User Guide

PA03 – 3
Tb - Ts (°F)
Ts (°F)
0.0
0.2
1.00
0.8
0.60
10 30 50
70
90
Figure 2
10
15
20
25
Flow Ratio
20
40 60 80
0.1
0.3
0.70
0.9
Figure 3
Nominal Pipe
Diameter (inches)
TACO
Pump
This table assumes there are 5 feet of pipe, 4 elbows, and 4 branch tees of the listed diameter.
Balancing valve is assumed to be a ball valve. The approximate Cv value is provided in order
to allow for proper balancing device. Valve characteristics may vary for the same size and type
of ball valve from manufacturer to manufacturer.
Balancing
Valve C v
Balancing Valv e
Position (% open)
Design Injection
Flow Rate (US GPM)
20
30
25
40
40
2
0012
0012
0010
0010
0010
0010
007
007
007
007
006
2
1
1
1
1.5
1
0.75
0.75
0.5
1.25
34.2
18.2
28.8
19.8
10.8
10.8
10.4
6.9
15
5.76
36
30
50
50
100
50
40
40
40
100
30
16
14
12
9
7
8
4
003
0.5
2.4
30
1.5
2
003
0.5
4.5
40
3
006
0.5
4.5
40
0.50
0.40
∆
OPERATION
Power Up and Heat Request
Whenever the control is powered up, the green PWR LED
turns on.The 00-VR starts operating once a heat request sig-
nal is present at the Heat Request (Ht Req) terminals.A heat
request signal may be provided by external end switches from
zone valves or ZVC/SR Zone Controls, applying a dry contact
closure or a powered 24 V (ac) signal across the Ht Req ter-
minals. If end switches or switching relays are not available, a
jumper must be installed to provide a heat request. Once a
heat request is present, the HEAT REQ LED turns on.
Maximum System Supply Temperature (DIP switch 1 & 2)
The 00-VR has a maximum supply function used to set a maximum supply water target
temperature. The maximum temperature is selected using DIP switches 1 & 2. Select
the desired Maximum System Supply temperature based on the DIP switch settings
shown. If the actual supply water temperature approaches the maximum system supply,
the control reduces the speed of the injection pump and the reduced output (RED.
OUT) LED is turned on.This function may be disabled by setting the DIP switches 1 & 2
to off.
Minimum Boiler Return Temperature (DIP switch 3)
The 00-VR includes a boiler protection function which minimizes low temperatures back to the
boiler. Whenever the boiler sensor is installed and a heat request is present, the 00-VR monitors
the boiler return temperature and backs off the pump speed when the return temperature is near
the minimum setting. The minimum setting is selected via the DIP switch 3. When the switch is
turned on, the minimum temperature is set to 120°F and when the DIP is turned off the minimum
is 135°F.When using low temperature boilers such as condensing or electric, the boiler minimum
temperature may be disabled by powering up the control without a boiler return sensor connected.
120 V (ac) and
System Pump
to junction box
EndSwitch
Outdoor Sensor
Supply
Sensor
Boiler Return
Sensor
Power: 120 V +/- 10%
900 VA 60 Hz
Var. Speed: 120 V
(ac) 2.4 A, 1/6 hp
Pmp: 120 V (ac) 5 A
1/6 hp
VS
Cap (936 Cap (936 Cap (936-
N
H
Made in
Canada
S3 S2 S1
Com
Ht
Req
Ht
Req
PMP
To
ground
12
On Off
110°F
12
On Off
130°F
12
On Off
150°F
12
On Off
None
234
On
Off
120°F 135°F