7
Wiring Instructions
This section explains how to wire individual devices to the Smart Steam Control 289 . Please refer to technical data table on pg 36
for sensors that are included in the standard packaging of the Smart Steam Control 289 .
Pressure Sensor 089 (Terminals 1, 2, 3)
An optional Pressure Sensor 089 (sold separately) can connect to the 289 to provide staging
for a second steam boiler and to monitor steam pressure up to 15 psi (104 kPa) . The pressure
sensor requires the installation of the following on the steam riser pipe:
• Tee with a ¼"-18 NPT port
• ¼" brass pigtail
• ¼" x
1
⁄
8
" reducing elbow
Thread the 089 into the reducer coupling . The pigtail protects the sensor diaphragm from
premature failure .
• Connect the Red reference voltage wire to terminal 1 .
• Connect the Green pressure signal wire to terminal 2 .
• Connect the Black power common wire to terminal 3 .
FCC ID: 2AHQR-11500A
Contains FCC ID:
2AC7Z-ESP32WROOM32E
QOQMGM12P0
Contains IC ID:
21098-ESPWROOM32E
5123A-MGM12P0
CAN ICES-3 (A)/NMB-3(A)
Class 2 Circuits
Input Power:
115 V (ac) ±10%, 60 Hz, 4 W
Relays:
230 V (ac), 5 A, 1/3 hp
Calls:
24 V (ac) or Short
Operating Temperature:
32°F to 122°F (0°C to 50°C)
Use Copper Conductors Only
Wi-Fi: 802.11b/g/n, 2.4GHz
12
10/100
Ethernet
14
13
Boiler
1
Enable
16
15
Boiler 2
Enable
18
17
Comb
Air Relay
20
19
Power
N
DANGER
DANGER
To Reduce the Risk of Electric
Shock - Do not connect to a
circuit operating at more than
150 volts to ground.
Pour réduire les risques
d'électrocution choc - ne pas
raccorder à un circuit
fonctionnant à plus de 150 V à
la terre.
L
5
4
Outdoor
7
6
Cond
Sensor
9
8
Aux
Sensor
11
10
DHW
2 3
1
Ref In Gnd
Pressure Sens
Call
+
Sensor
H2065A
Smart Steam Control 289
For product literature:
Pour la documentation
du produit:
tekmarControls.com
tektra 1150-02
Designed and assembled
in Canada
N
G
L
T T
T T
L N
G
The Pressure Sensor 089 must be installed downstream of a ¼" steam gauge siphon (pigtail)
to prevent premature failure .
Outdoor Sensor 070 (Terminals 4, 5)
• The 070 can be mounted directly onto a wall with the
wiring entering through the back or bottom of the enclosure .
Do not mount the 070 with the conduit knockout facing
upwards as rain could enter the enclosure and damage
the sensor .
• In order to prevent heat transmitted through the wall from
affecting the sensor reading, it may be necessary to install
an insulating barrier behind the enclosure .
• The 070 should be mounted on a wall which best represents
the heat load on the building (a northern wall for most buildings
and a southern facing wall for buildings with large south
facing glass areas) . The 070 should not be exposed to heat
sources such as ventilation or window openings .
• The 070 should be installed at an elevation above the
ground that will prevent accidental damage or tampering .
Remove
cover by
sliding
upwards
away from
the base.
S1
S1
To wire from
the back,
remove the
knock-out in
the sensor
base.
S1
S1
If using
conduit,
remove the
flexible plug
from the base
bottom.
S1
S1
Attach the
base to
the wall,
soffit or
electrical
box.
