Install Instructions

ARM “TANKLESS COIL” APPLICATION

RELAY

REMOVE factory installed jumper

between ZC and ZR.

A tankless coil requires a boiler aquastat. Each zone thermostat will

signal the ARM to start its zone circulator and send a call for heat to the

boiler aquastat. If boiler temperature drops below the low limit setting,

all circulating will cease until temperature of boiler water is increased.

JUMPER

Remove factory-installed jumper between terminals ZC and ZR.

Connect terminals ZC and ZR to corresponding ZC and ZR termi-

nals on boiler aquastat. Circulators for zones connected to the ARM

relays will not operate if the boiler tankless coil aquastat low limit is

not satised. Terminals ZC-ZR are 120 VAC connections.

PRIORITY

Circulators for additional zones will not operate when zone 1 (pri-

ority) circulator is actuated. (Priority switch is

ON.) When priority

switch is not ON, all zones operate independently of each other.