNLAWFUL TO KNOWINGLY VENT, RELEASE OR DIS-
CHARGE REFRIGERANT INTO THE OPEN AIR DURING
REPAIR, SERVICE, MAINTENANCE OR THE FINAL DIS-
POSAL OF THIS UNIT.
WHEN THE SYSTEM IS FUNCTIONING PROPERLY AND
THE OWNER HAS BEEN FULLY INSTRUCTED, SECURE
THE OWNER’S APPROVAL.
TABLE 12: 1-1/2 Ton Subcooling Charging Chart
Outdoor
Ambient
Indoor Wet Bulb (°F)
57
62
67
72
DB (°F)
Liquid Pressure (psig) at Base Valve
65
132 (8)
133 (8)
135 (8)
137 (9)
70
146 (9)
147 (9)
149 (9)
152 (10)
75
160 (10)
161 (10)
164 (10)
166 (10)
80
174 (10)
175 (10)
178 (10)
180 (11)
85
188 (10)
189 (10)
192 (10)
194 (11)
90
202 (10)
203 (10)
206 (10)
208 (11)
95
217 (9)
217 (10)
220 (10)
223 (10)
100
234 (10)
235 (10)
238 (10)
241 (11)
105
252 (10)
253 (10)
256 (11)
259 (11)
110
270 (11)
271 (11)
274 (11)
277 (11)
115
288 (10)
289 (10)
292 (11)
295 (11)
120
305 (10)
307 (10)
310 (10)
313 (10)
125
323 (10)
325 (9)
328 (10)
331 (10)
TABLE 13: 2 Ton Subcooling Charging Chart
Outdoor
Ambient
Indoor Wet Bulb (°F)
57
62
67
72
DB (°F)
Liquid Pressure (psig) at Base Valve
65
143 (7)
144 (8)
146 (7)
149 (8)
70
158 (8)
159 (9)
161 (9)
165 (9)
75
173 (9)
174 (10)
176 (10)
180 (10)
80
187 (10)
190 (10)
191 (10)
195 (10)
85
202 (10)
205 (10)
206 (11)
210 (11)
90
217 (10)
220 (10)
221 (11)
226 (11)
95
232 (9)
235 (10)
237 (10)
241 (10)
100
252 (10)
254 (11)
256 (11)
260 (11)
105
271 (11)
273 (11)
275 (11)
279 (11)
110
291 (11)
292 (11)
294 (11)
298 (11)
115
310 (11)
312 (11)
313 (11)
318 (11)
120
330 (11)
331 (10)
332 (11)
337 (11)
125
349 (10)
350 (10)
351 (10)
356 (11)
TABLE 14: 2-1/2 Ton Subcooling Charging Chart
Outdoor
Ambient
Indoor Wet Bulb (°F)
57
62
67
72
DB (°F)
Liquid Pressure (psig) at Base Valve
65
133 (9)
134 (9)
135 (9)
135 (9)
70
147 (10)
149 (10)
149 (10)
150 (11)
75
162 (11)
163 (11)
164 (11)
165 (11)
80
176 (11)
177 (11)
178 (11)
180 (12)
85
191 (11)
192 (11)
192 (11)
194 (12)
90
205 (11)
206 (11)
207 (11)
209 (12)
95
220 (11)
220 (11)
221 (11)
224 (11)
100
238 (11)
238 (11)
239 (11)
242 (12)
105
256 (12)
256 (11)
257 (12)
260 (12)
110
274 (12)
274 (11)
275 (12)
278 (12)
115
292 (11)
292 (11)
294 (12)
296 (12)
120
311 (11)
310 (11)
312 (11)
315 (12)
125
329 (10)
328 (10)
330 (11)
333 (11)
