WaterFurnace Versatec Base User Manual

Commercial 0.5 to 6 Ton
Geothermal/Water Source Heat Pump

Installation Information

Water Piping Connections

Electrical

Startup Procedures

Troubleshooting

Preventive Maintenance

Versatec Base Series Installation Manual

IM1201AUB 05/14

Table of Contents

Model Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

General Installation Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

Installing Horizontal Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Hanger Bracket Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Duct System and Water Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Water Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

System Cleaning and Flushing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Open Loop Ground Water Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Freeze Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

VERSATEC BASE SERIES INSTALLATION MANUAL

Electrical Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-18

Blower Performance Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-22

5-Speed ECM Constant Torque Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24-29

Controls - Aurora Base Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30-33

Controls - UPC (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34-39

Unit Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Operating Parameters and Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Pressure Drop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Compressor and Thermistor Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Refrigerant Circuit Guideline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Heat of Extraction/Rejection Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Reference Calculations and Legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

Startup/Troubleshooting Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47-48

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Replacement Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Service Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50-51

Revision Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

VERSATEC BASE SERIES INSTALLATION MANUAL

UB

1-2 3 4-6 7 8 9

10 11 12 14

V 036 T L 0 0 0 C A N13A15N16017A18319020SS

21-22*23

Model Nomenclature

Model Type

UB – Versatec Base

Cabinet Configuration

V – Vertical
H - Horizontal

Unit Capacity (MBTUH)
006, 009, 012, 015, 018,
024, 030, 036, 042,
048, 060, 070

Discharge Configuration

T – Top (Vertical)
E – End (Horizontal)
S – Side (Horizontal)

Return Air Configuration

L – Left
R – Right

Voltage

0 – 208-230/60/1
2 – 265-277/60/1 (006-036)
3 – 208-230/60/3 (024-070)
4 – 460/60/3 (024-070)
5 – 575/60/3 (PSC Only 042-070)
9 – 115/60/1 (006-012)

Future Option

0 – None

Blower Options

0 – PSC Blower
1 – Variable Speed ECM Blower (015-070)
4 – 5-Speed ECM Blower (015-070)

Water Coil Option

C – Copper
D – Insulated Copper
N – CuproNickel
P – Insulated CuproNickel

Sound Kit Option

A – None
B – Sound Kit (Not Available on UBH006-012)

Vintage

* - Factory Use Only

Non-Standard Options

SS – Standard

Drain Pan Option

0 – Composite, No Secondary Connection
1 – Composite, Secondary Connection
2 – Stainless Steel, No Secondary Connection
3 – Stainless Steel, Secondary Connection

Air Coil Option

3 – All-Aluminum, Uncoated
4 – All-Aluminum, AlumiSeal

Filter Option

A – MERV 4
B – MERV 13

Cabinet Option

0 – Unpainted Cabinet, Filter Rail
2 – Unpainted Cabinet, 4-Sided Filter Rack
1 – Painted Cabinet, Filter Rail
3 – Painted Cabinet, 4-Sided Filter Rack

Phase Guard

N – No Phase Guard, No Disconnect
D – No Phase Guard, Disconnect
P – Phase Guard, No Disconnect
B – Phase Guard, Disconnect

Control Option

A – AuroraTM Base Control (ABC)
E – Aurora UPC DDC Controller
F – Aurora UPC DDC Controller with LON

Water Control Option

N – None
R – Water Flow Regulator (015-070)
V – 2-Way Valve (015-070)
B – 2-Way Valve w/ Water Flow Regulator
(015-070)

Rev.: 24 April 2014D

1

2

TM

Note:
1 - Phase Guard Only Available on 208-230/60/3, 460/60/3, and 575/60/3
2 - 50VA transformer with Aurora Base Control, and 75VA transformer with Aurora UPC control

All Versatec Base Series product is safety listed under UL1995 thru ETL and performance
listed with AHRI in accordance with standard 13256-1.

4

General Installation Information

VERSATEC BASE SERIES INSTALLATION MANUAL

Safety Considerations

WARNING: Before performing service or
maintenance operations on a system, turn off main
power switches to the indoor unit. If applicable,
turn off the accessory heater power switch.
Electrical shock could cause personal injury.

Installing and servicing heating and air conditioning
equipment can be hazardous due to system pressure and
electrical components. Only trained and qualified service
personnel should install, repair or service heating and air
conditioning equipment. Untrained personnel can perform
the basic maintenance functions of cleaning coils and
cleaning and replacing filters. All other operations should
be performed by trained service personnel. When work­ing on heating and air conditioning equipment, observe
precautions in the literature, tags and labels attached to the
unit and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work
gloves. Use a quenching cloth for brazing operations and
have a fire extinguisher available.

Moving and Storage

Move units in the normal “up” orientation. Horizontal units
may be moved and stored per the information on the
packaging. Do not stack more than three units in total
height. Vertical units may be stored one upon another to
a maximum height of two units. Do not attempt to move
units while stacked. When the equipment is received, all
items should be carefully checked against the bill of lading
to be sure all crates and cartons have been received.
Examine units for shipping damage, removing the units
from the packaging if necessary. Units in question should
also be internally inspected. If any damage is noted, the
carrier should make the proper notation on the delivery
receipt, acknowledging the damage.

Unit Location

Locate the unit in an indoor area that allows for easy
removal of the filter and access panels. Location should
have enough space for service personnel to perform
maintenance or repair. Provide sufficient room to make
water, electrical and duct connection(s). If the unit is
located in a confined space, such as a closet, provisions
must be made for return air to freely enter the space
by means of a louvered door, etc. Any access panel
screws that would be difficult to remove after the unit
is installed should be removed prior to setting the unit.
On horizontal units, allow adequate room below the unit
for a condensate drain trap and do not locate the unit
above supply piping. Care should be taken when units are

located in unconditioned spaces to prevent damage from
frozen water lines and excessive heat that could damage
electrical components.

Installing Vertical Units

Vertical units are available in left or right air return
configurations. Top flow vertical units should be mounted
level on a vibration absorbing pad slightly larger than the
base to provide isolation between the unit and the floor.

Vertical Unit Mounting

2 in. PEX Foam

5

VERSATEC BASE SERIES INSTALLATION MANUAL

Vertical Dimensional Data

Standard filter rails for

open return applications

Field installed
duct flange

Deluxe filter rack for

ductable return applications

A

RN

S

Q

AIR COIL SIDE

P

B

A

Air coil

N

Q

ACCESS

PANEL

P

B

AIR COIL SIDE

2' (61 cm)
Alternate

F

Service Access

2' (61 cm)

Isometric View - Left Return

FRONT

F

M

M

FRONT

Top View - Right Return Top View - Left Return

Service Access Left Return

(Right Return Opposite Side)

U

T

W

Air coil

Air coil

ACCESS

PANEL

ACCESS

PANEL

C

1.6 in (4.1 cm)
Condensate 3/4 in

PVC glue socket

1.6 in (4.1 cm)

5

H

2

E

1

D

Front View - Right Return

Water
Connections*

Power supply

1 in (25.4 mm)

knockout

6
8

1/2" (12.7 mm)

J

L

Low voltage

knockout

L

K

Condensate

3/4 in PVC

glue socket

1.6 in (4.1 cm)

8
7

Water

Connections*

Front View - Left Return

NOTE: * Water connections protrude approximately 1.5 in. from cabinet.

V

C

1.6 in
(4.1 cm)

5
2

1

H

E

J

D

6

ACCESS

8

PANEL

L

8
7

L

K

Right View - Right Return (J & L)

Left View - Left Return (K & L)

6

Vertical Dimensional Data cont.

VERSATEC BASE SERIES INSTALLATION MANUAL

Overall Cabinet

Vertical

Models

006-012

015-018

024-030

036

042-048

060

070

006-012

015-018

024-030

036

042-048

060

070

Condensate is 3/4 in. PVC female glue socket and is switchable from side to front.
* Discharge fl ange is fi eld installed and extends 1 in. (25.4 mm) from top of cabinet.

** Vertical units shipped with standard 2 in. (fi eld adjustable to 1 in.) open application fi lter rail extending 2.2 in. from the unit and
is not suitable for duct connection. For ductable return connection applications, order the 2 in. (fi eld adjustable to 1 in.) duct collar/
fi lter rack which extends to 3.25 in. from the unit and is suitable for duct connections.

in. 19.2 19.2 24.2 2.6 5.6 8.8 1/2 in. 7.4 3.4 5.4 2.2

cm. 48.8 48.8 61.5 6.6 14.2 22.4 12.7 mm 18.8 8.6 13.7 5.6

in. 22.5 22.2 30.2 2.6 7.6 10.8 3/4 in. 9.4 5.4 7.4 2.2

cm. 57.2 56.4 76.7 6.6 19.3 27.4 19.1 mm 23.9 13.7 18.8 5.6

in. 22.5 22.2 36.2 2.6 7.6 10.8 3/4 in. 9.4 5.4 7.4 2.2

cm. 57.2 56.4 91.9 6.6 19.3 27.4 19.1 mm 23.9 13.7 18.8 5.6

in. 22.5 26.2 40.2 2.6 7.6 10.8 3/4 in. 10.1 6.1 8.1 2.2

cm. 57.2 66.5 102.1 6.6 19.3 27.4 19.1 mm 25.7 15.5 20.6 5.6

in. 22.5 26.2 44.2 2.6 7.6 10.8 3/4 in. 10.1 6.1 8.1 2.2

cm. 57.2 66.5 112.3 6.6 19.3 27.4 19.1 mm 25.7 15.5 20.6 5.6

in. 25.5 31.2 44.2 2.6 7.6 10.8 1 in. 10.1 6.1 8.1 2.2

cm. 64.8 79.2 112.3 6.6 19.3 27.4 25.4 mm 25.7 15.5 20.6 5.6

in. 25.5 31.2 48.2 2.6 7.6 10.8 1 in. 10.1 6.1 8.1 2.2

cm. 64.8 79.2 122.4 6.6 19.3 27.4 25.4 mm 25.7 15.5 20.6 5.6

Vertical

Models

in. 10.0 10.0 4.6 4.4 7.8 2.4 14.3 10.1 2.0

cm. 25.4 25.4 11.7 11.2 19.8 6.1 36.3 25.7 5.1

in. 14.0 14.0 4.1 4.3 7.7 2.1 18.1 14.0 2.0

cm. 35.6 35.6 10.4 10.9 19.6 5.3 46.0 35.6 5.1

in. 14.0 14.0 4.1 4.3 7.7 2.1 18.1 20.0 2.0

cm. 35.6 35.6 10.4 10.9 19.6 5.3 46.0 50.8 5.1

in. 14.0 14.0 6.1 4.5 7.7 2.1 22.1 22.1 2.0

cm. 35.6 35.6 15.5 11.4 19.6 5.3 56.1 56.1 5.1

in. 18.0 18.0 4.1 3.9 3.9 2.1 22.1 26.1 2.0

cm. 45.7 45.7 10.4 9.9 9.9 5.3 56.1 66.3 5.1

in. 18.0 18.0 6.6 4.6 6.3 1.6 28.1 26.0 2.0

cm. 45.7 45.7 16.8 11.7 16.0 4.1 71.4 66.0 5.1

in. 18.0 18.0 6.6 4.6 6.3 1.6 28.1 30.0 2.0

cm. 45.7 45.7 16.8 11.7 16.0 4.1 71.4 76.2 5.1

A B C D E H 1/2 in. cond 1/2 in. cond 1 in. cond M

Width Depth Height* In Out

Discharge Connection

duct fl ange installed (±0.10 in)

NPQRSTUVW

Supply Width Supply Depth Return Depth Return Height

125

Water Connections

Cond-

ensate

Loop

Water FPT

Electrical Knockouts
678
JKL

Low

Voltage

using deluxe fi lter rack (±0.10 in)

Low

Voltage

**Return Connection

Supply

Power

Filter Rack

Width

09/26/12

Vertical Disconnect

When using disconnect, do not use dimension L from the
standard vertical dimensional data. Use dimension LL from
the vertical disconnect dimensional data.

Vertical Models LL

015-018

024-030

036

042-048

060
070

Dimensions in inches [cm]
* Models 006-012 - Externally Mounted Disconnect

15.8 [40.1]

18.8 [47.8]

15.3 [38.9]

13.8 [35.1]

14.3 [36.3]

14.3 [36.3]

Disconnect Located

on this Side for a

Disconnect

Location

Power
Supply

Right Return

Alternative
Power Supply

LL

Vertical Shown in Left

Return Configuration

7

VERSATEC BASE SERIES INSTALLATION MANUAL

Horizontal Dimensional Data

Right Return

Condensate
"X" PVC size

End Discharge

Deluxe filter rack option shown

2.3

BLOWER

OUTLET

AIR COIL SIDE

FILTER RACK

H

3

2.1

Right Return

End Discharge

N

A

Standard filter rails

1 in knockout

1/2 in knockout

Side Discharge

P

M

C

L

BP

Front

AP

CMP

2' (61 cm)

Service Access

1.7

K

J

Right Return Air Front View

1.7

2

E

1

D

Left Return Air Front View

AP = Alternate Service Panel
BP = Blower Service Panel
CP = Control Access Panel
CMP = Compressor Service Panel

1.7

CP
AP

CMP

A

1.7

CP
AP

CMP

Legend

E

D

J

Service Access

1/2 in knockout
1 in knockout

K

Standard filter rails

Front

AP

CMP

2' (61 cm)

BP

Side Discharge

Deluxe filter rack option shown
P

N

L

C

M

BLOWER

OUTLET

Left Return

End Discharge

A

Left Return

"X" PVC size

End Discharge

2.3
AIR COIL SIDE

FILTER RACK

3

2.1

Condensate

H

P

P

N

L

M

BP

Air Coil

Front Front

Water Connections*

BLOWER

OUTLET

Right Return Side Discharge

C

FILTER RACK CONNECTION FILTER RACK CONNECTION

B

Right Return Side View

AP

CMP

1.5

K

Front

J

SQ

R

1/2 in knockout

1 in knockout

1" knockout

1/2 in knockout

T

Deluxe filter

rack option

(shown)

Front

C

1.5

J

AP

K

T

CMP

Left Return Side Discharge

S

R

Q

B

Left Return Side View

N

BLOWER

OUTLET

Air Coil

Water Connections*

NOTE: * Water connections protrude approximately 1.5 in. from cabinet.

BP

M

L

8

Horizontal Dimensional Data cont.

VERSATEC BASE SERIES INSTALLATION MANUAL

Horizontal

Models

Width Depth Height* In Out Condensate Water FPT Low Voltage Power Supply

006-012**

015-018

024-030

036

042-048

060

070

Horizontal

Models

006-012**

015-018

024-030

036

042-048

060

070

Horizontal units shipped with standard 2 in. (fi eld adjustable to 1 in.) open application fi lter rail extending 2.2 in. from the unit and
is not suitable for duct connection. For ductable return connection applications, order the 2 in. (fi eld adjustable to 1 in.) duct collar/
fi lter rack which extends to 3.25 in. from the unit and is suitable for duct connections.

** UBH006-012 offers a lifted drain pan that allows the trap to be installed without additional ceiling height required.

in. 19.2 35.0 12.1 1.8 4.8 3.6 1/2 in. 7.4 7.5

cm. 48.8 88.9 30.7 4.6 12.2 9.1 12.70 mm 18.8 19.1

in. 22.5 35.0 17.2 1.8 6.8 0.8 3/4 in. 7.1 7.1

cm. 57.2 88.9 43.7 4.6 17.3 2.0 19.05 mm 18.0 18.0

in. 22.5 42.0 17.2 1.8 6.8 0.8 3/4 in. 7.1 7.1

cm. 57.2 106.7 43.7 4.6 17.3 2.0 19.05 mm 18.0 18.0

in. 22.5 42.0 19.2 1.8 6.8 0.8 3/4 in. 9.2 7.1

cm. 57.2 106.7 48.8 4.6 17.3 2.0 19.05 mm 23.4 18.0

in. 22.5 45.0 19.2 1.8 6.8 0.8 3/4 in. 9.2 7.1

cm. 57.2 114.3 48.8 4.6 17.3 2.0 19.05 mm 23.4 18.0

in. 25.5 48.0 21.2 1.8 6.8 0.8 1 in. 9.2 9.1

cm. 64.8 121.9 53.8 4.6 17.3 2.0 25.4 mm 23.4 23.1

in. 25.5 53.0 21.2 1.8 6.8 0.8 1 in. 9.2 9.1

cm. 64.8 134.6 53.8 4.6 17.3 2.0 25.4 mm 23.4 23.1

in. 2.3 8.0 10.0 2.7 22.5 9.4 2.4 1.4 1/2 in.

cm. 5.8 20.3 25.4 6.9 57.2 23.9 6.1 3.6 1.3

in. 5.7 10.5 9.4 4.9 16.4 14.5 2.0 1.4 3/4 in.

cm. 14.5 26.7 23.9 12.4 41.7 36.8 5.1 3.6 1.9

in. 5.7 10.5 9.4 4.9 23.4 14.5 2.0 1.4 3/4 in.

cm. 14.5 26.7 23.9 12.4 59.4 36.8 5.1 3.6 1.9

in. 6.7 10.5 9.4 4.9 27.4 16.5 2.0 1.4 3/4 in.

cm. 17.0 26.7 23.9 12.4 69.6 41.9 5.1 3.6 1.9

in. 4.2 13.6 13.2 2.4 30.4 16.5 2.0 1.5 3/4 in.

cm. 10.7 34.5 33.5 6.1 77.2 41.9 5.1 3.8 1.9

in. 4.8 13.6 13.2 4.6 35.4 18.7 2.3 1.3 3/4 in.

cm. 12.2 34.5 33.5 11.7 89.9 47.5 5.8 3.3 1.9

in. 4.8 13.6 13.2 4.6 40.4 18.5 2.3 1.4 3/4 in.

cm. 12.2 34.5 33.5 11.7 102.6 47.0 5.8 3.6 1.9

Overall Cabinet

A B C D E H 1/2 in. cond 1 in. cond

Discharge Connection

duct fl ange installed (±0.10 in)

LMNPQRS TX

Supply Width Supply Depth Return Depth Return Height

123

Water Connections Electrical Knockouts

Loop

Return Connection

using deluxe fi lter rack option (±0.10 in)

JK

PVC Size

09/26/12

Horizontal Disconnect

When using disconnect, do not use dimension K from the
standard horizontal dimensional data. Use dimension KK
from the horizontal disconnect dimensional data.

Horizontal Models KK

015-018

024-030

036

042-048

060
070

Dimensions in inches [cm]
* Models 006-012 - Externally Mounted Disconnect

8.2 [20.8]

8.2 [20.8]

9.2 [23.4]

9.2 [23.4]

11.2 [28.4]

10.2 [25.9]

Disconnect Located on this
Side for a Left Return

Disconnect
Location

KK

Power Supply

Horizontal Shown

In Right Return

Configuration

9

VERSATEC BASE SERIES INSTALLATION MANUAL

Installing Horizontal Units

Installing Horizontal Units

Horizontal units are available with side or end discharge
and may be easily field converted by flipping the blower
discharge panel. Horizontal units are normally suspended
from a ceiling by four 3/8 in. diameter threaded rods. The
rods are usually attached to the unit by hanger bracket kits
furnished with each unit. Lay out the threaded rods per
the dimensions below. Assemble the hangers to the unit as
shown. Securely tighten the brackets to the unit using the
weld nuts located on the underside of the bottom panel.
When attaching the hanger rods to the bracket, a double
nut is required since vibration could loosen a single nut.

NOTE: The unit should be pitched approximately 1/4
in. towards the drain in both directions to facilitate the
removal of condensate.

Horizontal Unit Mounting

Use only the bolts provided in the kit to attach hanger
brackets. The use of longer bolts could damage internal
parts. Some applications require the installation of
horizontal units on an attic floor. In this case, the unit
should be set in a full size secondary drain pan on top of a
vibration absorbing pad. The secondary drain pan prevents
possible condensate overflow or water leakage damage to
the ceiling. The secondary drain pan is usually placed on a
plywood base isolated from the ceiling joists by additional
layers of vibration absorbing material. Insulate supply
plenum and use at least one 90° elbow and flexible duct
collar to reduce noise.

CAUTION: Do not use rods smaller than 3/8 in.
diameter since they may not be strong enough
to support the unit. The rods must be securely
anchored to the ceiling.

10

Hanger Bracket Locations

VERSATEC BASE SERIES INSTALLATION MANUAL

D

Compressor

Section

B

E

Hanger Dimensions

Model

006-012

015-018

024-030

036

042-048

060

070

Hanger Kit

Part Number

in.

99S500A04

cm. 90.9 55.4 46.0

in.

99S500A04

cm. 90.9 63.8 54.4

in.

99S500A04

cm. 108.6 63.8 54.4

in.

99S500A04

cm. 108.7 63.8 54.4

in.

99S500A04

cm. 116.3 63.8 54.4

in.

99S500A04

cm. 124.0 71.4 62.0

in.

99S500A04

cm. 136.7 71.4 62.0

Right

F

C

Air Handler

Section

G

A

3/8”

Threaded Rod

(not supplied)

Bolt and
Lockwasher

Unit Hanger Dimensions

ABC

35.8 21.8 18.1

35.8 25.1 21.4

42.8 25.1 21.4

42.8 25.1 21.4

45.8 25.1 21.4

48.8 28.1 24.4

53.8 28.1 24.4

09/26/12

E

Compressor

Section

D

Vibration Isolator

Washer

Hex Nuts
(not supplied)

Weight Distribution

Model

006-

012

015-

018

024

030

036

042

048

060

070

Vertical

Shipping

Weight

lb. 111 112 44 21 19 28

kg 50 51 20 10 9 12

lb. 171 176 67 32 32 45

kg 78 80 30 15 15 20

lb. 245 242 85 47 45 65

kg 111 110 39 21 20 29

lb. 245 242 85 47 45 65

kg 111 110 39 21 20 29

lb. 267 265 95 60 50 60

kg 121 120 43 27 23 27

lb. 305 310 105 68 60 77

kg 138 141 48 31 27 35

lb. 305 310 105 68 60 77

kg 138 141 48 31 27 35

lb. 344 350 115 77 68 90

kg 156 159 52 35 31 41

lb. 357 378 130 80 73 95

kg 162 171 59 36 33 43

Horizontal

Shipping

Weight

Left

G

Air Handler

Section

F

Horizontal Weight Distribution

Front Back

DEFG

10/03/12

11

VERSATEC BASE SERIES INSTALLATION MANUAL

Duct System

An air outlet collar is provided on vertical top flow units
and all horizontal units to facilitate a duct connection.
A flexible connector is recommended for discharge
and return air duct connections on metal duct systems.
Uninsulated duct should be insulated with a minimum of
1-inch duct insulation. Application of the unit to uninsulated
ductwork in an unconditioned space is not recommended
as the unit’s performance will be adversely affected.

If the unit is connected to existing ductwork, check the duct
system to ensure that it has the capacity to accommodate
the air required for the unit application. If the duct is too
small, as in the replacement of heating only systems, larger

Water Piping

The proper water flow must be provided to each unit
whenever the unit operates. To assure proper flow, use
pressure/temperature ports to determine the flow rate.
These ports should be located at the supply and return
water connections on the unit. The proper flow rate cannot
be accurately set without measuring the water pressure
drop through the refrigerant-to-water heat exchanger.

ductwork should be installed. All existing ductwork should
be checked for leaks and repaired if necessary.

The duct system should be sized to handle the design
airflow quietly and efficiently. To maximize sound
attenuation of the unit blower, the supply and return
plenums should include an internal duct liner of fiberglass
or constructed of ductboard for the first few feet. On
systems employing a sheet metal duct system, canvas
connectors should be used between the unit and the
ductwork. If air noise or excessive airflow is a problem, the
blower speed can be changed.

All source water connections on commercial units are
fittings that accept a male pipe thread (MPT). Insert the
connectors by hand, then tighten the fitting with a wrench
to provide a leakproof joint. When connecting to an open
loop (groundwater) system, thread any copper MPT fitting
into the connector and tighten in the same manner as
described above.

12

Water Quality

VERSATEC BASE SERIES INSTALLATION MANUAL

In ground water situations where scaling could be heavy
or where biological growth such as iron bacteria will be
present, a closed loop system is recommended. The heat
exchanger coils in ground water systems may, over a period

with extremely hard water, the owner should be informed
that the heat exchanger may require occasional flushing.
Failure to adhere to the guidelines in the water quality table

could result in loss of warranty.
of time, lose heat exchange capabilities due to a buildup
of mineral deposits inside. These can be cleaned, but only
by a qualified service mechanic, as special solutions and
pumping equipment are required. Hot water generator coils
can likewise become scaled and possibly plugged. In areas

Material Copper 90/10 Cupronickel 316 Stainless Steel

pH Acidity/Alkalinity

Scaling

Corrosion

Iron Fouling

(Biological Growth)

Erosion

NOTES: Grains = ppm divided by 17

mg/L is equivalent to ppm

Calcium and

Magnesium Carbonate

Hydrogen Sulfide

Chlorine Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm

Chlorides Less than 20 ppm Less than 125 ppm Less than 300 ppm

Carbon Dioxide Less than 50 ppm 10 - 50 ppm 10 - 50 ppm

Ammonia Less than 2 ppm Less than 2 ppm Less than 20 ppm

Ammonia Chloride Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm

Ammonia Nitrate Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm

Ammonia Hydroxide Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm

Ammonia Sulfate Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm

Total Dissolved Solids (TDS) Less than 1000 ppm 1000 - 1500 ppm 1000 - 1500 ppm

LSI Index +0.5 to -0.5 +0.5 to -0.5 +0.5 to -0.5

Iron, FE

Bacterial Iron Potential

Iron Oxide

Suspended Solids

Threshold Velocity

(Fresh Water)

Less than 0.5 ppm (rotten egg

Sulfates Less than 125 ppm Less than 125 ppm Less than 200 ppm

2

+ (Ferrous)

smell appears at 0.5 ppm)

Less than 1 ppm, above this

level deposition will occur

Less than 10 ppm and filtered

for max. of 600 mic

7 - 9 7 - 9 7 - 9

(Total Hardness)

less than 350 ppm

< 0.2 ppm < 0.2 ppm < 0.2 ppm

< 6 ft/sec < 6 ft/sec < 6 ft/sec

Units with cupronickel heat exchangers are recommended

for open loop applications due to the increased resistance

to build-up and corrosion, along with reduced wear caused

by acid cleaning.

ron size

(Total Hardness)

less than 350 ppm

10 - 50 ppm Less than 1 ppm

Less than 1 ppm, above this

level deposition will occur

Less than 10 ppm and filtered

for max. of 600 micron size

(Total Hardness)

less than 350 ppm

Less than 1 ppm, above this

level deposition will occur

Less than 10 ppm and filtered

for max. of 600 micron size

2/22/12

Condensate Drain

On vertical units, the internal condensate drain assembly
consists of a drain tube which is connected to the drain
pan, a 3/4 in. PVC female adapter and a flexible connecting
hose. The female adapter may exit either the front or the
side of the cabinet. The adapter should be glued to the
field-installed PVC condensate piping. On vertical units, a
condensate hose is inside all cabinets as a trapping loop;
therefore, an external trap is not necessary.

Vent (if needed)

PVC tube stub
1/8 in. per foot

PVC tube stub

NOTE: UBH006-012 offers a lifted
drain pan that allows the trap to
be installed without additional
ceiling height required.

PVC coupling

1.5 in.

1.5 in.

On horizontal units, a PVC stub or stainless steel tube
is provided for condensate drain piping connection. An
external trap is required (see below). If a vent is necessary,
an open stand pipe may be applied to a tee in the field­installed condensate piping.

NOTE: All units equipped with electronic condensate
overflow protection.

Unit Pitch for DrainHorizontal Drain Connection (Composite Drain Pan)

1/2'' Pitch

Drain

13

VERSATEC BASE SERIES INSTALLATION MANUAL

System Cleaning and Flushing

Cleaning and Flushing

Prior to start up of any heat pump, the water circulating
system must be cleaned and flushed of all dirt and debris.

If the system is equipped with water shutoff valves, the
supply and return runouts must be connected together
at each unit location (This will prevent the introduction of
dirt into the unit, see Flushing with Water Shutoff Valve
Equipped Systems illustration). The system should be filled
at the water make-up connection with all air vents open.
After filling, vents should be closed.

Flushing with Water Shutoff Valve Equipped Systems

Return Runout

Supply Runout

Mains

Rubber Hose

Runouts Initially
Connected Together

The contractor should start the main circulator with the
pressure reducing valve makeup open. Vents should be
checked in sequence to bleed off any trapped air and to
verify circulation through all components of the system.

As water circulates through the system, the contractor
should check and repair any leaks found in the piping
system. Drain(s) at the lowest point(s) in the system should
be opened for initial flush and blowdown, making sure
water fill valves are set at the same rate. Check the pressure
gauge at the pump suction and manually adjust the make­up water valve to hold the same positive pressure both
before and after opening the drain valves. Flushing should
continue for at least two hours, or longer if required, until
drain water is clean and clear.

The supplemental heater and/or circulator pump, if used,
should be shut off. All drains and vents should be opened
to completely drain the system. Short-circuited supply and
return runouts should now be connected to the unit supply
and return connections.

Refill the system with clean water. Test the system water
for acidity and treat as required to leave the water slightly
alkaline (pH 7.5 to 8.5). The specified percentage of
antifreeze may also be added at this time. Use commercial
grade antifreeze designed for HVAC systems only.
Environol™ brand antifreeze is recommended.

Once the system has been filled with clean water and
antifreeze (if used), precautions should be taken to protect
the system from dirty water conditions. Dirty water will
result in system-wide degradation of performance, and
solids may clog valves, strainers, flow regulators, etc.
Additionally, the heat exchanger may become clogged
which reduces compressor service life and can cause
premature unit failure.

In boiler/tower application, set the loop control panel
set points to desired temperatures. Supply power to all
motors and start the circulating pumps. After full flow has
been established through all components including the
heat rejector (regardless of season), air vented and loop
temperatures stabilized, each of the units will be ready for
check, test and start up and for air and water balancing.

Ground Source Loop System Checkout

Once piping is completed between the unit pumping
system and ground loop, final purging and charging of
the loop is needed. A high pressure pump is needed to
achieve adequate flow velocity in the loop to purge air
and dirt particles from the loop itself. Antifreeze solution
is used in most areas to prevent freezing. Flush the
system adequately to remove as much air as possible;
then pressurize the loop to a static pressure of 40-50
PSI (summer) or 50-75 PSI (winter). This is normally
adequate for good system operation. Loop static pressure
may decrease soon after initial installation, due to pipe
expansion and loop temperature change. Running the
unit for at least 30 minutes after the system has been
completely purged of air will allow for the “break-in”
period. It may be necessary to adjust static loop pressure
(by adding water) after the unit has run for the first time.
Loop static pressure will also fluctuate with the seasons.
Pressures will be higher in the winter months than during
the cooling season. This fluctuation is normal and should be
considered when charging the system initially.

Ensure the pump provides adequate flow through the unit
by checking pressure drop across the heat exchanger.
Usually 2.25-3.0 gpm of flow per ton of cooling capacity is
recommended in earth loop applications.

14

Open Loop Ground Water Systems

VERSATEC BASE SERIES INSTALLATION MANUAL

Typical open loop piping is shown below. Always maintain
water pressure in the heat exchanger by placing water
control valves at the outlet of the unit to prevent mineral
precipitation. Use a closed, bladder-type expansion tank
to minimize mineral formation due to air exposure. Insure
proper water flow through the unit by checking pressure
drop across the heat exchanger and comparing it to the
figures in unit capacity data tables in the specification
catalog. 1.5-2 gpm of flow per ton of cooling capacity is
recommended in open loop applications. Due to only minor
differences in flow rate from low to high, only one solenoid
valve should be used. The valve should be sized for full flow.

Open System - Groundwater Application

Unit Supply

Aux. Heat Supply

Flexible
Duct Collar

Rubber Bladder
Expansion Tank

Solenoid

Valve

Drain

Disconnects

(IfApplicable)

Compressor
Line Voltage

Low Voltage

to Thermostat

and Valve

P/T Plugs

Vibration

Absorbing Pad

Strainer

Boiler Drains

For HX Flushing

Shut Off Valves

(to isolate solenoid

valve while acid flushing)

Discharge water from the unit is not contaminated in any
manner and can be disposed of in various ways, depending
on local codes, i.e. recharge well, storm sewer, drain field,
adjacent stream or pond, etc. Most local codes forbid
the use of sanitary sewer for disposal. Consult your local
building and zoning departments to assure compliance in
your area.

Flow Control

Valve

(on outlet of

Solenoid Valve)

Water Out

Water In

Shut Off Valves

15

VERSATEC BASE SERIES INSTALLATION MANUAL

Freeze Detection

For Aurora Base Control, set SW2-1, FP1, on the printed
circuit board for applications using a closed loop antifreeze
solution to 15°F [-9.4°C]. On applications using an open
loop/ground water system (or closed loop no antifreeze), set
this dip switch to 30°F [-1.1°C], the factory default setting.
(Refer to the Dip Switch Field Selection table).

Electrical Connections

General

Be sure the available power is the same voltage and phase
as that shown on the unit serial plate. Line and low voltage
wiring must be done in accordance with local codes or the
National Electric Code, whichever is applicable.

Power Connection

Connect the incoming line voltage wires to L1 and L2 of the
contactor for single-phase unit. Consult the Electrical Data
tables for correct fuse sizes.

Aurora Base Control Box

208 Volt Operation

All Versatec Base Series 208/230 units are factory wired
for 230 volt operation. For 208 volt operation, the red and
blue transformer wires must be switched on terminal strip PS.

CAUTION: When installing a unit with a
variable speed ECM blower motor in 460/60/3
voltage, a neutral wire is required to allow
proper unit operation.

16

Electrical Data

PSC Motor

Model

006

009

012

015

018

024

030

036

042

048

060

070

HACR circuit breaker in USA only

Rated

Voltage

115/60/1 104/127 9.5 6.1 29.0 1.5 7.6 9.1 15

208-230/60/1 198/253 4.7 3.0 15.0 0.6 3.6 4.4 10/15

265/60/1 238/292 4.2 2.7 11.0 0.6 3.3 4.0 10/15

115/60/1 104/127 12.5 8.0 50.0 1.5 9.5 11.5 15

208-230/60/1 198/253 6.4 4.1 21.0 0.6 4.7 5.7 10/15

265/60/1 238/292 6.7 4.3 22.0 0.6 4.9 6.0 10/15

115/60/1 104/127 14.8 9.5 50.0 1.5 11.0 13.4 20

208-230/60/1 198/253 7.7 4.9 25.0 0.6 5.5 6.7 10/15

265/60/1 238/292 70 4.5 22.0 0.6 5.1 6.2 10/15

208-230/60/1 198/253 9.2 5.9 29.0 1.1 7.8 9.5 15

265/60/1 238/292 7.8 5.0 28.0 1.0 6.6 8.0 10/15

208-230/60/1 198/253 10.4 6.7 33.5 1.1 7.8 9.5 15

265/60/1 238/292 8.7 5.6 28.0 1.0 6.6 8.0 10/15

208-230/60/1 198/253 13.0 7.4 43.0 1.2 8.6 10.5 15

265/60/1 238/292 12.6 6.7 46.0 1.1 7.8 9.5 15

208-230/60/3 187/253 13.0 5.9 63.0 1.2 7.1 8.6 10/15

460/60/3 414/506 6.0 2.9 30.0 0.6 3.5 4.2 10/15

208-230/60/1 198/253 17.5 9.4 54.0 1.5 10.9 13.3 20

265/60/1 238/292 14.0 8.0 46.0 1.5 9.5 11.5 15

208-230/60/3 187/253 13.5 6.6 63.0 1.5 8.1 9.8 15

460/60/3 414/506 6.4 3.2 30.0 1.0 4.2 5.0 10/15

208-230/60/1 198/253 20.5 11.6 74.0 2.2 13.8 16.7 25

265/60/1 238/292 17.7 9.9 67.0 1.1 11.0 13.5 20

208-230/60/3 187/253 13.5 7.4 68.0 2.2 9.6 11.5 15

460/60/3 414/506 7.1 3.8 34.0 1.1 4.9 5.9 10/15

208-230/60/1 198/253 25.0 13.0 88.0 3.5 16.5 19.8 30

208-230/60/3 187/253 14.5 8.6 68.0 3.5 12.1 14.3 20

460/60/3 342/506 7.7 4.2 34.0 1.8 6.0 7.1 10/15

575/60/3 517/633 6.0 3.5 28.0 1.4 4.9 5.8 10/15

208-230/60/1 198/253 24.5 15.7 84.0 3.5 19.2 23.1 35

208-230/60/3 187/253 17.5 11.0 88.0 3.5 14.5 17.3 25

460/60/3 342/506 8.0 5.6 44.0 1.8 7.4 8.8 10/15

575/60/3 517/633 7.0 4.4 36.0 1.9 5.8 6.9 10/15

208-230/60/1 198/253 33.0 21.1 105.0 5.9 27.0 32.3 50

208-230/60/3 187/253 22.0 12.9 88.0 5.9 18.8 22.0 30

460/60/3 342/506 12.0 6.7 55.0 3.0 9.7 11.4 15

575/60/3 517/633 7.5 5.1 36.0 1.9 7.0 8.3 10/15

208-230/60/1 198/253 36.0 23.0 130.0 5.9 28.9 34.7 50

208-230/60/3 187/253 24.6 14.3 110.0 5.9 20.2 23.8 35

460/60/3 342/506 11.5 7.1 55.0 3.0 10.1 11.9 15

575/60/3 517/633 8.7 5.6 43.0 1.9 7.5 8.9 10/15

Voltage

Min/Max

VERSATEC BASE SERIES INSTALLATION MANUAL

Compressor

MCC RLA LRA

Blower

Motor

FLA

Total

Unit

FLA

Min
Circ

Amp

Max

Fuse/

HACR

10/03/12

17