Submittal Sheet

Job __________________________
Designer ______________________
Contact _______________________
306P
_
C
11/16
Zoning Replaces: 10/16
Switching Relay 306P
Submittal
© 2016 tekmar 306P
_
C - 11/16 1 of 2
Features --------------------------
• RoomResponse
TM
signal (Patent Pending)
• Compatible with all low voltage thermostats
• Unlimited zone expansion
• Zone priority
• Priority override
• Pump exercising
• Post purge
• LED for each zone, priority, end switch and
RoomResponse
TM
• Away signal shared between tekmar thermostats
• Four ground screws
• Top, bottom and back conduit knockouts
• Fuses protect transformers and pumps
• Two spare fuses included
• CSA approved
Specifications -----------------------------------------------------
The Switching Relay 306P connects up to six thermostats and operates circulators to provide heating to a zoned hydronic
heating system. Zone 1 has optional priority over zones 2 through 6 and can be used to provide heat to an indirect domestic
hot water tank. The 306P includes optional exercising to prevent circulator seizure when not in use, and optional post
purge operation of the last operating zone to maximize energy savings. The 306P provides a RoomResponse
TM
signal to
modulating-condensing boilers to optimize comfort while improving boiler efficiency.
Switching Relay 306P Six Zones with Priority
Literature 306P_C, 306P_D, 306P_J
Control Microprocessor control. This is not a safety (limit) control.
Packaged weight 5.0 lb. (2250 g)
Dimensions 8-3/16" H x 10-11/16" W x 2-3/8" D (208 x 271 x 60 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, 20 A
Transformer
40 VA, expandable to 80 VA with additional transformer
M3069 (sold separately)
Control load 7 VA
Fuses T5A 250 V slow blow, two spare fuses included
Pump relays 230 V (ac), 5 A, 1/3 hp
Boiler XX end switch 24 V (ac), 5 A
DHW end switch 24 V (ac), 5 A
Mod boiler output
0-10 V (dc) 500 Ω min load impedance
4-20 mA 1kΩ max load impedance
Warranty Limited 3 Year (See 306P_D for full warranty)
Front View Side View Inside View
8–3/16"
(208 mm)
6–7/16"
(164 mm)
10-11/16"
(271 mm)
1/2" (22 mm) knockout
∅ 3/16"
(4 mm)
2-3/8"
(60 mm)
FUSE 2
FUSE 7
FUSE 8
FUSE 3 FUSE 4 FUSE 5
FUSE 6
70 80
9060
50 100
MOD MAX %
MASTER MEMBER
OFF
OFF
OFF
4-20 mA
T-STAT 1 PRIORITY : 0N
EXERCISING : ON
POST PURGE : ON
MOD BOILER : 0-10V
RESERVED
FUSE 1
120 VAC
POWER
MOD
X X
tN4
POWER ROOM
RESPONSE
T1 T2 T3 T4 T5 T6
A
DHW C R W
BOILER T-STAT 1 T-STAT 2 T-STAT 3
PRIORIT Y
PUMP 1
PUMP 2 PUMP 3 PUMP 4 PUMP 5 P UMP 6
L
-
+
N L N L N L N L N L N L N
tN4
A
C R W
tN4
A
C R W
T-STAT 4
tN4
A
C R W
T-STAT 5
tN4
A
C R W
T-STAT 6 EXPANSION
tN4
A
C R W
tN4
A
B C D E
9"
(229 mm)
H3021A
Switching Relay 306P
Six Zo nes with Priority
RoomResponse
TM
Power
Priority
Zone 1 Zone 2 Zone 3 Zone 4 Zone 5 Zone 6