heat-timer DiGi-SPAN Elite Series Assembly, Installation And Operation Instructions page 3

Wiring the System Output to a Pump
MCA Modulating a Voltage Actuator
• The HWE-MOV will control the System Pump up to a maximum output of 1 Amp inductive or 1/8 HP.
• Wire the two Yellow wires to the System Pump circuit.
• The HWE-MOV Elite does not source any output power to the pump. The relay makes when
®
energized to switch the power to the pump.
SYSTEM = 147F
TARGET = 150F
SYS DHW
DECREASE Boiler INCREASE SYSTEM
Pump Pump
Wiring Motorized Valve
• The output relays are dry-contacts only. They do not source any power.
SET
• The Red wire is Common. If the valve has only three wires, it is necessary to wire in a
power source for the valve. One side of the valve power source is connected to the valve
Common, and the other side is connected to the HWE-MOV Red wire Common. Check
C O R P O R A T I O N
wiring instructions for the specific valve before making any connections.
• The White wire connects to the valve Open terminal.
• The Blue wire connects to the valve Close terminal.
Not Used (White)
Wiring Input Terminals
MCA Modulating a Voltage Boiler
Heating System Sensor (HSS) Installation (T1, COM)
®
• Place the Heating System sensor in the common header where it will register the output of the
SYSTEM = 147F
boiler before any takeoffs.
TARGET = 150F
SYS DHW
• Only use the Standard Brass Tube sensor (HT #904250-00) provided.
Boiler
DECREASE INCREASE Pump SYSTEM Pump
• The sensor wires can be extended up to 500' using a shielded 2-conductor cable (Belden
#8760 or equivalent (#18/2)). Do not connect the shield at the sensor but at the control using
SET
the COM terminal.
• Do not run sensor wires in conduit with line voltage wiring.
C O R P O R A T I O N
IMMERSION Heating System Sensor (HSS) Installation
• Install a 3/8"ID 1/2"NPT immersion well (HT #350147-00 or equivalent). Not Used (White)
• Insert the supplied sensor probe into the well.
MCF Modulating a Floating Actuator
Strap-On Heating System Sensor (HSS) Installation
• Strap the sensor to the pipe using metal clamps. Do not over tighten the
clamp.
®
• Strap pipe insulation around the sensor and the pipe.
SYSTEM = 147F
TARGET = 150F
SYS DHW
Boiler
Outdoor Sensor Installation (T2, COM) CLOSE OPEN SYSTEM Pump
Pump
• The Outdoor Sensor must be used when Outdoor Reset is selected from the Startup menu. However, in Set Point
mode, the Outdoor Sensor is optional. When connected in that mode, it will be used as an outdoor cutoff sensor only.
SET
• Only use the Heat-Timer sensor included with the unit.
• Place the sensor in the shade on the north side of the building.
C O R P O R A T I O N
• Be sure the location is away from doors, windows, exhaust fans, vents, or other heat sources.
• The sensor should be mounted approximately 10' feet above ground level.
24VAC
• Mount the sensor clip base to the outside of the building. Insert the sensor in the middle and snap close the clip on the
Transformer
sensor.
• The sensor wires can be extended up to 500' using shielded 2-conductor cable. Do not
ground the shield at the sensor but at the control using the COM terminal.
• Do not run sensor wires in conduit with line voltage wiring.
OPTIONAL - Boiler Return Sensor Installation (T3+, T3-)
• The Boiler Return Sensor is designed to be installed in a 3/8" ID well.
• If sensor is installed as a Strap-On, good contact is required for proper operation. Also,
insulating the sensor with the pipe will ensure sensor will have a more accurate reading.
• Place the sensor in the boiler return piping. The sensor should be located where it will
register the correct return from all loops to boiler
• The sensor wires can be extended up to 500' by splicing with 18 gauge shielded wire.
• The sensor has no polarity. Connect either sensor wire to the front terminal marked T3+,
System Pump
120 VAC
(Yellow)
120 VAC
Power (Black)
Common (Red)
+
Voltage (Blue)
-
R
MC Temperature
Motorized
Valve (Voltage)
System Pump
120 VAC
(Yellow)
120 VAC
Power (Black)
Common (Red)
Voltage (Blue)
- +
R
Modulating
Boiler (Voltage)
System Pump
120 VAC
(Yellow)
120 VAC
Power (Black)
Close (Blue)
Close
Open (White)
Open
Common (Red)
Comm
R
Motorized
Valve (Floating)
120VAC
HWE-MOV Digi-Elite Operation Manual
3
MCF Modulating a Floating Actuator
MCA Modulating a 4-20mA Actuator
SYSTEM =
TARGET =
SYSTEM =
CLOSE Boiler
TARGET =
Boiler
DECREASE INCREASE
SET
Set Point
®
MCA Modulating a 4-20mA Boiler
SYSTEM = 147F
TARGET = 150F
SYS DHW
Boiler
DECREASE INCREASE Pump SYSTEM Pump
SYSTEM =
TARGET =
DECREASE Boiler INCREASE
SET
SET
C O R P O R A T I O N
Determining the proper location for
the Outdoor Sensor is very important.
MCP Modulating a 135Ω Boiler
The HWE-MOV will base the heat on
the outdoor temperature information
it receives from this location. If the
sensor is in the sun, or covered with
SYSTEM =
TARGET =
ice, its reading will be different from the
DECREASE actual Outdoor temperature. Boiler INCREASE
SET
Not Used (White)
System Pump
(Yellow)
®
System Pump
147F
®
(Yellow)
150F
Power (Black)
147F
SYS DHW
OPEN SYSTEM
Pump Pump
150F
Power (Black)
SYS DHW
SYSTEM
Pump Pump
Common (Red) Close (Blue)
SET
4-20mA (White) Open (White)
Common (Red)
R
C O R P O R A T I O N
R
C O R P O R A T I O N
24VAC
Transformer
120VAC
Not Used (Blue)
Input Terminals
System Pump
® (Yellow)
T1 COM T2 COM T3+
147F
150F
Power (Black)
SYS DHW
SYSTEM
Pump Pump
Common (Red)
4-20mA (White)
R
R
C O R P O R A T I O N
ALERT
Not Used (Blue)
Power (Black)
®
Boiler Activation
147F
150F
(Yellow)
SYS DHW
SYSTEM
Pump Pump
Common (Red)
Open (White)
Close (Blue)
R
C O R P O R A T I O N
Outdoor Sensor
Seal around
sensor and wall
Mounting
screws
location
Outdoor
drip-hole
Modulating
Boiler (Voltage)
120 VAC
120 VAC
120 VAC
120 VAC
+
Close
-
Open
Comm
+ -
MC Tempe
30-36VDC
Excitation
Voltage
Outdoor
Motorized
Valve (Floating)
Motorized
Valve 4-20mA
®
SYSTEM =
TARGET =
SYS
120 VAC
Boiler
DECREASE INCREAS Pump
T3- EXT+ EXT- P+ P- COM 24VAC
120 VAC
SET
+ -
- +
30-36VDC
Excitation
Voltage
Modulating
Boiler 4-20mA
120 VAC
Modulating
Boiler (135Ω)
Outdoor
Sensor
snap-in
location
Shield
not connected
Outdoor Label
on back of Sensor
Conduit