Control Setting Notes; Circulators And Piping - Weil-McLain SVF 500 Advanced Manual

setup
EXPRESS SETUP Multi-Boilers — Example E, continued
1

Control Setting Notes

• See Table 8, page 43 for required and optional
settings
• The table follows the general setup required to
achieve the shown systems with shown priorities
• Settings can be made using the WIZARD or by
2
following instructions elsewhere in this manual to
enter the settings manually
• Variable Primary Circulator is operated by an
external controller in the system
• See Figure 38, page 89 on how to use the
control for Primary Valve Control
3

Circulators and Piping

WARNING
!
Provide an external relay and external power to
any circulator if its load rating exceeds 2.2 amps
or 16.4 amps in rush. Failure to comply can result
4
in severe personal injury, death, or substantial
property damage.
WARNING
!
DHW tanks piped using this arrangement need to
be sized for the required load, with a DHW pump
5
selected to provide a flow rate through the boiler
and tank that is within the allowable flow rate
range listed in the table on page 12.
NOTICE
• Follow all sizing guidelines on page 12 Pumps
must provide flow rates required.
6
• Use recognized engineering design practices
throughout
7
8
42
svf series
500/600
• Size Variable Primary System Circulator for
required flow.
• Follow all instructions in this manual for piping
boiler and system
• DHW circulators supplied by installer Size
circulators for required flow.
• DHW can only be supplied when Boiler 2 is
operational in the method shown in Figure 17,
page 41
• See Figure 14, page 28 for setting up an
alternate configuration if DHW is located in
the system as a zone instead of being directly
connected
Suggested DHW
boiler-side pipe
sizing
(for max 0.04 feet head
loss per foot of total
equivalent length, TEL)
advanced manual
1
Flow rate Size Flow rate
1 – 3 9 gpm ¾ 24 – 45 gpm
3 9 – 7 1 gpm 1 45 – 75 gpm
7 1 – 16 gpm 1¼ 75 - 140 gpm
16 – 24 gpm 1½ 140 – 290 gpm
550-100-207/1023
Size
2
2½
3
4