McQuay TGZ 040A Installation Manual

Installation Manual

Group: Chiller
Part Number: 331975501
Effective: October 2008
Supersedes: New

Templifier® Heat Recovery Water Heaters

TGZ 040A to TGZ 190A, Packaged Water Heater
600 to 3100 MBH
R134a

50/60 Hz

IM TGZ

TABLE OF CONTENTS

Introduction .........................................2

General Description...............................

Nomenclature.........................................

2
2

Inspection ..............................................2

Installation............................................

Handling ................................................

3

3

Moving the Unit ....................................3

Location.................................................4

Vibration Isolators.................................5

Water Piping........................................7

General ..................................................7

Source Water Piping..............................8

Source/Hot Water Thermostat...............

Flow Switch...........................................

8

9

Glycol Solutions..................................10

Condenser Water Piping......................10

Heating and Cooling Units..................11

Water Pressure Drop............................11

TGZ Scroll...........................................12

Dimensional Data...........................16

Weights............................................24

Physical Data..................................25

TGZ Scroll.......................................25

Unit Components ...........................29

Wiring.............................................31

Electrical Data................................33

Start-Up and Shutdown.................41

Pre Start-up ......................................41

Start-up.............................................41

Extended Shutdown.........................42

Start-up after Extended Shutdown...42

General............................................42

Electrical Terminals.........................43

Operating Limits..............................43

Compressor Oil................................44

Sightglass and Moisture Indicator ...44

Troubleshooting Chart..................45

HAZARD IDENTIFICATION INFORMATION

!

DANGER

Dangers indicate a hazardous situation which will result in death or serious injury if not avoided.

!

WARNING

Warnings indicate potentially hazardous situations, which can result in property damage,

severe personal injury, or death if not avoided.

!

CAUTION

Cautions indicate potentially hazardous situations that can result in personal injury or equipment

damage if not avoided.

Manufactured in an ISO Certified facility

©2008 McQuay International. Illustrations and data cover the McQuay International product at the time of publication and we reserve the right to make

changes in design and construction at anytime without notice. ™® The following are trademarks or registered trademarks of their respective companies:
BACnet from ASHRAE;
license granted by Echelon Corporation; Modbus from Schneider Electric; MicroTech II and Open Choices from McQuay International

LONMARK, LonTalk, LONWORKS, and the LONMARK logo are managed, granted and used by LONMARK International under a

1 TGZ 040A through TGZ 190A IM TGZ

Introduction

General Description

McQuay TGZ water heaters are scroll compressor refrigeration units that recover heat from warm fluid streams in
the evaporator and deliver hot water, at a useful temperature, from the condenser to a heating load. They are
designed for indoor installations only and are completely assembled, wired, charged and tested. Each unit consists
of four or six (depending on unit size) scroll compressors, brazed-plate evaporators on models 040 through 120
and shell-and-tube evaporators on models 150 to 190, shell-and-tube condenser/heater, and complete refrigerant
piping.

There are two refrigerant circuits, each with manual liquid line shutoff valves, charging valves, filter-driers, liquid
line solenoid valves, sightglass/moisture indicators, and thermal expansion valves.

®

The electrical control center includes a MicroTech II
dependable automatic operation.

Nomenclature

T G Z 100 A

Templifier

Global

control system and other components necessary for

Vintage

Scroll Compressor

Nominal
Evaporator Tons

Inspection

When the equipment is received, all items should be carefully checked against the bill of lading to provide a
complete shipment. All units must be carefully inspected for damage upon arrival. All shipping damage must be
reported to the carrier and a claim must be filed with the carrier. The unit serial plate should be checked before
unloading the unit to be sure that it agrees with the power supply available. Physical damage to unit after
acceptance is not the responsibility of McQuay.

Note: Unit shipping and operating weights are given in the Physical Data Tables beginning on page

24.

IM TGZ TGZ 040A through TGZ 190A 2

Installation

TGZ040-190A / WGZ030-200C

Note: Installation and maintenance are to be performed only by qualified personnel who are
familiar with local codes and regulations, and experienced with this type of equipment.

!

WARNING

Avoid contact with sharp edges. Personal injury can result.

Handling

Every model TGZ water heater is shipped with a full refrigerant charge that is isolated in the condenser by the
manual condenser liquid valve and the compressor discharge service valve.

If the unit has been damaged, allowing the refrigerant to escape, there can be danger of suffocation in the
equipment area since the refrigerant will displace the air. Be sure to review Environmental Protection Agency
(EPA) requirements if damage has occurred. Avoid exposing an open flame to the refrigerant.

Moving the Unit

Moving the Unit The skid option is strongly recommended for ease of handling and to help prevent damage

if a crane is not available for rigging at site.

Figure 1, Lifting the Unit

RIGGING INSTRUCTIONS

SPREADER BARS MUST

BE USED FOR STABILITY

DURING LIFTING OF

ALL SIZE UNITS

WGZ150-200C
UNIT SHOWN

3 TGZ 040A through TGZ 190A IM TGZ

331926901 REV. 0A

It is recommended that all moving and handling be performed with skids under the unit when possible and that the
skids not be removed until the unit is in the final location. When moving the unit, dollies or simple rollers can be
used under the skids. Never put the weight of the unit against the control box.

In moving, always apply pressure to the base on the skids only and not to the piping or shells. A long bar will help
move the unit easily. Avoid dropping the unit at the end of the roll.

If the unit must be hoisted, it is necessary to lift the unit by attaching cables or chains at the lifting holes located on
the disposable lifting bars. Spreader bars must be used to protect the control cabinet and other areas of the unit (see

Figure 1)

Do not attach slings to piping or equipment. Move unit in the upright horizontal position at all times. Set unit down
gently when lowering from the trucks or rollers.

Location

The unit is designed for indoor application and must be located in an area where the ambient temperature is above
40°F (4°C) minimum.

Because of the electronic control devices, the units should not be exposed to the weather. A plastic cover over the
control box is supplied as temporary protection during shipment. A reasonably level and sufficiently strong floor is
required for the unit. If necessary, additional structural members should be provided to transfer the weight of the unit
to the nearest beams.

Note: Unit shipping and operating weights are available in the Weights section beginning on page

24.

Space Requirements for Connections and Servicing

Allow a minimum of 4-foot clearance in front of the control panel. The source water and hot water piping enters and
leaves the unit from the right side when looking at the control panel. Left-hand condenser connections are an option.
A clearance of at least 3 feet (1219 mm), or more if codes require, should be provided beyond this piping and on all
other sides and ends of the unit for general servicing or for changing the compressors, if it ever becomes necessary.

Clearance should also be provided for cleaning or removal of condenser tubes, and evaporator tubes on models 150
to 190, on one end of the unit. The clearance for cleaning depends on the type of apparatus used, but can be as much
as the length of the largest condenser (12 feet, 3660 mm). Tube replacement requires the tube length plus one to two
feet of workspace. This space can often be provided through a doorway or other opening.

Placing the Unit

The small amount of vibration normally encountered with the water chiller makes this unit particularly desirable for
basement or ground floor installations where the unit can be mounted directly to the floor. The floor construction
should be such that the unit will not affect the building structure, or transmit noise and vibration into the structure.

IM TGZ TGZ 040A through TGZ 190A 4

Vibration Isolators

It is recommended that isolators be used on all upper level installations or in areas where vibration transmission
is a consideration.

Figure 2, Isolator Locations

4

LB

RB

3

Water
Connections

Transfer the unit as indicated under “Moving the Unit.” In
all cases, set the unit in place and level with a spirit level.
When spring-type isolators are required, install springs
running under the main unit supports.

1

LF

FRF

2

The unit should be set initially on shims or blocks at the
listed spring free height. When all piping, wiring, flushing,

Control Panel

charging, etc., is completed, the springs are adjusted upward

to loosen the blocks or shims that are then removed.
A rubber anti-skid pad should be used under isolators if hold-down bolts are not used.
Installation of spring isolators requires flexible piping connections and at least three feet of flexible electrical

conduit to avoid straining the piping and transmitting vibration and noise

.

Table 1, Vibration Mounting Location and Kit Number

TGZ

MODEL

040A

050A

060A

080A

M1

(LEFT-

FRONT)

RP-3

Gray-WR

RP-3

Gray-WR

RP-3

Gray-WR

RP-4

Brown-WR

R-I-S MOUNTING LOCATION SPRING-FLEX MOUNTING LOCATION

M2
(RIGHT­FRONT)

RP-3

Gray-WR

RP-3

Gray-WR

RP-3

Gray-WR

RP-4

Brown-WR

M3

(RIGHT-

REAR)

RP-3

Gray-WR

RP-3

Gray-WR

RP-3

Gray-WR

RP-4

Brown-WR

M4
(LEFT­REAR)

RP-3

Gray-WR

RP-3

Gray-WR

RP-3

Gray-WR

RP-4

Brown-WR

KIT PART

NUMBER

332325701

332325701

332325701

332325702

M1

(LEFT-

FRONT)

CP1E-

ID-900

Dk. Green

CP1E-

ID-900

Dk. Green

CP1E-

ID-900

Dk. Green

CP2E-

ID-1350

Dk. Purple

M2
(RIGHT­FRONT)

CP1E­ID-900

Dk. Green

CP1E­ID-900

Dk. Green

CP1E­ID-900

Dk. Green

CP2E-

ID-1350

Dk. Purple

M3

(RIGHT-

REAR)

CP1E-

ID-900

Dk. Green

CP1E-

ID-900

Dk. Green

CP1E-

ID-900

Dk. Green

CP2E-

ID-1350

Dk. Purple

M4
(LEFT­REAR)

CP1E-

ID-900

Dk. Green

CP1E-

ID-900

Dk. Green

CP1E-

ID-900

Dk. Green

CP2E-

ID-1350

Dk. Purple

KIT PART

NUMBER

332320701

332320701

332320701

332320702

100A

110A

120A

150A

170A

190A

RP-4

Brown-WR

RP-4

Red-WR

RP-4

Red-WR

RP-4

Lime-WR

RP-4

Lime-WR

RP-4

Lime-WR

RP-4

Brown-WR

RP-4

Red-WR

RP-4

Red-WR

RP-4

Lime-WR

RP-4

Lime-WR

RP-4

Lime-WR

RP-4

Brown-WR

RP-4

Red-WR

RP-4

Red-WR

RP-4

Lime-WR

RP-4

Lime-WR

RP-4

Lime-WR

RP-4

Brown-WR

RP-4

Red-WR

RP-4

Red-WR

RP-4

Lime-WR

RP-4

Lime-WR

RP-4

Lime-WR

332325702

332325703

332325703

332325704

332325704

332325704

CP2E-

ID-1800

Dk. Green

CP2E-

ID-1800

Dk. Green

CP2E-

ID-1800

Dk. Green

CP2E-

ID-2400

Gray

CP2E-

ID-2400

Gray

CP2E-

ID-2400

Gray

CP2E-

ID-1800

Dk. Green

CP2E-

ID-1800

Dk. Green

CP2E-

ID-1800

Dk. Green

CP2E-

ID-2400

Gray

CP2E-

ID-2400

Gray

CP2E-

ID-2400

Gray

CP2E-

ID-1800

Dk. Green

CP2E-

ID-1800

Dk. Green

CP2E-

ID-1800

Dk. Green

CP2E-

ID-2400

Gray

CP2E-

ID-2400

Gray

CP2E-

ID-2400

Gray

CP2E-

ID-1800

Dk. Green

CP2E-

ID-1800

Dk. Green

CP2E-

ID-1800

Dk. Green

CP2E-

ID-2400

Gray

CP2E-

ID-2400

Gray

CP2E-

ID-2400

Gray

332320703

332320703

332703703

332320704

332320704

332320704

NOTE: For Spring-flex mountings, CP2E have two springs per isolator housing, CP1E have one spring per housing.

5 TGZ 040A through TGZ 190A IM TGZ

Figure 3, Isolator Dimensions

6

D

S

E

A

Spring Flex Mounting. CP-2 Spring Flex Mounting, CP-1

Rubber-in-Shear Mounting, RP-3

1/2-13 TAP

ø3.38

ø.5

2 HOL

Rubber-in-Shear, RP-4

6.25

5.00

3.75

3.00

R4

ø .500-13NC-2B

LOCA TING PIN TO
BE INSTALLED HERE

MOUNTING MOLDED IN
DURULENE. WEATHER
RESISTANT (WR)

1.75 (R)

.25

4.13

5.50

DRAWING NUMBER 3319880

ALL DIMENSION

2.50

ARE IN DECIMAL INCH

3.87
.56 TYP.

DURULENE

MATERIAL

NOTES:

MOUNT MATERIAL TO BE DURULENE RUBBER.1.
MOLDED STEEL AND ELASTOMER MOUNT FOR2.

OUTDOOR SERVICE CONDITIONS.

3. RP-4 MOUNT VERSION WITH STUD IN PLACE.

VM&C

RECESSED
GRIP RIBS

VM&C

R4

1.13 ± .25
APPROX.

RAISED GRIP RIBS

DRAWING NUMBER 3314814

LL DIMENSIONS ARE IN DECIMAL INCHES

R.28
TYP.

R.250 TYP.

R.750 TYP.

.38

4.63

1.63

IM TGZ TGZ 040A through TGZ 190A 6

Water Piping

General

Due to the variety of piping practices, it is advisable to follow the recommendations of local authorities. They can
supply the installer with the proper building and safety codes required for a safe and proper installation.

Note: Since the Templifier evaporator and/or condenser may have to be valved off for cleaning or repair, it may
be essential that a bypass be piped around them so that source and hot water flow is not interrupted.

The piping should be designed with a minimum number of bends and changes in elevation to keep system cost
down and performance up. It should contain:

1. All piping should be installed and supported to prevent the unit connections from bearing any strain or

weight of the system piping.

2. Vibration eliminators to reduce vibration and noise transmission to the building.

3. Shutoff valves to isolate the unit from the piping system during unit servicing.

4. Manual or automatic air vent valves at the high points of the system. Drains should be placed at the

lowest points in the system.

5. Some means of maintaining adequate system water pressure (e.g., expansion tank or regulating valve).

6. Temperature and pressure indicators located within 3 feet (0.9 meters) of the inlet and outlet of the

vessels to aid in unit servicing.

7. A strainer or some means of removing foreign matter from the water before it enters the pump is

recommended. It should be placed far enough upstream to prevent cavitation at the pump inlet (consult
pump manufacturer for recommendations). The use of a strainer will prolong pump life and thus keep
system performance up.

8. A cleanable strainer must

condenser, 40-mesh on models TGZ 040 to 120 evaporators and 20-mesh on all other vessels. This will
aid in preventing foreign material from entering and decreasing the performance of the evaporator and
condenser.

9. Any water piping to the unit must be protected to prevent freezing. Consult the ASHRAE handbook for

standard industry practice.

10. If the unit is used in an existing piping system, the system should be thoroughly flushed prior to unit

installation. When job conditions permit, regular water analysis and chemical water treatment on the
evaporator and condenser is recommended commencing at equipment start-up.

11. The total quantity of water in the evaporator and condenser systems should be sufficient to prevent

frequent “on-off” cycling. For closed loop applications where the cooling load changes relatively
slowly, a minimum system volume of two to three minutes times the flow
recommended. For example, if the design chiller flow rate is 120 gpm, we recommend a system

volume of 240 to 360 gallons.

12. In the event glycol is added to the water system, as an afterthought for freeze protection, recognize that

the refrigerant suction pressure will be lower, cooling and heating performance lower, and water side
pressure drop will be greater. If the percentage of glycol is large, or if propylene is employed instead of
ethylene glycol, the added pressure drop and loss of performance could be substantial. Reset the
freezestat and low leaving water alarm temperatures. The freezestat is factory set to default at 36°F
(2.2°C). Reset the freezestat setting to approximately 4° to 5°F (2.3° to 2.8°C) below the leaving
chilled water setpoint temperature. See the section titled “Glycol Solutions” on page
information concerning glycol.

13. A preliminary leak check of the water piping should be made before filling the system.

A flow switch must be installed in the horizontal piping of the evaporator and condenser outlet

also be placed in the water lines just prior to the inlets of the evaporator and

rate (GPM) is

10 for additional

!

CAUTION

piping to prove water flow..

7 TGZ 040A through TGZ 190A IM TGZ

Source Water Piping

r

The system water piping must be flushed thoroughly prior to making connections to the unit evaporator. Lay out
the water piping so the source water circulating pump discharges into the evaporator inlet.

!

CAUTION

A cleanable strainer must be placed in the water lines just prior to the inlets of the evaporator and

condenser, 40-mesh on models 040 to 120 evaporators and 20-mesh on all other vessels. Failure

to do so will cause damage to the equipment.

!

CAUTION

Templifier Models TGZ 040 through TGZ 120 must have clean source water from a closed and
treated loop going to the brazed-plate evaporator. For open water loop applications, an intermediate
heat exchanger between the source water and evaporator is required. Failure to provide a clean,
closed water loop can cause equipment failure and possible revocation of the unit warranty.

Templifier evaporator water can come from various sources and care must be exercised to avoid sources that can
cause corrosion, fouling, or accumulation of debris in the heat exchanger. Borderline cases will require a careful
and rigorously performed maintenance schedule.

Extensive, detailed information on the suitability of source water for brazed-plate exchangers can be found in an
Alfa Laval, June 2001 publication titled A Technical Reference for Plate Heat Exchangers in Refrigeration & Air-
conditioning Applications

Table 2, Evaporator Characteristics

TGZ UNIT SIZE EVAPORATOR MATERIALS STRAINER CLEANING

040A – 120A Brazed Plate Stainless Steel, Coppe
150A – 190A Shell-and-Tube Carbon Steel, Copper 20-Mesh Chemical

40-Mesh Chemical

Inlet and outlet connections are clearly marked on the unit and also appear on the dimension drawings, beginning
on page

16.

Drain connections should be provided at all low points in the system to permit complete drainage. Air vents
should be located at the high points in the system to purge out air. A vent connection, located on top of the
evaporator vessel, permits the purging of air out of the evaporator. Air purged from the water system prior to unit
start-up provides adequate flow through the vessel and prevents safety cutouts on the freeze protection. System
pressures can be maintained by using an expansion tank as a combination pressure relief and reducing valve.

Pressure gauges should be installed in the inlet and outlet water lines to the evaporator. Pressure drop through the
evaporator should be measured to calculate proper gpm (L/s) as specified in the Physical Data section tables,
beginning on page

25. Vibration eliminators are recommended in both the supply and return water lines.

Source water piping may have to be insulated (depending on its temperature) to reduce heat loss and prevent
condensation if cold water is used. If cooling tower water is used, insulation is not necessary. Complete unit and
system leak tests should be performed prior to insulating the water piping. Insulation with a vapor barrier is
recommended. If the vessel is insulated, the vent and drain connections must extend beyond the proposed
insulation thickness for accessibility. If the unit operates year-round, or if the system is not drained for the winter,
the chilled water piping exposed to outdoor ambient should be protected against freezing by wrapping the lines
with a heater cable.

Source/Hot Water Thermostat

The source water temperature sensor is factory installed in the leaving water connection on the evaporator. The
controlling hot water sensor is in the leaving condenser connection. A sensor is also located in the entering

IM TGZ TGZ 040A through TGZ 190A 8

water connection in order to measure the condenser Delta-T. Care should be taken not to damage the sensor

V

cable or leadwires when working around the unit. It is also advisable to check the leadwire before running the
unit to be sure that it is firmly anchored and not rubbing on the frame or any other component.

If the sensor is ever removed from the well for servicing, care must be taken as not to wipe off the heat
conducting compound supplied in the well. The units can be switched from heating to cooling. In the cooling
mode they are controlled by a thermostat in the leaving evaporator connection, in the heating mode by the
condenser thermostat.

Flow Switch

A water flow switch must be mounted in the evaporator and condenser leaving water lines to prove adequate
water flow to the vessels before the unit can start. This will safeguard against slugging the compressors on
start-up. It also serves to shut down the unit in the event that water flow is interrupted to guard against
evaporator freeze-up.

A flow switch is available from McQuay under ordering number 01750330. It is a “paddle” type switch and
adaptable to any pipe size from 1” (25mm) to 6” (152mm) nominal. Certain minimum flow rates are required
to close the switch and are listed in
Diagram on page

32 for terminal locations. The normally open contacts of the flow switch should be wired
between these two terminals. There is also a set of normally closed contacts on the switch that could be used
for an indicator light or an alarm to indicate when a “no flow” condition exists.

1. Apply pipe sealing compound to only the threads of the switch and screw unit into D” x D” x 1 (25mm)

reducing tee (see

Figure 4). The flow arrow must be pointed in the correct direction.

2. Provide a straight length of pipe before and after the flow switch of at least five times the pipe diameter.

3. Trim flow switch paddle if needed to fit the pipe diameter. Make sure paddle does not hang up in pipe.

Table 3. Installation should be as shown on page 9. See the Field Wiring

!

CAUTION

Make sure the arrow on the side of the switch is pointed in the direction of flow. Install per manufacturer’s
instructions. Incorrect installation will cause improper operation and possible evaporator damage.

Table 3, Flow Switch Minimum Flow Rates

Nominal Pipe Size

Inches (mm)

2 (50.8) 18.8 (1.2)

2 1/2 (63.5) 24.3 (1.5)

3 (76.2) 30.0 (1.9)
4 (101.6) 39.7 (2.5)
5 (127.0) 58.7 (3.7)
6 (152.4) 79.2 (5.0)

Minimum Required Flow to
Activate Switch – GPM (l/s)

Figure 4, Flow Switch

iew From End of CoolerFlow Switch

Flow Switch

Paddle

1

(25)

(51)

Pipe Section

D” x 5D”

2

3

(76)

From

Evaporator

Flow
Direction

Flow

Straight Pipe
for at Least 5D”

Tee
D” x D” x 1”

9 TGZ 040A through TGZ 190A IM TGZ

Glycol Solutions

T

The use of glycol in Templifier systems is rare but if used, the system glycol capacity, glycol solution flow rate in
gpm (lps), pressure drop through the cooler, and system pressure drop can be calculated using the following
formulas and table.

1. Capacity — Capacity is reduced from that with plain water. To find the reduced value multiply the unit’s

water system capacity by the capacity correction factor C, as shown in
capacity in the glycol system.

2. GPM —To determine evaporator gpm (or ΔT) knowing ΔT (or gpm) and capacity:

GPMGlycol

24

=

CapacityGlycolx

Δ

FromTablesGx

3. Pressure Drop — To determine glycol pressure drop through the cooler, enter the proper water pressure drop

curve, beginning on page

11, at the water flow. Multiply the water pressure drop found there by P to obtain

corrected glycol pressure drop.

4. To determine glycol system kW, multiply the water system kW by factor K.

Test coolant with a clean, accurate glycol solution hydrometer (similar to that found in service stations) to
determine the freezing point. Obtain percent glycol from the freezing point table below.

McQuay encourages a minimum glycol concentration of 25% be provided on all glycol applications. Glycol
concentrations below 25% have too little inhibitor content for long-term corrosion protection of ferrous metals.

Note: The effect of glycol in the condenser is negligible and there is no capacity derate. There is a
significant increase in pressure drop.

Table 4 and Table 5, to find the unit’s

Table 4, Ethylene Glycol

Glycol

20 18 -8 0.982 0.992 1.040 1.129
30 7 -14 0.972 0.986 1.074 1.181
40 -7 -22 0.961 0.976 1.121 1.263
50 -28 -33 0.946 0.966 1.178 1.308

Freezing Point Percent

°F °C

C (Capacity) K (Power) G (Flow)

P (Pressure

Drop)

Table 5, Propylene Glycol

Percent

Glycol

20 19 -7 0.975 0.985 1.028 1.147
30 9 -13 0.962 0.978 1.050 1.248
40 -5 -21 0.946 0.971 1.078 1.366
50 -27 -33 0.929 0.965 1.116 1.481

Freezing Point C (Capacity) K (Power) G (Flow)

°F °C

P (Pressure

Drop)

!

CAUTION

Do not use automotive grade antifreeze. Industrial grade glycols must be used. Automotive antifreeze contains
inhibitors which all cause plating on the copper within the unit evaporator. The type and handling of glycol used
must be consistent with local codes.

Condenser Water Piping

Arrange the condenser water so the water enters the bottom connection of the condenser. The condenser water
will discharge the condenser from the top connection. Failing to arrange the condenser water as stated above will
negatively affect the capacity and efficiency. Note that the condensers are shipped as either two-pass (10 to 20­degree Delta-T) or four-pass (20 to 40-degree Delta-T). For 2-pass, the connections are on the vertical centerline
of the condenser. For 4-pass, they are off to one side.

Pressure gauges should be installed in the inlet and outlet water lines to the condenser. Pressure drop through the
condenser should be measured to determine gpm (L/s) from pressure drop curves on page
eliminators are recommended in both the supply and return water lines.

11. Vibration

IM TGZ TGZ 040A through TGZ 190A 10

Templifier hot water systems usually have a supplementary heater located after (downstream) of the
Templifier condenser to either boost the hot water temperature or to function as a standby heater.

Care should be exercised to avoid overly warm water coming back to the Templifier from the system and
causing a relief valve discharge. This is true whether the unit is running or off. Maximum temperature is 165°F

Some jurisdictions require double heat exchange walls between refrigerant and potable water. Potable water
run directly through a condenser has only one heat exchange wall (the condenser tube) and these jurisdictions
may require an intermediate heat exchanger.

Heating and Cooling Units

Templifiers can be arranged and controlled to act as either a water chiller or a water heater. These
systems vary considerably in the specifics of the piping arrangement. Care must be exercised when
changeover occurs to avoid mixing water streams that could possibly contaminate a water system. For
example a unit can have chilled water in the evaporator and tower water in the condenser when in the
cooling mode. Changeover to heating could put tower water through the evaporator and hot water
(possibly potable water) through the condenser. This could introduce tower water into the chilled
water system and into the hot water system and should be avoided.

Water Pressure Drop

The vessel flow rates must fall between the minimum and maximum values shown on the appropriate
evaporator and condenser curves on pages
laminar flow that will reduce efficiency, cause erratic operation of the expansion valve and could cause low
temperature cutoffs. On the other hand, flow rates exceeding the maximum values shown can cause erosion on
the evaporator water connections and tubes.

Measure the water pressure drop through the vessels at field installed pressure taps. It is important not to
include valves or strainers in these readings.

The condenser flow rate will determine whether 2-pass or 4-pass condensers are used, according to the
following table:

12 to 14. Flow rates below the minimum values shown will result in

CONDENSER DELTA-T PASSES FLOW

10- to 20 Degrees F 2-Pass High Flow Rate

20 to 40 Degrees F 4-Pass Low Flow Rate

The entering water should be piped to the bottom connection of the condenser and out the top.

11 TGZ 040A through TGZ 190A IM TGZ

TGZ Scroll

Figure 5, Evaporator Pressure Drop

TGZ Evaporator Wat er Pressur e Dr op

100

10

Dp (ft)

TGZ040
TGZ050
TGZ060
TGZ080
TGZ100
TGZ110
TGZ120
TGZ150
TGZ170
TGZ190

TGZ040

TGZ060

TGZ110

TGZ100

TGZ170

TGZ190

TGZ120

TGZ150

TGZ080

TGZ050

1

10 100 1000

Flow Rate (gpm)

TGZ UNIT

MODEL

040A
050A
060A
080A
100A
110A
120A
150A
170A
190A

Note: Nominal Flow Rate is gpm for 10 F Delta-T at unit operating conditions of evaporator at 75/65 F water temp and condenser at 110/30 F water temp.

EVAPORATOR

MODEL

AC250-70DQ 34 1.1 2.1 3.2 72 4.4 4.5 13.2 120 11.6 7.6 34.7
AC250-94DQ 45 1.0 2.8 3.1 100 4.7 6.3 14.0 167 12.5 10.5 37.2

AC250-94DQ 55 1.5 3.5 4.5 121 6.7 7.6 20.0 202 17.7 12.7 53.0
AC350-162DQ 83 1.4 5.2 4.3 162 5.1 10.2 15.2 270 13.5 17.0 40.2
AC350-162DQ 98 2.0 6.2 5.8 189 6.8 11.9 20.3 315 17.9 19.9 53.6
AC350-182DQ 113 2.2 7.1 6.4 218 7.5 13.8 22.4 363 19.8 22.9 59.1
AC350-182DQ 128 2.7 8.1 8.2 246 9.5 15.5 28.4 410 25.1 25.9 74.9

EV34191111/9 147 2.4 9.3 7.3 283 8.5 17.9 25.4 472 22.5 29.8 67.1
EV34191212/7 169 3.5 10.7 10.5 326 12.2 20.6 36.5 543 32.2 34.3 96.1
EV34191212/7 192 4.5 12.1 13.4 369 15.5 23.3 46.3 615 40.9 38.8 122.3

MINIMUM FLOW RATE NOMINAL FLOW RATE MAXIMUM FLOW RATE

INCH-POUND S.I. INCH-POUND S.I. INCH-POUND S.I.

gpm ft. L/S kpa gpm ft. lps kpa gpm ft. lps kpa

IM TGZ TGZ 040A through TGZ 190A 12

Figure 6, Standard Four-pass Condenser Pressure Drop

TGZ 4-Pa ss Conde nse r Wa t er Pressur e Dr op

100

TGZ040
TGZ050
TGZ060
TGZ080
TGZ100
TGZ110
TGZ120
TGZ150

TGZ060

TGZ170
TGZ190

10

Dp (ft)

TGZ170

TGZ150

TGZ100

TGZ190

TGZ120

TGZ050

TGZ040

TGZ080

TGZ110

1

10 100 1000

Flow Rate (gpm)

UNIT

MODEL

TGZ040
TGZ050
TGZ060
TGZ080
TGZ100
TGZ110
TGZ120
TGZ150
TGZ170
TGZ190

COND.

MODEL

C1010-62 23 1.93 1.45 5.77 47 7.5 3.0 22.4 63 13.1 4.0 39.1
C1010-62 32 2.44 2.02 7.29 64 9.1 4.0 27.2 86 16.0 5.4 47.7

C1010-76 38 3.40 2.40 10.16 77 13.0 4.9 38.9 103 22.6 6.5 67.5
C1410-112 51 2.84 3.22 8.49 103 10.8 6.5 32.3 138 18.8 8.7 56.3
C1410-128 60 3.00 3.79 8.97 120 11.2 7.6 33.5 160 19.3 10.1 57.8
C1610-164 69 2.44 4.35 7.29 138 9.1 8.7 27.2 184 15.7 11.6 47.0
C1610-164 78 3.08 4.92 9.21 156 11.5 9.8 34.4 208 19.9 13.1 59.4
C1612-164 90 4.85 5.68 14.50 180 18.1 11.4 54.1 240 31.3 15.1 93.4
C1612-184 103 4.89 6.50 14.60 207 18.4 13.1 55.0 276 31.8 17.4 95.0
C1612-184 117 6.24 7.38 18.66 234 23.3 14.8 69.6 312 40.2 19.7 120.3

MINIMUM FLOW RATE NOMINAL FLOW RATE MAXIMUM FLOW RATE

INCH-POUND S.I. INCH-POUND S.I. INCH-POUND S.I.

gpm ft L/S kpa gpm ft L/S kpa gpm ft L/S kpa

13 TGZ 040A through TGZ 190A IM TGZ

Figure 7, Optional Two-pass Condenser

TGZ 2- Pass Condenser Water Pressur e Drop

100

TGZ040
TGZ050
TGZ060
TGZ080
TGZ100
TGZ110
TGZ120
TGZ150
TGZ170
TGZ190

10

Dp (ft)

TGZ060

TGZ190

TGZ150

TGZ100

TGZ170

TGZ080

TGZ050

TGZ040

TGZ120

TGZ110

1

10 100 1000

Flow Rate (gpm)

MINIMUM FLOW RATE NOMINAL FLOW RATE MAXIMUM FLOW RATE

TGZ UNIT

MODEL

TGZ040
TGZ050
TGZ060
TGZ080
TGZ100
TGZ110
TGZ120
TGZ150
TGZ170
TGZ190

COND.

MODEL.

C1010-62 59 1.6 3.7 4.9 94 4.0 5.9 12.0 150 9.8 9.5 29.3
C1010-62 80 2.0 5.0 6.0 128 4.9 8.1 14.6 205 12.0 12.9 35.8

C1010-76 96 2.9 6.1 8.5 154 7.0 9.7 20.9 246 17.0 15.5 51.0
C1410-112 129 2.4 8.1 7.1 206 5.8 13.0 17.3 330 14.2 20.8 42.3
C1410-128 150 2.5 9.5 7.3 240 6.0 15.1 17.9 384 14.7 24.2 43.8
C1610-164 173 2.0 10.9 6.0 276 4.9 17.4 14.6 442 12.0 27.9 35.8
C1610-164 195 2.5 12.3 7.6 312 6.2 19.7 18.5 499 15.1 31.5 45.3
C1612-164 225 3.3 14.2 9.9 360 8.1 22.7 24.2 576 19.8 36.3 59.1
C1612-184 259 3.5 16.3 10.4 414 8.5 26.1 25.4 662 20.8 41.8 62.1
C1612-184 293 4.4 18.5 13.2 468 10.8 29.5 32.3 749 26.4 47.2 78.8

INCH-POUND S.I.

gpm ft L/S kpa gpm ft L/S kpa gpm ft lps kpa

INCH-

POUND

S.I. INCH-POUND S.I.

IM TGZ TGZ 040A through TGZ 190A 14