APC UTS6H Specifications download pdf (Page 35)

Route 120 VAC power wiring from service switch to ECR •

AR822-II and attach to 120 VAC power terminals.

Route 120 VAC power wiring from junction / switch •

box to ECR ARM-6P (or AZ-6CP or ARH-3). Wiring can

be routed through ½” offset nipple connector and into

control module enclosure. Connect 120 VAC power

wiring to 12 VDC power supply’s pig tail in control

module using wire nuts, attach ground wire to control

module enclosure grounding screw located inside

bottom of enclosure. Figure 12-3.

Wire control module to zone relay control and AR822-II •

following appropriate

freewatt PLUS

System low voltage

and line voltage electrical schematics.

Wire circulators and MCHP’s hydronic pump to zone relay •

control and AR822-II following instructions found in their

installation manuals and

freewatt PLUS

System electrical

schematics.

Connect MCHP Coolant Pump’s 24VDC power cable to system •

controller.

Connect 24 VAC circuits between boiler control and •

freewatt

Control Module per applicable electrical

schematic.

Conﬁ gure jumper on control module circuit board (Figure •

12-4) for set-up of hydronic system water heating and

space heating zones. Install jumper on DHW pins if zone 1 is

connected to aquastat in indirect water tank. Install jumper

on HEAT pins If zone 1 is connected to thermostat for space

heating. Zone 1 input on the

control module must be used

for indirect water heater if indirect water heater is used with

freewatt PLUS

System.

Connect Coolant Pump in HI Module to Control Module J04 •

connector using furnished coolant pump cable.

12.6 ECR Zone Relay Controls

Install appropriate ECR Zone Relay Control for temperature •

control of different heating zones and accommodation of

indirect water heater (if used). Refer to Electric Schematics

for speciﬁ c wiring details.

Use ECR ARM-6P control for •

freewatt PLUS

Systems

zoned with circulators ARM-6P control will accommodate up

to six zones. Expand ARM-6P with additional ARM controls if

more zones are needed.

Use six-zone ECR AZ-6CP For •

freewatt PLUS

System’s

zoned with valves. AZ-6CP can be expanded up to ten zones

with water heating priority with additional AZ control.

Use three zone ECR ARH-3 control, expanded with additional •

ARH controls for

freewatt PLUS

Systems with air

handlers (hydro-air).

DHW priority dipswitch on zone control applies only in •

bypass mode. DHW priority in MCHP mode is determined

by ﬁ rmware setting in freewatt control module accessible

via MINT software. Default setting is priority ON when DHW

enabled.

Figure 12-4 Control Module Conﬁ guration DHW or

CH Jumper

Figure 12-2 Boiler 120 VAC Connections

(Refer to Electrical Schematic)

Figure 12-3 Control Module 120 VAC

Connections

12 - ELECTRICAL WIRING & CONNECTIONS

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APC UTS6H Specifications Page 35

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