6
Typical installation using circulators shown in
1. Figure
1
.
Typical installation using zone valves shown in
2. Figure
2
.
Hot water boilers installed above radiation level must
3.
be provided with low water device either as part of
boiler or at time of boiler installation.
When boiler is connected to heating system utilizing
4.
multiple zoned circulators, each circulator must be
supplied with ow control valve to prevent gravity
circulation.
Reduced pressure back ow preventer must be •
present under provisions required by Environmental
Protection Agency, (EPA).
Bypass piping is an option which gives ability to adjust
5.
supply boiler water temperature to t system or
condition of installation. This method of piping is not
typically required for baseboard heating systems.
CONNECtINg SuppLy ANd REtuRN pIpINg
Method used to protect systems using radiant •
panels and material they are encased in from high
temperature supply water from boiler. See
Figure
3
.
Method used to protect boilers from condensate •
forming due to low temperature return water.
Generally noticed in large converted gravity systems
or other large water volume systems. See
Figure 4
.
Method used to protect boilers from condensate •
forming as well as protecting heating system from
high water temperature. See
Figure 5
.
When using bypass piping, adjust valves A and B until
6.
desired system temperature is obtained.
Bypass loop piping must be same size piping for supply
7.
and return.
WITHIN 6"
Figure 3
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