ClimateMaster DC Series Installation Manual download pdf (Page 20)

Residential H&V - 60Hz R22 &R410A

Rev.: 22 Dec, 2008

Water-Source Heating and Cooling Systems

Figure 16: TT/TS Single Phase Line Voltage Field Wiring

Unit Power Supply

(see electrical table for wire

and breaker size)

Electrical - Power Wiring

Figure 17: GS Single Phase Line Voltage Field Wiring

Transformer

CXM

Control

Contactor -CC

Low

Voltage

Connector

Unit Power Supply

See electrical table for

breaker size

Grnd

Rev.: 5/17/01 B

Capacitor

Blower Speed Selection – Units with PSC Motor

PSC (Permanent Split Capacitor) blower fan speed can be

changed by moving the blue wire on the fan motor terminal

block to the desired speed as shown in Figure 19. Optional

ECM motor speeds are set via low voltage controls (see

“ECM Blower Control”). Most units are shipped on the

medium speed tap. Consult speciﬁ cations catalog for

speciﬁ c unit airﬂ ow tables. Typical unit design delivers rated

airﬂ ow at nominal static (0.15 in. w.g. [37Pa]) on medium

speed and rated airﬂ ow at a higher static (0.4 to 0.5 in. w.g.

[100 to 125 Pa]) on high speed for applications where higher

static is required. Low speed will deliver approximately 85%

of rated airﬂ ow at 0.10 in. w.g. [25 Pa].

Special Note for ARI Testing: To achieve rated airﬂ ow for

ARI testing purposes on all PSC products, it is necessary to

change the fan speed to “HI” speed. When the heat pump

has experienced less than 100 operational hours and the coil

Power Connection

Line voltage connection is made by connecting the incoming

line voltage wires to the “L” side of the contactor as shown

in Figures 17 and 18. Consult Tables 4a through 4c for

correct fuse size.

208 Volt Operation

All residential 208-230 Volt units are factory wired for 230

Volt operation. The transformer may be switched to the 208V

tap as illustrated on the wiring diagram by switching the red

(208V) and the orange (230V) wires at the contactor terminal.

has not had sufﬁ cient time to be “seasoned”, it is necessary

to clean the coil with a mild surfactant such as Calgon to

remove the oils left by manufacturing processes and enable

the condensate to properly “sheet” off of the coil.

Connect the blue wire to:

H for High speed fan

M for Medium speed fan

L for Low speed fan

Medium is factory setting

Fan Motor

Figure 18: PSC Motor Speed Selection

HWG Wiring

The hot water generator pump power wiring is disabled at

the factory to prevent operating the HWG pump “dry.” After

all HWG piping is completed and air purged from the water

piping, the pump power wires should be applied to terminals

on the HWG power block PB2 as shown in the unit wiring

diagram. This connection can also serve as a HWG disable

when servicing the unit.

Section 10 - Packaged IOM 20 4/24/09 3:16:51 PM

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ClimateMaster DC Series Installation Manual Page 20

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