Mammoth 40 Tons User Manual

Vertical Water-to-Water Heat Pumps With
R-410A

Installation, Operation and Maintenance Manual

Sizes: 064 to 480
Model: K Vintage

MAMM-WSHP-IOM-1KA (September 2011)

P/N 71144912

Table of Contents

Model Nomenclature ················································································································ 3
Transportation and Storage ···································································································· 3
Installation ································································································································ 4
Unit Location ···························································································································· 5
Piping ········································································································································ 6
Cleaning and Flushing ············································································································· 7
Start-up······································································································································ 8
Operating Limits ······················································································································· 9
Controls ··································································································································· 10
Inputs/Outputs ························································································································ 13
General Maintenance ············································································································· 14
Parts and Service Support ····································································································· 14
Troubleshooting ····················································································································· 15
Performance Troubleshooting ····························································································· 16
Unit check-out sheet ············································································································· 17

MAMM-WSHP-IOM-1KA (September 2011)

K Vintage Water-to-Water

Sizes 064 to 480

2

Model Nomenclature

F -170- W- H- K

Voltage

BTU/hr Cooling

Unit Type Temperature Range Vintage

F = 208-230/60/3
G = 460/60/3
J = 380-415/50/3
K = 575/60/3
S = 380/60/3

Illustrations cover the general appearance of Mammoth products at the time of publication and Mammoth, Inc. reserves the right to make changes
in design and construction at anytime without notice.

064 = 58,437
120 = 127,792
170 = 172,906
270 = 257,319
360 = 350,047
480 = 459,580

W = Water-to-Water H = Standard Range
L = Low Temp Operation

“Mammoth” is a registered trademark of Mammoth, Inc.

©Mammoth, Inc. 2011. All rights reserved throughout the world.



Transportation and Storage

Upon receipt of the equipment, check for visible dam­age. Make a notation on the shipper’s delivery ticket
before signing. If there is any evidence of rough han­dling, immediately check for concealed damage. If any
damage is found, notify the carrier within 48 hours to
establish your claim and request their inspection and a
report. Then contact the Mammoth Service department

at [phone] or [e-mail]
for a warranty claim number.

MAMM-WSHP-IOM-1KA (September 2011)

Do not stand or transport the unit on its side. In the
event that elevator transfer makes horizontal position­ing unavoidable, absolutely ensure that the unit is in
the normal upright position for at least 24 hours before
operating.

Temporary storage at the job site must be indoors,
completely sheltered from rain, snow, etc. High or low
temperatures naturally associated with weather pat­terns will not harm units. But excessively high tempera­tures, 140°F (60°C) and higher, may deteriorate certain
plastic materials and cause permanent damage.

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Installation

General

IMPORTANT:

Mammoth water source heat pumps should be in­stalled only by qualified personnel, experienced in the
installation of this equipment and related systems.
Read these instructions carefully before unpacking,
installing and operating this unit.

1. To prevent damage, this equipment should not be
operated during the construction period.

2. Inspect the unit for any specific tagging numbers
indicated by the factory per a request from the in­stalling contractor.

3. Check the unit nameplate for the size and voltage
rating and confirm against the plans that the unit is
being installed in the correct location.

4. Verify the installation location with the piping and
electrical contractors prior to installation.

5. Verify all clearances are available for the unit prior
to installation.

6. Note the location and routing of water piping and
electrical wiring. The locations of these items are
clearly marked on the submittal drawings.

7. Mammoth recommends the unit be covered during
construction to protect components from dust and
other harmful materials. This is critical while spray­ing fireproofing material on bar joists, sandblasting,
spray painting and plastering.

NOTE:

Check the unit name plate for correct voltage with the
plans before installing the equipment. Make sure all
electrical ground connections are made in accordance
with local code.

MAMM-WSHP-IOM-1KA (September 2011)

4

Unit Location

Locate the unit in an area that allows for easy removal
of the compressor and control box access panels. The
diagram below shows minimum suggested clearances.
Any additional clearances would be beneficial, but not
always necessary.

The requirements on any specific unit may increase or
be reduced depending on several factors such as
maintenance requirements and mechanical or electrical
installation codes.

Service Clearances

The electrical connections are accessible from the
front. The compressor can be accessed from either
side. There are no air filter, ductwork or ventilation air

requirements for K-Vintage water-to-water units.

MAMM-WSHP-IOM-1KA (September 2011)

5

Unit Piping

1. All K-Vintage heat pumps should be connected to
supply and return piping in a two-pipe reverse
return configuration. A reverse return system is
inherently self-balancing and requires only trim
balancing where multiple quantities of heat pumps
with different flow and pressure drop characteristics
exist in the same loop. Check for proper water
balance by measuring differential temperature
reading across the water connections. To verify
proper water flow, the differential temperature
should be between 7°F to 10°F for heat pumps in
the cooling mode or heating mode.

2. The piping may be steel, copper, or PVC. Avoid
dissimilar metal fittings as they may corrode. If the
use of dissimilar metals is unavoidable, use
dielectric isolation at that connection point. We
recommend a 30 mesh strainer (supplied by
others) be mounted prior to the water inlet to the
unit.

3. Supply and return run-outs usually join the heat
pump via short lengths of flexible hose which that
can be sound attenuators for hydraulic pumping
noise. Make sure hoses and pipes are suitable for

system water pressure and sized for proper flow
rate. Never use flexible hoses that are smaller
(inside diameter) than that of the water connection
on the unit. One end of the hose should have a

swivel fitting to facilitate removal for service. Hard
piping can also be brought directly to the heat
pump. This option is not recommended since no
vibration or noise attenuation can be accomplished.
The hard piping must have a union to facilitate heat
pump removal.

4. The supply and the discharge pipes should be

insulated to prevent condensation damage caused
by low water temperature in the pipes.

5. Make sure that threaded fittings are sealed. Teflon
tape can be used to provide a tight seal.

6. Supply and return shutoff valves are required at
each heat pump. All flow valves should be ball

type. The return valve is used for balancing and

should have a “memory stop” so that it can always
be closed off but can only be reopened to the
proper position for the flow required. To avoid

water hammer during start-up or shut down,
solenoid vales of the slow closing diaphragm type
should be used. Placing the solenoid valve on the
outlet side of the system helps relieve this situation.
Due to high pressure drop or poor throttling
characteristics, globe and gate valves should not
be used.

7. No heat pump should be connected to the supply
and return piping until the water system has been
cleaned and flushed completely. After the cleaning
and flushing has taken place, the initial connection
should have all valves wide open in preparation for
the water system flushing.

MAMM-WSHP-IOM-1KA (September 2011)

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