8 of 8
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.
PC702-1 Two Stage Boiler Reset & DHW Control
Control —
Microprocessor PI control; This is
not a safety (limit) control
.
Packaged weight
— 1.5 lb. (670 g)
Dimensions —
4-3/4” H x 2-7/8” W x 7/8” D (120 x 74 x 22 mm)
Approvals —
CSA
NRTL
/C; Meets ICES & FCC regulations for EMI/RFI.
Ambient conditions
— Indoor use only, 32 to 105
°
F (0 to 40
°
C), < 90% RH non-
condensing.
Power supply
— Class 2, 24 V
±
10% 50/60 Hz 3 VA (Powered by Taco -Exp
Control)
Relays —
24
V
(ac) 5 A 1/6 hp, pilot duty 240 VA
DHW Demand
— 20 to 260 V (ac) 2 VA
Sensors —
NTC thermistor, 10 k
Ω
@ 77
°
F (25
°
C
±
0.2
°
C) ß=3892
included:
Outdoor Sensor M 2036 and Universal Sensor 071.
Factory
Boiler Start
— 35 to 150
°
F (2 to 66
°
C) 70
°
F (21
°
C)
Outdoor Start
—
35 to 85
°
F (2 to 29
°
C) 70
°
F (21
°
C)
Boiler Design
—
70 to 220
°
F (21 to 104
°
C)
190
°
F (88
°
C)
Outdoor Design
—
-60 to 32
°
F (-51 to 0
°
C) 10
°
F (-12
°
C)
Boiler
Minimum
— Off, 80 to 180
°
F (Off, 27 to 82
°
C)
140
°
F (60
°
C)
Differential
— Auto, 2 to 42
°
F (Auto, 1 to 24
°
C)
Auto
Interstage Delay
— 0:30 to 4:00 minutes
2:00 min.
WWSD
— 35 to 100
°
F, Off (2 to 38
°
C, Off)
70
°
F (21
°
C)
Units
—
°
F,
°
C
°
F
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:
905/564-9436.
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.
STEP SIX
• Install the wiring cover over the wiring chamber and secure it with the screw provided.
• Place the front cover on the control and snap it into place.
• It is important to explain the operation of this control within the system to the end user, and to anyone else who may be operating
the system.
Error Messages
Whenever a fault is detected, an error message will be displayed to indicate the location of the problem.
OUTDR
OUTDR
BOIL
BOIL
EEPROM
Read Error
Outdoor
Sensor Short
Circuit
Outdoor
Sensor Open
Circuit
Boiler
Sensor Short
Circuit
Boiler
Sensor Open
Circuit
Refer to the troubleshooting section
for operation details.
Item
1
H1
192A
Power:
24 V
±
10% 50/60 Hz 3 VA
Relays:
120 V (ac) 5 A 1/6 hp pilot 240 VA
Demand:
20 to 260 V (ac) 2 VA
Jul 00
31000265
Press & Hold:
Item, to view settings
, to test
Press & Release:
Item + + to adjust menu
2
3
®
Signal wiring
must be rated
at least 300V
Made in
Canada
PC702-1
4
5
6
7
Com Sup Out
Do not apply power
Rotation On / Of
f
Boiler
Demand
DHW
Demand
Interstage
Delay
Start
Stage
1 1
Stage
2 2
C
US
158033
OUTDR
°
F
1 2
VIEW
Technical Data
