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YP7999A1000 CONTROLINKS™ FUEL AIR RATIO CONTROL PANEL
66-2060—01 4
1
Carefully check field wiring and terminal designations in this document and the associated wiring diagram. They are different
from those of the individual components.
2
The circuit protection incorporated into this control panel is designed to serve as supplemental protection only. It is the respon-
sibility of the end user to provide appropriate protection on the service to this control panel. Refer to the National Electric Code
and UL standard 1077 for more information on this subject. Use 16 AWG MTW wire.
3
Low voltage wire to the firing rate actuators must be run in separate conduit. Line voltage wiring to actuators may be obtained
from terminals 4, 2 and GND or provided by customer. Run line voltage wires in separate conduit. Refer to the ML7999A prod-
uct sheet for details.
4
Connect the shield ground of the ML7999A actuator(s) to the earth ground strip provided in the Q7999 universal subbase, on
the low voltage side. Connect the shield at the controller end only. Refer to the ML7999A product sheet for details.
5
COM 2 on the S7999D is wired to field terminals for customer use. Customer may wire an existing Modbus-capable RM78xxL
burner control and/or Modbus-enabled UDC2500/3200/3500 controls in a daisy-chain fashion to the customer terminals for dis-
play on the S7999D. Refer to the S7999D, S7800A or S7810M and UDC control product manuals for further information on wir-
ing and S7999D display set-up.
6
Installation, operation and maintenance shall conform with National Fire Protection Association standards, national and local
codes and authorities having jurisdiction.
7
For detailed device wiring information, refer to the R7999, Q7999A, ML7999A and S7999D1048 product sheets.
215
3,4
DR1 FGR/4th Channel Actuator DR1 command input
216
3,4
DR2 FGR/4th Channel Actuator DR2 command input
217
3,4
CW FGR/4th Channel Actuator potentiometer CW output
218
3,4
S FGR/4th Channel Actuator potentiometer S output
219
3,4
CCW FGR/4th Channel Actuator potentiometer CCW output
GND
3,4
Ground FGR/4th Channel Actuator ground
223 XmA+ Auxiliary 4-20mA+ input from Stack/Water temperature sensor (used for low fire hold)
220 XmA- Auxiliary 4-20mA- input from Stack/Water temperature sensor (used for low fire hold)
224 CmA+ 4-20mA+ input from Firing Rate control
225 CmA- 4-20mA- input from Firing Rate control
231
5
COM 2 A S7999D COM 2 Modbus A / Data + terminal
232
5
COM 2 B S7999D COM 2 Modbus B / Data - terminal
228
5
COM 2 GND S7999D COM 2 Modbus C / Ground terminal
Table 1. Field Wiring and Terminal Designation
1
. (Continued)
Terminal #
To Connecting
Device Description