EWC Controls ULTRA-TALK 3000 Technical Bulletin page 14

System Wiring
Existing
Boiler with
New HP
System
Y o u m a y h a v e
Communicating Heat Pump but
want to use your Boiler (Hot
Water Coil) as the Auxiliary
backup rather than electric
resistance heat. Connect the
T&T circuit from your boiler
control panel to a field relay
installed inside the Air handler.
Wire as shown to the right.
Note:
You must select a valid
heater kit (HW coil BTU equivalent)
in the Air Handler's "ClimateTalk"
Menu and/or Dip Switches, in order
to achieve the desired airflow!
You must also select a heater kit in
the advanced menu of each Daikin
or Amana thermostat.
Communicating
Furnace with
24v Legacy
Air Conditioner
Four wires are required from the
UT3000 to the Communicating
furnace. Two wires are required
to the 24v air conditioner.
Note:
You must specify the
tonnage of the non-communicating
outdoor unit, inside the Furnace
equipment User Menu, in order to
achieve the correct airflow!
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-635-8646
Install the Relay in the Air Handler and connect the
T&T circuit from your boiler control panel to the
Normally Open contacts on the "field" Relay.
Communicating
OUTDOOR
AIR CONDITIONER
a n e w
or
HEAT PUMP
C
2
1
R
Note: Set the Air Handler Dip Switches for a
valid KW Heater Kit. Typically 5kw - 15kw.
Measure the temperature rise and if needed, adjust the Air Handler
KW setting to achieve the desired temperature rise (Delta T).
For HP applications it is important to use the Air Handler's W1 and Common wires
to control the Hydronic coil! This insures a heat source during Defrost functions.
For non HP applications with a Hydronic coil, you may connect the T & T boiler
circuit direct to the Rh and W1/B terminals of the UT3000. A field relay is unnecessary.
Figure 3d
Non-Communicating
Outdoor
Condensing
Y
C
Figure 3e
UT3000
System
Communicating
AIR HANDLER
Block
White
C
Yellow
Yellow
2
Green
Green
1
Red
R
24v
Unit
"Daikin or
ComfortNet"
Communicating
FURNACE
Y1
C
R
2
1
Wire to T & T Circuit
R1 RELAY
SPDT
W/ 24V. COIL
C
2
1
R
WIRE NUT
Factory 24V
White (W1)
in Air Handler
MBVC*
Existing Wiring
Field Wiring
UT3000
S
Y
S
T
E
M
E-Mail- info@ewccontrols.com
WIRE NUT
Factory 24V
Blue (Common)
in Air Handler
MBVC*
SYSTEM SYSTEM
W2/E
W1/B
O
Y
G
RH
RC
C
RC/RH RC/RH
LINK LINK
C
2
1
R
14