Install Room Thermostat - UTICA BOILERS MAH-125 Installation, Operation And Maintenance Manual

8.6 Install Room Thermostat

Install room thermostat on inside wall. Do not install where it
will be influenced by drafts, hot or cold water pipes, lighting
fixtures, television, sun rays or near a fireplace.
Dry contact only - do not apply 24 volts between 6 and 7.
A. Connect 24V Room Thermostat
• turn power off to boiler;
• access terminal block M2;
• connect 24V room thermostat to terminals 6(R)-
7(W)-8(C); Do not apply dry volt between 2
terminals. Dry contact only.
• turn boiler power on;
• verify room thermostat operates per thermostat
manufacturer instructions.
NOTE: maximum load allowed is 10 mA
B. Connect 24V Heat Anticipator Room Thermostat
• turn power off to boiler;
• access terminal block M2;
• connect wires of 24V Heat anticipator room thermostat
to terminals 6-7;
• connect bridge between terminals 6-8;
• turn boiler power on;
• verify 24 V Heat anticipator room thermostat operates
per thermostat manufacturer instructions.
8 - ELECTRICAL CONNECTIONS
FIGURE 8-4 Thermostat Connections
35
A
24V Room
Thermostat
B
24V Heat
Anticipator Room
Thermostat
240011941 REV B, [03/31/2018]