9
LP- 428 REV. 9.2.14
Control
– The integrated control system monitors the system and regulates fan speed, controlling the output of each boiler and staging
the individual heating circuits to maximize overall efficiency. This allows the Mod Con to deliver only the amount of heat energy required
and nothing more. The system can be further enhanced by installing with 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 cascade system sensor and a cascade pump in addition to its own boiler pump. Each of the follower boilers has an individual
pump.
System Display and Operational LED Light Indicators
– The display allows the user to change the 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 (1000 Models) or Swirl Plate (1700 Models)
– Controls air and gas flow into the burner.
Burner
– Constructed of high grade stainless steel, the burner uses premixed air and gas fuel to provide a wide range of firing rates.
Spark Ignition
– The burner is ignited by applying high voltage through the system spark electrode. This causes the spark from the
electrode to ignite mixed gas from the burner.
Supply Water Temperature Sensor
– This sensor monitors the boiler outlet water temperature (System Supply). The control adjusts
the boiler firing rate so the supply temperature will match the boiler set point.
Return Water Temperature Sensor
– This sensor monitors the boiler return water temperature (System Return).
System Sensor
– This sensor is mounted in the boiler common piping and monitors the water temperature of the outlet of both boilers
simultaneously. The master boiler uses this sensor as its primary feedback to control the outlet water temperature of a cascaded boiler
system.
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 line voltage and low voltage
terminals strips which are clearly marked to facilitate wiring of the boiler.
Condensation Collection System
– This boiler is a high efficiency appliance, therefore the boiler will produce condensate. The
collection system has a float switch which monitors the condensation level and prevents condensation from backing up into the
combustion system. Inside the collection system there 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.
Flow Protection
– The optional flow switch is designed to protect the boiler in the event of low flow conditions. The boiler control will
also monitor flow through the heat exchanger by monitoring the return and supply sensors and will shut down the burner before
overheating occurs.
Outdoor Sensor
– This sensor monitors outdoor temperature. Data from this sensor is monitored by the control, which adjusts the unit
set point to provide greater efficiency.
Indirect Tank Sensor
(optional)
– Monitors storage tank temperature.
C. OPTIONAL EQUIPMENT
Below is a list of optional equipment available from HTP. These additional options may be purchased through your HTP distributor.
Remote System Sensor (Part # 7250P-324)
Indirect Tank Sensor (Part # 7250P-325)
6” Stainless Steel Outside Termination Vent Kit (V3000)
High and Low Gas Pressure Switch Kit with Manual Reset (Part # 7350P-600) (Two (2) are required)
U.L. 353 Compliant Low Water Cut-Off Interface Kit with Manual Reset (Part # 7350P-601) (Two (2) are required)
Alarm System (Part # 7350P-602) (to monitor any failure) (Top Boiler Only)
PC Connection Kit (Part # 7250P-320)
Condensate Neutralizer (Part # 7350P-611)
Caster Kit (Part # 7350P-227)
Flow Switch Kit (Part # 7350P-741) (Two (2) are required)
Содержание MODCON1000
Страница 40: ...40 LP 428 REV 9 2 14 E GAS VALVE Figure 22 Mod Con 1000 Gas Valve ...
Страница 46: ...46 LP 428 REV 9 2 14 Figure 25 Figure 26 Cascade Resistor Plug Installation Detail ...
Страница 47: ...47 LP 428 REV 9 2 14 Figure 27 Mod Con Cascade Master and Follower Wiring ...
Страница 48: ...48 LP 428 REV 9 2 14 Figure 28 Mod Con Internal Connection Diagram LP 428 K ...
Страница 70: ...70 LP 428 REV 9 2 14 Figure 31 MOD CON 1000 External Parts Blowout ...
Страница 71: ...71 LP 428 REV 9 2 14 Figure 32 MOD CON 1700 External Parts Blowout ...
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Страница 80: ...80 LP 428 REV 9 2 14 MAINTENANCE NOTES ...