Brute FT Series - Multiple Units Using Zones Pumps and an Indirect for DHW

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4.14.7 Multiple units using
zones pumps and an
indirect for DHW
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 diameters) 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. Install a minimum of 12 diameters of straight pipe upstream of all circulators.
5. Install a check valve on the return line to the boiler.
6. 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.
7. Auto Fill Valve and Backow Preventer Valves are NOT included (Field Supplied).
8. DHW Sensor/Aquastat must connect to LEAD boiler. It is strongly recommended to use a DHW sensor
in case of high DHW set points.
CH RETURN
ZONE 1 ZONE 2 ZONE 3
1
1
/
4
”
1
1
/
2
”
Min
OR
piping
depending on
boiler size
PRIMARY LOOP
(SPACE HEATING)
Do not
exceed
12"
See
Note
SECONDARY LOOP
(SPACE HEATING)
CH
SUPPLY
CH
SUPPLY
CLOSELY
SPACED TEES
CH RETURN
Make-Up Water
DHW
Pump
Indirect DHW Tank
Follower Leader
CASCADE
SYSTEM
SENSOR
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
4.14 Plumbing Guidelines (continued)