Lochinvar HERALD HCB116CE, Руководство по установке

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7
3.0 PRINCIPAL PARTS
ITEM DESCRIPTION FUNCTION NOTE
1
Stainless steel heat
exchanger
Allows water to flow through specially designed coils for maximum heat transfer, while providing protection
against flue gas corrosion. The coils are encased in a jacket that contains the combustion process.
Not Shown in 3.1.2
2
Heat exchanger access
cover
Allows access to the combustion side of the heat exchanger coils.
Not Shown in 3.1.2
3 Fan
The fan pulls in air and gas through the venturi (item 5). Air and gas mix inside the fan and are pushed into
the burner, where they burn inside the combustion chamber. Not Shown in 3.1.2
4 Gas valve
The gas valve senses the negative pressure created by the fan, allowing gas to flow only if the gas valve is
powered and combustion air is flowing. Not Shown in 3.1.2
5 Venturi The venturi controls air and gas flow into the burner.
Not Shown in 3.1.2
6 Flue gas sensor
This sensor monitors the flue gas exit temperature. The control module will modulate and shut down the boiler
if the flue gas temperature gets too hot. This protects the flue pipe from overheating.
7
Boiler outlet temperature
sensor
This sensor monitors boiler outlet water temperature.
Not Shown in 3.1.2
8
Boiler inlet temperature
sensor
This sensor monitors return water temperature.
Not Shown in 3.1.2
9 Electronic display The electronic display consists of 7 buttons and a dual line 32-character liquid crystal display.
10 Flue pipe adapter Allows for the connection of the flue system to the boiler.
Not Shown in 3.1.2
11 Burner
Made with metal fibre and stainless steel construction, the burner uses pre-mixed air and gas and provides a
wide range of firing rates.
12 Water outlet BSP water connection that supplies hot water to the system, either 1-1/4" or 2", depending on the model.
13 Water inlet
BSP water connection that returns water from the system to the heat exchanger, either 1-1/4" or 2", depending
on the model.
14 Gas connection pipe
Threaded pipe connection, 1/2 “, 3/4", or 1", depending on the model. This pipe should be connected to the
incoming gas supply for the purpose of delivering gas to the boiler.
15 SMART Control Module
The SMART Control responds to internal and external signals and controls the fan, gas valve, and pumps to
meet the demand.
Not Shown in 3.1.2
16 Manual air vent Designed to remove trapped air from the heat exchanger coils.
Not Shown in 3.1.2
17 Air intake adapter Allows for the connection of the air intake pipe to the boiler.
Not Shown in 3.1.2
18
Mains voltage junction
box
The junction box contains the connection points for the mains voltage power and all pumps.
19 Boiler drain port Location from which the heat exchanger can be drained.
20
Low voltage connection
board
The connection board is used to connect external low voltage devices.
21
Low voltage wiring
connections (knockouts)
Conduit connection points for the low voltage connection board.
Not Shown in 3.1.2
22
Condensate drain
connection
Connects the condensate drain line to a 1/2" PVC union.
23 Access cover - front Provides access to the gas train and the heat exchanger.
24 Ignition electrode Provides direct spark for igniting the burner.
Not Shown in 3.1.2
25 Flame inspection window The quartz glass window provides a view of the burner surface and flame.
Not Shown in 3.1.2
26 Gas shutoff valve Manual valve used to isolate the gas valve from the gas supply.
Not Shown in 3.1.2
27 High limit sensor
Device that monitors the outlet water temperature. If the temperature exceeds its setting, it will break the
control circuit, shutting the boiler down.
Not Shown in 3.1.2
28 Flame sense electrode Used by the control module to detect the presence of burner flame.
29
Mains voltage wiring
connections (knockouts)
Conduit connection points for the mains voltage junction box
Not Shown in 3.1.2
30 Top panel Removable panel to gain access to the internal components.
31 Power switch Turns 230 VAC ON/OFF to the boiler.
32 Levelling legs
Used to allow the heat exchanger to be levelled. This is needed for the proper draining of the condensate
from the combustion chamber Not Shown in 3.1.2
3.1.1 P
RINCIPLE PARTS
L
IST
,
TO BE USED IN CONJUNCTION WITH
3.1.2