Part number 550-142-058/0811
WM97+
gas
-
fired
water
boiler
—
Boiler Manual
104
Figure 102
Dimensional data (all dimensions in inches)
Dimensions
LEGEND
1
Boiler supply tapping, 1” NPT.
2
Boiler return tapping, 1” NPT.
3
Control panel, with display and naviga-
tion buttons
4
Electrical entrance openings
5
Vent connection: 3” PVC
6
Pressure/temperature gauge (shipped
loosed)
See Figure 6, page 10 for mounting details
and instructions.
7
Gas connection (note 1) (manual gas
valve shipped loose for field installation)
See page 44 for details and instructions.
8
Drain valve (shipped loose)
See Figure 6, page 10 for mounting details
and instructions.
9
Condensate drain connection (also see
item 14, below)
10
Air connection: 3" PVC
11
Relief valve (shipped loose)
See page 33 for mounting details. Relief
valve mounts on supply pipe off of supply
tee and ¾” street elbow as shown.
12
Boiler drain line / DHW boiler water
return line (if DHW tank is connected
directly to the boiler)
See Figure 7, page 11 for details and in-
structions for usage.
13
DHW boiler water supply line (if DHW
tank is connected directly to the boiler)
See Figure 7, page 11 for details and in-
structions for usage.
14
Condensate trap and flexible drain line
(shipped loose)
See page 43 for details and instructions.
The condensate drain hose or pipe must
connect to the flexible line supplied with
the boiler to ensure the trap assembly can
be removed easily.
TOP
FRONT
RIGHT
TOP
(shows field-installed components)
BOTTOM
(shows field-installed components)