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Control Description: The Zone Expansion Manager 325 is designed to simplify the wiring between tN4 thermostats and zone valves. The 325 has an internal transformer that supplies power to the tekmarNet+4 (tN4) thermostats and connected zone valves. Control + Microprocessor PID control; This is not a safety (limit) control Packaged Weight + 2.95 lb. (1338 g) Dimensions + 3-5/8" H x 5-3/8" W x 9/16" D (92 x 137 x 14 mm) Approvals + CSA C US, CSA/UL 61010-1, meets Class B: ICES and FCC Part 15 Ambient Conditions + Indoor use only, 32 to 122+F (0 to 50+C); RH equal to or less than 80% to 88+F (31+C), down to 50% from 104 to 122+F (40 to 50+C); Altitude <2000 m, Installation Category II, Pollution Category 2 Power Supply + Provided by interconnected Zone Manager Transformer + 24 V (ac) 8 VA Maximum Zone Group Pump C Relay + 0-10 V Minimum 2500 Ω Combined Relay Load + 115 V (ac) 5 A 1/4 hp, pilot duty 240 VA
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Width (Inches):




User Interface:

DIP Switch

Depth (Inches):


Ambient Conditions:

Indoor Only: 32°-122°F RH equal to or less than 80% to 88F;50% from 104-122F Altitude<2000m

Power Supply:

From Interconnected Zone Manager


115 V (ac) 5 A-1/4 hp- pilot duty 240 VA


6 Zone Valves

Weight (lbs):

2.95 lbs


24 V (ac) 8 VA Maximum

Zone Group Pump C Relay:

0-10 V Minimum 2500 ohms


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