User Guide
Table Of Contents
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-446-5362 E-Mail- info@ewccontrols.com
4
WARNING: THESE PANELS ARE DESIGNED FOR USE WITH 24VAC. DO NOT USE OTHER VOLTAGES! USE CAUTION TO AVOID ELECTRIC
SHOCK OR EQUIPMENT DAMAGE. ALL WORK SHOULD BE PERFORMED TO LOCAL AND NATIONAL CODES AND ORDINANCES. USE 18
AWG SOLID COPPER, COLOR-CODED, MULTI-CONDUCTOR THERMOSTAT CABLE.
INSTALLATION & WIRING INSTRUCTIONS
Model EWT-3707: Configured for 1 heat 1 cool
(SS1 mode). See thermostat instructions for
Further details.
Figure 2b.
Figure 2d.
HEAT PUMP THERMOSTATS
Figure 2c.
Figure 2a.
HEAT/COOL THERMOSTATS
Mount the panel housing in a suitable/convenient location. Avoid locations that may become wet or
produce condensation. Hot attics are OK. Use the knockouts on the panel housing as wire entryways. Strain relief fittings can be used
if desired. Use care and do not damage the circuit board when removing the knockouts and making wire connections. NOTE: The
24vac power supply should be supplied by a separate transformer. DO NOT use the 24vac power supply from the HVAC system
unless there is no other alternative. 2 zones and 2 dampers is the limit when stealing voltage from the HVAC system.
Mounting hardware is provided.
NOTE: The BMPlus 3000 allows the user to install Heat
Pump thermostats on all zones. You may still use regular
Heat/Cool type thermostats with a Heat Pump system and
use the Staging Timer to energize the auxiliary heat. Doing
so may save more energy. It is advisable to use Heat/Cool
thermostats with 2 stage compressor Heat Pumps.
A single 24vac, 40va
UL Listed transformer
c a n p o w e r t h e
BM P lu s 3 00 0 Ma in
module with up to 12
genuine ND or URD
dampers. See page 9
for more load and
transformer data.
Line
Voltage
TRANSFORMER
24vac, 40 - 75va Max
UL LISTED
BMPlus 3000
Main Module
R - Hot
C - Common
Figure 2 BMPlus 3000 Power wiring
POWER WIRING
Thermostat
Wiring
ZONE1
T’STAT
Y
ONE
ZONE
R
G
O/B
W/E
C
ZONE2
T’STAT
Y
R
G
O/B
W/E
C
ZONE1
T’STAT
Y
ONE
ZONE
R
G
O/B
W/E
C
*
ZONE2
T’STAT
Y
R
G
O/B
W/E
C
24 VAC
T’FORMER
R
C
PROVIDE
MEANS OF
DISCONNECT
MODEL EWT-3707
C
O
B
E
L
W1
W2
Y1
R
G
MODEL EWT-3707
MODEL EWT-3707
C
O
B
E
L
W1
W2
Y1
R
G
MODEL EWT-3707
C
O/B
E
L
W2
Y1
R
G
TOUCHSCREEN THERMOSTAT
MODEL EWT-3102
S1
S2
Y2
C
E
L
W1
W2
Y1
R
G
TOUCHSCREEN THERMOSTAT
MODEL EWT-3102
S1
S2
Y2
Model EWT-3707: Configured for 2 heat 1 cool
heat pump (HP1 mode). See thermostat for
further details.
Model EWC-3102: Configured for 1 heat 1 cool
(SS1 mode). Can be configured for heat pump.
See thermostat instructions for further details.
Model EWC-3102: configured for 2 heat 1 cool
heat pump (HP1 mode). See thermostat instructions
for further details.
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Field installed jumper.
Common wire not required if batteries are used.
*
*
Common wire not required if batteries are used.
*
Common wire not required if batteries are used.
*
Common wire not required if batteries are used.
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