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SECTION 2
EDR-PURE-IOM-230608
8. Also available as an alternative option from the factory
is a 5-port 24VDC Ethernet switch that may be eld DIN
rail mounted inside of the boiler cabinet. For complete
instructions, refer to the Technical Data sheet for 2-45-
315044 prior to installation.
9. Refer to the Hydronic PURE Control™ User Manual for
complete instructions.
` INTEGRATION WITH THE MODSYNC SEQUENCING SYSTEM
Reference the User Manual and Electrical Schematic for
the ModSync Sequencing System. Communication requires
shielded three-wire twisted Belden 3106A or equivalent.
Shield must be grounded at one end only and tied directly to
Earth ground.
` SUPPLER HEADER TEMPERATURE SENSOR
1. A hydronic supply sensor and
(Part # 4-30-000510) is used for temperature control.
This is a 3-wire PT100 RTD with Class B tolerance.
2. This sensor is required for any multiple boiler
installation utilizing the integrated sequencing (lead/
lag) capabilities.
3. This sensor is required for single boiler installations with
primary-secondary piping arrangements to monitor the
secondary (system) loop.
4. The sensor monitors hydronic loop temperature in
the common supply piping as a process variable for
sequencing and modulation purposes. The control
uses this information when comparing actual loop
temperature to setpoint.
5. It is eld installed downstream of the boilers in the
common supply water header. The well must be directly
in the path of ow and not isolated with a valve to
provide an accurate temperature reading. Do not install
the supply header temperature sensor in the return
water header.
6. See Figures 4 7 for the proper installation location in
hydronic piping.
7. When extending the wire lead, use 18 to 22awg twisted
3 conductor stranded copper with insulated jacket.
Ensure connections are tight with no shorts. Soldered
and heat shrink tubing connections are recommended.
Never use wire nuts to join lead to extension.
Questions? Please Contact Your Local Manufacturer's Representative
" NPT well
1/2
8. If the System Supply value becomes unavailable across
the Universal Data system, boilers con gured for Lead/
Lag will lack a process variable and will automatically
failsafe to local temperature control operation. For
added redundancy, one or more additional header
sensors may be wired to additional boilers in the Lead/
Lag plant and con gured as Local Network Providers of
System Supply.
9. For complete instructions, refer to the Technical Data
sheet for 4-30-000510 prior to installation.
` OUTDOOR AIR TEMPERATURE SENSOR KIT
1. If outdoor air temperature reset capabilities are to be
utilized, an outdoor air temperature sensor kit (PN 4-30-
000500) is required and eld wired to a boiler. This is a
3-wire PT100 RTD with Class B tolerance.
2. An outdoor air temperature sensor kit is not required if
using xed water temperature operation, or if the boiler
control is receiving an external hydronic setpoint signal
over a communication protocol or analog signal.
3. The sensor must be installed on a north facing exterior
wall, in a location that will not be exposed to direct
sunlight or in uenced by other mechanical equipment.
4. Mount in the vertical position, sensor sheath pointing
downward.
5. When extending the wire lead, use 18 to 22awg twisted
3 conductor stranded copper with insulated jacket.
Ensure connections are tight with no shorts. Soldered
and heat shrink tubing connections are recommended.
Never use wire nuts to join lead to extension.
6. For complete instructions, refer to the Technical Data
sheet for 4-30-000500 prior to installation.
INSTALLATION
2-43
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