Enertech Global
69
EAV - EME/EMD Rev. A Models
Installation and Operations Manual
**
This panel is wir
ed fr
om the fac
tor
y as a c
ooling only fan c
oil f
or z
one 1. I
f hea
ting and c
ooling is desir
ed f
or the z
one 1 fan c
oil
, make the f
ollo
wing changes:
1. R
emo
ve the t
w
o r
ed wir
es labeled A a
t the first r
ela
y on the lef
t. U
sing a quick
-c
onnec
t junc
tion, plug the t
w
o r
ed wir
es t
ogether
.
2. R
emo
ve the black wir
e and the y
ello
w wir
e fr
om the sec
ond r
ela
y fr
om the lef
t (labeled B). U
sing a quick
-c
onnec
t junc
tion, plug the t
w
o wir
es (one black and one y
ello
w) t
ogether
.
R
G
C
Y
C
R
W
C
R
W
C
R
W
C
R
W
C
R
W
O
------------
ZONE 1 ------------
----
ZONE 2 ----
----
ZONE 3 ----
----
ZONE 4 ----
----
ZONE 5 ----
----
ZONE 6 ----
R
Y
G
FAN
COIL
OC
O
Y1C
Y1
WV HE
AT PUMP
FAN
COIL
ZONE
VA
LVE
REL
AY
FAN
COIL/
RADIANT REL
AY
TR
ANSFORMER A
FAN
COIL
ISOL
ATION
REL
AY 1
FAN
COIL
ISOL
ATION
REL
AY 2
COIL
COIL
COIL
COIL
COIL
COM
COM
COM
NC
NO
NC
NC
NC
NO
NC
NO
NO
NO
FAN
COIL/
RADIANT REL
AY
TR
ANSFORMER B
COIL
COM
NC
NO
NO
NC
HE
AT/
COOL
REL
AY
C
NO
NC
NC
NO
Y2C
Y2
COIL
COM
1
2
Expansion
HI TEMP REL
AY
A**
A**
B**
B**
1
2
3
4
ZON
E 1
1
2
3
4
ZON
E 2
1
2
3
4
ZON
E 3
1
2
3
4
ZONE 4
1
2
3
4
ZONE 5
1
2
3
4
ZON
E 6
2 WIRE ZON
E
VA
LVE
(N
O EN
D SWITCH)
MUST USE JUMPER
TA
C
O
3
W
IR
E
ZO
N
E
VA
LV
E
1
2
3
JUMPER 3 & 4
MOTO
R
EN
D
SW
ITCH
4 WIRE ZONE VALVE
(POWER OPEN,
SELF CLOSIN
G)
ZVC 406 – 4
SIX ZON
E
ZON
E VA
LVE CONTROL
24 VAC
FACTORY
INSTALLED
TRANSFORMER
120 VAC
IN
PUT
WHITE
BLACK
POWER IN
24 VAC
24 VAC
FACTORY
INSTALLED
TRANSFORMER
120 VAC
IN
PUT
WHITE
BLACK
N/
O
COM
N/
C
PUMP EN
D
SW
ITCH
ZON
E 6 PUMP
EN
D SWITCH
T STAT 1
VALVE 1
T STAT 2
VALVE 2
T STAT 3
VALVE 3
T STAT 4
VALVE 4
VALVE 5
T STAT 6
VALVE 6
POWER
LED
IN
DICATORS
T STAT 5
ZO
N
E
1
ZO
N
E
2
ZO
N
E
3
ZO
N
E
4
ZO
N
E
5
ZO
N
E
6
IS
O
LA
TE
D
X
X
EN
D SWITC
H
THERMOSTATS (24 VAC)
PR
IO
RI
TY
24 VA
C ZON
E VALVES
PRIORITY
X
X
ZON
E 6
PRIORITY
OFF
ON
FU
SE
5 AMP
R
W
R
W
R
W
R
W
C
C
C
R
W
C
C
FU
SE
5 AMP
R
W
C
A
B
Powere
d from Transforme
r
A
Powe
red from Tr
ansformer
B
Wiring from this terminal strip to the relays and Taco zone controller not shown in this diagram.
Thermostats are factory wired from the Taco zone board to the terminals at the bottom of the page.
Thermostat wiring**
Field wiring is shown as gray shaded areas
OC
O
Y1C
Y1
Y2C
Y2
1
2
Expansion Module Connections***
***Expansion module provides an additional fan coil zone and an addtiional 5 radiant zones. Connect terminals from main module to the same terminals in the expansion module. If main module has been modified to allow heating and cooling in zone 1, the expansion module must also be modified.
R
G
C
Y1
O
W
C
W
G
Y1
R
Heat Pump Thermostat
Fan Coil
Optional field installed relay if fan coil will have backup electric heat
3
4
U
se these t
erminals
to enable sy
st
em
pump (see piping diagr
ams).*
*T
hese c
on
tac
ts will close with a call fr
om
an
y ther
mosta
t. F
or c
onstan
t speed pump
,
use these c
on
tac
ts t
o po
w
er the pump
when ther
e is a h
tg/clg call (br
eak the
“L
”
t
er
minal f
or a 115V pump
). F
or v
ar
iable
speed pump
, use these c
on
tac
ts t
o enable
the pump (t
ypically a c
on
tac
t closur
e will
“
tell
” the pump t
o star
t modula
ting).
Field wiring is shown as gray shaded areas
Section 8: Field Wiring
Diagr
am HT
GCL
G-1
:
Hea
ting
/Cooling
One F
an Coil (Cooling or
Hea
ting & Cooling)
Up t
o 5 Radian
t Hea
ting
Zones***
⚠
C
AU
T
IO
N
⚠
ALL FAN COI
LS
MUS
T BE 2 TONS
OR LARGER FOR
THI
S APPLICATION. I
F AN
Y FAN
COIL IS
SMALLER
THAN 2 TONS, A BUFFER TANK I
S REQUIRED
(US
E DI
AGRAM HTGCLG-7 AND FI
GURE 16C).
HHEAT
HEAT
COOL
EM
indoor Module
⚠
NOTICE
⚠
THE EM UNIT TERMI
NALS
ARE
POLARITY SENS
ITIVE. TERMI
NALS
7,9, & 11 ARE COMMON. ENSURE
THAT OC, Y1C, AND Y
2C ARE
CONNECTED TO COMMON.
Diagram HTGCLG-1: Heating/Cooling - One Fan Coil (Cooling or Heating & Cooling) Up to 5 Radiant
Heating Zones***
Section 8: Field Wiring
