Weil-McLain PLUS LINE PLUS-E017-A/1206 Manual Do Utilizador

Part Number PLUS-E017-A/1206

2

   • Installation   • Start-Up   • Usage   • Maintenance   • Parts

 

Zoning with circulators

1.  Connect  boiler  to  system  as  shown  in  Figure 1

when circulator zoning. The boiler circulator can-

not be used for a zone. It must supply only the boiler

loop.

2.  Install a separate circulator for each zone.
.  Connect  water  heater  (domestic  hot  water)  pip-

ing  to  indirect  storage  water  heater  as  shown  in

Section A of this manual.

 The

PhD Control Module turns off

space heating during water heater heat-

ing.  The  boiler  circulator  will  turn  off,

preventing hot water from circulating to

the system. The flow/check valve shown

on the boiler outlet piping prevents grav-

ity circulation in the boiler loop during

water heater heating.

NOTE 1:

 To  ensure  adequate  flow  rate  through  the

boiler, use the following pipe size on all boiler

loop piping (connecting boiler to and from

the  primary/secondary  connection,  item

21):

-80 or

-10 – 1” or larger.

-1 or

-20 – 1¼” or larger.

-10 – 1½” or larger.

1 

 boiler

2  PLUS-Line indirect water heater
3  Boiler relief valve (see boiler manual for piping details)
4  Boiler relief valve discharge piping (see boiler manual for 

details)

5  Water heater circulator (see page 7 for suggested sizing)
6  Isolation valves
7  System circulator
8  Diaphragm (or bladder) type expansion tank (see page 3 

for piping of closed-type expansion tank, if used)

9  Air separator [with automatic air vent only on systems using 

diaphragm (or bladder) type expansion tank]

10  Flow/check valves (with weighted seats to prevent gravity 

circulation)

11  Purge/drain valves
12  Boiler circulator
14  Zone circulators, typical
20  Make-up water supply
21  Primary/secondary connection

 Use  at  least  the  minimum  piping  size

above and pipe the boiler using only pri-

mary/secondary piping as shown. Failure

to follow these guidelines could result in

system problems.

B1