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191VAN Evolution™ Extreme Variable Speed Air Conditioner: Installation Instructions
Check Charge - Cooling / Heating
The check charge workflow allows a user to operate the system at fixed,
charge mode operating parameters. In cooling this can be used to
evaluate subcooling using the sensors on the unit. Before adjusting
charge, it is recommended to verify subcooling measurements at the
liquid service valve. Refer to
Table 4
temperature for a given subcooling and liquid service valve pressure.
Fig. 20 – Selecting Charge Mode
When indoor and outdoor conditions are in range, "clg check charge"
status will be green and available. If conditions are outside the range,
"clg check charge" will still be available unless dissipation fault is active
or outdoor ambient temperature is too low. Additionally, a note will be
displayed below the status indicating the reason for why a given mode is
not available.
Pressing "clg check charge" in
charge mode start" screen that is outlined above in steps 8-11. Follow
these steps to complete charge verification. Only use "clg check charge"
mode to adjust charge when subcooling is available.
Fig. 21 – Cooling Charge Mode
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
for guidance on required liquid line
Fig. 21
will take the user to the "cooling
Post Charging
Final charge should be recored on the outdoor unit charging label with
permanent and legible writing. Total refrigerant charge is factory charge
plus any added charge. Verify the indoor space served by the indoor
unit, including spaces connected by ductwork, exceeds the minimum
room size as listed on the outdoor unit charging label. Refer to
Table 5 – Minimum Room Area Charging Table
Total System Charge (lbs.)
4
5
6
7
8
9
10
11
12
13
14
15
16
A240376
17
18
19
20
21
22
23
24
25
A240377
12
Table 5
2
2
Minimum Floor Area ft.
(m
)
61 (5.7)
76 (7.0)
91 (8.5)
106 (9.8)
122 (11.3)
137 (12.7)
152 (14.1)
167 (15.5)
182 (16.9)
198 (18.4)
213 (19.8)
228 (21.2)
243 (22.6)
258 (24.0)
274 (25.5)
289 (26.8)
304 (28.2)
319 (29.6)
335 (31.1)
350 (32.5)
365 (33.9)
380 (35.3)
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