Install Instructions

21
2. Drain Valve:
Install the 3/4" drain valve provided into the drain
tapping on the right hand side of the boiler. Refer to
Figure 6.7 for tapping location.
3. Pressure/Temperature Gauge:
Install the pressure/temperature gauge (theraltimeter)
supplied with the boiler into the 1/2" tapping located
on the right side of the boiler. Refer to Figure 6.7 for
tapping location.
4. Limit Control(s):
a. Install the operating limit control provided in the
3/4" tapping located on the right side of the
boiler. Refer to Figure 6.7 for tapping location.
b. (64-09 through 64-12) Install a high limit control
in the 3/4" tapping located above the operating
limit control. Refer to Figure 6.7 for location.
5. Low Water Cut-off (Level Control)
a. A hot water boiler installed above radiator level
or as required by the authority having jurisdiction
must be provided with a low water cut-off device
either as part of the boiler or at the time of
installation.
b. If a probe-type low water cut-off is used it should
be piped into the boiler supply piping as shown
in Figure 6.8.
Figure 6.7: Water Boiler Tapping Locations
Figure 6.8: Probe Low Water Cut-off Piping
CONTROLS & TRIM