Submittal Sheet

Job __________________________
Designer ______________________
Contact _______________________
301P
_
C
02/18
Zoning Replaces: New
Switching Relay 301P
Submittal
© 2018 tekmar 301P
_
C - 02/18 1 of 2
L
120VAC Power
RELAY I EXERCISING
RELAY I POST PURGE
Boiler A
X X
tN4 C R W
T-STAT
PUMP 1
N L N
Features --------------------------
• Compatible with all low voltage thermostats
• Pump exercising
• Post purge
• LED for power and zone
• Top, bottom and back conduit knockouts
• Fuse protects pump
• Spare fuse included
• 20 VA transformer
• Thermal circuit breaker protects transformer
• Hinged cover
• CSA approved
• 3-year warranty
Specifications -----------------------------------------------------
The Switching Relay 301P connects to one thermostat and operates a circulator and boiler to provide heating to a hydronic
heating system. The 301P includes optional exercising to prevent circulator seizure when not in use, and optional post
purge operation maximize energy savings.
Switching Relay 301P One Zone
Literature 301P_C, 301P_D
Control Microprocessor control. This is not a safety (limit) control.
Packaged weight 2.5 lb. (1125 g)
Dimensions 6-11/16" H x 4-15/16" W x 2-7/16" D (169 x 123 x 62 mm)
Enclosure Cover: ABS plastic, Base: galvanized steel, NEMA type 1
Approvals
CSA C US
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, 5 A
Transformer 24 V (ac), 20 VA
Control load 7.5 VA
Fuses T5A, 250 V slow blow, spare fuse included
Pump relay 230 V (ac), 5 A, 1/3 hp
Boiler XX end switch 24 V (ac), 5 A
Warranty Limited 3 Year (See 301P_D for full warranty)
Front View Side View Inside View
6-11/16"
(169 mm)
5-1/16"
(128 mm)
4-15/16"
(123 mm)
1/2" (13 mm) knockout
7/8" (22 mm) knockout
∅ 3/16"
(4 mm)
2-7/16"
(62 mm)
Power
Zone 1
Switching Relay 301P
3-1/4"
(83 mm)