PeerlessBoilers PBC-34, Инструкция по установке, эксплуатации и обслуживанию

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A. GENERAL
This appliance is to be wired in accordance with local
codes and regulations as defined by the Authority having
jurisdiction. In the absence of such local codes, the Series
PBC™ boiler is to be wired in accordance with the latest
edition of the National Electrical Code, ANSI/NFPA 70.
B. CUSTOMER CONNECTIONS
1. Electrical knockouts are provided on the top panel of
the boiler to connect supply wiring, circulator wiring
and wiring to various instruments. There are
additional optional knockouts located in the bottom
of the boiler for circulator wiring.
2. Electrical terminals are located in the top right portion
of the unit.
3. Figure 7.2 shows customer connections and wiring
schematic for the Series PBC™ boiler.
a. All Low voltage terminals are on the right terminal
strip.
b. All Line voltage connections are on the left
terminal strip.
c. The orange jumper is to be removed if a 120V
connection to an external LWCO is used. This
connection will disable power to the boiler if the
LWCO is activated and is not meant to power the
external LWCO at this time.
4. An Outdoor Sensor is provided with the Series PBC™
boilers. It must be installed for the unit to operate
properly and to maximize the efficiency of the unit. A
warning message will be displayed on the display of
the Outdoor Sensor is not installed in the default
central heat mode.
a. Connect the sensor to terminals 3 and 4 on the
right hand terminal strip.
b. The sensor should be installed in a location outside
the dwelling that is protected from harsh weather
conditions, such as driving rain and accumulated
snow, and not exposed to direct sunlight.
C. INTERNAL WIRING
Figure 7.2 also shows all internal wiring and sensors for
Series PBC™ boilers.
1. User Interface : The user interface, 975LB Display, is
attached to the front of the electrical panel and is
accessible through the front panel. This interface
allows users and installer to access information on the
boiler operation and change settings on the control.
(See Section 8 for more information).
2. Return Sensors: : This component, located on the right
side of the Combination Hydronic Block (CHB), above
the pump cartridge, monitors the return temperature
inside the boiler loop. The thermistor is a 10 k
Ω
NTC
immersion Sensor with a bayonet style connection.
Only use a factory provided Series PBC™ return
sensor.
3. Dual Supply Sensor: This component is located on
the left side of the boiler attached to the copper
portion of the supply line. There are two 10 k
Ω
NTC
sensors in the sensor body that allows it to function as
the boiler safety limit. The 975 control monitors the
deviation between the two sensor readings. If the
deviation is too large the control will shut down the
boiler. This ensures that the supply temperature is
accurate.
4. Flue Sensor : This thermistor provide flue temperature
information to the control. It is located on the top of
the heat exchanger in the front of the vent outlet. The
sensor uses a quarter turn bayonet connection. Use
care if replacing as the plastic housing can be
damaged.
5. Blocked Vent/Condensate PressureSswitch : This
switch is used to determine if there is a blockage in
the vent system and also if there is a blockage in the
condensate drain line after the condensate trap. A rise
in condensate greater than 3.5" above the pressure
switch tap with open the switch.
6. Service Switch : The service switch interrupts the
power to the Series PBC™ boiler to allow service to
be performed.
7. Flame Sensor : The flame sensor uses the principal of
flame rectification to sense the burner flame. This is
located on the right side of the heat exchanger burner
door.
8. Gas Valve : The gas valve is connected through a
special cord and connector. The PBC-40™ and
PBC-52™ connector is secured with a screw.
ELECTRICAL CONNECTIONS
7. ELECTRICAL CONNECTIONS
Figure 7.1: Figure 7.1: High Temperature Limit
Location