Controls, Start-Up, Operation, Service and ... - Climayoreo
Controls, Start-Up, Operation, Service and ... - Climayoreo
Controls, Start-Up, Operation, Service and ... - Climayoreo
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Use the following procedure to adjust charge on Circuit B<br />
of Humidi-MiZer equipped units:<br />
1. <strong>Start</strong> all compressors <strong>and</strong> outdoor fans. Allow unit to run<br />
for 5 minutes.<br />
2. Switch system to run in a Dehumidification mode for 5<br />
minutes by switching RHV to ON through the <strong>Service</strong><br />
Test function (<strong>Service</strong> TestCOOLRHV).<br />
3. At the end of the 5 minute period, switch back into Cooling<br />
mode through the <strong>Service</strong> Test function (<strong>Service</strong><br />
TestCOOLRHV) by switching RHV to OFF.<br />
Saturated Discharge Temperature (deg F)<br />
Saturated Discharge Temperature (deg F)<br />
150<br />
145<br />
140<br />
135<br />
130<br />
125<br />
120<br />
115<br />
110<br />
105<br />
100<br />
95<br />
90<br />
30 Ton STD CAP CIRCUIT A Charging Chart<br />
All Compressors on a Circuit Must be Operating<br />
All Outdoor Fans Must be Operating<br />
Reduce Charge if Above Curve<br />
144<br />
4. Using the cooling charging charts provided (Fig. 52-89),<br />
add or remove refrigerant until conditions of the chart are<br />
met. As conditions get close to the point on the chart, add<br />
or remove charge in ¼ lb increments until complete. See<br />
paragraph “To Use the Cooling Charging Chart” for additional<br />
instructions.<br />
5. If a charge adjustment was necessary in Step 4, then repeat<br />
the steps in this paragraph (starting with Step 2) until<br />
no charge adjustment is necessary. When no more charge<br />
adjustment is necessary after switching from a Dehumidification<br />
Mode to a Cooling Mode (Steps 2 <strong>and</strong> 3), then<br />
the charge adjustment procedure is complete.<br />
85<br />
55 60 65 70 75 80 85 90 95 100 105 110 115 120<br />
150<br />
145<br />
140<br />
135<br />
130<br />
125<br />
120<br />
115<br />
110<br />
105<br />
100<br />
95<br />
90<br />
85<br />
Outdoor Air Temperature (deg F)<br />
Add Charge if Below Curve<br />
Fig. 52 — Charging Chart — 48/50P030 St<strong>and</strong>ard Units — Circuit A<br />
30 Ton STD CAP CIRCUIT B Charging Chart<br />
All Compressors on a Circuit Must be Operating<br />
All Outdoor Fans Must be Operating<br />
Reduce Charge if Above Curve<br />
55 60 65 70 75 80 85 90 95 100 105 110 115 120<br />
Outdoor Air Temperature (deg F)<br />
Add Charge if Below Curve<br />
Fig. 53 — Charging Chart — 48/50P030 St<strong>and</strong>ard Units — Circuit B<br />
SST= 60 F<br />
SST= 45 F<br />
SST= 30 F<br />
SST= 60 F<br />
SST= 45 F<br />
SST= 30 F<br />
a48-8518<br />
a48-8519