hw series boilers Pump Taco

eltoum

i have Hw series boiler can i use heatmaker circulator pump part #  2400-005

as the pump on part # 2400-004



<a href="http://www.heatmaker.com/Heatmaker-2400-004-pump-Circulator-with-Gaskets-p/2400-004.htm">Heatmaker 2400-004 pump, Circulator, with Gaskets (Grundfos), with pressure differential </a>

since the model i have does not use pressure differential switch.

my boiler model # is 130HWNAT

2ND QUESTION

I CHECKED THE AC 120 VOLTS SUPPLY ON THE BUE WIRE SUPPLY FOR

HOT WATER PUMP AT THE RELAY  BUT THERE IS NO VOLTS  the relay has 8 pins three at left side ,three at the right side and two in the center, the blue wire for pump supply is connectted to the third wire at the left at the buttom is it  coorect and if it is not orrect where should it be connected ?

i will be happy if you send detailed cicuict diagram for the three relays showing pins numbers abd wire color.

with my best regards to all heamakers staff and all heatmakers users

your sincerely

Mahgoub Eltoum

phone # 908-576-6321