Submittal - Boston Heating Supply

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Submittal

C 279

Steam Control 279

01/11 HVAC Systems Replaces: New

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The Steam Control 279 is designed to operate a single steam boiler using outdoor reset. It can be used in single pipe steam applications as well as applications using a tankless DHW coil. This control regulates the on time of a steam boiler through outdoor reset control. It is capable of controlling a single on/off steam boiler.

Front View

Side View

Average Indoor S2 Indoor S1 Installer

STATUS Establishing Steam

Mounting Base

1/2” (13 mm) 7/8” (23 mm)

CL

Condensate Sensor DHW Tankless Coil Sensor Setback

User

Heat Cycle

Off

Lockout Differential

Test

DHW Tankless Coil Heating

off red red

not testing testing testing paused

For manual operation, press and hold Test button for 3 seconds.

Item Made in Canada By tekmar Control Systems Ltd. tektra 969-04 Power Relays

One Stage

Meets Class B: Canadian ICES FCC Part 15

115 V ±10% 50/60 Hz 3.5 VA 230 V (ac) 5 A 1/3 hp, pilot duty 240 VA

Signal wiring must be rated at least 300 V. Do not apply power



2

Power L N

3

4

Alert 1 High

5

6

Alert 2 Low

7

8

9 0  2 3 4 5 6

Boiler

Com Com DHW Indr Indr Com Cdn Out Sen Sen Sen S2 S1 Sen Sen Sen

Date Code

Menu

Steam Control 279

H2046A

6–5/8” (170 mm)

1/2” (14 mm) 1–7/8” (49 mm) 7–5/8” (193 mm)

2–7/8” (72 mm)

3/16” (5 mm)

1/2” Knock-out (x 5 back) (x 5 bottom)

Specifications------------------------------------------------------ Energy Saving Features-----------Steam Control 279 One Stage Literature Control Packaged weight Dimensions Enclosure Approvals Ambient conditions Power supply Relays Sensors –Included –Optional Warranty

D279, A279, D001, D070 Microprocessor control. This is not a safety (limit) control 3.3 lb. (1500 g) 6-5/8” H x 7-9/16” W x 2-13/16” D (170 x 193 x 72 mm) Blue PVC plastic, NEMA type 1 CSA C US, meets Class B: ICES & FCC Part 15 Indoor use only, 32 to 122°F (0 to 50°C), RH ≤90% Noncondensing, Altitude