The FT Series Wall Mounted, Combination Boiler
Page 43
4.15 Plumbing Guidelines (continued)
4.15.5 Zoning with circulation
pumps
- In a pump based system, each heating
zone of has its own circulator pump
which runs when the zone demands.
- Each zone thermostat goes to a
controller which
controls the pumps.
Circulation pump
Check valve
Drain valve
Gate valve
Backflow preventer
Pressure Relief Valve
Expansion tank
Air separator
(Diaphragm-type)
Automatic air vent
Anti-scald rated
Mixing Valve
PRIMARY LOOP
CH
SUPPLY
CH RETURN
(SPACE HEATING)
ZONE 1
ZONE 2
ZONE 3
SECONDARY LOOP
(SPACE HEATING)
TO DR
AIN
Make-Up Water
TO DR
AIN
DHW OUTLET
DHW INLET
1
1/4
”
Min
Piping
Do not
exceed
12"
See
Note
Circulation pump
Check valve
Drain valve
Gate valve
Backflow preventer
Pressure Relief Valve
Expansion tank
Air separator
(Diaphragm-type)
Automatic air vent
Anti-scald rated
Mixing Valve
PRIMARY LOOP
CH
SUPPLY
CH RETURN
(SPACE HEATING)
ZONE 1
ZONE 2
ZONE 3
SECONDARY LOOP
(SPACE HEATING)
TO DR
AIN
Make-Up Water
TO DR
AIN
DHW OUTLET
DHW INLET
1
1/4
”
Min
Piping
Do not
exceed
12"
See
Note
1. This piping diagram is meant to show system piping concept only. Installer is responsible for
all equipment and detailing required by local codes.
2. All closely spaced tees shall be 12” (or 4 pipe dia) center to center spacing.
3. A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream
of all closely spaced tees.
4. The minimum pipe size of DHW piping should be 3/4” diameter.
5. Install a minimum of 12 diameters of straight pipe upstream of all circulators.
6. Install a check valve on the return line to the boiler.
7. Manufacturer strongly recommends the use of an anti-scald mixing valve at domestic hot
water outlet (boiler location) to reduce potential for scalding.Contact Manufacturer for
recommended models. Check with local codes.
Auto Fill Valve
and Backflow
Preventer Valves are
NOT included (Field
Supplied).
Содержание FT Series
Страница 49: ...The FT Series Wall Mounted Combination Boiler Page 49 4 21 Control Board Electrical Diagram Control Board...
Страница 50: ...Page 50 4 22 Ladder Diagram F B level Air Pressure Sensor...
Страница 66: ...Page 66 6 2 Fault Tree Analysis 1 Flame detection...
Страница 81: ...Mascot FT Combination Boiler Page 81 Heat Exchanger Tank _ Feature Heat Exchanger Tank FTCW140...
Страница 83: ...Mascot FT Combination Boiler Page 83 Fan Gas Valve _ Feature Blower and Gas Valve FTCW140...
Страница 85: ...The FT Series Wall Mounted Combination Boiler Page 85 FTCW199...
Страница 91: ...The FT Series Wall Mounted Combination Boiler Page 91 Fan Gas Valve _ Feature Fan Gas Valve _ Feature FTCW199...