LP-719 Rev. 000 Rel. 000 Date 6.25.20
9
A. What’s in the Box
UNCRATING THE BOILER
- Any claims for damage or shortage in
shipment must be filed immediately against the transportation
company by the consignee.
NOTICE
Part 2 - Before You Start
Remove the boiler and accessory box from the packaging. Take
care to place the boiler and accessories in a safe location prior to
installation to prevent damage to the mechanical connections.
Figure 1 - Included with the Boiler
Included components:
Table 4 - Included with the Boiler
How the Boiler Operates
ELU condensing technology intelligently delivers hydronic heating
while maximizing efficiency. Outlined below are system features and
operation:
Stainless Steel Heat Exchanger
The highly efficient stainless steel heat exchanger is designed to
extract all available heat from the supply line before it is exhausted.
Modulating Combustion System
The combustion system modulates the output of the burner during
operation to match system demand and achieve the control set
point while in operation. The set point can change by internal or
external signals to enhance the overall performance of the system.
Control
The integrated control system monitors the system and regulates fan
1
2
3
4
11
12
9
8
7
6
5
speed to control boiler output. This allows the boiler to deliver only
the amount of heat energy required and nothing more.
The control can be set to monitor outdoor temperature through
an outdoor sensor or through internet weather (with optional WiFi
connection), use an optional room sensor, or use both outdoor
temperature and an optional room sensor to regulate boiler set
point. The system can be further enhanced by installing an indirect
water heater to provide domestic hot water.
The control can regulate the output of multiple boilers through
its cascade system function. The cascade system is capable of
connecting up to eight boilers together in such a way that they
function as one boiler system. This allows for greater turn down
ratios and provides systematic control of the multiple boilers in an
installation to minimize downtime and maximize efficiency.
The cascade system works by establishing one boiler as the master
and the other connected boilers as followers. The master boiler
requires a sensor to provide feedback on set point temperature
in order to adjust heating input from the connected boilers. Each
cascaded boiler will have its own pump to provide maximum flow
and control heat exchanger flow rate.
Text Display and Operational Display Icons
The display allows the user to change system parameters and
monitor system outputs.
Gas Valve
Senses suction from the blower, allowing gas to flow only if powered
and combustion air is flowing.
Integrated Venturi
Controls air and gas flow into the burner.
Burner
The high grade stainless steel burner uses premixed air and gas to
provide a wide range of firing rates.
Spark Ignition
The burner is ignited by applying high voltage through the system
spark electrode. The spark from the electrode ignites mixed gas off
of the burner.
Supply Water Temperature Sensor
This sensor monitors the boiler outlet water temperature (System
Supply). The control adjusts boiler firing rate so the supply
temperature will match the boiler set point.
Return Water Temperature Sensor
This sensor monitors boiler return water temperature (System
Return).
Flue Sensor
Monitors flue temperature and adjusts firing rate.
Temperature and Pressure Gauge
Allows the user to monitor system temperature and pressure.
Electrical field connections with terminal strips
The electrical cover allows easy access to the clearly marked line
voltage and low voltage terminal strips to facilitate wiring the boiler.
Condensate Collection System
This boiler is a high efficiency appliance and will produce condensate.
The condensate collection system has a float switch which monitors
condensate level and prevents condensate from backing up into the
combustion system. Inside the collection system is a built in trap
which seals the combustion system from the connected drain. This
condensate should be neutralized to avoid damage to the drainage
system or piping.
Outdoor Sensor
Monitors outdoor temperature and adjusts unit set point to provide
greater efficiency.
0-10 Volt Input / 4-20 mA Input (with Optional Analog Clip-In
Board, part # 3319457)
Allows the installer to connect a BMS (Building Management System)
to control the boiler.
Condensate Trap
The condensate trap prevents condensates and heat exchanger
exhaust backing up into the cabinet.
Nr.
Quantity
Description
1
1
Condensing Gas Boiler
2
1
Condensate Drain Pipe
3
1
Upper Bracket
4
2
Assembly Screws (Fischer Type SX )
5
1
CH Pressure Relief Valve
6
1
3” CPVC Pipe, 5” Long
7
2 + 2
2” Vent 3” Vent Screen (3” Only - 199 Models)
8
1
Tridicator
9
1
Lower Bracket
10
1
Installation Manual (This Document)
1
User’s Information Manual
1
Connectivity Quick Start Guide
1
LP Conversion Instructions
1
Warranty
1
Programming Guide
11
1
LP Gas Conversion Kit
12
1
Outdoor sensor Kit
13
1
3/4” Cap (Not Included with Combis, and not shown)
