Mammoth 2-6 Tons User Manual

High Efficiency, Superior Indoor Air Quality
Single Circuit Water Source Heat Pumps

Installation, Operation and Maintenance Manual

Sizes: 024 to 072 — Vertical
Model: B-Vintage

MAMM-WSHP-IOM-1BA (February 2012)

P/N 71144915

Table of Contents

Model Nomenclature ·················································································································· 3
Transportation and Storage ········································································································ 3
Installation ·································································································································· 4
Discharge Conversion—Horizontal Units ··················································································· 4
Unit Location and Clearances ···································································································· 5
Unit Mounting ····························································································································· 6
Ductwork and Attenuation ·········································································································· 7
Ventilation Air ····························································································································· 7
Piping ········································································································································· 8
Cleaning and Flushing ················································································································ 9
Start-up····································································································································· 10
Operating Limits ······················································································································· 11
Controls ···································································································································· 12
I/O 583 ····································································································································· 12
I/O 6126···································································································································· 14
General Maintenance ··············································································································· 17
Parts and Service support ········································································································ 17
Troubleshooting ························································································································ 18
Performance Troubleshooting ································································································· 19
Unit check-out sheet ················································································································ 20

MAMM-WSHP-IOM-1BA (February 2012)

B-Vintage Vertical
Size 024 to 072

2

Model Nomenclature

F -024- V- H- B

Voltage

BTU/hr Cooling

Unit Type Temperature Range Vintage

D = 208-230/1/60

F = 208-230/3/60

G = 460/3/60

J = 380/3/50

K = 575/3/60

L = 220-240/1/50

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.

024 = 24,000 V = Vertical H = Standard Range

030 = 30,000 L = Low Temp Operation

036 = 36,000

042 = 42,000

048 = 48,000

060 = 60,000

072 = 72,000

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

©Mammoth, Inc. 2012. All rights reserved throughout the world.

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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-1BA (February 2012)

Do not stand or transport the unit on end. In the
event that elevator transfer makes up-ended 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. Excessively high tempera­tures, 140°F (60°C) and higher, may deteriorate certain
plastic materials and cause permanent damage.

3

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 for supplementary heating and cooling
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, sheet
metal 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, con­densate drain piping, and electrical wiring. The lo­cations of these items are clearly marked on sub­mittal drawings.

7. Mammoth recommends the unit be covered during
construction to protect components from dust and
other harmful material. 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-1BA (February 2012)

4

Unit Location and Clearances

Units can be mounted on the floor or a concrete pad,
typically in a mechanical closet or other area enclosed
from the space to promote a quieter occupied environ­ment.

The diagrams below show 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

Unit clearances

several factors such as maintenance requirements and
mechanical or electrical installation codes. If return air
is not ducted, enough clearance will be required to pro­vide for adequate airflow.

Units need to be accessed on three sides; two panels
for the compressor and blower, one for the electrical
panel and compressor compartment. Unit filters are
removed from the right or left side.

MAMM-WSHP-IOM-1BA (February 2012)

5

Ductwork and Attenuation

Discharge ductwork is normally used with B-vintage
single circuit units. Return air ductwork may also be
required.

Discharge ductwork should include a non-insulated
transition from the unit connection to a flexible
connector at the full duct size, a short run of duct and
an elbow internally lined with insulation but without
turning vanes. The main duct tees into branch circuits
with discharge diffusers.

Ventilation Air

Outside air may be required for ventilation. The
temperature of the ventilation air must be controlled so
that the mixture of outside air and return air entering
the unit is within application limits. It is typical to close
off the ventilation air system during unoccupied periods
(i.e. night setback).

Return air is typically brought in through a grille in a
mechanical closet door. The unit should be located
ninety degrees from the door return to eliminate any
“line of sight”. Return air can be brought in through the
grille and ducted to the unit.

Return ducting is facilitated through use of a filter rack
that is designed to accept return air ducting. Return
ducting will likely increase the required width of the
closet.

The ventilation air system is typically a separate
building subsystem with distribution ductwork. Simple
introduction of the outside air into each return air
plenum chamber reasonably close to the unit air inlet is
recommended. Do not duct outside air directly to the
unit inlet. Provide sufficient distance for the thorough
mixing of outside and return air.

MAMM-WSHP-IOM-1BA (February 2012)

6

Supply Piping

IMPORTANT:

Prior to first operation of B-Vintage units, the water
circulation system must be cleaned and flushed of all
construction dirt and debris. After the cleaning
and flushing has taken place, the initial connection
should have all valves wide open in preparation for
start-up.

1. All units should be connected to supply and return

2. The piping may be steel, copper, or PVC. Avoid

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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 ensure proper water flow, the
differential temperature should be between 10°F to
14°F for heat pumps in the cooling mode.

dissimilar metal fittings as they may corrode. If the
use of dissimilar metals is unavoidable, use
dielectric isolation at that connection point.

3. Supply and return run-outs usually join the heat
pump via short lengths of high pressure flexible
hose which are sound attenuators for both heat
pump operating noise and hydraulic pumping
noise. 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. Make sure that threaded fittings are sealed. Teflon
tape can be used to provide a tight seal.

5. Supply and return shutoff valves are required at
each heat pump. 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.

Condensate Piping

1. Condensate piping can be steel, copper, or PVC.
Each unit includes a condensate connection.

2. The condensate disposal piping must be trapped.
Units are internally trapped. The piping must be
pitched away from the heat pump not less than ¼”
per foot. The unit is supplied with a male pipe fitting
(3/4”) to accommodate the condensate drain
connection.

3. Do not locate any point in the drain system above
the drain connection of any unit.

4. The condensate piping system must be vented at
its highest point.

MAMM-WSHP-IOM-1BA (February 2012)

7