Accessories; Removal Of Existing Furnaces From Common Vent Systems; Combustion-Air And Vent Piping; Direct Venting - Carrier 58MVP Installation, Start-Up, And Operating Instructions Manual

-->
NOTE: For additional thermostat connection diagrams, reference
Fig 54o61
AC( ESSORIES
1. Electronic Air Cleaner (EAC)
The furnace control EAC terminals are energized with 115v
(1.0=amp maximum) during blower operation.
Connect an accessory Electronic Air Cleaner (if used) using
1/4-in. female quick connect terminals to the two male 1/4=in.
quick-connect terminals on the control board marked EAC-1
and EAC=2. The terminals are rated fbr 115VAC, 1.0 amps
maximum and are energized during blower motor operation.
(See Fig. 32.)
2. Humidifier (HUM)
Connect an accessol T 24 VAC, 0.5 amp maximum humidifier
(if used) to the 1/4-in. male quickoconnect HUM terminal and
Co,,>24V screw tem_inal on the control board thet_nostat strip.
The HUM terminal is energized when blower is energized in
heating. (See Fig. 32.)
[NIT DAMAGE HAZARD
Failure to follow this caution may result in unit component
damage.
DO NOT connect fhrnace control HUM terminal to HUM
(humidifier) terminal on Tlaermidistat
TM,
Zone (ontIoller or
similar device. See Them_idistag xi, Zone Controller, ffiermo°
stat, or controller manui:acmrer's instructions for proper
connection.
Step 9--Direct Venting
The 58MVP furnaces require a dedicated (one 58MVP furnace
only) direct=vent system. In a direct-vent system, all air for
combustion is taken directly fi'om outdoor atmosphere, arid all flue
gases are discharged to outdoor atmosphere.
REMOVAL OF EXISTING FURNACES FR()M
(OMMON VENT SYSTEMS
When an existing Category I furnace is removed or replaced, the
original venting system may no longer be sized to properly vent
the remaining attached appliances. An improperly sized CategoQ"
I venting system could cause the formation of condensate in d_e
furnace and vent, leakage of condensate and combustion products,
and spillage of comhustion products into the living space, etc.
CARBON MONOXIDE POISONING HAZARD
Failure to fbllow the steps outlined below for each appliance
connected to the venting system being placed into operation
could result in carbon monoxide poisoning or death.
The fPllowing steps shall be followed fbr each appliance
connected to the venting system being placed into operation,
while all other appliances connected to the venting system are
not in
operation:
1. Seal any unused openings in venting system.
2. Inspect d_e venting system for proper size and horizontal
pitch, as required in the National Fuel Gas (;ode, ANSI
Z223AiNFPA 54 or dae CSA B149.1. Natural Gas and
Propane Installation Code and these instructions. Deter-
mine that there is no blockage or restriction, leakage,
corrosion and other deficiencies, which could cause an
urisafc condition.
3. As fhr as practical, close all building doors and windows
and all doors between the space in which the appli=
ance(s) connected to the venting system are located and
other spaces of the building.
4. Close fireplace dampers.
5. Turn on clothes dcgers and any appliance not connected
to the venting system. Turn on any exhaust fans, such as
range hoods and bathroom exhausts, so they are opera°
ing at maximum speed. Do not operate a summer
exhaust fhn.
6. Follow the lighting instructions. Place the appliance
being inspected into operation. Adjust the thermostat so
appliance is operating continuously.
7. Test for spillage fiom draft hood equipped appliances at
the &aft hood relief opening after 5 minutes of main
burner operation. Use d_e flame of a match or candle.
8. If improper venting is observed during any of the above
tests, the venting system must be corrected in accordance
with the National Fuel Gas (7ode, ANSI Z223AiNFPA
54 and/or CSA B 149.1, Natural Gas and Propane Instal°
tation Code,
9 After it has been dete*mined that each appliance con=
nected to the venting system properly vents when tested
as outlined above, return doors, windows, exhaust rims,
t_replace dampers and any other gas°fired burning appli°
ante to their previous conditions of use
Vent system or vent connectors may need to be resized. For any
other appliances when resizing vent systems or vent connectors,
system or connector must be sized to approach minimum size as
determined using appropriate vent sizing table %und in the NFGC
or NSCNGPIC
COMBUSTION=AIR AND VENT PIPING
General
Combustion_air and vent pipe, fittings, primers, arid solvents must
con%tin to American National Standards Institute (ANSI) stan-
dards arid American Society %r Testing and Materials (ASTM)
standards. See Table 5 for approved materials for use in the U.S.A.
See Table 7 fbr maximum pipe lengths and Fig. 37, 38, 39, 40, and
41 fk_r exterior piping an'angements.
23