LINE VOLTAGE ELECTRICAL CONNECTIONS
In standard configuration, the Comfort Plus
Hydronic is wired for connection to 240V,
however, the element circuits can also be
connected to 208V. A 208V connection derates
the charging input of the system by 25%. If a
system rated specifically for 208V or 277V is
required, contact the factory. The controls
circuit in the Comfort Plus Hydronic system
MUST be connected to 120V/240V or 120V/
208V. If connecting to 120/208V, contact the
factory for programming information.
The 60 amp breakers located in the electrical
compartment on the Comfort Plus Hydronic
feed the core charging (element) circuits. The
15 amp breaker feeds the controls, blowers, and
pumps circuit. All Comfort Plus Hydronic
systems are factory configured to be field
connected to multiple line voltage circuits. If a
single feed line voltage circuit is desired, an
optional single feed kit is available from the
factory.
To determine the correct wire size required for
each circuit feeding the Comfort Plus Hydronic,
refer to the Specifications (Page A.01) and the
system's identification label (Figure 7) located on
the lower left side of the Comfort Plus Hydronic
system.
Step 1
Remove the electrical panel cover.
Step 2
Route all line voltage wires through a
knockout and into the electrical panel of
the Comfort Plus Hydronic.
Step 3
Make proper field wiring connections to
the Comfort Plus Hydronic breakers.
Refer to the Line Voltage Wiring
Diagrams (Pages A.05-A.07) for more
information on these connections.
To ensure proper operation and safety,
all line voltage circuits must be segre-
gated from low voltage wiring in the
Comfort Plus Hydronic.
To reduce electro magnetic fields
associated with electrical circuits and
to avoid induced voltage on sensors
and electronic devices, the circuit
phases MUST be alternated as shown
in Figure 8.
IMPORTANT
HAZARDOUS VOLTAGE: Risk of electric shock. Can
cause injury or death.
•
DO NOT energize the system until installation is
complete.
•
DO NOT operate the Comfort Plus Hydronic
heating system without the factory supplied
junction box in place. Connections to the primary
loop pump MUST be made inside the junction
box. If installing the optional air handler, the air
handler pump connections MUST also be made
in the junction box.
•
Equipment must be installed by a qualified
technician in compliance with all applicable local,
state, and national codes and regulations.
WARNING
In
st
al
la
ti
on
Comfort Plus Hydronic
Installation
3.06
Comfort Plus Hydronic
Circuit Breakers
L
IN
E
2
L
IN
E
1
L
IN
E
2
L
IN
E
1
CHARGE CIRCUIT #3
CHARGE CIRCUIT #2
CHARGE CIRCUIT #1
CONTROLS CIRCUIT
CHARGE CIRCUIT #4
(MODEL 5130 and 5140 ONLY)
L
IN
E
2
L
IN
E
1
L
IN
E
1
L
IN
E
2
L
IN
E
1
L
IN
E
2
T
o
S
er
v
ic
e
(
B
re
a
k
er
)
P
an
el
NEUTRAL CONNECTION FOR CONTROL CIRCUIT
THIS MUST BE A 120/240V OR 120V/208V CIRCUIT
NEUTRAL
LUG
SAMPLE SYSTEM IDENTIFICATION LABEL
FIGURE 7
CIRCUIT PHASING CONNECTIONS
FIGURE 8
NOTE: The controls
circuit MUST
include a
neutral wire.
