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Single Circuit Horizontal and Vertical
Water Source Heat Pumps With R-410A
Installation, Operation and Maintenance Manual
Sizes: 009 to 072 — Horizontal
012 to 072 — Vertical
Model: U Vintage
MAMM-WSHP-IOM-1UB (September 2011)
P/N 71144909
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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 560 ····································································································································· 12
I/O 583 ····································································································································· 14
I/O 6126···································································································································· 16
General Maintenance ··············································································································· 19
Troubleshooting ························································································································ 20
Performance Troubleshooting ································································································· 21
Unit check-out sheet ················································································································ 22
U Vintage Vertical
Size 012 to 072
MAMM-WSHP-IOM-1UB (September 2011)
U Vintage Horizontal
Size 009 to 072
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Model Nomenclature
F -024- H- H- U
Voltage
BTU/hr Cooling
Unit Type Temperature Range Vintage
D = 208-230/1/60
E = 265/1/60
F = 208-230/3/60
G = 460/3/60
J = 380/3/50
K = 575/3/60
L = 220-240/1/50
S = 380/3/60
043 = 43,000
052 = 52,000
062 = 62,000
072 = 72,000
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.
009 = 9,000 V = Vertical H = Standard Range
012 = 12,000 H= Horizontal L = Low Temp Operation
013 = 13,000
016 = 16,000
019 = 19,000
024 = 24,000
030 = 30,000
036 = 36,000
“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 (952) 358-6618 or [email protected]
for a warranty claim number.
MAMM-WSHP-IOM-1UB (September 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.
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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 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
Discharge Conversion—Horizontal Units
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.
All horizontal units from size 009 to 062 can be field
converted from straight discharge to side discharge.
1. Set the unit on a level surface.
2. Remove the blower access panel.
3. Remove the top panel.
4. Remove the screws that secure the panel where
blower is mounted.
5. Re-install the blower panel assembly for side discharge configuration (assembly will be flipped 180
degrees). See unit specification sheet for dimensional information.
6. Re-install the top of the unit.
7. Re-install the blower access panel where the
blower panel assembly was for straight-through
discharge.
8. After first operation, check all fasteners for tightness.
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Unit Location and Clearances
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
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.
Horizontal unit clearances
Horizontal units have three access panels; one panel
for the blower, one for the electrical panel and one for
the compressor compartment. Horizontal unit filters are
removed from the right or left side with an option for
bottom removal.
Vertical units need to be accessed on three sides; two
panels for the compressor and blower, one for the electrical panel and compressor compartment. Vertical unit
filters are removed from the right or left side.
MAMM-WSHP-IOM-1UB (September 2011)
Vertical unit clearances
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Mounting
Vertical 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..
Horizontal units must be hung from the ceiling. Mounting brackets, rubber grommets, bolts and washers are
shipped in place on the unit. The mounting brackets
are designed to accept up to a 3/8-inch threaded rod
(by others). A flat washer and two nuts (both by others)
should be used to mount the unit on the ceiling attached threaded rods. When installed, the unit should
be slightly pitched toward the condensate drain connection.
Horizontal mounting detail (See unit submittal drawing for specific component locations on your unit)
Hanger
Brackets (4)
Water Outlet FPT
Connection
Access to Compressor
Water Coil, Reversing Valve
Water Inlet FPT
3/4” OD Copper Condensate Drain
Electrical
Flange on Filter Guide
Filter, Left or Tight Side
Removal. Lift and Pull on
Flange on Filter Guide
7/8” or 1-3/32” Hole for line
voltage conduit connection
Grommet detail
Hanger Bracket
Note: Rotate Brackets
90° And Tighten
Retaining nut
(by others)
Threaded Rod
(By Others)
Washer (by others) must cover
entire bottom of grommet
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Ductwork and Attenuation
Discharge ductwork is normally used with U-vintage
horizontal and vertical single 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.
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.
Minimum/maximum duct connections
MODEL
009 23.21 9 11.25 6 9.0
013 23.21 9 11.25 6 9.0
016 26.0 9 11.25 6 9.0
019 26.0 11.3 12.4 9.2 10.0
024 26.82 11.3 12.4 9.2 10.0
030 26.82 11.3 12.4 9.2 10.0
036 29.76 12.5 13.25 10.5 11.25
043 29.76 12.5 13.25 10.5 11.25
052 29.76 13 13.5 11 11.5
062 29.76 13 13.5 11 11.5
072 33.51 14.5 13.5 12.5 11.5
MIN. STRAIGHT
DISCH. LENGTH
MAX. DUCT MIN. DUCT
WIDTH HEIGHT WIDTH HEIGHT
Legend
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).
MAMM-WSHP-IOM-1UB (September 2011)
V entilation Air
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.
.
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Supply Piping
1. All 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 insure
proper water flow, the differential temperature
should be between 10°F to 14°F for heat pumps in
the cooling 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.
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.
6. 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.
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.
Vertical units are internally trapped and horizontal
units must be externally trapped. The piping must
be pitched away from the heat pump not less than
¼” per foot. The unit is supplied with a 1-1/4” male
pipe fitting 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.
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Cleaning and Flushing
1. Prior to first operation of U-Vintage horizontal and
vertical units, the water circulation system must be
cleaned and flushed of all construction dirt and debris
2. If the U-Vintage horizontal and vertical units are
equipped with water shutoff valves, either electric
or pressure operated, the supply and return runouts must be connected at each heat pump location. This will prevent the introduction of dirt into the
heat pump.
3. Fill the system at the city water makeup connection
with all air vents open. After filling, close all air
vents.
4. The contractor should start the main circulator with
the pressure reducing valve open. Check vents in
sequence to bleed off any trapped air, providing
circulation through all components of the system.
5. While circulating water, the contractor should check
and repair any leaks in the piping. Drains at the
lowest point(s) in the system should be opened for
the initial flush and blow down, making sure city
water fill valves are set to make up water at the
same rate. Check the pressure gauge at the pump
suction and manually adjust the makeup to hold the
same positive steady pressure both before and
after opening the drain valves. Flush should continue for at least two hours, or longer if required,
until the drain water is clear and clean.
6. Shut off supplemental heater (if applicable) and
circulator pump and open all drains and vents to
completely drain down the system. Short circuited
supply and return runouts should now be connected to the heat pump supply and return connections. Do not use sealers at the swivel flare connections of the hoses.
7. Refill the system with clean water. Test the water
using litmus paper 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. Do not
use automotive grade antifreeze.
8. Once the system has been filled with clean water
and antifreeze (if used), precaution should be taken
to protect the system from dirty water conditions.
Dirty water will result in system wide performance
degradation and solids may clog valves, strainers,
flow regulators, etc. Additionally, the heat exchangers may become clogged which reduces compressor service life or causes premature failure.
9. Set the loop water controller heat add setpoint to
70°F and the heat rejection setpoint to 85°F. Supply power to all motors and start the circulation
pumps. After full flow has been established through
all components including the heat rejecter
(regardless of season) and air has been vented
and loop temperatures have been stabilized, each
of the heat pumps will be ready for check, test and
start-up, and water balancing.
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Start-up
1. Open all valves to full open position and turn on
power to the heat pump.
2. Set room temperature sensor for “Fan Only” operation by selecting “Off” at the system switch and
“On” at the fan switch. If “Auto” fan operation is selected, the fan will cycle with the compressor.
Check for proper air delivery.
3. U-Vintage horizontal and vertical units have time
delays which help protect the compressor(s)
against short cycling. In the cooling mode, after a
few minutes of operation, check the discharge
grilles for cool air delivery. Measure the temperature difference between entering and leaving water.
It should be approximately 1 ½ times greater than
the heating mode temperature difference.
4. In the heating mode, measure the temperature difference between entering and leaving air and entering and leaving water. With entering water of 60°
F to 80°F, leaving water should be 6°F to 12°F
cooler, and the air temperature rise through the UVintage horizontal and vertical units should not exceed 35°F. If the leaving air temperature falls below 35°F, adjust water flow to the unit to >3 gpm/
ton to avoid freeze damage to the unit.
5. Fill the p-trap with water to ensure that negative
pressure does not pull drain gases into the unit.
6. Check the elevation and cleanliness of the condensate line. If the air is too dry for sufficient dehumidification, slowly pour enough water into the condensate pan to ensure proper drainage.
7. If the unit does not operate, check the following
points:
a) Is supply voltage to the U-Vintage horizontal and
vertical units compatible?
b) If the U-Vintage horizontal and vertical units operates but stops after a brief period:
i) Is there proper airflow? Check for dirty filter,
incorrect fan rotation or incorrect ductwork.
ii) Is there proper water flow rate within temperature limits? Check water balancing; backflush unit if dirt clogged.
iii) See troubleshooting guide on page 21 for
more tips.
MAMM-WSHP-IOM-1UB (September 2011)
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Operating Limits
Environment
This equipment is designed for indoor installation only.
Sheltered locations such as attics, garages, etc.,
generally will not provide sufficient protection against
Application Limits
WATER TEMPERATURES / Degrees F *
MINIMUM ENTERING WATER TEMPERATURE
MAXIMUM ENTERING WATER TEMPERATURE
* Application limits apply at or above standard flow rates specified for size of unit.
Application Limits
AIRTEMPERATURES/DegreesF*
MINIMUMAMBIENTAIRTEMPERATURE**
MAXIMUMAMBIENTAIRTEMPERATURE**
MINIMUMENTERINGAIRTEMPERATURE
MAXIMUMENTERINGAIR
TEMPERATURE
*Applicationlimitsapplyatorabovestandardflowratesspecifiedforsizeofunit.
**Minimumandmaximumambientconditionsapplytoductedsupplyandreturnunitsonly.
extremes in temperature and/or humidity, and
equipment performance, reliability, and service life may
be adversely affected.
Standard range Low Temp Geothermal
COOLING HEATING COOLING HEATING
50˚ 50˚ 40˚ 25˚
110˚ 90˚ 110˚ 90˚
Standardrange LowTempGeothermal
COOLING HEATING COOLING HEATING
50˚ 50˚ 50˚ 50˚
110˚ 110˚ 110˚ 110˚
65˚ 50˚ 65˚ 40˚
100˚ 80˚ 100˚ 80˚
Additional Information For Initial Start-up Only
Standard Range Units
Units are designed to start-up in an ambient
temperature of 50°F (10°C), with entering air at 50°F
(10°C), with entering water at 70°F (21°C), with air and
water flow rates used in the ISO13256-1 rating test, for
initial start-up in winter.
Note: This is not a normal or continuous operating
condition. It is assumed that such a start-up is for the
purpose of bringing the building space up to occupancy
temperature.
Geothermal Range Units
Geothermal heat pump units are designed to start-up in
an ambient temperature of 50°F (10°C), with entering
air at 40°F (5°C), with entering fluid at 25°F (-4°C), with
air and water at flow rates used in the ISO 13256-1
rating test, for initial start-up in winter.
MAMM-WSHP-IOM-1UB (September 2011)
Note: This is not a normal or continuous operating
condition. It is assumed that such a start-up is for the
purpose of bringing the building space up to occupancy
temperature.
Operating voltages
208-230/60/1 . . . . . . . . . 197 volts min.; 253 volts max.
265/60/1 . . . . . . . . . . . . .239 volts min.; 291 volts max.
208-230/3/60. . . . . . . . . .197 volts min.; 253 volts max.
460/3/60. . . . . . . . . . . . . 414 volts min.; 506 volts max.
380/3/50. . . . . . . . . . . . . 342 volts min.; 418 volts max.
575/3/60. . . . . . . . . . . . . 515 volts min.; 632 volts max.
220-240/1/50 . . . . . . . . . 216 volts min.; 264 volts max.
380/3/60. . . . . . . . . . . . . 342 volts min.; 418 volts max.
Note:
Voltages listed are to show voltage range. However,
units operating with over- or under-voltage conditions
for extended periods of time will experience premature
component failure. Three phase system imbalance
should not exceed 2%.
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MAMMOTH CONTROLS
I/O 560
Mammoth I/O Zone 560 controller delivers powerful
control and communications features all in a compact,
economical package. Fully capable of operating in a
100% stand-alone control mode, the I/O Zone 560 can
connect to a Building Automation System (BAS) using
any of today’s most popular protocols, such as BACnet,
Modbus, N2, LonTalk. The I/O Zone 560 also supports
communication to the Mammoth line of intelligent space
sensors and keypad/display units.
Key Features and Benefits
I/O point count: 5 digital outputs (relayed), and 6 universal imputs.
Built-in protocol support: BACnet (ARCNET and MS/TP), Modbus RTU, and N2. Optional plug-in communica-
tions boards: LonTalk
On-board battery-backed real-time clock is standard, thus enablin g full stand-alone scheduling capabilities as
well as historical trend data storage and alarm event time-stamping.•
Powerful, high-speed 16-bit processor with 1MB Flash memory and 512KB of battery-backed RAM - plenty of
room for even demanding and complex applications.
For standard CAV heat pumps without modulatin g waterside economizer (WSE) or hot gas
Reheat (HGR).
For variable air volume (VAV), constant volume (CAV), and make-up air (MAU) ap plications.
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I/O 560 (Base CAV) - Examples of I/O’s
Universal
Input
1 Supply Air Temperature (Monitor Only) Thermistor/Dry Contact
2 Condenser Leaving Water Temperature Thermistor/Dry Contact
3 Thermistor/Dry Contact
4 Compr Lckt/Overflow Compr.#1 HP-5 Alarm Compr. #2 Alarm Thermistor/Dry Contact
5 Load Shead* Compr#1Q HP-5 Alarm* Compr#2Q HP-5 Alarm Thermistor/Dry Contact
6 Emergency Shut Down External Clock (Start) Dirty Filter (Switch Opt) Thermistor/Dry Contact
Condenser Entering Water Temperature
Jumper Setting
Rnet Jumper Setting
1
Digital
Output
1 Supply Fan Start Dry Contact for 24 VAC
Room/Return Air Temperature (RS Std) or
Room Air Temperature/Stet-Point/Override (RS-Pro, Optional)
N/A
Jumper Setting
2 Compressor Call #1 Dry Contact for 24 VAC
3 Compressor Call #2 or on/off Waterside Economize or on/off Aux. Heat Dry Contact for 24 VAC
4 Reversing Valve or on/off Waterside Economizer or on/off Aux. Heat Dry Contact for 24 VAC
5 Common Alarm Dry Contact for 24 VAC
Options are in italics. Common options are bolded
* Cost add option must be ordered to get multiplexing board
** A minimum of one keypad display must be ordered per project to set required set-points
*** A protocol will be a cost add option
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I/O 583
Mammoth I/O Zone 583 controller delivers powerful
control and communications features all in a compact,
economical package. Fully capable of operating in a
100% stand-alone control mode, the I/O Zone 583 can
connect to a Building Automation System (BAS) using
any of today’s most popular protocols, such as BACnet,
Modbus, N2, and LonTalk,. The I/O Zone 583 also supports communication to Mammoth line of intelligent
space sensors and keypad/display units.
Key Features and Benefits
I/O point count: 5 digital outputs (relayed), 8 inputs and 3 analog outputs.
Built-in protocol support: BACnet (ARCNET and MS/TP), Modbus RTU, and N2. Optional plug-in communica-
tions boards: LonTalk
On-board battery-backed real-time clock is standard, thus enablin g full stand-alone scheduling capabilities as
well as historical trend data storage and alarm event time-stamping.•
Powerful, high-speed 16-bit processor with 1MB Flash memory and 512KB of battery-backed RAM - plenty of
room for even demanding and complex applications.
For standard CAV heat pumps requiring a modulating control points for a waterside economizer (WSE), hot gas
reheat (HGRH) or auxiliary heating.
MAMM-WSHP-IOM-1UB (September 2011)
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I/O Zone 583 (RHT, CAV, NMUA) - Examples of I/O’s
Universal
Input
1 Supply Air Temperature (Monitor Only) Thermistor/Dry Contact
2 Condenser Leaving Water Temperature Thermistor/Dry Contact
3 Condenser Entering Water Temperature Thermistor/Dry Contact
4 Cooling Coil Leaving Air Temperature Sensor
5
6 Load Shead* Comp #1Q HP-5 Alarm* Comp r#2Q HP-5Alarm
7 Compr Lckt/Overflow Comp #1 HP-5 Alarm Comp #2 Alarm Thermistor/Dry Contact
8 Emergency Shut Down External Clock (Start) Dirty Filter (Switch Opt)
Space or Return Humidity
Jumper Setting
Thermistor/Dry Contact
Thermistor/Dry Contact
Thermistor/Dry Contact
Thermistor/Dry Contact
Rnet Jumper Setting
1
Analog
Output
Room/Return Air Temperature (RS Std) or
Room Air Temperature/Stet-Point/Override (RS-Pro, Optional)
N/A
Jumper Setting
N/A
1 Reheat** 0-10VDC
2 Water Side Economizer** 0-10VDC
3
Analog
Output
1 Supply Fan Start Dry Contact for 24 VAC
2 Compressor Call #1 Dry Contact for 24 VAC
3 Compressor Call #2 Dry Contact for 24 VAC
4 Reversing Valve Dry Contact for 24 VAC
5 Common Alarm Dry Contact for 24 VAC
Options are in italics. Common options are bolded.
Auxiliary Heat**
0-10VDC
Jumper Setting
N/A
* Cost add option must be ordered to get multiplexing board
** Requires DC relay for single stage, UCS for multi-stage, or actuator for modulating control
*** A minimum of one keypad display must be ordered per project to set required set-points
**** A protocol will be a cost add option
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I/O Flex 6126
The standard factory-integrated DDC controller
provides control flexibility that can be easily customized
to meet any sequence of operation needs. It is fully
capable of operating in a 100% stand-alone mode or
can connect to a Building Automation System (BAS)
using any of today’s four leading protocols: BACnet,
Modbus, N2, and Lontalk. The base controller provides
ample input/output capacity, plus support for an
expander board if additional I/O capacity is required.
Key Features and Benefits
6160 I/O points: 6 digital outputs, 12 universal inputs, and 6 analog outputs.
8160 I/O points: 16 universal inputs, 8 digital outputs.
Optional built-in protocol support: BACnet® (ARCNET, MS/TP, and PTP modes), Modbus® (RTU and ASCII
modes supported), N2, or Lontalk®.
Powerful, high-speed 16-bit microprocessor with 1 MB Flash memory and 1 MB of battery-backed RAM
Built-in support through an Rnet port for control’s custom configurable keypad/display unit, BACview6 (4-line by
40 character per line display) for intelligent sensors.
For variable air volume (VAV), constant volume (CAV), and make-up air (MAU) ap plications.
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Examples of I/O’s
INPUTS
Point Description
UD #1
UD #2
UD #3
UD #4 Contact, 0-10VDC,
UD #5 0-20MA
UD #6
UD #7
UD #8
UD #9
UD #10
UD #11
UD #12
Point Description
UO #1
UO #2
UO #3
UO #4
UO #5
UO#6
DO #1
DO #2
DO #3
DO #4
DO #5
DO #6
+Pulse
Room Air Temperature
RTD/Therm/Dry
Entering Air Temperature or Return Air Temperature (AiSE)
4-20mA, 0-10Vdc
Heating Source Control Signal
0-10 Vdc
Supply Fan VFD Control Signal
120 VAC
FORM C
Field-Lin (MWU or Open Min OA)
Common Alarm
Compressor Call #2
BMS Supply Air, Duct Static Reset or Room Air Temperature Setpoint
System Switch Emergency Shut Down Remote Start
High Static Low Static VFD in Bypass
Economizer Lockout Cooling Lockout Heating Lockout
Supply Fan Status Compressor Fault Condensate Overflow
Duct Static Pressure or Airflow Switch
Filter Static Pressure or Dirty Filter Switch #1
Outside Air Temperature (AiSE Only)
Condenser Water Temperature
Supply Air Temperature
OUTPUTS
Spare
Economizer Valve (WiSE)/Damper Control Signal (AiSE)
WiSE Bypass Valve Signal
Spare
Start Supply Fan
Start Condenser Pump or Switch Reversing Valve
Compressor Call #1
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MAMMOTH DDC CONTROLS
Keypad
Locally access controllers and operational properties
with the easy-to-use BACview
into an Rnet connection on a 6126 controller and
allows you to display and modify properties. The
BACview
and four programmable function keys. A large 4-line by
40-character backlit LCD display is provided for easy
reading even in poor lighting conditions. The device
also includes an alarm indicator light.
6 features a numeric keypad, directional keys,
Key Features and Benefits
Compatible with all EPiC system controllers.
Flexible design allows panel or wall mounting; can be located up to 500 feet from the controller.
Hand-held version can be plugged into RS room temperature sensors.
Backlit LCD display enhances reading even in poor lighting conditions.
Customized menus for each product.
Password protection provides security.
One keypad can be used on different units/programs since the menus a re pa rt of the control program.
6 keypad/display. It plugs
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General Maintenance
Normal maintenance on U-Vintage horizontal and vertical units is generally limited to filter changes.
Air filter changes are required at regular intervals. The
time period between changes will depend upon the project requirements. Some applications such as motels
produce a lot of lint from carpeting and linen changes,
and will require more frequent filter changes. It is suggested that the filter be checked at 60-day intervals for
the first year until experience is acquired. If light cannot
be seen through the filter when held up to sunlight or a
bright light, it should be changed. A more critical standard may be desirable.
The condensate drain pan should be checked annually
and cleaned and flushed as required.
Recording of performance measurements of volts,
amps, and water temperature differences (both heating
and cooling) is recommended. A comparison of logged
data with start-up and other annual data is useful as an
indicator of general equipment condition.
Periodic lockouts almost always are caused by air or
water problems. The lockout (shutdown) of the heat
pump is a normal protective result. Check for dirt in the
water system, water flow rates, water temperatures,
airflow rates (may be dirty filter), and air temperatures.
If the lockout occurs in the morning following a return
from night setback, entering air below machine limits
may be the cause.
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Troubleshooting
R-410A
The In’s and Out’s of R-410A
R-410A is a non-ozone depleting blend of two
Refrigerants — HFC-125 and HFC-32 in a fifty percent
mixture. Refrigerant 410A exhibits higher operating
pressure and refrigeration capacity than R-22.
Although R-410A is non-flammable at ambient temperature and atmosphere pressure, it can become
combustible under pressure when mixed with air.
(NOTE: R-410A should not be mixed with air under
pressure for leak testing. Pressure mixtures of dry nitrogen and R-410A can be used for leak testing.)
Lubrication
R410A should be used only with polyolester (POE) oil.
The HFC refrigerant components in R-410A will not be
compatible with mineral oil or alkylbenzene lubricants.
R-410A systems will be charged with the OEM recommended lubricant, ready for use with R-410A.
Troubleshooting Refrigeration Circuit
Symptom
Charge
Undercharge
System
(Possible Leak)
Overcharge System
Pressure
Low Air Flow
Heating
Low Air Flow
Cooling
Low Water Flow
Heating
Low Water Flow
Cooling
High Air Flow
Heating
High Air Flow
Cooling
High Water Flow
Heating
High Water Flow
Cooling
TXV Restricted High Low
Head
Pressure
Low Low Low High Low Low Low Low Pressure
High High High Normal Low
High High High
Low Low Low
Low Low
Normal Normal
High High High High Low Low High High Pressure
Low Low Low Low High Low Low Low Temp
Low High Normal High Low Low Normal High Pressure
Normal Low Low Low Normal Normal Low High Pressure
Low Low Low Low HIgh Normal Low Low Temp
Suction
Pressure
Compressor
Amp Draw
Low Low High Low High Low Temp
Normal
Low
Charging
Due to the zeotropic nature of R-410A, it should be
charged as a liquid. In situations where vapor is normally charged into a system, a valve should be installed in the charging line to flash the liquid to vapor
while charging.
WARNING!
It is very important to make certain that the recycle or
recovery equipment used is designed for R-410A. The
pressure of R-410A refrigerant is approximately 60
percent greater than that of R-22. Pressure gauges
require a range up to 800 PSIG high side and 250
PSIG low side. Recovery cylinders require a 400 PSIG
rating.
All Mammoth U-Vintage units are designed
for commercial use. Units are designed for the
cooling mode of operation and fail safe to heating.
Super
Heat
High
Normal
Low
Normal
High High Low Low
Subcooling
Low High Low High Pressure
Low Low Low Low Temp
Air
Temp
Differential
Normal
Low
Water
(Loops)
Temp
Differential
Normal High Pressure
Safety
Lock
Out
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Performance Troubleshooting
Performance
Troubleshooting
Insufficient Capacity X X Dirty Filter Replace or clean
Not cooling or heating
properly
X X Leaky duct work
Unit doesn’t operate in
cooling
X X
X Defective reversing valve Perform RV touch test
X X
X X Unit undersized
X X
X X Inlet water to hot or cold Check load, loop sizing, loop backfill, ground moisture
High head pressure X
X
Heating Cooling Possible Cause Solution
X X Reduced or no air flow
X X Low refrigerant charge Check superheat and subcooling
Restricted metering device
Thermostat improperly
located
Scaling in waterside heat
exchanger
Reduced or no air flow in
heating
Reduced or no water flow
in cooling
Check for dirty air filter and clean or replace, Check fan motor operation
and airflow restriction. External static too high? Check static vs. blower
table
Check supply and return air temperatures at the unit and at distant duct
registers: If significantly different, duct leaks are present
Check superheat and subcooling– replace
Check location and for air drafts behind stat
Recheck loads & sizing. Check sensible, cooling load and heat pump capacity
Perform scaling check and clean if necessary
Check for dirty air filter and clean or replace. Check fan motor operation
and airflow restrictions. External static too high? Check static vs. blower
table
Check pump operation or valve operation/setting. Check water flow; adjust
to proper flow rate
X Inlet water to hot Check load, loop sizing, loop backfill, ground moisture
X
X
X X Unit overcharged Check superheat and subcooling
X X
Low suction pressure X
X
X
X
X X Insufficient charge Check for refrigerant leaks
Low discharge air
temperature in heating
X Poor performance See insufficient capacity
X To high of air flow Check fan motor speed selection and airflow
Air temperature out of
range in heating
Scaling in waterside heat
exchanger
Non-condensable in
system
Reduced water flow in
heating
Water temperature out of
range
Reduced air flow in cooling
Air temperature out of
range
Bring return air temp within design parameters
Perform scaling check and clean if necessary
Vacuum system, reweigh in charge
Check pump operation or valve operation/setting. Check water flow adjust
to proper flow rate
Bring water temp within design parameters
Check for dirty air filter and clean or replace. Check fan motor operation
and airflow restrictions. External static too high? Check static vs. blower
table
Too much cold vent air? Bring entering air temp within design
parameters.
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UNIT CHECK-OUT SHEET
Customer Data
Customer Name ________________________________________ Date _________________________________________
Address ________________________________________________________________________________________________
Phone ________________________________________________ Unit Number___________________________________
Unit Nameplate Data
Make _______________________ Model Number _______________________ _ Serial Number _______________________
Compressor: RLA_______ LRA _______ Refrig, Charge (oz.) _______
Blower Motor(s): FLA (or NPA)________ HP __________
Maximum Fuse Size: (Amps) __________ Minimum Circuit Ampacity (Amps) __________________
Operating Conditions
Unit Conditions Cooling Mode Heating Mode Measured At:
Entering Air Temperature _____________ _____________ ________________________ _________
Leaving Air Temperature _____________ _____________ ______________________ ___________
Entering Fluid Temperature _____________ _____________ n/a
Leaving Fluid Temperature _____________ _____________ n/a
Fluid Flow (gpm) _____________ _____________ n/a
Fluid Side Pressure Drop _____________ _____________ n/a
Compressor
Mode Cooling Heating
Suction Pressure (psig) _______ _______
Discharge Pressure (psig) _______ _______
Suction Temp (at compressor) _______ _______
Discharge Temp (at compressor) _______ _______
Suction Superheat (at compressor) _______ _______
Liquid Line Leaving Condenser Temp _______ _______
Liquid Subcooling _______ _______
Volts/Amps
Phase
L1 L2 L3
Compressor Volts _____ _____ _____
Compressor Amps _____ _____ _____
Blower Volts _____ _____ _____
Blower Amps _____ _____ _____
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Notes
Page 24
[email protected]
www.mammoth-inc.com
Mammoth, Inc. has a policy of continuous product improvement and reserves the right to
change design and specifications without notice.
© 2011 Mammoth, Inc.
MAMM-WSHP-IOM-1UB
September 2011
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