Expansion Vessel Sizing; Electrical Supply; External Controls; Remote Enabling - Lochinvar EcoShield SHW60-325CE Installation, Commissioning And Maintenance Instructions

10.3.3

EXPANSION VESSEL SIZING

The following information is based on an inlet pressure of 3.5 bar. If a different inlet pressure is to be used, please
consult BS6700.
V V = S V * e
0.45
Where:
V V = Vessel Volume
S V = System Volume
e = Coefficient of Expansion
Stored
Temp.
C
e
Stored
Temp.
C
e
TABLE 10.1
11.0

ELECTRICAL SUPPLY

Wiring external to the equipment must be installed in accordance with the I.E.E. Regulations and any local
regulations that apply.
Model
SHW45-325CE
SHW60-325CE
SHW85-435CE
SHW115-435CE
SHW145-435CE
TABLE 11.1
A suitably competent person MUST check wiring. Normal supply required is 230 volts AC, single phase,
50 Hz. An isolator with a contact separation of at least 3mm in all poles should be sited close to the
equipment and must only serve that equipment. The double pole switch must be readily accessible under
all conditions.
11.1

EXTERNAL CONTROLS

The Lochinvar EcoShield is compatible with the following control and safety systems:
 Gas pressure switch (e.g. gas booster under pressure/over pressure safety switch)
Auxiliary safety system proving switch (e.g. fan dilution system proving switch)

In addition to this, the Lochinvar EcoShield can give the following signals:
 Volt-free "burner on" (runtime) signal
Volt-free "lock-out" (alarm) signal

24VAC auxiliary device enable signal (e.g. to start fan dilution system)

11.1.1

REMOTE ENABLING

When remote control of an EcoShield water heater is required and controlled using a Building Management
System (B.M.S.) the factory fitted wiring between the low-voltage connection strip and the tank temperature sensor
(See Table 10.1)
30 35 40
0.005 0.006 0.008
65 70 75
0.020 0.023 0.026
COEFFICIENT OF EXPANSION OF WATER AT 3.5 BAR INLET PRESSURE
Normal Supply Voltage External Fuse Rating
230V AC
50 Hz
1 PH
ELECTRICAL SUPPLY REQUIREMENTS
WARNING: THIS APPLIANCE MUST BE EARTHED
45 50 55 60
0.010 0.012 0.015 0.017
80 82 85 90
0.030 0.031 0.033 0.037
Power Consumption
431 W
459 W
10 Amps 646 W
932 W
961 W
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