RF Unit Installation
Fig. 10 Attaching a Threaded Rod to a Mounting Bracket
5.7 Condensate Drain
5.7.1 Horizontal (HZ) and CounterFlow (CF) Units
A drain line must be connected to the heat pump and pitched
away from the
unit a minimum of 1/8” per foot to allow the
condensate to flow away from the unit.
This connection must be in conformance with local plumbing
codes. A trap
must be installed in the condensate line to ensure
free condensate flow.
Horizontal and CounterFlow configuration units are not
internally trapped.
A vertical air vent is sometimes required to avoid air pockets. The
depth of the trap depends on the amount of positive or negative
pressure that is on the drain pan while the unit’s fan is operating.
A second trap must NOT be included. (See Fig. 11.)
Fig. 11 Condensate Drain Installation
5.7.2 Vertical (VT) Units
Vertical configuration units are internally trapped from the
factory. A sec
ond trap must NOT be included. (See Fig. 12.)
Fig. 12 Vertical Units are Internally Trapped
Vertically-configured
units are internally
trapped from the
factory.
5.8 Duct System
All RF Series models are provided with a supply air outlet collar
and return air duct flange to facilitate duct connections.
Supply air duct and return air duct flanges are shipped unfolded with
the unit. They need to be folded.
See “Return and Supply Air Duct
Flanges Preparation” on page #12 for details.
Refer to unit Dimensional Drawings for physical dimensions of
the collar and flange. (See page #70.)
A flexible duct connector is recommended for supply and return
air duct connections on metal duct systems. In order to avoid
heat loss or gain and prevent condensate forming during the
cooling operation insulate all metal ducting with a minimum of 1"
duct insulation. Application of the unit to uninsulated duct work
is not recommended as the unit’s performance will be adversely
affected.
The factory filter should be left in place on a free return system.
For new or replacement market installations, please refer to
current ASHRAE procedures for duct sizing to ensure proper
unit's operation and air distribution. If the duct system is too
small, larger duct work should be installed. Check for any leaks in
the existing duct work and repair as needed.
16 |
RF Series Heat Pumps — 8733980022 (2024/12)
To Next Page
Loading...
