Submittal Sheet

80
R
EGULATORS
Regulators
Note: Circulating pumps, illustrated in the above applications, circulate tempered water through the system. The aquastat shuts the circulating
pump off if the tempered water exceeds the temperature set point, which is normally ± 5°F (± 2°C) of the tempering valve discharge.
Circulating Pump
Coil
Boiler
Drain
P & T
Relief
Valve
Shut Off
Valve
To System
Thermometer
Check Valve
Cold Supply In
Shut Off
Valve
Return Line
Check
Valve
Aquastat
Tempering Valve
Hot In
Shut Off Valve
C
H
M
Min. 27" (686mm)
Vertical Drop
27"
(686mm)
min
Circulating Pump
Aquastat
Shut Off
Valve
Tempering Valve
Shut Off Valve
Shut Off Valve
Shut Off Valve
Thermometer
Shut Off Valve
Drain
Boiler
Hot
Tempered Supply
To Panel
From Panel
Return
H
C
M
Relief
Valve
Compression
Tank
Fill
Valve
27" (686mm)
min.
Thermostatic Temperature Regulators (continued)
Series 21 Applications
Tankless Water Heater Installation
Panel Heating Installation