3
HWE-SS Elite Installation and Operation Manual
24VAC
• Use a dedicated transformer with at least a 5VA output.
• Bring 24VAC to the two right most terminals on the front of the HWE-SS marked
24VAC and COM.
Wire Colors and Output Lights
• The HWE-SS has a three S.P.S.T. (single-pole single-throw N.O.) relays.
• The HWE-SS has three LED lights that follow the output relays operation.
• The outputs are dry contacts only. They do not source any power.
• The two Blue wires represent Boiler Output relay and the left LED.
• The two Yellow wires represent System Output relay and the middle LED.
• The two White wires represent DHW Output relay and the right LED
Boiler Wiring
• The boiler output relay is N.O. dry contact. It does not source any power.
• Wire the N.O. Blue wires in series with the boiler’s limit circuit.
• Class 1 voltages must use a different wiring conduit and knockout from any Class 2 voltage.
System and DHW Pump Wiring
• The pump output relays are N.O. dry contacts only. They do not source any power. Each
relay can operate up to 1/8 HP pump (1 Amp Inductive load).
• The System output relay (Yellow wires) will energize whenever the outdoor temperature drops
below the Outdoor Cutoff.
• The DHW output relay (White wires) will energize whenever there is a DHW call.
• Class 1 voltages must use a different wiring conduit and knockout from any Class 2 voltage.
Wiring Input Terminals
Heating System Sensor (HSS) Installation (T1, COM)
•
Place the Heating System sensor in the common header where it will register the output of the
boiler before any takeoffs.
• Only use a Standard Brass Tube sensor provided (HT# 904250-00).
• The sensor wires can be extended up to 500' using a shielded 2-conductor cable (Belden #8760 or equivalent
(#18/2)). 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.
• Install a 3/8"ID 1/2"NPT immersion well (HT #350147-00 or equivalent).
• Insert the
supplied sensor probe into the well.
Outdoor Sensor Installation (T2, COM)
• The Outdoor Sensor must be used when Outdoor Reset is selected as the Control
Mode 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 input for the
Outdoor Cutoff only.
• Only use the Heat-Timer outdoor sensor provided (HT# 904220-00).
• Place the sensor in the shade on the north side of the building.
• 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.
• Adhere the Outdoor Label provided to the back of the sensor base.
• Use the Enclosure Base bottom knockout for the conduit. Use the locknut to
hold the conduit and enclosure base together. Screw the cover to the base.
• If screws are used to affix the enclosure to the wall, make sure to seal around the
sensor and wall except from the bottom.
• The sensor wires can be extended up to 500' using shielded 2-conductor cable.
• Cut the shield and do not connect it at the sensor end. Only connect it at the
control end using the outdoor terminal marked
COM
.
• Do not run sensor wires in conduit with line voltage wiring.
T1
T2
T3+
COM
COM
T3- EXT+ EXT- P+ P- COM 24VAC
Input Terminals
System Sensors
{
Enable/Disbale Input
Dry-Contact
{
{
Outdoor Sensor
{
24V
AC power Input
{
DHW Input Dry-Contact
Setback Input Dry-Contact
{
N.O.
S.P.S.T. Output Wiring
120VAC Power Wiring
120VAC Power Source
BLACK
BLACK
Boiler
Output Wiring
N.O.
YELLOW
T1
T2
T3+
COM
COM
T3- EXT+ EXT- P+ P- COM 24VAC
24V
AC
Comm
24VAC Power Wiring
Shield
Shield
System T
emp
Outdoor Sensor
Sensor Wiring
T1
T2
T3+
COM
COM
T3- EXT+ EXT- P+ P- COM 24VAC
Enable/Disable
Wiring
T1
T2
T3+
COM
COM
T3- EXT+ EXT- P+ P- COM 24VAC
Input Terminals
{
{
{
{
{
{
Temp
er
atur
e S
ensor
30°F - 250°F
Temp
er
atur
e S
ensor
30°F - 250°F
Temp
er
atur
e S
ensor
150°F - 950°F
Ex
ter
nal Enable/D
isable
Shut
do
wn
Pr
essur
e,
V
acuum,
and
4 -20mA
24V
A
C P
o
w
er Supply
N.O.
ORANGE
System Pump
Output Wiring
N.O.
VIOLET
DHW Pump
Output Wiring
T1
T2
T3+
COM
COM
T3- EXT+ EXT- P+ P- COM 24VAC
DHW Call
Wiring
T1
T2
T3+
COM
COM
T3- EXT+ EXT- P+ P- COM 24VAC
Setback/Boost
Wiring
N.O.
S.P.S.T. Output Wiring
120VAC Power Wiring
120VAC Power Source
BLACK
BLACK
Boiler
Output Wiring
N.O.
YELLOW
T1
T2
T3+
COM
COM
T3- EXT+ EXT- P+ P- COM 24VAC
24V
AC
Comm
24VAC Power Wiring
Shield
Shield
System T
emp
Outdoor Sensor
Sensor Wiring
T1
T2
T3+
COM
COM
T3- EXT+ EXT- P+ P- COM 24VAC
Enable/Disable
Wiring
T1
T2
T3+
COM
COM
T3- EXT+ EXT- P+ P- COM 24VAC
Input Terminals
{
{
{
{
{
{
Temp
er
atur
e S
ensor
30°F - 250°F
Temp
er
atur
e S
ensor
30°F - 250°F
Temp
er
atur
e S
ensor
150°F - 950°F
Ex
ter
nal Enable/D
isable
Shut
do
wn
Pr
essur
e,
V
acuum,
and
4 -20mA
24V
A
C P
o
w
er Supply
N.O.
ORANGE
System Pump
Output Wiring
N.O.
VIOLET
DHW Pump
Output Wiring
T1
T2
T3+
COM
COM
T3- EXT+ EXT- P+ P- COM 24VAC
DHW Call
Wiring
T1
T2
T3+
COM
COM
T3- EXT+ EXT- P+ P- COM 24VAC
Setback/Boost
Wiring
System Sensor
In Well
Shield
Not connected
Well Locknut
Sensor in Well
Well
Sensor 2-Conductor
Shielded Cable
System
Strap-On
Sensor
Shield
Not connected
Plastic
Tie-Wraps
Around Pipe
Outdoor
Sensor
snap-in
location
Shield
not connected
Conduit
Outdoor Label
on back of Sensor
Outdoor Sensor
Strap-On Sensor
Immersion Sensor
Mounting
screws
location
Seal around
sensor and wall
Outdoor
drip-hole
T1
T2
COM
COM T3+ T3- EXT+ EXT
-
P+ P- COM 24V
AC
System Sensor
Outdoor Sensor
DHW Call
Enable Dry Contact
Setback
Timer
Boiler
SYS
Pump
DHW
Pump
SET
®
C O R P O R A T I O N
R
SYSTEM =
147F
TARGET =
150F
US
C
UL
R
ENCLOSED
ENERGY
MANAGEMENT
EQUIPMENT
LISTED
99RA
120 VAC
Power Source
DHW Pump (White)
System Pump (Y
ellow)
Boiler
(Blue)
Power (Black)
N
L
120 VAC
Power Source
HWE-SS POWERED WITH 120VAC
HWE-SS POWERED WITH 24VAC
T1
T2
COM
COM T3+ T3- EXT+ EXT
-
P+ P- COM 24V
AC
System Sensor
Outdoor Sensor
DHW Call
Enable Dry Contact
Setback
Timer
Boiler
SYS
Pump
DHW
Pump
SET
®
C O R P O R A T I O N
R
SYSTEM =
147F
TARGET =
150F
US
C
UL
R
ENCLOSED
ENERGY
MANAGEMENT
EQUIPMENT
LISTED
99RA
120 VAC
Power Source
DHW Pump (White)
System Pump (Y
ellow)
Boiler
(Blue)
N
L
24VAC
Transformer
120 VAC
Power Source
