Page 27
INSTALLATION
CENTRAL HEATING
Heat meter
Diverter Valve
(not mid position)
CH flow to dwelling
CH return from dwelling
Heat meter
Diverter Valve
(not mid position)
CH flow to dwelling
CH return from dwelling
Pump position to overcome pressure loss on central heating circuit – no additional requirement for system expansion or excess pressure
District
supply
District
return
District
supply
District
return
Pump position to overcome pressure loss on central heating circuit and coil ‐ no additional requirement for system expansion or excess pressure
Coil flow and return
Coil flow and return
CH Bypass
CH Bypass
Zone valve
Zone valve
Heat meter
Diverter Valve
(not mid position)
CH flow to dwelling
CH return from dwelling
Heat meter
Diverter Valve
(not mid position)
CH flow to dwelling
CH return from dwelling
Pump position to overcome pressure loss on central heating circuit – no additional requirement for system expansion or excess pressure
District
supply
District
return
District
supply
District
return
Pump position to overcome pressure loss on central heating circuit and coil ‐ no additional requirement for system expansion or excess pressure
Coil flow and return
Coil flow and return
CH Bypass
CH Bypass
Zone valve
Zone valve
Heat meter
Diverter Valve
(not mid position)
CH flow to dwelling
CH return from dwelling
Pump and plate heat exchanger position to overcome pressure loss and additional expansion requirement on central heating circuit
– no additional requirement for excess district pressure.
District
supply
District
return
Coil flow and return
Plate heat exchanger
Local expansion system
connection required
Heat meter
Diverter Valve
(not mid position)
CH flow to dwelling
CH return from dwelling
Pump and plate heat exchanger position to overcome pressure loss, additional expansion requirement and excess district pressure requirements
District
supply
District
return
Coil flow and return
Plate heat exchanger
Local expansion system
connection required
CH Bypass
CH Bypass
Zone valve
Zone valve
Open vented feed and expansion
Or Temp. filling loop required
Open vented feed and expansion
Or Temp. filling loop required
Heat meter
Diverter Valve
(not mid position)
CH flow to dwelling
CH return from dwelling
Pump and plate heat exchanger position to overcome pressure loss and additional expansion requirement on central heating circuit
– no additional requirement for excess district pressure.
District
supply
District
return
Coil flow and return
Plate heat exchanger
Local expansion system
connection required
Heat meter
Diverter Valve
(not mid position)
CH flow to dwelling
CH return from dwelling
Pump and plate heat exchanger position to overcome pressure loss, additional expansion requirement and excess district pressure requirements
District
supply
District
return
Coil flow and return
Plate heat exchanger
Local expansion system
connection required
CH Bypass
CH Bypass
Zone valve
Zone valve
Open vented feed and expansion
Or Temp. filling loop required
Open vented feed and expansion
Or Temp. filling loop required
District Heating Systems
The diagram opposite shows the BoilerMate SP
installed to a system where the pumped supply
is adequate to overcome the pressure loss of
the BoilerMate SP heat exchanger coil, the
pressure loss over the central heating system
components and all other components fitted to
it. In addition, all the components fitted are able
to withstand the pressure in the district system.
In the diagram opposite, the cold water supply
to the feed and expansion cistern is not shown,
and neither is the overflow pipe which may by
required if the ball valve is fitted to the F & E
cistern. See page 9 for further details. Potentially
a temporary filling loop complying with the
water regulations can be installed.
In this diagram an additional pump is shown
fitted because the pressure loss in the central
heating system is too large for the district pump.
The pump is now fitted in the district supply
because the pressure loss over the BoilerMate
SP coil is too large.
Here, the plate heat exchanger has been fitted
because the expansion requirements of the
central heating system are to be handled in the
dwelling rather than the whole system, or the
components in the central heating system are
not capable of withstanding the pressure of the
district heating system.
In this instance, the plate heat exchanger
provides a full pressure break between the
district heating system and the dwelling system.
The dwelling system will need to cater for
expansion and circulation requirements. This
may be used where excessive district heating
pressure occurs.
Water meter
Heat meter
District
fl
ow
Cold water
District return
Programmer
F&E Cistern
DHW Controller
DHW Pump
Room thermostat
Flow sensor
Cylinder
thermostat
Back up immersion heater
Cold water to dwelling
DHW to dwelling
CH
fl
ow to dwelling
CH return from dwelling
Boilermate stainless
for District
Hea�ng
Coil return
connec�on
Zone valve
DHW 24 Plate PHE
Diverter Valve
(not mid
posi�on
)
Summary of Contents for BOILERMATE OV PP
Page 47: ...Page 47 APPENDIX APPENDIX B ...
