Carrier GAS FURNACE 58MTA Instructions and recipes

HEATING & COOLING
58MTA
Deluxe 4-Way Multipoise 2-Stage
Direct Vent Condensing Gas Furnace
Visit www.carrier.com
Installation, Start-up, and Operating Instructions
Sizes 060-120
NOTE: Read the entire instruction manual before starting the
installation.
This symbol + indicates a change since the last issue.
A93040
TABLE OF CONTENTS
SAFETY CONSIDERATIONS ..................................................... 2
INTRODUCTION .......................................................................... 2
CODES AND STANDARDS ........................................................ 3
Safety ......................................................................................... 3
General Installation ................................................................... 3
Combustion and Ventilation Air .............................................. 3
Duct Systems ............................................................................ 3
Acoustical Lining and Fibrous Glass Duct .............................. 3
Gas Piping and Gas Pipe Pressure Testing .............................. 3
Electrical Connections .............................................................. 5
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ........ 5
APPLICATIONS ............................................................................ 6
General ...................................................................................... 6
Upflow Applications ................................................................. 6
Condensate Trap Location (Factury-Shipped
Orientation) .......................................................................... 6
Condensate Trap Tubing fEactory-Shipped
Orientation) .......................................................................... 6
Condensate Trap Location tAlternate Upflow
Orientation/ .......................................................................... 7
Condensate Trap Tubing (Alternate Upflow Orientation/.7
Condensate Trap Field Drain Attachment .......................... 8
Pressure Switch Tubing ....................................................... g
Upper. Collector Box and Inducer Housing (Unused)
Drain Connections ............................................................... 8
Condensate Trap Freeze Protection .................................... 8
Downflow Applications ............................................................ 8
Condensate Trap Location .................................................. 8
Condensate Trap Tubing ..................................................... 8
Condensate Trap Field Drain Attachment .......................... 9
Pressure Switch Tubing ....................................................... 9
Condensate Trap Freeze Protection .................................... 9
Horizontal Left (Supply-Air Discharge) Applications ............ 9
Condensate Trap Location .................................................. 9
Condensate Trap Tubing ................................................... 10
Condensate Trap Field Drain Attachments ...................... 10
Pressure Switch Tubing ..................................................... l0
Condensate Trap Freeze Protection .................................. I1
Constrnct a Working Platform .......................................... 11
Horizontal Right (Supply-Air Discharge) Applications ........ 1I
Condensate Trap Location ................................................ I 1
Condensate Trap Tubing ................................................... I 1
Condensate Trap Field Drain Attachment ........................ 12
Pressure Switch Tubing ..................................................... 12
Condensate Trap Freeze Protection .................................. 12
Construct a Working Platform .......................................... 12
LOCATION .................................................................................. 13
General .................................................................................... 13
Furnace Location Relative to Cooling
Equipment ............................................................................... 13
Hazardous Locations ............................................................... 14
INSTALLATION ......................................................................... 14
Leveling Legs (If Desired) ..................................................... 14
Installation in Upflow and Downflow
Applications ............................................................................ 14
Installation in Horizontal Applications .................................. 16
Air Ducts ................................................................................. 16
General Requirements ....................................................... 16
Ductwork Acoustical Treatment ....................................... 16
Supply Air Connections .................................................... 16
Return Air Connections ..................................................... t6
Filter Arrangement .................................................................. 17
Bottom Closure Panel ............................................................. 18
Gas Piping ............................................................................... 18
Electrical Connections ............................................................ 19
115-V Wiring ..................................................................... 19
24-V Wiring ....................................................................... 2l
Accessories ........................................................................ 21
Direct Venting ......................................................................... 23
Remov,'d of Existing Furnaces from Common Vent
Systems .............................................................................. 23
Combustion-Air and Vent Piping ..................................... 24
Concentric Vent and Combustion-Air Ternlination
Kit Installation ................................................................... 28
Multiventing and Vent Terminations ................................ 32
Condensate Drain .................................................................... 32
General ............................................................................... 33
Application ......................................................................... 33
Condensation Drain Protection ......................................... 34
START-UP ADJUSTMENT AND SAFETY CHECK .............. 34
General .................................................................................... 34
Sequence of Operation ............................................................ 35
Two-Stage Heating With Single-Stage Thermostat
(Adaptive Model ................................................................ 35
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 101 Catalog No. 535-80042 Printed in U.S.A. Form 58MTA-3SI Pg 1 7-02 Replaces: 58MTA-1SI

Two-Stage Heating With Two-Stage Thermostat
(Non-Adaptive Heating Model ......................................... 36
Cooling Mode .................................................................... 36
Thermidistat Mode ............................................................ 39
Continuous Blower Mode ................................................. 39
Heat Pump ......................................................................... 40
Start-Up Procedures ................................................................ 40
Purge G_L_ Lines ................................................................ 40
Component Self-Test ......................................................... 40
Prime Condensate Trap With Water ................................. 40
Operate Furnace ................................................................. 41
Furnace Restart .................................................................. 4 I
Adjustments ............................................................................. 4 I
Set Gas Input Rate ............................................................ 41
Set Temperature Rise ........................................................ 45
Adjust Blower Off Delay (Heat Mode) ............................ 46
Set Thermostat Heat Anticipator ...................................... 46
Check Safety Controls ............................................................ 47
Checklist .................................................................................. 47
RATING
CERTIFIED
REGISTERED QUALITY SYSTEM
SAFETY CONSIDERATIONS
Application of this furnace should be indoors with special
attention given to vent sizing and material, gas input rate, air
temperature rise, unit leveling, and unit sizing. Improper
installation or misapplication of furnace can require excessive
servicing or cause premature component failure.
Improper installation, adjustment, alteration, service, mainte-
nance, or use can cause carbon monoxide poisoning, explo-
sion. fire. electrical shock, or other conditions which may
cause personal injury or property damage. Consult a qualified
installer, service agency, local gas supplier, or your distribu
tot or branch for information or :Lssistance. The qualified
installer or agency must use only factory-authorized and
listed kits or accessories when modifying this product. Failure
to follow this warning could result in electrical shock, fire.
personal injury, or death.
Installing and servicing heating equipment can be hazardous due to
gas and electrical components. Only trained and qualified
personnel should install, repair, or service heating equipment.
Untrained personnel can perform basic maintenance functions
such as cleaning and replacing air filters. All other operations must
be performed by trained service personnel. When working on
2
heating equipment, observe precautions in literature, on tags, and
on labels atlached to or shipped with unit and other safety
precautions that may apply.
These instructions cover the minimum requirements and conform
to existing national standards and safety codes. In some instances,
these instructions exceed certain local codes and ordinances,
especially those that may not have kept up with changing residen
tial constt_ction practices. We require these instructions xs a
minimum for a safe installation.
We,u- safety glasses and work glo_es.
--9
Have a fire extinguisher available during start-up and adjustment
procedures and service calls.
Recognize safety information, This is the safety-alert symbol z_,
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
Understand these signal words: DANGER, WARNING, CAU-
TION, and NOTE. These words are used with the safety-alert
symbol. DANGER identifies the moat serious hazards which will
result in severe personal injuD" or death. WARNING sigltifies
hazards which could result in personal injury or death. CAUTION
is used to identify unsafe practices which would result in minor
personal injury or product and property" damage. NOTE is used to
highlight suggestions which will result in enhanced installation,
reliability, or operation.
AIRFLOW
-CY
AIRFLOW
AIRFLOW
A93041
Fig. 1--Multipoise Orientations
INTRODUCTION
The model 58MTA, 2-Stage, 4-way multipoise, Gas-Fired, Cat
egory IV, direct vent condensing furnace is available in model
sizes ranging in high-stage gas input rates of 60,000 to 120.000
Btuh. This furnace is C.S.A. design-certified for natural and
propane gases (see furnace rating plate) and for installation in
alcoves, attics, basements, closets, utility rooms, crawlspaces, and
garages. This furnace is factory-shipped for use with natural gas. A
C.S.A. listed gas conversion kit is required to convert furnace for
use with propane gas.
This furnace shall not be installed directly on ca_eting, tile, or
any other combustible material other than wood flooring. FOC

downflowinstallations,afactoryaccessoryfloorbasemustbe
usedwheninstalledoncombustiblematerialsandwoodflooring.
Specialbaseisnotrequiredwhenthisfurnaceisthstalledonthe
mmmthcturer'scoilassemblyorwhenthemanufacturer'scoilbox
isused.Thedesignofthe5gMTAfurnaceisnotC.S.A,(A.G.A.
andC.G.A.)certifiedforinstallationinmobilehomes,recreational
vehicles,oroutdoors.This furnace is suitable for installation in a
structure built on site or a manufactured budding completed at
final site.
1. Combustion products must be discharged outdoors, Connect
this furnace to an approved vent system only, ,'tqspecified in
the "Venting" section of these instructions
2. Never test for gas leaks with an open flame. Use a commer-
cially available soap solution made specifically for the detec-
tion of leaks to check all connections, as specified in the "Gas
Piping" and "Stari-Up, Adjustment, and Safety Cbeck" sec-
tion.
3. Always install furnace to operate within the furnace's intended
temperature-tise range with a duct system which has an
external static pressure within the allowable range, as speci-
fied in the "Adjustments" section. See furnace rating plate.
4. When a furnace is installed so that supply ducts carry air
circulated by the furnace to areas outside the space containing
the furnace, the return air shall also be handled by duct(s)
sealed to the furnace casing and terminating outside the space
containing the furnace.
5. Agas-fired furnace for installation in a residential garage must
be installed as specified in the warning box in the "'Location"
section.
6. The furnace is not to be used for temporary heating of
buildings or structures under construction.
This furnace is designed lk,r continuous return-air minimum
temperature of 60 °F db or intermittent operation down to 55°F db.
Return-air temperature must not exceed 85°F db, See Fig. 4.
This furnace is shipped with the drain and pressure tubes con-
nected for UPFLOW applications. Minor modifications are re-
quired when used in DOWNFLOW, HORIZONTAL RIGHT,
or HORIZONTAL LEFT Isupply-air discharge direction) appli-
cations as shown in Fig. 1. See details in Applications section.
This furnace must be installed with a direct-vent (combustion air
and flue) system and a factory accessory termination kit. In a
direct-vent system, all air for combustion is taken directly from the
outdoor atmosphere and all flue gases are discharged to the
outdoor atmosphere. See furnace and factor,,' accessory vent-air
intake termination kit instructions for proper installation.
This furnace is shipped with the following materials to a,_sist in
proper furnace installation. These materials are shipped in the main
blower compartment.
Installer Packet includes:
Installation, Startup, and Operating Instructions
Service and Maintenance Instructions
User's Information Manual
Warranty Certificate
Loose Parts Bag includes: Quantit
Pressure tube extension 1
Collector Box or condensate trap extension tube t
Inducer housing drain tube 1
l/2qn CPVC street elbow 2
Drain tube coupling 1
Drain tube coupling grommet 1
Vent and combustion-air intake pipe support 2
Condensate trap hole filler plug 3
Vent and combustion-air intake hole filler plug 2
Cornbustioo-air intake pipe podorated disk assembly 1
Vent Pipe Extension 1"
• ONLY supplied with some furnaces.
For accesso_, installation detail, refer to the accessory, installation
instruction.
NOT[:: Remove all shipping materials before operating furnace.
CODES AND STANDARDS
Follow all national and local codes and standards in addition to
these instructions. The installation must comply with regulations
of the serving g_s supplier, local building, heating, plumbing, and
other codes. In absence of local codes, the installation must
comply with the national codes listed below and ,all authorities
having jurisdiction,
In the United States and Canada, follow all codes and standards for
the following:
Step 1--Safety
US: National Fuel Gas Code (NFGC) NFPA 54-1999/ANSI
Z223.1-1999 and the Installation Standards, Warm Air Heating
and Air Conditioning Systems ANSI/NFPA 90B
• CANADA: CSA B149.1-00 National Standard of Canada,
Natural Gas and Propane Installation Code (NSCNGP1C)
Step 2--General Installation
US: current edition of the NFGC and the NFPA 90B. For
copies, contact the National Fire Protection Association Inc.,
Battery, march Park, Quincy, MA 02269: or for only the NFGC
contact the American Gag Association, 400 N. Capitol., N.W.,
Washington DC 20001
• CANADA: NSCNGPIC. For a copy. contact Standard Sales,
CSA International, 178 Rexdale Boulevard. Etobicoke (Tor-
ontoh Ontario, M9W IR3, Canada.
Step 3---Combustion and Ventilation Air
•US: Section 5.3 of the NFGC. Air for Combustion and
Ventilation
• CANADA: part 7 of the NSCNGPIC. Venting Systems and Air
Supply for Appliances
Step 4--Duct Systems
US and CANADA: Air Conditioning Contractors Association
IACCA! Manual D, Sheet Metal and Air Conditioning Con-
tractors National Association (SMACNA), or American Soci
ety of Heating, Refrigeration, and Air Conditioning Engineers
(ASHRAEI 2001 Fundamentals Handbook Chapter 34.
Step 5---Acoustical Lining and Fibrous Glass Duct
US and CANADA: current edition of SMACNA, NFPA 90B as
tested by UL Standard 181 for Class 1 Rigid Air Ducts
Step 6--Gas Piping and Gas Pipe Pressure Testing
• US: NFGC; chapters 2, 3.4, and 9 and national plumbing codes
• CANADA: NSCNGPIC Parts 3.4, 5, A. B, E, G, and H.

2-IN. COMBUSTION-
2-IN. VENT SONN
_-IN. DIA THERMOSTAT
ENTRY
!7 ............. *q_
T
14 _ SIDE INLET
TYP
T
I"-D- 23 'a'TYP
SIDE INLET
_'_ 26 _,w TYP
f ONDENSATE DRAIN
TRAP LOCATION
(DOWNFLOW &
HORIZONTAL LEFT)
F hqN DIA
POWER CONN
ACCESSORY
POWER ENTRY
i"-_'-'- CO ND EN SAT E l
DRAIN TRAP
LOCATION
(ALTERNATE 4
UPFLOW)
TYP
CONDENSATE
DRAIN LOCATION
(UPFLOW)
AIRFLOW
TYR
_NLET
tI,i_, 41= _ E ...._.._p
TYP
L
CONDENSATE DRAIN
TRAP LOCATION _
(DOWNFLOW &
Hon{ZONTAL RIGHT) _
OR ALTERNATE
!_-IN, DIA GAS CONN
1
_28_ _1
_26 t_t_ "r--
26 _/_r
22 S'I_¸¸ I_
19_ "_-- I_ ¸
--+ _2-1N CONMNBUSTION- -_-
AIR CO s_la,,
_'-"_ _"zIN DIA
THERMOSTAT ENTRY
,f2-1N VENT CONN
I S_DE INLET
i
397_
_E**+_............ A+
J_I 24 '1' _ _ '1' rr
DIMPLE LOCATORS BOTTOM INLET
FOR HORIZONTAL
HANGING
NOTES: 1. Minimum return-air openings at furnace, based on metal duct. If flex duct is used,
see flex duct manufacturer's recommendations for equivalent diameters.
2. Minimum return-air opening at furnace:
a. For 800 CFM-16-in. round or 14'/_x 12-in. rectangle.
b. For 1200 CFM-20-in, round or 14'/= x 19'/_-in. rectangle.
c. For 1600 CFM-22-in, round or 14% x 23%-in. rectangle,
d. For airflow requirements above 1800 CFM, see Air Delivery table in Product Data
literature for specific use of single side inlets. The use of both side inlets, a
combination of 1 side and the botlom, or the bottom only will ensure adequate
return air openings for airflow requirements above 1800 CFM at 0.5" W.C. ESP.
UNIT SIZE D E
060-12 15-7/8 16
080-12 15-7/8 16
080-16 15-7/0 16
100-16 19-3/8 19-1/2
100-20 19-3/8 19-1/2
120-20 22-7/8 23
DIMENSIONS (IN,)
A
17-1/2
17-1/2
17-1/2
21
21
24-1/2
Fig. 2--Dimensional Drawing
A02149

INSTALLATION
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(_O0r//n), nirirnum 3/4 i_c_ (19 ram)It,_ (inditing roo_g _).
Cette foun_se _ _r Dul_ e_t _F_oee pour_l_a_ avec _az nab_el elalludes _ _e 0 3,050m
((3-10,000p_).exc_pt_ c_ f_ d_ 140t_Jle so_tp_J" a_ oomp_ _02.13r_n(0 -7.000 p)
U_liSe:_ne tn_Jssede cor_er_on _un_e pa_le P_, 9our pa_:_r au g_z 10ropal_OUpourcertal_ _ _ _ _d.
Cede fourna_ea a_ p_s$ e_tpou_ins_la_ &I_nt_neu_d,3nsunt_rnent cor_ _Zl_. _ _ _ _ _ _ _ i_ _ _ n_ _
(m_son m0t_le)_i_e_cnt p_"la 13_ 9gnal_t_ et s_I_utd_ une trousses_c_ _ _ _
Cette _n_,se peut Otre _lee surunplan:t_ _e d_s uqer_ =._ ou unI_ac_d en obsen'ant les d_ga_ _p_ _ _ _.
Cotapp_e_l rV_c_e un s'yst_ d _wacu_on speo_. La _d_st_la_on etI_ li_e OesI_CeS _ _ _ _ _ d_e _ _
sd_liseravecbvJvaute_e_snon_mc_tures4OPVC, PVC-Dv_CPVC, ou _et _enepeut pas_e'even_l_econj_r_nent a_ecd'au0_esappa_etsb_z. Em_=_=urdela
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FO_up_oN and do_ applications, fu_ must be instaJ_=dleve_ or i_ched ',_thn 1_
of level FOr a hor_ 8Dplica_on, the flJ_ nlu_ be pltch_ rclr_rnum 1/4"to
ma_mum of 112"forv_ for 17:operdrainage. See Ir_lafa_n Manual for IMI_RTANT urlt
suppo:tdstals_n_al ap_on_
Pour des ;_oplic_honsde flL_ ascendant _ d_ce_a_t, la f_um_se d_t _tre ir_tall_ _
nive_u o_ in:tir_e a I_ plus de 1/2" du nlv_ Pour une _of_iG_tJ(_ honz(_ltate, ta
fcorna_ dot_treinc_r'eeervrer_ran_m1/4"etrn_ornum1/'Z'cIJrw_aJ0_r teciranage
&Encasdin_tall_nen "on_onzo_de,oo_ulterlesnE_rr_nts
la_3_ANTS surle _cons e_rna_ dinst_la_on.
MINIMUM INCHES CLEARANCE TO COMBUSTIBLE CONSTRUCTION
ALL pO_I'I1ONS:
_t _,lnimumflontclearancef_-serv,,ce30inches(762mm).
1_)Nzefurnacesrequre1inchbackdeetancetocontJustiUerr_e_ais
As_t:_y,Part NO.CD5c_CKS,_ C_ICasing,PadNo,KCAKC.
Linecc_tact _pen'tis_iNe onty I_ lines fc_n'_d by intefs_<;ns of top and t_.o s_:_esof furnac_
§ _earancesho_nisf_r_ir_et and_r o_e_end_
DEGAGEMENTMINIMUMENPOUCESAVECELEMENTSDECONSTRUCTIONCOMBUSTIBLES
POUR TOIJS LES POSITIONS:
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LA9o_moNCQURA_TDE_CENOANT:
F_rli_taflatio_s_le combu_il_es4_ulementonutiliselabase "1 e,l:_ce
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noKCAKC
POURLAPOSfllONHORIZONTALE:
Le cc_tact n'e_t _ent re les lignesfomt_ par les intemec1_onsdu desks et des d_es de la
<3_s_ _ I__i_e, _ d_ _iw_, desrnor_ <_delaCf_te duI_ment.
La _stance indquee co_ceme I'ext_wt e du d'ardvee d'air etr e_h_Tite du tuyau de sodie d'_r.
Pourlosfc_na_s de120el140lalle,1po(l_) degagerne_desmatena_o0rd0us_t_estrec@s
_, 324999-201 REV.D {LITTOP)
L_VEL (0") ,, MIN 114"
TO TO
1/2" MA _ ! i ,q
_RONT I r --
UPFLOWOR _"_ FFRONT _[
11 _ HORIZONTAL
DOWNFLOW L_
_lls lumace is aporoved for UPR_OW, DOVe, FLOWaed
C_te foun_se e_ al_oev_e pc_ 1ins_la_n HOFI;_ONTALE
ena circui_f!_ d air V_ LE HAUT etVERS LEBAS.
JA02148
--) Fig. 3_Clearances to Combustibles
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
PROCEDURE
"_ _ MAX 851=
>_
FRONT
RETURN
AIR MIN 55°F
A93042
Fig. 4_Return-Air Temperature
Step 7--Electrical Connections
•US: National Electrical Code (NEC) ANSI/NFPA 70-2002
•CANADA: Canadian Electrical Code CSA C22.1
Use this procedure for ,all installed ,and aninstalled furnaces. An
ESD service kit _available from commercial sources) may be used
to prevent ESD damage.
Electrostatic discharge can affect electronic components.
Follow the Electronic Discharge Precautions Procedure listed
below during furnace inLstallation and servicing to protect the
furnace electronic control. Precautions will prevent electro-
static discharges from personnel and hand tools which are
held during the procedure. These precautions will help to
avoid exposing the control to electrostatic discharge by
putting the furnace, the control and the person at the same
electrostatic potential.
I. Disconnect all power to the furnace. Multiple disconnects may
be required, DO NOT TOUCH THE CONTROL OR ANY
WIRE CONNECTED TO THE CONTROL PRIOR TO DIS-
CHARGING YOUR BODY'S ELECTROSTATIC CHARGE
TO GROUND.
2. Firmly touch the clean, unpainted, metal surface of the furnace
chassis which is close to the control. Tools held in hand during
grounding will be discharged.