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Unit Maintenance
www.DaikinApplied.com 117
IM 1287-4 • REBEL APPLIED ROOFTOP
Refrigeration Only Controls (ROC)
The furnace control when the unit is equipped with
Refrigeration Only Control (ROC) requires the field provided
controller to send a 0-10V signal to the factory provided
boards. Refer to the provided wiring diagrams on the unit for
specific configurations.
The table below indicates where to land control signals for the
various control boards depending on the configuration of the
unit.
Notes:
•
It is the responsibility of the field provided controls system
to prove airflow prior to operating the heating section. A
fan delay timer needs to be implemented for gas furnace
units. A two minute delay from when the furnace is
signaled off is when the fans can stop operating.
• Gas safety valve feeding the modulating gas valve is set
to 4.5” with modulating section at high fire.
• Field provided controller must monitor the temperature
rise across the unit to ensure actual temperature rise
does not exceed the submittal selected maximum temp
rise.
Table 18: Control Board Landing
1285 board
1287 board
SCR
(100:1 turndown)
Input
0-10v signal
R-W
0-10v signal
R-W
0-10v Signal
NG
200*
222
222C
222R
222W
223
223C
223R
223W
222A**
222B**
400*
222
222C
222R
222W
223
223C
223R
223W
222A**
222B**
600*
222
222C
222R
222W
223
223C
223R
223W
222A**
222B**
800***
222
222C
222R
222W
223
223C
223R
223W
222A**
222B**
1125***
222
222C
222R
222W
223
223C
223R
223W
222A**
222B**
LP
200*
222
222C
222R
222W
223
223C
223R
223W
400*
222
222C
222R
222W
223
223C
223R
223W
600*
222
222C
222R
222W
223
223C
223R
223W
800***
222
222C
222R
222W
223
223C
223R
223W
1125***
222
222C
222R
222W
223
223C
223R
223W
* These inputs will only have 1x VB1285 OR 1x VB1287
** SCR will only be used with VB1285
*** These inputs will have 1x VB1285 AND 1x VB1287
ROC Analog Staging
Table 19: 200 MBH Analog Staging Information
200 MBH
2 stage
5:1 turn down
VDC signal
Total Input (BTUH)
VDC signal
Total Input (BTUH)
4
110,000
2.00
40000
9.5
200,000
2.94
60000
3.88
80000
4.83
100000
5.77
120000
6.67
140000
7.62
160000
8.56
180000
9.50
200000
Содержание Rebel Applied DPSA
Страница 15: ...Introduction www DaikinApplied com 15 IM 1287 4 REBEL APPLIED ROOFTOP Figure 17 VFD Inverter Box Components ...
Страница 109: ...Unit Maintenance www DaikinApplied com 109 IM 1287 4 REBEL APPLIED ROOFTOP Figure 159 10kW 50kW Full SCR Control ...
Страница 144: ...IM 1287 4 REBEL APPLIED ROOFTOP 144 www DaikinApplied com Furnace Wiring Diagrams Figure 178 600 MBH 2 Stage ...
Страница 145: ...Furnace Wiring Diagrams www DaikinApplied com 145 IM 1287 4 REBEL APPLIED ROOFTOP Figure 179 600 MBH 4 Stage ...
Страница 147: ...Figure 181 600 MBH 5 1 Modulation 400 MBH and 600 MBH 10 1 Modulation ...
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