Enertech Global, LLC 24
AV : MD/ME - Rev. A Models
Installaon and Operaons Manual
It is important to follow best pracces for mounng the
system pump to provide long life, serviceability, and the ability
to purge air out of the system. Following are two important
ps for ensuring a good installaon:
• Pumping up is the best way to mount
the pump. If there is air in the system, it will have the best
chance of the air geng though the pump, to the air
separator, and out of the system. If the pump air locks,
turn the pump o and the air will go up out of the
impeller and will be replaced with water. Restart the
pump and it will start pumping. The air will ow to the air
separator. In most cases the air will go through the pump.
Pumping horizontally will work as long as there are small
pockets of air in the system. They will keep moving
around the system with the water to the air separator. If
there are big pockets of air in the system, this will create
problems for horizontal mounng. The pump will cavitate,
lose water ow, overheat, and fail. If the pump does get
air locked, there will need to be a purge port so that the
air can be ushed out of the pump and system. Pumping
down is the poorest way to mount a pump. If there is air
in the system it will get trapped in the pump, causing it to
cavitate, loose water ow, overheat, and fail. The air
creates resistance in the down owing water because the
air wants to ow up. If the pumps loses ow or stops, the
air comes back up the pipe into the impeller, amplifying
the problem. If the pump gets air locked, there will need
to be a purge port so that the air can be ushed out of the
pump and system.
• Motor/Electrical Box: The pump is a wet rotor pump. The
motor sha must be horizontal to keep the bearings
properly lubricated. Do not put the pump on its back or
poinng down (vercal sha) because this orientaon can
cause premature pump failure. In most cases, the
direcon of the electrical box is important to keep any
condensaon out of the windings. Some pumps have a
yellow scker that is on the head of the pump, indicang
the proper direcon.
Piping Diagrams
Not all components are shown, such as union ngs, piping
adapters/reducers, and other components. Schemacs are
designed for illustrang the arrangement/funcon of the
components. Always use best pracces when considering the
locaon of the various components. For example, the
expansion tank must always be on the sucon side of the
pump; check valves (if applicable) must always be on
discharge of the pump.
Order with Unit? Notes
Automac Air Vent, Taco Y 03P017-01BN Install at highest point in system
Boiler Trim Kit Y See Notes
Expansion tank, air separator, automac air vent
included; press. reduc. vlv./backow preventer to be
sourced locally.
1" Taco Geo-Sentry Zone Valve Y ATEBV5C One per radiant manifold and one per fan coil
Turbomax indirect water
heater
Y See Notes
Must be ordered with unit as part of unit as 45 or 65
gallon tank
Brass 3-way valve in cabinet Y 03P016001BN
Two are included with unit. Two more should be or-
dered for hydronic piping.
Double O-ring x 1" FPT (pair) Y AGA5FPT Two sets should be ordered for external ush valves.
Boiler drain valve Included 11080003001 Part of plumbing kit
Strainer Included 08P020-01NN Internal to Indoor Module
System Pump Y See Notes
AGSIPV3A (UPS26-115V const. spd. insul. cabinet w/isol.
vlvs.) OR: AGSIPV7A (UPM-XL var. spd. 230V insulated
cabinet w/isol. vlvs.) + AGFCVSC2A controller)
Dierenal bypass valve Included ADBV4A Internal to Indoor Module
Air Handler(s) Y See Notes Review Enertech price books for MPH Series air handers
Radiant Tubing/Accessories Y See Notes Review Enertech price books for Inoor products
Oponal elect. or gas wtr htr Y N/A Supplied by contractor
Pressure Relief Valve Included N/A Included with indirect water heater
Ball Valves Y N/A Supplied by contractor
Unions, adapters, misc. ngs Y N/A Supplied by contractor
Pressure gauge N/A N/A Included with indirect water heater
Secon 5: Unit Piping
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