Field Controls S2000 Installation Instructions And Owner's Manual page 4

FIG. 6
Heat Only System and
Steam Humidifier with standard
dry contact Humidistat
Heat only
Thermostat
R W
R W G
Typi ca l
Furnace
FIG. 8
Bryant/Carrier Evolution/Infinity
Variable Speed Heat/Cool System
Program Evolution
Bryant
T-stat as follows:
Evolution
1.Heating airflow
Thermostat To Efficiency mode.
2.Humidifer
A B C D
installed=Yes
3.Humidify with
Fan=Yes
4. Set FAN to
Continuous Mode &
select MEDIUM
speed.
HUM
A B C D
Bryant Evolution
Furnace
2 4 v a c
Common
FIG. 10 Heat Pump System and Steam Humidifier with
Combo Thermostat/Humidistat
and Isolating Relay
Thermostat with built-in
Humidification Control
O R W2 G Y C H
O R W2 G Y
C
Typical Air Handler
Outdoor Heat Pump
not shown for clarity
FIG. 11
S2000 & S2020 Humidifier
Low Voltage Terminal Block
A
G1 R G2 H H
00.3
OHM
CONTROL WIRING SOLUTIONS FOR VARIOUS HVAC SYSTEMS
Additional diagram shown on page 7.
S2000 & S2020 Humidifier
Low Voltage Terminal Block
G1 R G2 H H A
Factory
Jumper will
stay in place
unless a field
installed Air
Proving Device
is used.
Dry Contact
Humidistat
062000 Humidistat
NOTE: An APD or similar device
must be used in this application.
Wire the APD in series with the HH
circuit.
S2000 & S2020 Humidifier
Low Voltage Terminal Block
G1 R G2 H H
DO NOT USE Leave Factory
Jumper in Place
SPST Dry Contact
Isolating Relay
with 24vac Coil
Model APD or
S2000 & S2020 Humidifier
Low Voltage Terminal Block
G1 R G2 H H
A
SPST Dry Contact
Isolating Relay
with 24vac Coil
Model APD or
Disconnect the wires from the "A"
terminals and check the device & circuit
with a reliable ohm meter. Check continuity
when the fan is off and when it is running.
A
Model APD current
sensing switch or
equivalent air proving
device. Dry Contacts Close
when fan is running!
FIG. 7
Typical Thermostat
A R W G Y
R W G Y
Typical Furnace
Outdoor
Temperature
Sensor
FIG. 9
A
A
Typical Heat Pump
Thermostat
O W2
R G Y
O R W2 G Y
Typical Air Handler
Equivalent
Outdoor Heat Pump
not shown for clarity
The latest improvement to the Field Controls humidifiers is the new
"Airflow Interlock Feature" provided on the low voltage terminal
blower on the HVAC system does not operate when called
block. Due to popular demand we have made it easier for you to
A
achieve fail safe lockout in the event the fan or blower on the
HVAC system does not operate when called upon. A high humidity
or airflow proving device is necessary.
REMOVE
You must still determine the type of proving device you want to
FACTORY
JUMPER
use. We recommend our new Model APD switch. But then all you
have to do is connect two low voltage wires from your air proving
device straight to the Steam Humidifier's "A" terminals. No
additional field relays or components are needed.
operating the blower on the HVAC system. If the Steam
Equivalent
Humidifier detects a loss of airflow longer than 1 minute, it will
The Steam Humidifier monitors the airflow circuit anytime it is
shutdown the heating element and stop producing steam to
operating the blower on the HVAC system. If the Steam
Humidifier detects a loss of airflow longer than 1 minute, it will
shutdown the heating element and stop producing eam to avoid
saturating the duct.
You must test the air proving device when you install it to make
sure it will function properly. WARNING: DO NOT perform this test
with the wires connected to the Steam Humidifier. Temporarily
across the normally open contacts with the fan/blower running.
disconnect them. Refer to Figure 11.
fan/blower is running.
1. After installing the air proving device, test for continuity across
the normally open contacts with the fan/blower off. You should
read infinity (no continuity) when the fan/blower is off.
2. Turn on the fan/blower at the thermostat and test for continuity
across the normally open contacts with the fan/blower running.
You should now read continuity (a complete circuit) when the
fan/blower is running.
4
Conventional Heat & Cool System
and Steam Humidifier with 072000
S2000 & S2020 Humidifier
Low Voltage Terminal Block
G1 R G2 H
C
C
OD OD C R
072000 Humidistat
Refer to the 072000 Technical Bulletin
Heat Pump System and Steam Humidifier
with 072000 Humidistat
S2000 & S2020 Humidifier
Low Voltage Terminal Block
G1 R G2
C
C
Outdoor
Temperature
OD OD C
Sensor
072000 Humidistat
Refer to the 072000 Technical Bulletin
H
A
A
REMOVE
FACTORY
JUMPER
Model APD or
Equivalent
H
H
H H
A
A
REMOVE
FACTORY
JUMPER
Model APD or
Equivalent
R H H