Laars mascot ft MFTHW Installation And Operation Instructions Manual page 45

Mascot FT, Heating Only, Boiler
4.14 Plumbing Guidelines
Zoning with circulation pump
- Each heating zone of a pump based system has its own circulator pump which runs when the zone needs it.
- Each zone thermostat goes to a controller which controls the pumps.
Figure 10. Plumbing Diagram using zones and circulation pumps
Gate valve
Expansion tank
(Closed type)
Air separator
Circulation pump
Check valve
Isolation valve
Pressure relief valve
CH SUPPLY
PRIMARY LOOP
(SPACE HEATING)
PRIMARY/SECONDARY
CONNECTION
SECONDARY LOOP (SPACE HEATING)
CH RETURN
Do not exceed 12" apart
ZONE 1
ZONE 2
ZONE 3
FLOOR HEATING
Page 43