Submittal Sheet

Job __________________________
Designer ______________________
Contact _______________________
www.tekmarcontrols.com 1 of 2 © 2012 C 275 - 01/12
Boiler Control 275
C 275
01/12
Multi-Staging Replaces: 01/11
Submittal
Front View
Side View
2–7/8”
(72 mm)
1/2” Knock-out
(x 5 back) (x 5 bottom)
Mounting Base
CL
1/2”
(13 mm)
7/8”
(23 mm)
6–5/8”
(170 mm)
7–5/8”
(193 mm)
1–7/8” (49 mm)
1/2”
(14 mm)
3/16” (5 mm)
Energy Saving Features
------------
------------
Outdoor temperature reset
Programmable schedule
Warm weather shut down
Automatic boiler differential
tekmarNet
®
4 compatible
Additional Features
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----------------
Condensing & non-condensing boiler groups
Control up to 4 modulating or on/off boilers
Primary pump sequencing
DHW pump operation
Optional DHW priority
Equal run time rotation
Pump exercising
Powered system pump output
Test sequence to ensure proper
component operation
115 V (ac) power supply
Optional boiler pump(s) operation
Access levels
Alerts
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
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Specifications
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The Boiler Control 275 is designed to stage up to four condensing or non-condensing, modulating or on-off boilers using P.I.D. staging
to accurately maintain temperature. The control supports hybrid boiler plants that contain both condensing and non-condensing boiler
groups. Water temperature is controlled by outdoor reset for space heating applications or a fixed setpoint for Domestic Hot Water
(DHW) tank heating or industrial process heating applications. The control will also accept an analog 0-10 V (dc) signal from an Energy
Management System (EMS) to control the water temperature. Boiler equal run-time rotation, pump exercising and stand-by system
pump operation increase boiler plant reliability. The control is tekmarNet
®
communication compatible allowing for internet connectivity
using an optional Gateway 483.
SPECIAL REQUIREMENTS
N / A
Setback
Boiler Control 275
One tN4, Four Modulating Boiler & DHW / Setpoint
Menu Item
Test
Boiler Demand
DHW / Setpoint Demand
Proof Demand
EMS Input Signal
Priority Override
Power 115 V ±10% 60 Hz 7 VA, 1150 VA max.
Relays 230 V (ac) 5 A 1/3 hp
Demands 20 to 260 V (ac) 2 VA
Made in Canada by
tekmar Control Systems Ltd
tektra 1020-01
Meets Class B:
Canadian ICES
FCC Part 15
For maximum heat,
press and hold Tes t
button for 3 seconds.
not testing
testing
testing paused
off
red
red
BTC I
Off
EMS
Rotate
Fixed Last
Pump Sequencer
Exercise
Off
Demands
Date Code
H2048B
Signal wiring must be rated at least 300 V.
DHW
29
/Setp
Com
30
Dem
Pr.
31
Dem
2
–
5
–
Mod1
1
+
Mod2
3
+
–
+
Mod3
4
+
Mod4
6
+
BRet/
7
Com
8
tN4
12
Boil
9
Out
10
Com
11
Prim
P1 L N
26
Power
28271413
Do not apply power
24
DHW
/ P2
23 251615 1817 2 019 2221
Fixed Lead
First On / Last Off
First On / First Off
Relay
1
Relay
2
Relay
3
Relay
4
C.A. /
Alert
Boiler
Demand
Sup
DHW
Zone Load Shedding
Boiler Control 275 One tN4, Four Modulating Boiler & DHW / Setpoint
Literature D275, A275, D001, D070
Control Microprocessor control. This is not a safety (limit) control
Packaged weight 3.3 lb. (1500 g)
Dimensions 6-5/8” H x 7-9/16” W x 2-13/16” D (170 x 193 x 72 mm)
Enclosure Blue PVC plastic, NEMA type 1
Approvals
CSA C US, meets class B: ICES & FCC Part 15
Ambient conditions
Indoor use only, 32 to 122°F (0 to 50°C), RH ≤90% Non-
condensing
Power supply 115 V (ac) ±10%, 60 Hz, 7 VA, 1150 VA max
Relays 230 V (ac) 5 A, 1/3 hp
Modulating output 0 - 10 V (dc), Minimum 2500 Ω
Demands 20 to 260 V (ac) 2 VA
Sensors NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892
–Included
Outdoor Sensor 070, 2 of Universal Sensor 082, and 500 Ω
Resistor
Warranty Limited 3 Year (See D275 for full warranty)