Installation Instructions

5
Figure 12
12. Route the freeze thermostat wires through the U-clip on
the hydronic top assembly and down in front of the
control panel. Snap the plastic male pin connector into
the plastic female pin connector located on the outside
front surface of the control panel (Figure 13).
U-CLIP
PLASTIC
CONNECTO
R
VALVE
Figure 13
13. If the black valve motor leads are not accessible from the
valve housing, remove the valve cover. Connect the
supplied valve wire harness leads to the two valve motor
leads (not the end switch leads) using the supplied wire
nuts (Figure 14). The fiber washer and strain relief
supplied with the valve harness must be located in the
valve motor enclosure after assembly. Replace the valve
cover.
N.O. YL
N.C. BL
B
A
Motor
Wire Nuts
Return To
Water System
From
Heat
Coil
Control Cord/Plug
*
* Connect YL for Normally Open Valves.
Connect BL for Normally Closed Valves
Figure 14
14. Using the two remaining wire nuts, connect the wires
from the chassis wire harness to valve harness.
Connect one of the BK wires from the valve to BK wire
from the chassis.
For normally open valves, connect the YL chassis
harness wire to the second BK wire from the valve.
For normally closed valves, connect the BL chassis
harness wire to the second BK wire from the valve.
15. Cut either the YL or BL wire that is not being used at the
plastic male connector on the control panel.
TWO-WAY VALVE INSTALLATION
When installing two-way valves, the flow direction is from end
“B” as shown in Figure 15.
Prior to soldering the normally closed two-way valve, open
the ports by slowly moving the manual operating lever to the
retaining notch until lever is secured by valve spring. The
lever will reset to the automatic position the first time the
valve is energized.
THREE-WAY VALVE INSTALLATION
When installing three-way diverting valves, end “B” is the
supply to coil and end “A” is the bypass end. The inlet port
is unmarked. Port markings “A” and “B” are located on the
bottom of the valve body (Figure 15).
N.O. YL
N.C. BL
B
A
Motor
Wire Nuts
Control Cord/Plug
End "B"
To Coil
(Normally
Closed)
Coil Assembly
Return
*
* Connect YL for Normally Open Valves.
Connect BL for Normally Closed Valves
Figure 15
NOTE: For Erie Model VT32* (poptop), the three-way valve
is only configured as N.C. to “B” port. For N.O. configura-
tion to the coil, simply turn the valve around.
Prior to soldering the normally closed 3-way valve, open both
ports by slowly moving manual operating lever to retaining
notch until lever is secured by valve spring.
Flow valve and tubing is to be installed so that it does not
restrict removal of the chassis from the sleeve for service.
SOLDERING THE VALVES
Solder the flow valve and other necessary components in line
with the plumbing rising from the floor or wall. Do not place
the components inside the hydronic top assembly (Figure
16).