18
6.6 Electrical Connection
6.6.1 Electrical Diagrams
M16
BUFFER TANK
J9
U4
U1
U7
NO7
X1.1
UHI
1 2 3 4 5 6 7 8 9 10 11 12 13
1 2 3
4 5 6
7 8 9
10 11 12
1 2
240 VAC 26A INPUT
ETHERNET
DHW SENSOR (R3)
OUTDOOR SENSOR (R1)
FORCED COOLING
CHANGE-OVER
0-10 VDC SIGNAL
0-10 VDC SIGNAL
HEAT PUMP CIRCULATING PUMP (M16)
SCU-1
HEAT PUMP MANAGER
TERMINAL BLOCK 1: LOW VOLTAGE
TERMINAL BLOCK 2: LINE VOLTAGE
HEATING/
COOLING CIRCUIT CIRCULATION PUMP (M13) OPTIONAL
0-10 VDC SIGNAL
2 1
L N G
X1
IMMERSION
HEATER
NO3
N L G
N N N
L L L G G
240V G
DHW TANK
IMMERSION
HEATER
DOMESTIC HOT WATER TANK
(OPTIONAL)
Y3
120 VAC 1A OUTPUT
TWISTED PAIR, SHIELDED WIRE
(SEE NOTE B)
HEAT PUMP OUTDOOR
UNIT
120 VAC 9A INPUT
(SEE NOTE A)
240 VAC 26A INPUT
PE L2 L1
Y1
R W Y G C
AIR HANDLER
NC
NO
C
R W Y G C
THERMOSTAT
120 VAC
24VAC RELAY
NOTES
IMPORTANT!
120 VAC POWER SUPPLIED TO THE HYDROBOX AND THE HEAT PUMP MUST
A.
BE RUN IN PARALLEL AND SUPPLIED FROM THE SAME DEDICATED CIRCUIT
. THIS
SIMULTANEOUSLY TURNS ON BOTH UNITS, ENSURING COMMUNICATIONS SYN
CHING
BETWEEN THE TWO UNIT’S CONTROLLERS. HEAT PUMP MODBUS COMMUNICATION CABLE TO BE 24 AWG SHIELDED TWIS
TED PAIR.
B.
THE RECOMMENDED CABLE IS BELDEN 8332. THE CABLE SHIELD MUST BE
GROUNDED
AT EACH TERMINATION. . CLIP-ON FERRITE TO BE FIELD INSTALLED ON LINE AND NEUTRAL LEADS
OF THE 120V
C.
POWER INPUT TO THE HYDROBOX, INCLUDED IN ACCESSORY BAG WITH THE
HYDROBOX INDOOR UNIT. SOLID FERRITE PART F60.01 TO BE FIELD INSTALLED WITH 2 WRAPS ON
L1 AND L2 LEADS
D.
OF THE 240V POWER INPUT TO THE HEAT PUMP OUTDOOR UNIT, INCLUDED
IN
ACCESSORY BAG WITH THE HEAT PUMP OUTDOOR UNIT. CLIP-ON FERRITE PART F60.02 TO BE FIELD INSTALLED WITH ON LINE
AND NEUTRAL
E.
LEADS OF THE 120V POWER INPUT TO THE HEAT PUMP OUTDOOR UNIT, IN
CLUDED IN
ACCESSORY BAG WITH THE HEAT PUMP OUTDOOR UNIT.
G L1 L2
GND A (+) B (-)
1 2 1 2 1 2 1 2 1 2
DOMESTIC HOT
WATER CIRCULATING
PUMP (M18)
1 2
M18
X2
N0
L N PE
L N GND
J11 Rx-/T- Rx+/T+ GND
DI8
L N G
L N G
L G N
Y2
N L
N L
1 2
1 2
GND L1 L2
240 VAC 30A INPUT
FIELD SUPPLIED AND WIRED 30 AMP 2-POLE CONTACTOR W/ 120VAC COIL
L N
GND
HEATING DEMAND/SMART GRID 2
U2
RETURN LINE DEMAND SENSOR
(R2)
ROUTER-ETHERNET
TOUCH SCREEN DISPLAY
PWR HDMI USB
N28
SD CARD
Micro
SD
DI2
DI1
1 2 1 2
ETHERNET
PWR HDMI USB
GND RX- RX+
1 2 1 2 1 2 1 2 1 2 1 2
FERRITE SEE NOTE C
GND L2 L1
FERRITE F60.01 SEE NOTE D
FERRITE F60.02 SEE NOTE E
HYDROBOX INDOOR UNIT WIRING HUB
HYDROBOX INDOOR UNIT
FACTORY WIRING INSIDE HYDROBOX FIELD WIRING
REV
DATE
ECO
DR BY
APP ENG
APP MFG
APP QA
2
11/1/2021
-
JJH
1
12/31/2020
-
JJK
FORMAT REV 9-1-17
THIS DOCUMENT CONTAINS INFORMATION THAT IS CONFIDENTIAL AND PROPRIETARY TO TACO, INC. (“TACO”). IT IS PROVIDED FOR USE ONLY FOR THE PURPOSES EXPRESSLY STATED BY TACO. BY USING THIS DOCUMENT, YOU AGREE THAT TACO WILL HAVE NO LIABILITY FOR ANY DAMAGES ARISING OUT OF YOUR USE OR MODIFICATION TO IT AND YOU AGREE TO RETURN THE DOCUMENT, TOGETHER WITH ALL COPIES MADE, IMMEDIATELY WHEN REQUESTED BY TACO.
APP QA
INCHES [MM]
06/02/2020
aco
Inc.
1
1
OF
SHEET
JJK
ELECTRICAL SCHEMATIC
SYSTEM M
UNLESS OTHERWISE SPECIFIED:
ANGLES ± 1°
FEATURE CONTROL
SYMBOLS PER
ANSI Y14.5
R.005[.127]TO.015[.38] BREAK SHARP EDGES
125
FINISHES
FRACTIONS±1/64[.397]
.XX ± .02[.508]
.XXX ± .005[.127]
.XXXX ± .0005[.0127]
ECO/Submittal
SCALE
1:2
CI
VOL
DATE
APP ENG
APP MFG
DR BY
PRELIMINARY
REV
D
2
710-1059
SIZE
CRANSTON, R.I.
