Installation guide

--_ Table 6_ELECTRIC HEAT PRESSURE DROP TABLE
Small Cabinet: 024-036CFM
500 600 700 800 900 1000 1100 1200 1300 1400
5 kW 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.04
10 kW 0.00 0.00 0.00 0.00 0.00 0.02 0.04 0.06 0.07 0.00
15 kW 0.00 0.00 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14
20 kW 0,00 0.00 0.02 0.04 0.06 0.08 0.09 O.11 0.13 0 15
1500
0.06
0.10
0.16
0.17
1600
0.07
0.11
0.18
018
5 kW
10 kW
15 kW
20 kW
ELECTRIC HEAT PRESSURE DROP TABLE
Large Cabinet: 042-060
CFM
11O0 1200 1300 1400 1800 1600 1700 1800 I gO0 2000 2100 2200 2300
0.0O 0.00 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10
0,00 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.08 0.10 0.11
0.00 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13
0.02 0,03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.14
24O0
0.11
0.12
0.14
0.15
25O0
0.12
0.13
0.15
0.16
Balance Point Worksheet
70
60
_- 50
co
0 >,
oO
N 20
10
0
Based on Indoor Entering Air of 70 F and Rated CFM
-10 0 10 17 20 30 40 47 50
Outdoor Air Temp (Deg F)
6O
Step 3_Defrost Control
QUIET SHIFT
Fig. 24---50JZ Balance Point Worksheet
C00138
Quiet Shift is a field-selectable defrost mode, which will eliminate
occasional noise that could be heard at the start of defrost cycle
and restarting of heating cycle. It is selected by placing DIP swilch
3 (on defrost board) in ON position.
When Quiet Shift switch is placed in ON position, and a defrost is
initiated, the following sequence of operation will occur. Revers-
ing valve will energize, outdoor fan will turn off, compressor will
turn off for 30 sec and then turn back on to complete defrost. At
the start of heating after conclusion of defrost reversing valve will
de-energize, compressor will turn off for another 30 sec, and the
outdoor fan will stay off for 40 sec, before starting in the Heating
mode.
19