Principle Parts - Lochinvar EcoShield SHW60-325CE Installation, Commissioning And Maintenance Instructions

2.0

PRINCIPLE PARTS

ITEM DESCRIPTION
1 Access cover - front
2 Air intake adapter
3 Air pressure switch
4 Air shroud
5 Fan
6 Burner (not shown)
7 Condensate drain connection
8 Control module
9 Electronic display
10 Flame inspection window
11 Flame sense electrode
12 Flue gas sensor
13 Gas connection pipe
14 Gas valve
15 Heat exchanger access cover
Heat exchanger inlet temperature
16
sensor
Heat exchanger outlet temperature
17
sensor
18 High limit sensor
19 Ignition electrode
20 Mains voltage junction box
21 Low voltage connection board
Low voltage wiring connections
22
(knockouts)
Mains voltage wiring connections
23
(knockouts)
24 Pump
25 Pump relay
26 Stainless steel heat exchanger
27 Tank sensor
28 Top panel
29 Flue pipe adapter
30 Venturi
31 Water heater drain valve
32 Water inlet
33 Water outlet
TABLE 2.1
FUNCTION
Provides access to the gas train and the heat exchanger.
Allows for the connection of the air intake pipe to the water heater.
The air pressure switch detects blocked inlet conditions.
The air shroud controls air and gas flow into the burner.
The fan pulls in air and gas through the venturi. Air and gas mix inside the fan and are pushed
into the burner, where they burn inside the combustion chamber.
Made with metal fibre and stainless steel construction, the burner uses pre-mixed air and gas and
provides a wide range of firing rates.
Connects the condensate drain line to a ½" PVC union.
The control responds to internal and external signals and controls the fan, gas valve, and pumps
to meet the demand.
The electronic display consists of 7 buttons and a dual line 32-character liquid crystal display.
The quartz glass window provides a view of the burner surface and flame.
Used by the control module to detect the presence of burner flame.
This sensor monitors the flue gas exit temperature. The control module will modulate and shut
down the water heater if the flue gas temperature gets too hot. This protects the flue pipe from
overheating.
Threaded pipe connection, ½", ¾", or 1", depending on the model. This pipe should be connected
to the incoming gas supply for the purpose of delivering gas to the water heater.
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.
Allows access to the combustion side of the heat exchanger coils.
This sensor monitors the inlet water temperature to the heat exchanger.
This sensor monitors the heat exchanger outlet water temperature.
Device that monitors the outlet water temperature. If the temperature exceeds its setting, it will
break the control circuit, shutting the water heater down.
Provides direct spark for igniting the burner.
The junction box contains the connection points for the mains voltage power and all pumps.
The connection board is used to connect external low voltage devices.
Conduit connection points for the low voltage connection board.
Conduit connection points for the mains voltage junction box.
Circulates water between the storage vessel and heat exchanger.
Switches power to the pump.
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.
Used by the control to monitor the temperature of the storage vessel.
Removable panel to gain access to the internal components.
Allows for the connection of the flue system to the water heater.
The venturi controls air and gas flow into the burner.
Location from which the water heater can be drained.
BSP water connection that returns water from the system to the heat exchanger, either 1 ½" or 2",
depending on the model.
BSP water connection that supplies hot water to the system, either 1 ½" or 2", depending on the
model.
THE ECOSHIELD WATER HEATER - HOW IT WORKS...
5