Lochinvar EFW 85 Installation, Commissioning, User And Maintenance Instructions page 36

Pump number Pump type
P1 Grundfos UPMXL GEO 25-125N 180
P2 Wilo Stratos Para Z 25/1-12
Table 4: Pump specifications
Figure 1: Definition of V , the maximum free length between boilers and tanks
L
Equivalent pipe length
Copper pipe 90° bend
R = 1  D
diameter D
mmmm M
421.5 0.5
541.5 0.8
642.0 1.0
762.0 1.2
Table E: Equivalent pipe length
The pipework header between the primary EcoForce water heater circuit and the direct storage vessel must
be sized as per the guidance given in this section. Failure to use the correct size of pipe header will cause
operational problems and potential early failure of the water heater; this will not be covered under the water
heater warranty.
If your installation is outside the scope of this guidance, please contact Lochinvar Technical support before
proceeding with the installation.
Whilst the previous information shows parameters at a ΔT of 12.5 and 16.5, the water heater should always
be installed with a ΔT of 16.5 to achieve the best performance and efficiency out of the water heater.
36
Equivalent pipe length
45° bend
R = 1  D
m
0.3
0.3
0.4
0.5
E93.1804.014
Equivalent pipe length
valve
m
0.1
0.2
0.2
0.3