Carrier 09DK054-094 - Manual (Page 23)

Table 3 — Available Liquid Lift, Ft (m)
UNIT
REFRIGERANT
R-22 R-502 R-134A
Temperature Difference F (C)
20
(11.1)
30
(16.7)
20
(11.1)
30
(16.7)
20
(11.1)
30
(16.7)
054
60
(18.3)
50
(15.2)
60
(18.3)
44
(13.4)
29
(8.8)
26
(7 9)
064
41
(12.5)
31
(9.5)
41
(12.5)
25
(7.6)
20
(6.1)
6
(1 8)
074
44
(13 4)
34
(10.4)
44
(13 4)
28
(8.5)
18
(5 5)
7
(2 1)
084
51
(15.6)
41
(12.5)
51
(15 6)
35
(10.7)
22
(6.7)
10
(3.1)
094
41
(12.5)
31
(9.5)
41
(12.5)
25
(7.6)
18
(5.5) (0.3)
NOTES:
1. The liquid lift data allows for a 7 psi (48 kpa) drop for liquid line
accessories, and a 2° F (1.1° C), liquid line loss with maximum
change
2 Temperature difference = Saturated condensing temperature (en­
tering) — Entering-air temperature (dry bulb) in degree F (° C).
3. The liquid lift data is based on 15° F (8.3° C) subcooling, 95 F
(35 C) entering-air temperature, and a 50/50% capacity split ap­
plication. Subcooling based on condenser subcooling = Satu­
rated condensing temperature entering - Actual temperature leaving
the coil
Step 4 - Complete Electrical Connections
GENERAL — Verify nameplate electrical requirements match
available power supply. Voltage at condenser must be within
the minimum and maximum shown in Table 4 and phases
must be balanced within 2%. Contact local power company
for line voltage corrections. Never operate a motor where a
phase imbalance in supply voltage is greater than 2%.
Use the following formula to determine the percentage of
voltage imbalance:
max voltage deviation
% Voltage _ inn V average voltage
Imbalance ^ average voltage
Example: Supply voltage is 240-3-60.
AB = 243
V
BC = 236 V
AC = 238
V
Average Voltage =
243 + 236 -F 238
717
3
= 239 V
Determine maximum deviation from average voltage:
(AB) 243 - 239 = 4
V
(BC) 239 - 236 = 3
V
(AC) 239 - 238 = 1
V
Maximum deviation is then 4 v. To determine the percent­
age of voltage imbalance:
4
% Voltage Imbalance = 100 x---------
239
= 1.7%
This amount of phase imbalance is satisfactory since it is
below the allowable maximum of 2%.
IMPORTANT: If supply voltage phase imbalance is
more than 2%, contact your local electric utility com­
pany immediately.
Condenser operation on improper line voltage or exces­
sive phase imbalance may be considered abuse and any re­
sulting damage may not be covered by Carrier warranty.
All wiring must be in accordance with local or NEC
(National Electrical Code) regulations.
FIELD CONNECTIONS - Refer to Table 4 and Fig. 16,
20, and 29 for field wiring details.
23