Ingersoll-Rand ReliaTel, Manual, Page: 72 / 176

72 RT-SVD03L-EN
until space humidity > dehumidification setpoint - 2%
and the zone temperature is approaching either the
cooling or heating setpoint.
Idle Mode Operation
If unit is in idle mode and dehumidification conditions
are met, the compressors and supply fan will be started
to a predetermined point and run until the above
termination conditions are met.
Condenser Fan Control
For single compressor units with a VSPD compressor,
the unit will also be equipped with a variable speed
VSM condenser fan motor.
The condenser fan shall be controlled based on the
following tables:
Table 27. Condenser fan control data 3 – 5 tons
OAT Condition
VSPD Comp.
Speed
3 Tons 4 Tons 5 Tons
RPM
% Cond.
Airflow
Duty
Cycle
RPM
% Cond.
Airflow
Duty
Cycle
RPM
% Cond.
Airflow
Duty
Cycle
OAT>95F Min<Hz<Max 894 100% 73% 1013 100% 84% 1076 100% 89%
45F<OAT<90F
<23Hz 383 40% 29% 473 40% 37% 524 40% 41%
25Hz<Hz<50Hz 691 70% 56% 743 70% 60% 800 70% 65%
>52Hz 894 100% 73% 1013 100% 84% 1076 100% 89%
<40F
Startup
290 32% 21% 311 22% 23% 358 22% 27%
25F<OAT<40F
Min<Hz<Max && !
Startup
236 26% 16% 311 22% 23% 358 22% 27%
OAT<20F
Min<Hz<Max && !
Startup
236 26% 16% 311 22% 23% 358 22% 27%
Note: A 2 Hz hysteresis around the VSPD compressor speed will be implemented when transitioning from high speed to low speed.
Table 28. Condenser fan control data 6 – 10 tons
OAT Condition
VSPD Comp.
Speed
6 Tons 10 Tons
RPM
% Cond.
Airflow
Duty
Cycle
RPM
% Cond.
Airflow
Duty
Cycle
OAT>95F Min<Hz<Max 1001 100 83% 1130 100% 94%
45F<OAT<90F
<48Hz 473 40 31% 532 40% 37%
50Hz<Hz<70Hz 733 70 56% 831 70% 65%
>72Hz 1001 100 83% 1130 100% 94%
25F<OAT<40F Min<Hz<Max 312 22 16% 352 22% 20%
OAT<20F Min<Hz<Max 312 22 16% 352 22% 20%
OAT Condition
VSPD Comp.
Speed
7.5 Tons 8.5 Tons
RPM
% Cond.
Airflow
Duty
Cycle
RPM
% Cond.
Airflow
Duty
Cycle
OAT>95F Min<Hz<Max 1111 100% 92% 1116 100% 92%
45F<OAT<90F
<23Hz 465 40% 31% 465 40% 31%
25Hz<Hz<53Hz 790 70% 61% 790 70% 61%
>55Hz 1111 100% 92% 1116 100% 92%
25F<OAT<40F Min<Hz<Max 300 22% 15% 300 22% 15%
OAT<20F Min<Hz<Max 300 22% 15% 300 22% 15%
Note: A 2Hz hysteresis around the VSP compressor speed will be implemented when transitioning from high
speed to low speed.
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