12 of 12
PC705-2 Variable Speed Injection Mixing Control
Control —
Microprocessor PID control;
This is not a safety (limit) control.
Packaged weight
— 1.5 lb. (670 g), Enclosure D, Taco green PVC plastic
Dimensions —
4-3/4” H x 2-7/8” W x 1-7/8” D (120 x 74 x 48 mm)
Approvals —
CSA C US, meets ICES & FCC regulations for EMI/RFI.
Ambient conditions
— Indoor use only, 32 to 104
°
F (0 to 40
°
C), < 90% RH non-condensing.
Power supply
— 24 V (ac)
±
10% 50/60 Hz 3 VA
Variable Pump
— 120 V 50/60 Hz 2.4 A 1/6 hp
Pump Relay
— 120 V (ac) 5 A , 1/3 hp, pilot duty 240 VA
Boiler Relay
— 24 V (ac) 5 A 1/6 hp, pilot duty 240 VA
Sensors —
NTC thermistor, 10 kW @77
°
F (25
°
C
±
0.2
°
C) ß=3892
included:
Outdoor Sensor M 2036 and 2 of Universal Sensor 071
Factory
MIX Start
— 35 to 150
°
F (2 to 66
°
C) 70
°
F (21
°
C)
OUTDR Start
— 35 to 85
°
F (2 to 29
°
C) 70
°
F (21
°
C)
MIX DSGN
— 70 to 220
°
F (21 to 104
°
C)
120
°
F (49
°
C)
OUTDR DSGN
— -60 to 32
°
F (-51 to 0
°
C) 10
°
F (-12
°
C)
MIX MAX
— 80 to 225
°
F (27 to 107
°
C)
180
°
F (82
°
C)
BOIL MIN
— OFF, 80 to 180
°
F (OFF, 27 to 82
°
C)
140
°
F (60
°
C)
WWSD —
35 to 100
°
F, OFF (2 to 38
°
C, OFF)
70
°
F (21
°
C)
Units —
°
F,
°
C
°
F
The installer must ensure that this control and its wiring are isolated and/or shielded from strong sources of electromagnetic noise. Conversely, this
Class B digital apparatus complies with Part 15 of the FCC Rules and meets all requirements of the Canadian Interference-Causing Equipment
Regulations. However, if this control does cause harmful interference to radio or television reception, which can be determined by turning the control
off and on, the user is encouraged to try to correct the interference by reorienting or relocating the receiving antenna, relocating the receiver with
respect to this control, and/or connecting the control to a different circuit from that to which the receiver is connected.
Do It Once. Do It Right.
™
TACO, INC.,
1160 Cranston Street, Cranston, RI 02920
Telephone: (401) 942-8000
Fax: (401) 942-2360
TACO (Canada), Ltd.,
6180 Ordan Drive, Mississauga, Ontario L5T 2B3.
Telephone: 905/564-9422
Visit our web site at:
http://www.taco-hvac.com
Copyright 2004 TACO, Inc.
Portions Copyright 2000
tekmar Control Systems Ltd.
tekmar Control Systems Inc.
Error Messages
Whenever a fault is detected, an error message will be displayed to indicate the location of the problem.
Technical Data
EEPROM
Read Error
Mixing Supply
Sensor Short
Circuit
Boiler Sensor
Short Circuit
Outdoor
Sensor Short
Circuit
Mixing Supply
Sensor Open
Circuit
Boiler Sensor
Open Circuit
Outdoor
Sensor Open
Circuit
Refer to the troubleshooting section for operation details.
Start
MIX
Mixing
Demand
% Out
10 30 50 70 90
Start
BOIL
Mixing
Demand
% Out
10 30 50 70 90
Start
OUTDR
Mixing
Demand
% Out
10 30 50 70 90
Start
MIX
Mixing
Demand
% Out
10 30 50 70 90
Start
BOIL
Mixing
Demand
% Out
10 30 50 70 90
Start
OUTDR
Mixing
Demand
% Out
10 30 50 70 90
Start
Mixing
Demand
% Out
10 30 50 70 90
Item
1
H1
194A
Power:
24 V
±
10% 50/60 Hz 3 VA
Var. Pmp:
120 V (ac) 2.4 A 1/6 hp
Boiler:
24 V (ac) 5 A 1/6 hp pilot 240 VA
Pump:
120 V (ac)
5 A 1/3 hp
pilot 240 VA
2
3
Out
Com Sup
Signal wiring
must be rated
at least 300V
PC705-2
C US
Press & Hold:
Item, to view settings
, to test
Press & Release:
Item + + to adjust menu
Boil
4
Do not apply power
Mixing
Demand
Start
% Out
10 30 50 70 90
Made in Canada
VIEW
158033
OUTDR
°
F
