Weil-McLain WM97+110, Руководство пользователя

Страница: 56 / 132

Part number 550-142-085/0712
WM97+
gas
-
fired water boiler
— Boiler Manual
– 56 –
Legend — Figure 63 The boiler internal primary/secondary by-pass valve must be CLOSED
for multiple boiler installations piped as shown in this manual. This allows the
boiler internal circulator to circulator water to and from the manifolds.
1
Flow/check valve (integral to each boiler internal circulator)
2
Isolation valves (when used)
3
Cap
4
Easy-Fit® Manifold (supply) — layout and size per page 55
5
Easy-Fit® Manifold (return) — layout and size per page 55
6
Primary circulator
7
Expansion tank (diaphragm type)
8
System air eliminator
9
System automatic air vent
10
Pressure reducing valve
11
Check valve or backflow preventer, as required by applicable codes
12
Isolation valve
13
Cold water supply
14
Supply water temperature control (when used)
15
Low water cutoff (when used) (place above primary header)
16
Water flow switch (when used)
17
Internal boiler circulator
18
System supply
19
System return
20
Boiler P/T gauge, relief valve and discharge piping, installed per
WM97+ Boiler Manualore than 3 feet) from boiler connection
tees.
24
DHW connections — pipe with drain valve and cap as shown
on page 13 if boiler is not directly connected to a DHW unit. For
CWH installations, refer to the CWH manual for piping the CWH
to the WM97+ boiler bottom connections.
Figure 63
Piping schematic — typical piping for multiple WM97+ boilers, using Weil-McLain Easy-Fit manifolds (shown
using WM97+155 boilers — adjust boiler connections as required for other boiler models)
Multiple boiler installations
(continued)