Submittal
Submittal
C 421
Mixing Reset Module 421
01/11 HVAC Systems Replaces: New
Job ___________________________
Designer_ ______________________
Contact_ _______________________
The Mixing Reset Module 421 is designed to operate all of the mechanical equipment in a hydronic heating system, except for zones, coordinating their operation through network communication. It can be used in applications ranging from a single zone of mixed radiant with an on/off boiler, to multiple radiant floor zones with an on/off boiler. This control regulates one mixed heating water temperature through Outdoor Temperature Reset and Indoor Temperature Feedback. It is capable of controlling a single on/off boiler, floating action or variable speed injection mixing, and can connect up to 24 zones in total.
Front View
Side View
Boiler
C
Item
/
1/2” Knock-out (x 16 back) (x 8 top) (x 8 bottom) (x 2 side)
Com Boil Mix Com Out 56 57 58 59 60 Do not apply power
Mixing Reset Module 421
Menu
H7007B
8–1/16” (204 mm)
Opn Cls
Floating Output: R R 24 V (ac) 8 VA 53 54 55 Powered Output
51 52
tN4
See Special Requirements Zone or Power Manager provides enclosure with NEMA rating 1.
tektra 99-02
Boil Sens Sup / Ret Off / Flushing Meets Class B: Canadian ICES & FCC Part 15 Made in Canada
Var. Pump: 115V (ac) 2.5 A Relay Rating: 115V (ac) 5 A
Test
61 62 Variable Speed Pump N
2.5 A
63 64 System P1 Pump N
7.5 A max
Var. Pump Fuse T2.5 A 250 V
7/16” (11 mm)
Ø 3/16” (5 mm)
CL 7/16” (11 mm)
11–1/8” (282 mm)
2–15/16” (74 mm)
Specifications------------------------------------------------------ Energy Saving Features-----------Mixing Reset Module 421 One tN4, Mixing Literature Control Packaged weight Dimensions Approvals Ambient conditions Power supply System P1 pump relay Variable speed pump Combined load Floating action output Boiler relay Demands Sensors –Included Warranty
D421, W421, J421, D070 Microprocessor control. This is not a safety (limit) control 1.6 lb (730 g) 3-5/8” H x 5-3/8” W x 9/16” D (92 x 137 x 14 mm) CSA C US, meets Class B: ICES & FCC Part 15 Indoor use only, 32 to 122°F (0 to 50°C), RH ≤80% to 88°F (31°C), down to 50% above 104°F (40°C), Altitude
C 421
Mixing Reset Module 421
01/11 HVAC Systems Replaces: New
Job ___________________________
Designer_ ______________________
Contact_ _______________________
The Mixing Reset Module 421 is designed to operate all of the mechanical equipment in a hydronic heating system, except for zones, coordinating their operation through network communication. It can be used in applications ranging from a single zone of mixed radiant with an on/off boiler, to multiple radiant floor zones with an on/off boiler. This control regulates one mixed heating water temperature through Outdoor Temperature Reset and Indoor Temperature Feedback. It is capable of controlling a single on/off boiler, floating action or variable speed injection mixing, and can connect up to 24 zones in total.
Front View
Side View
Boiler
C
Item
/
1/2” Knock-out (x 16 back) (x 8 top) (x 8 bottom) (x 2 side)
Com Boil Mix Com Out 56 57 58 59 60 Do not apply power
Mixing Reset Module 421
Menu
H7007B
8–1/16” (204 mm)
Opn Cls
Floating Output: R R 24 V (ac) 8 VA 53 54 55 Powered Output
51 52
tN4
See Special Requirements Zone or Power Manager provides enclosure with NEMA rating 1.
tektra 99-02
Boil Sens Sup / Ret Off / Flushing Meets Class B: Canadian ICES & FCC Part 15 Made in Canada
Var. Pump: 115V (ac) 2.5 A Relay Rating: 115V (ac) 5 A
Test
61 62 Variable Speed Pump N
2.5 A
63 64 System P1 Pump N
7.5 A max
Var. Pump Fuse T2.5 A 250 V
7/16” (11 mm)
Ø 3/16” (5 mm)
CL 7/16” (11 mm)
11–1/8” (282 mm)
2–15/16” (74 mm)
Specifications------------------------------------------------------ Energy Saving Features-----------Mixing Reset Module 421 One tN4, Mixing Literature Control Packaged weight Dimensions Approvals Ambient conditions Power supply System P1 pump relay Variable speed pump Combined load Floating action output Boiler relay Demands Sensors –Included Warranty
D421, W421, J421, D070 Microprocessor control. This is not a safety (limit) control 1.6 lb (730 g) 3-5/8” H x 5-3/8” W x 9/16” D (92 x 137 x 14 mm) CSA C US, meets Class B: ICES & FCC Part 15 Indoor use only, 32 to 122°F (0 to 50°C), RH ≤80% to 88°F (31°C), down to 50% above 104°F (40°C), Altitude
