Thank you. All wired up now. The two connections from the boiler to the actual thermostat for controlling the on/off is basically terminal 1 and 2 which by default has a loop wire basically triggering the boiler to always be on unless it's turned off either using timer or the off button on the timer module. I took these to the com and n/o connection on the thermostat and it's working now.
One question though, now that my room thermostat sends a signal to turn boiler on or off, do I need to put the switch on the timer module on the boiler itself to on position? There are 3 settings on the clock ring on the boiler, 0 timer clock symbol, and 1. Currently it's set to the clock symbol meaning it's on timer. Do I need to set this to 1?