4
Sensor installed DIP switch 2 = Off DIP switch 2 = On
Setpoint Range
S1
(A)
(C)
(D)
(B)
30 - 75ºF
120 - 165ºF
165 - 210ºF
75 - 120ºF
S2
30ºF
35
40
65
45
50
55
60
70
75ºF
SETPOINT (A)
SETPOINT (C)
SETPOINT (B)
SETPOINT (D)
120ºF
125
130
155
135
140 145
150
160
165ºF
165ºF
170
175
200
180
185 190
195
205
210ºF
75ºF
80
85
110
90
95 100
105
115
120ºF
Sensor installed DIP switch 2 = Off DIP switch 2 = On
Setpoint Range
S3
(B)
(C)
75 - 120ºF
120 - 165ºF
120ºF
125
130
155
135
140 145
150
160
165ºF
75ºF
80
85
110
90
95 100
105
115
120ºF
SETPOINT (B)
SETPOINT (C)
1
On
Off
5°F
10
15
40
20
25
30
35
45
50°F
∆
T
Output Characteristic
The 00-VS bases its output on a linear characteristic or an equal percentage characteristic. The
output characteristic adjustment is made through DIP switch 5.
1
On
Off
0%
100%
100%
% of Flow
Equal Percentage
Heat Output
Terminal Unit Output
Desired
Output
Equal Percentage
Output
0%
100%
100%
% of Flow
Linear
Heat Output
Equal
Percentage
5
On
Off
Linear
5
On
Off
Linear Output (DIP switch 5 = Off)
The linear output characteristic assumes there is a linear rela-
tionship between percent of full flow of the pump and heat output
of the terminal unit. The linear output characteristic is typical of
applications in which the pump is injecting into a constant circu-
lating loop which includes the terminal unit.
Equal Percentage Output (DIP switch 5 = On)
The equal percentage output characteristic assumes there is non-
linear relationship between percent of full flow of the pump and
heat output of the terminal unit. In order to achieve the desired
linear output, the 00-VS provides an equal percentage output.
The equal percentage output characteristic is typical of applica-
tions in which the pump injects directly into the terminal unit.
Setpoint Target (DIP switch 1 = Off)
Once a heat request is present, the 00-VS operates to provide a fixed setpoint target at either the system sensor (S1)
or system sensor (S2) location. In this mode, the 00-VS uses the two sensors and DIP switch 2 in order to select dif-
ferent temperature ranges. Select from the four available temperature ranges listed in the table below, the tempera-
ture range in which the desired setpoint falls within. Then set the desired setpoint using the RANGE dial, where the
first and last temperatures from the selected temperature range corresponds to 1 and 10 respectively on the RANGE
dial, with the temperature increasing in 5ºF increments.
Note: Only one of the sensors (S1 or S2) can be connected in this mode of operation.
Boiler Protection
When either system sensor (S1) or system sensor (S2) is installed for setpoint operation, and the boiler return sensor (S3) is installed
on the return side of the boiler, the 00-VS can protect the boiler against flue gas condensation. When this sensor is installed, the 00-
VS monitors the boiler return temperature. If the boiler return temperature is less than 135ºF, the 00-VS turns on the reduced output
(RED OUT) LED and decreases the speed of the pump.
Note: Boiler protection is not available when configured for Setpoint Target operation and Reverse Acting mode.
Setpoint Operation as a Limit (Boiler Protection with only sensor S3 connected)
Once a heat request is present and only sensor S3 is installed for setpoint operation, the 00-VS operates to provide a limiting setpoint.
The 00-VS operates the variable speed output based on the mixing mode of operation. When configured for direct acting, the 00-VS
adjusts the variable speed output towards full speed as long as the temperature measured at sensor S3 is above the limiting setpoint.
When configured for reverse acting, the 00-VS adjusts the variable speed output towards zero speed as long as the temperature mea-
sured at sensor S3 is above the limiting setpoint.
DIP switch 2 is used to select the different temperature ranges. Select from the two available temperature ranges listed in the table
below, the temperature range in which the desired setpoint falls within. Then set the desired setpoint using the RANGE dial, where
the first and last temperatures from the selected temperature range corresponds to 1 and 10 respectively on the RANGE dial, with the
temperature increasing in 5ºF increments.
∆
T Target (DIP switch 1 = On)
Once a heat request is present, the 00-VS operates to provide a fixed
∆
T target between the
system sensor (S1) and the system sensor (S2). The S1 sensor is the system return sensor and
S2 is the system supply sensor. The fixed
∆
T is set using the RANGE dial, where 5ºF and 50ºF
corresponds to 1 and 10 respectively on the RANGE dial, with the temperature increasing in
5ºF increments.
Note: The S3 sensor is not functional in this mode of operation.
