Enertech Global, LLC
16
WS Rev. E Models
Installation and Operations Manual
Typical Storage Tank Piping For Radiant Floor Heating
The following drawings indicate typical GSHP connections.
Please refer to product dimensional drawings for actual fitting
and port locations
APSMA Pump Sharing Module
The pump sharing module, part number APSMA, is designed
to allow two units to share one flow center. With the APSMA
module, either unit can energize the pump(s). Connect the
units and flow center as shown in APSMA Module Layout
Diagram, below. The APSMA Module Wiring Schematic
provides a layout of the board. The module must be mounted
in a NEMA enclosure or inside the unit control box. Local code
supersedes any recommendations in this document.
+
-
DC
Bridge
LED
Diode
RY1
24VAC input
from unit #1
+
-
Diode
RY2
24VAC input
from unit #2
RY1
RY2
240VAC input
240VAC to pump(s)
24VAC 24VAC
Figure 1: Board Layout
Figure 2: Board Schematic
240V IN 240V OUT
Relay
Relay
240VAC
Power Source
240VAC
to Pump(s)
24VAC
connection
to unit #2
(Y1 & C From Thermostat)
24VAC
connection
to unit #1
(Y1 & C From Thermostat)
APSMA Module Layout
APSMA Module Wiring Schematic
Section 5: Unit Piping Installation
Ra
di
an
t I
nf
lo
or
Zon
e 1
&
2
Shutoff
Valves
Out (Load Loop)
Check Valves Installed
Storage
Tank
In (Load Loop)
Water to Water
Heat Pump