Automatic Heat/Cool Changeover Status LED

TB-204 Models BMPlus2000/4000/6000/8000
Compatible
Thermostats
Compatible with most heat/cool
mechanical or electronic thermostats
that operate on 24VAC, battery power
or power robbing types that draw less
than 25 ma of current, in zones 1 thru
8. Compatible with most heat pump
thermostats in zone 1.
Automatic
Heat/Cool
Changeover
The BMPlus panel features automatic
changeover from any thermostat
allowing for individual zone comfort of
the HVAC system.
Status LED
The STATUS LED pulses 3 short and 1
long, during normal operation to
indicate the processor is operating
properly.
System LEDs
LEDs labeled G, W1/B, W2 and Y
indicate the system operations.
Damper LEDs
LEDs labeled Zone 1 thru Zone 8
indicate which dampers are open.
Operating
Power
Operates on 24VAC power supplied
from a separate transformer. A single
40VA transformer can power four
zones,with a total of five dampers.
8VA draw per damper.
4
3
2
ON
1
R12
R13
SEE MANUAL BEFORE
SETTING DIP SWITCHES
C5
C
R
T
S
T
A
T
2
OFF E
M
R16
R11
H
E
ON A
T
EM
RN3
G
W1/B/O
Y
R10
C
R
T
S
T
A
T
1
C8
+
JPR
+
C7
R15
R14
D9
D8
D7
D6
D5
D4
D3
D2
W
RN4
RN2
RN1
U4
R2
U2
C3
JPR
JPR
VR2
MODEL BMPlus2000
VR1
D1
XFR1
Circuit breaker
type fuse.
JPR
JPR
C1
C15
JPR
Y
D17
D16
D15
D14
D13
D12
D11
D10
JPR
C9
G
R18
R17
JPR
EWC CONTROLS, INC.
BMPlus2000
D18
S
E
L
R1
JPR
OSC
JPR
+
G
STATUS
E
JPR
MOV1
R4
R3
C11
+
F1
RH
24 2
VAC 1
D22
D21
C12
+
U3
W1
B
C18
RC
TIMER
RESET
S
Y W1/B
S
O
T
E
G
M
Y
50
COOLING LIMIT
C4
R9
SYSTEM
RESET
Y
35
170
HEATING LIMIT
G/HP
K4
M1
W2/E
160
35 110
F
A
N
W2
E
M4
45
40
U1
C10
+
K5
M1
M2
30 120
W2 TIMER
Z1
150
NO
B
HP
HP
C2
JPR
10
140
130
C6
M6
25
5
M4
M2
20
15
D20
D19
D
M
P
R
1
Z2
MOV3
M6
R19
K6
1
MOV2
Controls heat pumps with O or B type
reversing valves, and electric or fossil
fuel back-up. Also two-stage gas or oil
fired furnaces, with single stage
electric air conditioning.
R5
C14
SA
SNR
D
M
P
R
2
EM SW YES
TSTAT RV O
SYSTEM HC
Z1 TSTAT HC
EXPANSION
JPR
2
K3
Compatible
HVAC Systems
Controls two zones using motorized
dampers and may be expanded up to
four, six or eight zones using one, two
or three EX-2 Expansion Panels.
Intelligent microprocessor control
with automatic changeover and built-in
timers insure reliable operation.
Expands to up to 8 zones.
Heavy duty
10 amp relay.
K2
Zone Capacity
Set the call time to activate second stage
heating and heating and cooling limits.
Rugged terminal
blocks for easy
and reliable wiring.
K1
The BMPlus panel provides intelligent control of Heat
Pump or Conventional forced air zoning systems with up
to eight zones using motorized dampers and practically
any off-the-shelf heat/cool or heat pump thermostat. With
such features as automatic changeover, opposite system
service, short cycle timers and changeover timers, the
BMPlus provides the highest level of performance at an
economical cost.
Selects gas or electric fan operation.
Switch resets cycle timers and
starts Contractor Test.
LED indicators for HVAC
outputs and dampers.
Figure 1. BMPlus2000 panel showing features.
Thermal
Breaker
The BMPlus has a thermal circuit
breaker in place of a fuse, and
protects the panel from shorts in the
thermostat and damper field wiring. It
does not protect against shorts in the
HVAC system wiring.
CAUTION:When the circuit breaker is
tripped it will get quite hot. To reset the
breaker, remove the 24VAC power for
approximately 30 seconds.
Watch Dog
Circuit
The panel has a built-in circuit that
monitors the computers performance
and resets the panel if an error occurs
in operation or due to power failures.
Indoor Fan
Control
Any zone can activate the indoor fan
and only the dampers in zones calling
for continuous fan operation will open.
Continuous fan operation will only
occur when there are no heating or
cooling calls.
P/N 090375A0204 24 February 2003 REV. F Copyright C EWC Controls 2001-2003 All Rights Reserved
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-635-8646
E-Mail- info@ewccontrols.com
Indoor Fan
Control During
Heating
Set switch to E to activate the indoor
fan for electric heat only. Set the
switch to G/HP when setting up for
gas or heat pump applications.
F
A
N
E
A switch selects whether or not the
indoor fan is activated by the panel
during heating calls. The indoor fan is
always activated during cooling calls
and when used with a heat pump.
S
E
G/HP L
Momentarily pressing the TIMER
RESET button clears the built-in
timers controlling the minimum call
time, off time and changeover time.
This enables you to test the
installation faster.
Timer Reset
BUTTON
TIMER
RESET
Momentarily pressing the SYSTEM
RESET button resets the computer.
System Reset
BUTTON
SYSTEM
RESET
Figure 2. Selector switch for fan control.
Built-In Timer
Settings
The panel has built-in timers that
insure reliable operation.
*Short Cycle Timer
Emergency Heat
Switch
2 minutes, fixed.
*Minimum Call Timer 2 minutes, fixed.
20
15
25
10
30
5
35
W2 TIMER
4
3
2
1
3
2
1
EM SW YES
TSTAT RV O
SYSTEM HC
Z1 TSTAT HC
4
Selecting Type of
HVAC System
The W2 TIMER sets the amount of
continuous call time in 1st stage,
before second stage heating is
energized.
40
37
43
46
49
52
34
COOLING LMT
2
4
3
160
110
170
HEATING LMT
Enabling or Disabling
the Panel EM Switch
EM SW YES
NO DIP switch 4 should always be set to
TSTAT RV O
B
SYSTEM HC
HP NO when a heat pump type
Z1 TSTAT HC
HP thermostat is used in Zone1.
2
120
the supply air temperature at which
the heating is cycled off and the fan
continues to run.
The Cooling Limit potentiometer sets
the supply air temperature at which
the cooling is cycled off and the fan
continues to run.
1
150
DIP switch 2 selects whether a
gas/electric (HC) or heat pump (HP)
type of HVAC system is being
controlled.
If the HP thermostat has an O/B
terminal or is programmable, set DIP
switch 3 to match the reversing valve
type and program the thermostat.
ON
140
NO
B
HP
HP
Selecting Type of
HP Thermostat (O/B)
EM SW YES
NO If the HP thermostat used in Zone1
TSTAT RV O
B
SYSTEM HC
HP has separate O and B terminals, set
Z1 TSTAT HC
HP DIP switch 3 to match the reversing
valve type, and connect to the panel
terminal W1/B/O.
Heating and Cooling
Limit Settings
The Heating Limit potentiometer sets
130
DIP switch 1 selects whether a
heat/cool (HC) or heat pump (HP)
type thermostat is used in Zone1.
2
Stage Two
Heating Timer
A built-in timer prevents the system
from rapidly switching between
heating and cooling. At the end of a
call, a five-minute timer is started and
the panel will not switch to the
opposing system until the timer has
expired.
NO
B
HP
HP
1
Changeover
Timer
EM SW YES
TSTAT RV O
SYSTEM HC
Z1 TSTAT HC
4
When the system is satisfied, the
panel will not resume the same call for
a minimum of 2 minutes.
Short Cycle
Timer
Selecting Zone1
Thermostat
3
When a call is activated the panel will
run the system in that mode for a
minimum of 2 minutes.
Selecting the Options Using the DIP Switches
4 DIP switches allow you to select the type of thermostat
used in Zone1, the type of HVAC system,O or B reversing
valve, and to enable or disable the panel EM HEAT switch.
ON
Minimum Run
Timer
OFF
ON
*Opposing System 20 minutes, fixed.
Service Timer
*Second Stage
5 to 35 minutes,
Heating Timer
adjustable.
ON
ON
*Changeover Timer 5 minutes, fixed.
A switch is provided on the panel
which allows the user to set the
system to emergency heat mode,
when a heat/cool thermostat is used
in Zone1, instead of a heat pump
thermostat.
CAUTION: When using a heat pump
thermostat in zone 1, you must set DIP switch
4 to the OFF( NO) position!
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-635-8646
E-Mail- info@ewccontrols.com
INSTALLATION INSTRUCTIONS
For heat pump thermostats with
separate O & B terminals, wire to
match the reversing valve type, and
connect to panel terminal W1/B/O.
All wiring should be done to local and national codes and
ordinances. Use color-coded, multi-conductor wire. Wire
number to number or letter to letter on each control.
ZONE THERMOSTAT
WARNING: THESE PANELS ARE DESIGNED FOR USE WITH
24VAC. DO NOT USE OTHER VOLTAGES! USE CAUTION TO
AVOID ELECTRIC SHOCK OR EQUIPMENT DAMAGE.
Mo
10:30
AM
68
Cool
FAN
Thermostat
Wiring
EM
Most heat/cool thermostats can be
used with the BMPlus panel. Either a
heat/cool or a heat pump type
thermostat can be used in Zone1.
Typical thermostat installation is
shown below.
G
O
ON
AUTO
B
Y
EM
G
W1/B/O
T
Y
S
T
C
A
R
T
1
DIP switch 1 should be set to
HP, DIP switch 2 should be
set to HP, DIP switch 3 should
be set to O, and DIP switch 4
should be set to NO, to
disable the EM HEAT switch
on the panel for heat pump
systems.
COOL OFF HEAT
C
RC
EM. HEAT
RH
Connect RH and RC
on single transformer
systems.
ZONE THERMOSTAT
Mo
10:30
AM
68
Cool
You must use a
HP style T-stat
that has a true
emergency “E”
terminal. Do not
use T-stats that
have a W2 terminal
that doubles as
the emergency
terminal!
FAN
ON
G
DIP switch 1 should be set to
HC, and DIP switch 4 should
be set to YES, to enable the
EM HEAT switch on the panel
for heat pump systems.
W
Y
EM
G
W1/B/O
T
Y
S
T
C
A
R
T
1
AUTO
COOL OFF HEAT
RC RH
Connect RH and RC
on single transformer
systems.
Figure 3c. Wiring for heat pump
thermostat with both O and B
terminals in Zone1.
For heat pump thermostats with a
single O/B terminal, or is output
programmable. Wire to match the
reversing valve type, connect to the
terminal W1/B/O, and program the
thermostat.
ZONE THERMOSTAT
Mo
10:30
AM
68
Cool
Figure 3a. Wiring for heat/cool
thermostat in Zone1.
FAN
ON
DIP switch 1 should be set to
HP, DIP switch 2 should be
set to HP, DIP switch 3 should
be set to O, corresponding to
the thermostat setting and
DIP switch 4 should be set to
NO, to disable the EM HEAT
switch on the panel for heat
pump systems.
ZONE THERMOSTAT
70
60
50
80
80
70
60
50
G
G
Y
W
C
R
Y
W
R
T
S
T
A
T
2
EM
G
W1/B/O
T
Y
S
T
C
A
R
T
1
G
O/B
AUTO
COOL OFF HEAT EM. HEAT
Y
C
RC
RH
Connect RH and RC
on single transformer
systems.
Figure 3d. Wiring for heat pump
thermostat with a single O/B
terminal in Zone1.
Figure 3b. Typical heat/cool thermostat
wiring for Zones 2 thru 8.
.
A single 24VAC, 40VA transformer can
power the BMPlus panel and one EX-2
expansion panel with one damper on
each zone. It is important that the
24VAC terminals 1 and 2 be wired the
same as shown in figure 9. Reversing
the terminal wiring can damage the
panel.
EM
SUPPLY AIR SENSOR (SA SNR)
EX-2 Expansion Panel
1 - Common
2 - Hot
24 2
VAC 1
BM*PLUS Panel
Line
Voltage
TRANSFORMER
24V, 40VA
24VAC power wiring.
24 2
VAC 1
Remove the supplied resistor
from the SA-SNR terminals and
connect the SAS wires.
Polarity is not important.
The SAS should be mounted in
the supply air stream, after the
“A” coil.
In a heat pump application, it
should be mounted before the
electric strip heat.
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-635-8646
E-Mail- info@ewccontrols.com
3
Panel Internal On the BMPlus panel, the fan (G),the
Wiring
reversing valve (O), and the
compressor (Y), are powered by the
RC terminal. The heating (B), and
reversing valve (W1/B), is powered by
the RH terminal. ( W2) is powered
from W1/B.
Typical heat pump system wiring
Heat Pump
using a single transformer is shown
with O Type
Reversing Valve below. Be sure to add a jumper wire
between RC and RH as shown.
Typical gas/electric system wiring
using a single transformer is shown
below. Be sure to add a jumper wire
between RC and RH as shown.
Single
Transformer
G/E Systems
COMPRESSOR
RELAY
C
Y
Jumper
Wire
FAN RELAY
O
Jumper
Wire
G
RC
RH
G
RC
RH
Y
S W2/E
Y
Y
S
T
O
E W1/B
M
G
COMPRESSOR
RELAY
W2/E
S
Y
Y
S
O
T
E W1/B
M
G
OUTDOOR UNIT
C
OUTDOOR UNIT
REV. VALVE
W2/E
FAN RELAY
EMERGENCY
W1/B
R
GAS VALVE
W2
TRANSFORMER
FURNACE
TERMINAL BOARD
GAS VALVE
Figure 4c. Heat pump system with O type valve.
R
TRANSFORMER
FURNACE
TERMINAL BOARD
Figure 4a. Single transformer gas/electric system.
Two
Transformer
Systems
Wiring diagram for a typical oil burner
or hot water coil heating with electric
cooling. No jumper wire is required
between RC and RH.
OUTDOOR UNIT
W2/E
S
Y
Y
S
O
T
E W1/B
M
G
COMPRESSOR
RELAY
Simple Dual Fuel Application
DUAL FUEL SET-UP w/OAT
HEAT PUMP
1 STAGE
X
O
Y
C
R
35 DEG. F. SPDT
OUTSIDE AIR
T’STAT
B
R
RC
RH
W
GAS
FAU
1or2 STAGE
W2
W1
G
Bonnet
T-stat 140 F.
Y
G
C
FAN RELAY
R
R
C
TRANSFORMER
BMPlus2000
MAY BE DIFFERENT COLOR
LEAD WIRES INSTEAD OF
LETTERED TERMINALS
OIL
BURNER
PRIMARY
CONTROL
CIRCULATOR T
RELAY OR HOT
WATER VALVE T
Figure 4b. Two-transformer HVAC system.
4
SYSTEM
NOTE:
Bonnet Thermostat can
be adjustable snap-disc
type, or bulb type.
Opens on temperature rise.
Range = 100 - 200 F.
W2/E
W1/B
O
Y
G
RH
RC
Figure 5. Single stage heat pump and 1or 2 stage furnace.
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-635-8646
E-Mail- info@ewccontrols.com
Rectangular
Damper Wiring
Spring Return
Motor Wiring
A single SMD/BMD damper motor is
wired to the M1, M4 and M6 terminals
as shown in figure 6a.
Spring Return Motor wiring
Jumper
Wire
4
5
6
Z
1
2
3
X
D
M
P
R
1
{
MA-SR
MA-ESR
M6
M4
M2
M1
D
M
P
R
1
M6
M4
M2
M1
Figure 6a. A zone controlling one SMD/BMD damper.
Wiring Two
Rectangular
Dampers
Wiring two SMD/BMD damper motors
controlled by one zone is shown in
figure 6b.
SMD/BMD Damper
Motor Wiring
4
Jumper
Wire
1
5
2
6
3
Figure 8.
.
SMD/BMD Damper
Motor Wiring
Z
X
This diagram shows how to wire a spring return damper. A power
close style damper is wired M1 & M6. Power open style damper is
wired to M1 & M4.
Jumper
Wire
4
5
6
Z
1
2
3
X
D
M
P
R
1
M6
M4
M2
M1
M6
M4
M2
M1
1 4 6
CLOSED OPEN
Figure 6b. Recommended tandem wiring.
Damper terminal
designations.
}
Terminal M1 Common.
MA ND/URD
Terminal M2 Constant 24VAC.
Terminal M4 24VAC to open damper.
Terminal M6 24VAC to close damper.
Note: All zone dampers stroke to the "open" position, when
all zones are satisfied and the HVAC system is idle!
Figure 9. A zone controlling 1 ND/URD damper.
Controlling 3 or A relay can be added to the system to control more than two dampers per zone. Figure 7a shows a relay
More Dampers used to control four SMD/BMD's using the "R4" relay which has four sets of contacts (4-pole) with both
From One Zone normally open and normally closed contacts. If more than four SMD/BMD's are required on a single
zone, a second R4 relay can be added and the coils wired in parallel.
Numbers in circles below refer to the terminal numbes on the socket for the R4 relay.
TRANSFORMER
24V, 40VA
R4
Relay
Coil
R4 Type Relay
5
Jumper
Wire
9
1
6
10
2
7
13
11
3
8
12
4
4
5
6
Z
4
5
6
Z
4
5
6
Z
4
5
6
Z
1
2
3
X
1
2
3
X
1
2
3
X
1
2
3
X
14
D
M
P
R
1
M6
M4
M2
M1
Control Panel
Figure 7. A zone controlling four SMD/BMD dampers using the R4 relay.
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-635-8646
E-Mail- info@ewccontrols.com
5
Setting the
Expansion
Panel
DIP Switches
Each expansion panel has a 5-position
DIP switch that must be set as shown in
figure 10, to insure the system operates
properly.
R19
R18
R16
R5
R4
R3
R2
TP GND
R17
R16
R5
R4
R3
R2
TP GND
C6
F1
G
Y
W
C
R
T
S
T
A
T
G
Y
W
C
R
T
S
T
A
T
G
Y
W
C
R
T
S
T
A
T
G
Y
W
C
R
T
S
T
A
T
DIP switch settings for
third expansion panel.
VR1
INPUT
ABCDE
R19
R18
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
J3
+C2
C14
U2
TP5VDC
U1
VR2
D1
XFR1
T
S
T
A
T
ON
R8
R7
R6
J1
J2
R15
R14
R13
R12
R11
R10
R9
RN1
U3
C3
C7
J4
C5
C4
TP24 +
+
C1
R1
OSC
DMPRA
K1
C9
C8
M1
24 2
VAC 1
OUTPUT
U1
D15
D14
D13
ABCDE
C12
K1
C10
M1
D M6
M M4
P
R M2
G
Y
W
C
R
MODEL EWC EX-2
C13
Intelligent Zone Control
M6
D
M M4
P
R M2
INPUT
DMPRB
C11
VR1
ON
F1
C6
XFR1
R17
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
U2
TP5VDC
+C2
J3
VR2
D1
C14
T
S
T
A
T
ABCDE
J1
J2
R15
R14
R13
R12
R11
R10
R9
RN1
R1
U1
G
Y
W
C
R
ON
R8
R7
R6
D15
D14
D13
ABCDE
U3
C3
C7
J4
C5
C4
TP24 +
+
C1
C8
M1
24 2
VAC 1
DIP switch settings for
second expansion panel.
R19
R18
R16
R5
R4
R3
R2
TP GND
F1
C6
XFR1
R17
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
U2
TP5VDC
+C2
J3
VR2
D1
C14
VR1
INPUT
ABCDE
J1
J2
R15
R14
R13
R12
R11
R10
R9
RN1
R1
U1
ON
R8
R7
R6
D15
D14
D13
ABCDE
ON
OSC
U3
C7
J4
C5
+
C1
C8
M1
24 2
VAC 1
C4
TP24 +
C3
C9
K1
M1
D M6
M M4
P
R M2
OUTPUT
U1
DMPRA
C10
C12
K1
M6
D
M M4
P
R M2
C13
Intelligent Zone Control
DMPRB
C11
MODEL EWC EX-2
DIP switch settings for
first expansion panel.
3
2
1
ON
R13
R12
OFF E
M
R11
H
E
ON A
T
EM
RN3
G
W1/B/O
Y
C
R
T
S
T
A
T
1
JPR
VR2
MODEL BMPlus2000
VR1
C6
D1
C5
R
T
S
T
A
T
2
C2
C1
C15
JPR
C
RN4
RN2
+
C7
C3
JPR
SYSTEM
RESET
RN1
U4
U2
R2
OSC
U1
G/HP
STATUS
R1
JPR
JPR
R15
R14
D9
D8
D7
D6
D5
D4
D3
D2
W
R16
D17
D16
D15
D14
D13
D12
D11
D10
JPR
C9
Y
R18
R17
JPR
EWC CONTROLS, INC.
BMPlus2000
D18
S
E
L
F
A
N
JPR
JPR
+
XFR1
D22
D21
E
K1
MOV1
U3
TIMER
RESET
C12
+
JPR
G
2
24
VAC 1
R4
R3
C11
+
RH
50
COOLING LIMIT
C4
R9
D20
D19
C10
+
K5
K4
F1
C18
RC
W1
B
K2
Y
S
Y W1/B
S
O
T
E
G
M
Y
35
HEATING LIMIT
G
R10
160
170
NO
B
HP
HP
C8
+
30 120
W2
E
45
40
35 110
M1
W2/E
150
5
M6
M2
140
130
W2 TIMER
M1
M4
25
10
Z1
M2
20
15
JPR
JPR
K6
Z2
MOV3
M6
M4
K3
D
M
P
R
1
R19
SEE MANUAL BEFORE
SETTING DIP SWITCHES
R5
C14
1
D
M
P
R
2
EM SW YES
TSTAT RV O
SYSTEM HC
Z1 TSTAT HC
EXPANSION
JPR
2
SA
SNR
4
Jumper Cable
MOV2
Eight-Zone System BMPlus8000
Six-Zone System BMPlus6000
Four-Zone System BMPlus4000
Two-Zone System BMPlus2000
OSC
DMPRA
C10
C9
K1
M1
D M6
M M4
P
R M2
OUTPUT
U1
K1
M6
D
M M4
P
R M2
C12
ON
DMPRB
C11
MODEL EWC EX-2
C13
Intelligent Zone Control
Figure 10. Proper connection and DIP switch settings for a 2, 4, 6 or 8 zone system.
6
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-635-8646
E-Mail- info@ewccontrols.com
SERVICE GUIDE
Some Helpful
Guidelines
All VDC measurements on the panel
and VAC measurements at the
damper terminals and thermostat
terminals should be made with the
ground lead of your meter on terminal
1 of the 24VAC input terminals.
All VAC measurements at the HVAC
system terminals (W1/B, O, Y, W2/E &
G) should be made with the meter
ground lead on the system's C
terminal at the HVAC system.
Check 24VAC
Power
Dampers Not
Responding
Properly
If the ZONE 1 and ZONE 2 LEDs are
not responding properly, check the
calls on each zone thermostat. If the
calls indicate a damper should be
activated and is not, press the TMR
RESET switch to reset the timers. If
the problem persists, see Table 2 for
service help.
Caution! The thermal fuse (F1) gets
very hot when a short occurs in the
24VAC wiring or the panel. Always use
caution when checking the fuse.
When measuring 24VAC, the voltage
can vary from 22 to 28VAC.
Using the LED
Indicators
The STATUS indicator has a pulsed
blink rate. Three short pulses and one
long pulse, to indicate the processor
is operating properly. A 1 second
blink indicates the panel is in supply
air limit mode. A rapid blink rate
indicates the supply air sensor or
resistor is open or shorted.
Measure 24VAC at all damper M1 and
M2 terminals and all T-stat R and C
terminals. Measure +5VDC at the 5V
test point (see figure 11 for location)
and +24VDC at the 24V test point.
See Table 1 if any of these voltages
are incorrect.
If the ZONE 1 and ZONE 2 LED
indicators are illuminated but the
dampers appear to be malfunctioning,
check the damper field wiring.
HVAC System
Not Responding
Properly
If the HVAC LED indicators are
responding properly, but the system
appears to be malfunctioning, check
that the HVAC system is wired
correctly and that the DIP switches
have been properly set.
If the HVAC LEDs are not responding
properly, check the calls on each zone
thermostat. If the calls indicate an
HVAC call should be activated and is
not, press the TMR RESET switch to
reset the timers. Also check that the
DIP switches have been properly set.
If the problem persists, see Table 3 for
trouble shooting help.
The W1/B LED indicates that the
panel is in the heating mode. The Y
LED indicates the compressor is
energized. The W2 LED indicates 2nd
stage heat or Emergency. The G LED
indicates fan operation.
Table 1. Detecting 24VAC Shorts and Loss of +5VDC or +24VDC
Detecting
24VAC Short
If the short still persists disconnect all
the wires at each damper (M1, M2, M4
& M6). If the short clears, check the
damper wiring and the dampers.
The STATUS LED will be off, you will
measure 24VAC at the transformer
terminal 2, but not at any damper M2
terminal or any zone thermostat R
terminal. The thermal fuse will be very
hot.
Isolating
24VAC Shorts
BM2000 or EX-2
Panels
Remove the power to the panel and
all expansion panels and allow the
fuse to cool. Disconnect the jumper
cable between the panel and the first
expansion panel. Re-power the panel.
If the short persists, the problem is in
the BMPlus or its wiring.
Isolating
24VAC Shorts
Panel or Wiring
Remove the wire at each zone
thermostat R terminal and test if the
short still persists. If the short disappears, check the zone thermostat
wiring and the thermostat itself.
If the short still persists, call the
technical support hot-line.
Detecting
Loss of +24VDC
or +5VDC
The +5VDC and +24VDC can be
measured at the test points shown in
figure 11 on page 8. If either voltage
is not correct, disconnect the jumper
cable connecting the main panel and
the first expansion panel.
If the voltage problem clears, check
that the 24VAC power is wired to the
correct terminals (terminal 1 to 1 and
terminal 2 to 2 as shown in figure 9).
If the problem still persists, call the
technical support hot-line.
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-635-8646
E-Mail- info@ewccontrols.com
7
Table 2. Detecting Damper Problems
Damper LED On
But Damper Not
Responding
Check the 24VAC to insure the
expansion panel is powered and
check that the jumper cables are
installed properly.
Check the damper wiring to insure it is
correctly wired. Be sure the wires are
secured in the terminals. Test the
damper motor to insure it is properly
operating. If the problem still persists,
replace the damper.
Check that the STATUS LED is
BMPlus2000
blinking. If it is not, the panel may
Damper LED
Not Responding have been placed in the Contractor
Test inadvertently by holding the TMR
RESET switch for 15 seconds. Press
the SYSTEM RESET switch to cancel
the Contractor Test.
Check the voltage at each zone
thermostat terminal W, Y and G
terminals to insure the damper
should be activated.
If the problem still persists, call the
technical support hot-line.
Testing Damper
Motors
Press the TMR RESET switch to clear
any timers that may be keeping the
call off and the damper from not
responding.
For a BMD/SMD/ND/URD damper,
connect 24VAC common to terminal
1, and 24VAC to terminal 4 and the
damper should open. Remove
24VAC from terminal 4 and apply
24VAC to terminal 6 and the damper
should close.
Check the voltage at each zone
thermostat terminal W, Y and G
terminals to insure the damper should
be activated.
If the problem still persists, call the
technical support hot-line.
EX-2
Damper LED &
Damper Not
Responding
For a RDN/SMDL/BMDL damper,
connect 24VAC common to terminal
1, and 24VAC to terminals 2 and 4.
The damper should open. Remove
24VAC from terminal 4 and the
damper should close.
For a power close spring return
damper, connect 24VAC to the two
wires, and the damper should
CLOSE. Remove the 24VAC and the
damper should OPEN. For a power
open damper, the action will be
reversed.
If the damper is on an expansion
panel, check the DIP switch settings
on each expansion panel to insure
they are properly set.>>>
Table 3. Detecting Heating, Cooling and Fan Problems
W1/B, O, Y,
W2/E & G LEDS
On But System
Not Responding
For a gas/electric system test the
HVAC by shorting terminals R and
W1/B together to activate the heater,
RC to Y to activate the compressor
and RC to G to activate the fan. If the
HVAC system has responded
properly, call EWC technical support.
LEDs and
System Not
Responding
8
Press the TMR RESET switch to clear the
timers that may be preventing the call.
The panel could be in minimum call
time, minimum off time, changeover
delay or opposite system timing.
If the system still does not respond,
measure the voltage at each zone
thermostat terminal W1/B, O, Y, W2/E &
G to insure they are correct and a call
is in order.
Check the HVAC wiring to insure it is
correctly wired. Be sure the wires are
secured in the terminals. Check that
there is 24VAC at the RC and RH
terminals. Use the HVAC system
common (C) for the ground lead of
your meter. Check that RH and RC are
connected if the system uses a single
transformer.
For a heat pump system test the
heating by shorting terminals R to Y,
W1/B and G. For a cooling test short R
to Y, O and G.
Check that the STATUS LED is
blinking to insure the computer is
operating properly, press the SYSTEM
RESET switch if it is not.
Measuring
Thermostat
Voltages
Heat/Cool thermostats will apply
24VAC to the W1/B terminal during a
heating call. During a cooling call,
24VAC is applied to both Y and G.
A heat pump thermostat will apply
24VAC to Y, G and B for heating or O
for cooling. The EM terminal is
energized during emergency heat
calls.
During a continuous fan call, 24VAC is
applied to the G terminal. Be sure the
RC and RH terminals at the
thermostats are jumpered together.
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-635-8646
E-Mail- info@ewccontrols.com
Y
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-635-8646
R
W2/E
O
G
TRANSFORMER
FURNACE
TERMINAL BOARD
EMERGENCY
REV VALVE
FAN RELAY
C
COMPRESSOR
RELAY
OUTDOOR UNIT
URD
1
4
6
24 2
VAC 1
RH
RC
Y
S
Y W1/B
S
O
T
E
G
M
MOV1
F1
5
10
W2 TIMER
20
C15
JPR
R4
R3
D1
130
140
170
160
150
C4
R9
JPR
C9
50
45
R19
EM SW YES
TSTAT RV O
SYSTEM HC
Z1 TSTAT HC
COOLING LIMIT
35
40
EXPANSION
HEATING LIMIT
35 110
30 120
25
C1
JPR
JPR
JPR
NO
B
HP
HP
R16
JPR
All wiring should be done to local and
national codes and ordinances. Use colorcoded, multi-conductor wire. Wire number to
number or letter to letter on each control.
+24VDC TEST POINT
C5
R15
R14
D9
D8
D7
D6
D5
D4
D3
D2
D17
D16
D15
D14
D13
D12
D11
D10
R18
R17
+5VDC TEST POINT
MODEL BMPlus2000
G
JPR
W1
B
Y
W2
Z1
Z2
15
JPR
THERMAL BREAKER
XFR1
Transformer 24
Volt terminals
1 - Common
2 - Hot
*JUMPER
*
M1
M2
M4
M6
W2/E
D
M
P
R
1
D M6
M M4
P
R M2
2 M1
MOV3
MOV2
1
R5
C14
U3
2
D18
K6
K5
K4
K3
K2
K1
D20
D19
E
D22
D21
SA
SNR
U4
ND
OSC
F
A
N
STATUS
JPR
C10
+
C12
+
C11
+
C18
TIMER
RESET
SYSTEM
RESET
JPR
1
4
6
U2
RN2
RN1
JPR
T
S
T
A
T
2
R
C
Y
60
Y
70
W
RC
80
RH
50
60
70
EM
O
10:30
G
Mo
AM
B
C
RC
RH
COOL OFF HEAT EM. HEAT
Connect RH and RC
on thermostats with
separate RH and RC.
on single transformer
systems.
Y
AUTO
FAN
ON
Cool
68
ZONE THERMOSTAT
G
50
ZONE THERMOSTAT
WARNING: THESE PANELS ARE DESIGNED FOR
USE WITH 24VAC. DO NOT USE OTHER
VOLTAGES! USE CAUTION TO AVOID ELECTRIC
SHOCK OR EQUIPMENT DAMAGE.
GND TEST POINT
T
S
T
A
T
1
W1/B/O
G
EM
H
E
ON A
T
OFF E
M
R
C
W
Y
G
Model BMPlus2000 Control Panel
Two-Stage Heat, Single Stage Cooling, Auto-Changeover
Heat Pump or Gas/Electric
+
S
E
G/HP L
R1
C3
JPR
C6
EWC CONTROLS, INC.
BMPlus2000
U1
C2
R2
+
C7
VR1
ON
Rectangular Damper
Motor Wiring
WIRING DIAGRAM
JPR
4
3
2
RN4
RN3
SEE MANUAL BEFORE
SETTING DIP SWITCHES
VR2
R13
C8
+
1
R12
R11
R10
80
Figure 11. BMPlus2000 wiring diagram.
E-Mail- info@ewccontrols.com
9
Automatic
Contractor
Test
Step 1.
Step 2.
Step 3.
Step 4.
Step 5.
Step 6.
Step 7.
Step 8.
Step 9.
Step 10.
Step 11.
Step 12.
Step 13.
NOTE
The BMPlus2000 has a built-in
automatic test that the contractor can
initiate to test each zone damper, the
indoor fan, the furnace, the air
conditioning system and the LED
indicators.
To start the contractor test, hold the
timer Reset switch for 15 seconds. The
panel energizes the fan {G}ON, and
opens Zone 1 damper.
After approximately 30 seconds, the
Zone 2 damper opens. {You can press
the Timer Reset switch to jump to the
heating test, if fewer than eight zones
are being tested.}
After 30 seconds, the Zone 3 damper
opens.
After 30 seconds, the Zone 4 damper
opens.
After 30 seconds, the Zone 5 damper
opens.
After 30 seconds, the Zone 6 damper
opens.
After 30 seconds, the Zone 7 damper
opens.
After 30 seconds, the Zone 8 damper
opens.
After approximately 30 seconds, the
stage 1(W1) heating is activated, with
all dampers open. The panel will check
whether a gas/electric or heat pump
system was selected using Dip Switch
#2.
After approximately 2 minutes, stage 2
(W2) heating is activated.
After approximately 2 minutes, both
heat stages are terminated.
After approximately 2 minutes, cooling
(Y) is activated.
After approximately 2 minutes, the
cooling system is turned off and the
panel returns to normal operation.
Pressing the System Reset switch at
any time, terminates the Contractor
Test, and returns the panel to normal
operation.
REMEMBER: The BMPlus 2000 is a versatile control
system. There are some terminals that perform different
functions, depending on the setup configuration.
For Example: The “W1/B” terminal on the “SYSTEM”
terminal block, performs two functions.
1. If the BMPlus has been setup to control a Gas
furnace, this terminal is “W1” first stage heat!
2. If the BMPlus has been setup to control a Heat
Pump, this terminal is “B” for a “B” type reversing
Valve!
In a typical Heat Pump application with an “O” type
valve, there should not be any wires connected to
the “W1/B” terminal.
The BMPlus 2000’s advanced control sequence is
programmed to hold a reversing valve in cool or heat
mode, until the control system changes over. In other
words, you will not hear the reversing valve release
after every cooling or heating call. So, if you mistakenly
wire up the supplemental electric heat to the “W1/B”
terminal, it will run continuously, while the panel is in
the heat mode.
For more information on this and other dual function
terminals, read the Technical Bulletin thoroughly or
call the Technical Support Hotline.
If you encounter any problems with your installation, call EWC Technical Support!
10
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-635-8646
E-Mail- info@ewccontrols.com
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