Brochure

35
Multi-Unit With Storage
Hot Water Outlet
to Fixtures
Hot Water Return
(Optional)
Cold Water Inlet
Drain
Air Vent *
Tank Circulation **
Y-Strainer
Gas Supply
Storage Tank
Tankless
Water Heater
Tankless
Water Heater
Multi-Unit
Controller
9007675005
(TM-MC01)
C
H
C
H
ULN
Models use
9008300005
(TM-MC-02)
*5 or more units
require a multi-unit
controller
* The air vent is to be installed at the highest location of the system. The diameter of the pipe leading up the air vent is to be no smaller than the piping
throughout the system.
** 1. The tank circulation pump is to be controlled by: Dual-set aquastat (recommended w/ timer) OR Unit Pump Control set to “Storage Tank Mode”
(if the unit model or controller has this function)
** 2. The tank circulation pump is to provide no less than 2 gpm through each activated unit in the system. (Exception: no less than 4 gpm through each
910 series)