Burnham RTC (Return Temperature Control) Brožura stáhnout pdf (Strana 3)

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RTC Kit Selection Chart

(1)

SELECT BOILER SIZE BASED ON ∆ T

(4)

VALVE

SIZE

(1) (2)

BASIC

RTC KIT

PART #

RTC KIT w/

OUTDOOR RESET

PART #

APPROXIMATE

SHIPPING

WEIGHT20° ∆ T 40° ∆ T

— V903 1.0 NPT" 60160851 60160861 17

— V904 1.25 NPT" 60160852 60160862 17

V903

V904

V905, V906

V1104, V1105

1.5 NPT" 60160853 60160863 20

V905

V1104

V907, V908, V909

V1106, V1107, V1108

2.0 NPT" 60160854 60160864 24

V906, V907, V908

V1105, V1106

V910, V911, V912

V1109, V1110, V1111

2.5" FLG

(3)

60160855 60160865 47

V909, V910, V911

V1107, V1108, V1109

V1112, V1113, V1114

V1115, V1116, V1117

2.5" FLG

(3)

60160856 60160866 47

V912

V1110, V1111, V1112, V1113

V1118 V1119, V1120

V1121, V1122, V1123

3.0" FLG 60160857 60160867 55

V1114, V1115

V1116, V1117, V1118

— 4.0" FLG 60160858 60160868 80

V1119, V1120

V1121, V1122, V1123

— 5.0" FLG 60160859 60160869 93

1. Requires addition of a boiler circulator, to be provided by installer. See back page for circulator selection.

2. Pipe size varies on application – Refer to I & O Manual for details.

3. The 2.5” valves have diferent Cv values. Refer to the I & O Manual for details.

4. RTC can be used on other Burnham Commercial products. Consult factory for application.

RTC Return Temperature Control Speciﬁcation

1. The Burnham RTC Return Temperature Control is a CSA certiﬁed microprocessor based control that will control boiler

return water temperature to prevent thermal shock and ﬂue gas condensation.

2. The control shall have a 120V power supply with a built in 24V transformer to power a ﬂoating action type actuator.

3. The control shall provide a 24V ﬂoating output signal to modulate a three-way or a four-way diverting valve based on a

signal from the return temperature sensor mounted in the return piping to the boiler.

4. The control shall have an LCD display to view system status and operating information.

5. The control shall have a non-volatile memory to monitor supply and return water temperatures and boiler run times.

6. The control shall have a boiler minimum setting of 135°F and shall not be programmable any lower than 135°F.

7. The control shall have a warm weather shut down feature, a heat demand input, boiler contact and pump contact.

8. The control must receive a heat demand before it can operate. When the demand is removed, the diverting valve shall

fully close before it is allowed to respond to the new heat demand.

9. The control shall have a test sequence to ensure proper component operation, an adjustable pump post purge of zero to

240 seconds, exercising of pump and diverting valve, error messages when it detects a malfunction and an adjustable

actuator motor speed setting of 30 to 230 seconds.

10. The control shall have the ability to operate with an outdoor reset function. This requires the use of a mixed water sensor

and an outdoor air sensor.

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