Carrier AQUASNAP MPW015-045 User Manual

Page 22

First Stage Override — If the current capacity stage is zero,

the control will modify the routine with a 1.2 factor on adding

the first stage to reduce cycling. This factor is also applied

when the control is attempting to remove the last stage of

capacity.

Slow Change Override — The control prevents the capacity

stages from being changed when the leaving fluid temperature

is close to the set point (within an adjustable deadband) and

moving towards the set point.

Table 19 — Part Load Data Percent Displacement, Standard Units with Minimum Load Valve

*Hot gas bypass (minimum load) valve energized.

NOTE: These capacity steps may vary due to different capacity
staging sequences.

30MP UNIT SIZE

CONTROL

STEPS

CAPACITY STEPS

(% Displacement)

015

1
2
3

18*

50
100

020

1
2
3

25*

50
100

030

1
2
3

34*

50
100

040

1
2
3
4

21*

33
67
100

045

1
2
3
4

22*

33
67
100

CEBD430351-0396-01C

TEST

CEPL130351-01

PWR

TEST 2

LEN

STATUS

RED LED - STATUS

GREEN LED -
LEN (LOCAL EQUIPMENT NETWORK)

ADDRESS
DIP SWITCH

Fig. 10 — Energy Management Module