Sequence Of Operation; Cooling Capacity / Air Flow - Rinnai DO-SC18Z91 Operation & Installation Manual

FAILURE TO COMPLETE PROPER START UP AND COMMISSIONING MAY VOID BRIVIS PRODUCT
WARRANTY
7.1

SEQUENCE OF OPERATION

Check correct sequence of operation, then proceed to instruct customer on correct thermostat operation for
refrigerated cooling. Refer to the thermostat operating instructions. .
Ventilation
Set the thermostat to the fan only mode. The fan only will start and operate continuously.
Cooling
On a call for cooling the compressor and outdoor fan/s will start and cycle in response to the thermostat to maintain
the desired room temperature. The heater's fan will operate continuously or will cycle with compressor depending
on the selected fan mode.
Fault Lockout
When the high or low pressure limiting switch trips the compressor and outdoor fan/s are disabled. The compressor
and outdoor fan will remain off until the system is reset via thermostat or on/off switch.
7.2

COOLING CAPACITY / AIR FLOW

Table 6. Expanded Ratings (DO-SC22Z91 / DI-XU22) Based on 1100L/s Rated Airflow
Air Temperature Entering
Outdoor Unit °C
TC kW
27
SC kW
TC kW
30
SC kW
TC kW
35
SC kW
TC kW
40
SC kW
TC kW
43
SC kW
TC kW
46
SC kW
TC: Total Cooling Capacity
Brivis
Dry Bulb Wet Bulb
°C °C
21 15
20.7
17.1
20.2
16.8
19.2
16.3
18.3
15.7
17.1
14.8
15.5
13.2
50
Return Air Temperature
Dry Bulb Wet Bulb
°C °C
27 19
23.9
19.6
23.2
19.4
22.2
18.8
21.0
18.2
19.8
17.2
17.8
15.5
SC: Sensible Cooling Capacity
Dry Bulb Wet Bulb
°C °C
32 23
24.9
24.5
24.3
24.3
23.2
23.6
22.0
23.0
21.2
22.5
20.4
22.1
ICE Fixed Speed OIM