EMI UNHG09 User manual

UNCG/UNHG
High Efficiency Ductless Split System Universal Air Handler
UNHG0g iUNHG12 i UNHG18 i UNHG24
UNCG-30
8_3
Installation, Operation and
Maintenance Manual
UNCG/UNHG
P/N 240007753, Rev. A [0515091

Contents ...................... 2
Read Before Proceeding ............ 3
Verify Unit Before installing .......... 4
Piston/Orifice Replacement (when required)..6
Mounting the Unit ................ 7
Electrical Wiring ................. 12
Condensate Piping ............... 17
Refrigerant Piping ............... 18
Refrigerant Processing ............ 21
Reassemble the UNCG/UNHG Cabinet . . 22
Initial Start-Up .................. 23
UNCG/UNHG Controller Overview ..... 24
Setting the Controller ............. 26
Unit-Mounted Controller Operation .... 29
Remote Thermostat Operation ....... 33
AmericaSeries Controller Features ...... 36
AmericaSeries Controller Fault Conditions. 37
Maintenance ................... 38
Troubleshooting ................ 40
Frequently Asked Questions ......... 44
Specifications and Dimensions ....... 46
UNCG/UNHG System Options ........ 48
Test Unit Performance Data Sheet ..... 50
EMI's Product Line ............... 51
Indoor Units ................... 51
Outdoor Units .................. 51
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INMEDIATELY.
Examine the exterior. Remove
cover and examine compressor
and piping for signsof damage.
_it_eEMI AmericaSeries high eNciency
air handlers is backed by EMi and
ECR international and is tested and
rated in accordance with AHR1 Standard
210/240 and UL-1995.
Due to ongoing product development,
product designs and specifications may
change without notice.
Please contact the f;actory for more
information.
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Retain this manual and warranty for
future reference. Befk_releaving the prem-
ises, review this manual to be sure the unit
has been installed correctly and run the
unit t_brone complete cycle to make sure
it _nctions properly.
To obtain technical service or warranty
assistance during or after the installation
ofthis unit, contact your local representa-
tive. For alocal representative listing, visit
our web site:
Www._nviro m;_ ster.¢om
For _rther assistancecall:
1-800-223-9364
"When calling _r assistance, please have
the following information ready:
Model Number
Serial Number
Date of installation
Comfort where it cour_ts 2 R!N 240007753, Bey A [05£509I

compmetemyreadaH instructions
prior to assemMing, instamming,oper=
ating, or repairing this product.
Inspect all parts for damage prior to
......................installation and start-up. The EMI
._ericaSeries high eNciency airhandles
must be installed ONLY by qualified
installation personnel
Tampering with this unit is da_ger-
ous. Tampering voids all warranties.
DO NOT attempt to modify or change
this unit in any way.
ilhe EMI AmericaSeries must:
Be connected to aproperly grounded
electrical supply with the proper
voltage as stated on the rating plate.
•Have proper overcurrent protection
(time-delay fase/HACR Breaker) as
listed on the rating plate.
Failure to follow these instructions can
result in a fire, explosion, or electrical
shock causingproperty damage, personal
injury_ or death.
'-_ismanualisintendedasanaidtoqua>
fledservicepersonnel for proper installa-
tion, operation, and maintenance of the
EMI AmericaSeries high efficiency air
handles. Read these instructions thor-
oughly and carefully before attempting
installation or operation.
ailuretofollowtheseinstructionsmay
result in improper installation, operation,
service, or maintenance, possibly resulting
infire,electricalshock,propertydamage,
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personal injury, or death.
Read all instructions before using this
unit. Install or locate this unit only in ac-
cordance with these instructions. Use this
unit only for its intended use as described
in this manual
Check the rating plate on the unit before
installation to make certain the voltage
shown is the same as the electric supply to
the unit. The rating plate is located on the
top panel only.
This unit must be connected only to a
properly grounded electrical supply. Do
not fail to properly ground this unit.
_l_rn offthe electrical supplybefore servic-
ing the unit.
Do not use the unit if it has damaged wir-
ing, is not working properly, or has been
damaged or dropped.
:'/N 240007753, Bey, A [05_ 50% 3 I'_$ade i_ the OoA

_odelUNHG24=piston/orificerepiace-
m_m-- _he_ctory-instaHedpiston/
orificemustbereplacedonMode_
UNHG 24 units that are connected to
.adl other applications use the factory-
installed orifice.
Follow the instructions in this manual
toreplacetheorifice_EFOREmounting
the unit.
Rep_a¢in_ {he Dis{on/orifice
1. Follow the instructions on Figure 3,
Page 10 to remove the front grille.
2. Locate the piston orifice (Figure 1).
3. Disassemble the orifice joint, remove the
factory-installed orifice, and replace with
the orifice listed in Figure I (supplied in
the Kit Bag).
4. Make sure o-ringis in good condition and
properly installed.
S. Continue with installation of the air
handler.
Figure I Piston/orifice replacement
_ode_ Condenser Factoryqnstalled Replacement
(18,000Btuh) orifice size orifice size
(Inches.} (Inches.}
Oomfort where it cou;'_ts 4 P!N 240007753, Bey A [05£50%

+ The AmericaSeries UNCG/UNHG
is available as a (Dx) direct expansion
straight cool and heat pump.
+ It offers a contemporary design in a
ductless type air handlers and combines
attractive appearance with high eNciency
conditioning for small to medium size
commercial or residential spaces.
The UNCG/UNHG is equipped with
unit mounted infrared compatible con-
trols which also supports 24V remote wall
thermostat operation. Optional handheld
remote is available.
Heat pump models provide up to
23,800 Bmh of cooling and 20,800 Btuh
of heating. Electric heat options are
available for up to S kW of supplemental
heat.
This American-made air handler of+
fers ease of installation, operation, and
service.
it can be matched with EMI's:
- Single-zone condensing units --
S1CG/SIHG 09-24 and $1CG 30.
Controls and components
{Factory-instaRed or supplied)
+ Large LCD Bacldit Display
Single unit-mounted control package,
configurable to either unit mount or re-
mote wall thermostat operation, increas-
ing installation flexibility.
Urlit mourfl: control -- Ifthe control is
configured for unit mount control DO
NOT connect a wall thermostat to the
unit. See Figure 27, Page 26+
+ Unit control can be used in cooling only,
cooling with electric heat, heat pump, or
heat pump with second stage electric heat
applications.
Operational range set point temperature
adjustable between SS°F and 90°F in one-
degree increments+
+ Infrared-compatible controller allows use
of optional IR hand held controller.
11111111111111111
S2CG/S2HG side discharge.
- Multi-zone, top discharge condens-
ing units -- T2CG/T2HG, T3CG/
T3HG, or T4CG/T4HG+
All EMI air handlers are backed by En-
viromaster international LLC and are
tested and rated in accordance with AR1
standards 210/240 and UL 199S+
Dual-zone condensing units -- +++++++++++++++++Unit-mounted controls are fhlly l_nc-
+++++++++++++++++tional without the handheld remote.
+ Operation modes include Heat, Cool,
Dry, Fan and Auto Change-over+
Fan Operation - Auto/On+ High or Low
speed fan
Fan Purge - Fan remains on for 60 sec-
onds after Heat/Cool call is dropped for
improved eNciency (Auto mode only)
Room air sampling -- Selectable time
intervals ensure the fan will cycle on peri-
odically, in Auto Fan Mode to help elimi-
nate room temperature stratification+
•Selectable Fahrenheit (°F) orCelsius (°C)
temperature scale.
•Drymode- Operates coolingand electric
heat simultaneously to remove humidity.
Optional electric heat must be selected.
•Anti-Short Cycle Compressor Protec-
tion.
c
:_/N 240007753, Bey A [05150% 5 Made i_ the OoA