Carrier 58DH - Manual (Page 4)

T
Horizontal Attic Installation — The Model 58DH
furnace can be installed horizontally on either the
left-hand or right-hand side. A typical attic installa­
tion is shown in Fig. 8.
NOfF.; For attic installations, use Type li or
I \|v- 1 \i in in.it^ii.il
CONSTRUCT WORKING PLATFORM
1. Place working platform in location where all
required furnace clearances are obtainable. See
Table 1.
2. Use materials in platform that can support in­
staller and service persons.
3. Secure platform to building joists.
INSTALL FURNACE
1. Position furnace in desired location.
2. Connect gas supply pipe. See Fig. 8 for typical
piping entry. It is important to install a sediment
trap in the gas pipe riser.
3. Connect supply and return air ducts.
a. Install accessory duct flange kit as shown in
Fig. 9.
b. Connect duct to furnace, using appropriate
fasteners for type of supply air duct being used.
c. Install accessory filter retainer kit before
connecting return air duct to furnace. See
Fig. 10 and Table 5. See note below.
d. Using appropriate fasteners for type of duct
being used, connect return air duct to furnace.
NOTE: For ease of servicing, a return air filter can
be installed in a common return air grille. Air
velocity rating must not exceed 300 fpm for dispos­
able filters. Air velocity through reusable-type filters
shall not exceed manufacturer’s recommendation.
4. Install 24 X 24 in. sheet metal shield on platform
in front of louvered control panel. See Fig. 8.
5. Proceed to Electrical Connections for wiring
information.
Fig. 10 — Horizontal Filter Arrangement
(See Table 5.)