AM Series Boiler & Water Heater User Manual
CHAPTER 4: INSTALLATION
– PIPING
OMM-0100_E
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GF-146
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11/15/2019
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Figure 4-1: Piping the Relief Valve Discharge
4.9 Low Water Cutoff (LWCO)
A low water cutoff (LWCO) (Figure 4-2) must be installed on the outlet piping of the boiler, and
before any intervening valves (Figure 4-3). When installing such a device, you must consult and
abide by all local codes and regulations in force.
Figure 4-2: Low Water Cutoff (LWCO)
NOTE:
In AM water heater systems configured with the AM Rapid Recovery Skid option, the LWCO
is factory installed as shown in Figure 2-6 of Section 2.5.4.
NOTE:
Use Teflon tape or a suitable pipe joint compound for component and piping connections.
SAFETY RELIEF
VALVE & T&P GAUGE
#1
HOT WATER SUPPLY
OUTLET
RELIEF VALVE DISCHARGE
PIPING (one for each valve
and piped to within 18” (46
cm) of ground)
WATER RETURN
INLET
SAFETY RELIEF
VALVE & T&P GAUGE
#3
SAFETY RELIEF
VALVE & T&P GAUGE
#2
SAFETY RELIEF
VALVE & T&P GAUGE
#4
