
H B X E C O - 0 5 5 0 G e o t h e r m a l C o n t r o l
V e r s i o n 2 . 0 0
© HBX Control Systems Inc. 2018
Page 3
1, 2: Demand Signal 1
Apply heat demand from a dry contact, or 24VAC.
3, 4: Demand Signal 2
Apply cool demand from a dry contact, or 24VAC.
5, 6: Heat Pump 1
Heat Pump 1 Output.
Sensor Inputs
7, 10:
Hot Tank temperature in dual tank mode, or
Tank Temperature in single tank mode.
8, 10:
Cold Tank temperature. If the cold tank sensor
is not connected, the control assumes single tank
operation.If connected, the control will operate in
dual tank mode.
9, 10:
Outdoor temperature.
14, 15: Relay 1
This relay is generally a second Heat Pump, or can be
used as System Pump output.
16, 17: Relay 2
Generally used as a Third stage or Backup Boiler.
18, 19: Relay 3
Used as a Reversing Valve and/or 3 way diverting
valves.
(Relays 1, 2 and 3 are dry contacts and rated for a
maximum of 5 Amps.)
5 A
RL
1
RL
15
14
1
5 A
RL
2
RL
17
16
2
HBX
GR
120
13
N
L
12
11
1
1
TM
3
2
8
TM TM
7
9 10
BL
1
BL
6
5
1
2A
1-10v
+
-
DO NOT
CONNECT
POWER
HERE
1
2
DS
1
2
2
DS DS
1
3
4
DO NOT
CONNECT
POWER
HERE
DS
5 A
RL
2
RL
19
18
2
ECO-0550
Central Processing Unit
Demand Input 1
Demand Input 2
Heat Pump Contacts
Sensor Inputs
Relay 3
Relay 2
Relay 1
Supply Power 120 VAC
WIRING AND INSTALLATION
Wiring
All signal wiring must be with a minimum of 18AWG wire at a maximum of 500ft.
Installation
The ECO-0550 is designed to be wall mounted or installed in a separate
electrical enclosure. The unit should be mounted inside and protected from
falling water and high humidity conditions. With all the covers in place it is
designed to protect any individual from accidental electrical shock. It is not
suitable for installation in hazardous locations and should not be placed
close to any electromagnetic fields.
•
Identify the four mounting holes on the ECO-0550, mark on the wall the
desired location of mounting.
•
Predrill, anchor and fasten four screws for mounting.
•
Hang ECO-0550 and fasten tight to desired locations
•
Complete wiring connections in accordance with terminal locations.
Mounting Holes
24VAC
MAX