Circulating Pumps; Storage/Buffer Vessels - Lochinvar EcoForce EF80 Installation, Commissioning, User And Maintenance Instructions

C P
IRCULATING UMPS
In order to ensure the correct flow rates through the water heater, the unit requires a bronze glanded pump sized to overcome the resistance
of the heat exchanger and a primary pipework loop.
The specification of this range of pumps ensures that the bronze body and associated parts in contact with water are suitable for potable use.
They have a "glanded" construction to ensure that any scale in the system does not build up within the pump and cause a resistance that can
lead to a loss of water flow. Glandless (canned rotor) pumps MUST NOT BE USED due to the fact that in hard water areas, scale can build
up within the rotor and failure can occur, not only of the pump but also the heater itself.
The warranty will be invalid if a failure of the heat exchanger occurs due to the installation of a glandless/canned
rotor pump
The pump must not be connected directly to the terminal connections, use a starter relay with overload protection
device between this pump and terminal 25-27
Model
EF80
EF100
EF120
EF150
EF180
10.5.1 System head loss based on a 15k differential
A pump sized for the water heater and primary pipework loop is available as shown below. This pump or a
suitable approved alternative must be installed alongside each EcoForce water heater in order to maintain the
EcoForce warranty.
Model
EF80
EF100
EF120
EF150
EF180
10.5.2 Shunt pump part numbers
The pumps as shown have been sized to provide the correct flow through the water heater and include an allowance for the primary loop which
should be no longer than 14 metres of 54mm tubing plus the following fittings:
6 x 90 Elbows
2 x Unions
2 x Full bore lever ball valves
2 x Tee fittings (cold feed & HWS return)
For longer distances or a greater number of fittings, the pump will have to be resized, contact Lochinvar Technical
Support before proceeding with the installation.
S /B
TORAGE UFFER
EcoForce must be installed with a suitable buffer vessel(s) these are available as ancillary items from Lochinvar and are Glass lined models
up to 2850litres. For more details go to
FLOW
(m /h)
3
3.97
4.77
6.36
7.15
9.54
V
ESSELS
www.lochinvar.ltd.uk
FLOW
(l/s)
1.10
1.325
1.76
1.98
2.65
Pump part number)
LM900140A
LM900141A
LM900141A
LM900140A
LM900141A
Heat Exchanger
Pressure Loss
(Metre-H 0)
2
8.5
6.5
6.5
8.0
5.5
44