©2025 Copeland LP.
026-1803 R13 Supervisor I&O User Guide 7 - 7
7.2.6 MultiFlex Rooftop Control
Board (RCB)
The MultiFlex Rooftop Control Board (RCB) (P/N 810-3062) is
a rooftop HVAC control board for use either as a stand-alone
controller or in zone control applications using a Supervisory
Controller building control system. The MultiFlex RCB is
capable of controlling heat and cool stages, fans,
humidification and dehumidification devices, economizers
using on-board I/O and control algorithms, as well as monitor
and interact with other building control systems and
peripherals (such as smoke alarms and CO2 sensors).
The RCB is an improved version of the MultiFlex RTU. The
RCB has sixteen fully configurable analog and digital input
points, whereas the RTU has only eight inputs, two of which
are configurable. The RCB has four analog outputs for use in
controlling variable speed fans, economizers or modulating
heating and/or cooling valves, whereas the RTU has only two
analog outputs for use only with VS fans and economizers.
The RCB also features a more sophisticated HHT interface
and updated algorithms for controlling heating, cooling,
dehumidification, and air quality. The MultiFlex RCB-P (pulse
control board P/N 810-3076) uses an alternate control
strategy that incorporates logic for controlling heating and
cooling functions.
The MultiFlex RCB has its own installation and operation
manual, (P/N 026-1707).
7.2.7 The MultiFlex ESR Board
The MultiFlex ESR Valve Regulator board (P/N 810-3199),
shown in Figure 7-7, is an RS485 I/O Network electronic
stepper valve regulator capable of driving up to eight stepper
motor valves, which are typically used to control temperature.
The MultiFlex ESR uses suction side variable-position
evaporator regulators (ESRs) to vary evaporator pressure for
an entire circuit and is an alternative to mechanical EPR
control.
The MultiFlex ESR receives input data from Supervisory
Controller (via the I/O Network) and then regulates the
stepper valves according to the data from the Supervisory
Controller.
Each MultiFlex ESR board requires a Class 2, 80VA 24VAC
center-tapped transformer for power. Transformer (P/N 640-
0080) is a multi-tapped primary transformer that may be used
with the MultiFlex ESR board.
7.2.8 Hand-held Terminal
(P/N 814-3110)
The Hand-held Terminal (HHT) is used by manufacturers and
service technicians to diagnose and test several of
Copeland’s existing and legacy products. The HHT can be
used on any Copeland product with an RJ-11 connector. The
most common applications include:
• All MultiFlex I/O boards and the 8ROSMT
• All Gateway boards
• Stand-alone MultiFlex boards (RTU, RCB, PAK, CUB)
• CCB and CC-100 case controllers
Table 7-5 - MultiFlex RCB
LEGEND
1 INPUT POWER (24VAC) 9 RS485 TERMINATION JUMPERS
2 RS485 I/O NETWORK 10 HAND-HELD TERMINAL JACK
3 RCB INPUTS 1-8 11 RELAY OUTPUT CONNECTORS
4 RCB INPUTS 9-16 12
RELAY OUTPUT FUSES (2A rated,
250V slow-blow)
5
NETWORK ID DIP SWITCHES (S3,
S4)
13 RELAY STATUS LEDs
6
INPUT TYPE DIP SWITCHES (S1,
S2)
14 OUTPUT FAIL-SAFE SWITCHES
7
BOARD STATUS LEDs (Code A,
Code B, General Status)
15 ANALOG OUTPUTS
8
DC POWER OUTPUTS (3 at
+5VDC, 1 at +12VDC)
16 NETWORK STATUS LEDs
Figure 7-7 - MultiFlex ESR Board Layout
8
3
7
24VAC CT 75 VAC Power Input
Valve Connectors (8)
I/O Network Input
Termination Jumpers
Network Address Switches
General Status LED
1
5
2
3
4
6
7
8
HHT Jack
TX and RX LEDs
9
10
Open LED (8)
Close LED (8)
To Next Page
Loading...