Mammoth 24 Tons User Manual

Multiple Circuit Horizontal and Vertical
Water Source Heat Pumps With R-410A

Installation, Operation and Maintenance Manual

Sizes: 084 to 144 — Horizontal
084 to 288 — Vertical
Model: M Vintage

MAMM-WSHP-IOM-1MA (November 2011)

P/N 71144916

Table of Contents

Model Nomenclature ················································································································ 3
Transportation and Storage ···································································································· 3
Installation ································································································································ 4
Unit Location ···························································································································· 5
Ductwork and Attenuation ······································································································· 6
Ventilation Air ··························································································································· 6
Piping ········································································································································ 7
Cleaning and Flushing ············································································································· 8
Fan Wall Assembly ··················································································································· 9
Start-up···································································································································· 10
Operating Limits ····················································································································· 11
DDC Controls ·························································································································· 12
I/O’s ········································································································································ 13
Keypad ···································································································································· 14
General Maintenance ············································································································· 15
VFD application parameters ·································································································· 16
Troubleshooting ····················································································································· 17
Performance Troubleshooting ····························································································· 18
Unit check-out sheet ············································································································· 19

M Vintage Vertical
Size 084 to 288

MAMM-WSHP-IOM-1MA (November 2011)

M Vintage Horizontal
Size 084 to 144

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Model Nomenclature

F -084- V- H- M

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

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.

084 = 84,000

096 = 96,000

120 = 120,000

144 = 144,000

168 = 168,000

192= 192,000

240 = 240,000

288 = 288,000

V = Vertical H = Standard Range

H= Horizontal 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-1MA (November 2011)

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,

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-1MA (November 2011)

4

Unit Location

Locate the unit in an area that allows for easy removal
of the filter and access panels. The diagrams to the
right show minimum suggested clearances. Any addi­tional clearances would be beneficial, but not always
necessary. Units need to be accessed from three
sides: two panels for the two panels for the blower, two
electrical access doors and one for the compressor
compartment.

Horizontal Service Clearances

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. Horizontal unit filters are removed
from the bottom with an option for side removal. Verti­cal unit filters slide out of the left or right side (quad­circuit units must be removed from each side). If return
air is not ducted, enough clearance will required to pro­vide for adequate airflow.

MAMM-WSHP-IOM-1MA (November 2011)

Vertical Service Clearances

5

Ductwork and Attenuation

Discharge ductwork is normally used with the M­vintage horizontal and vertical multiple circuit units.
Return air ductwork may also be required.

All ductwork should conform to industry standards
of good practice as described in the ASHRAE Systems
Guide.

The discharge duct system will normally consist of
a flexible connector at the unit connection, a transition
piece to the full duct size, a short run of duct,
and elbow with vanes, and a trunk duct teeing into
a branch duct with discharge diffuses. The transition
piece must not have angles totaling more than
30° or severe reduction in airflow performance can
result.

Ventilation Air

Do not connect the full duct size to the unit. Use a
transition piece sized according to the discharge collar
on the unit to get to the full duct size. With metal duct
material, the sides of only the elbow and entire branch
duct should be internally lined with acoustic fibrous
insulation for sound attenuation. Glass fiber duct board
material is more absorbing and may permit omission of
the canvas connector.

The ductwork should be laid out so that there is no
line of sight between the unit discharge and
the distribution diffusers.

Do not use sheet metal screws directly into the unit
cabinet for connection of supply or return air ductwork,
especially return ductwork which can hit the drain pan
or the air coil.

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).

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-1MA (November 2011)

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