HTP Elite XL ELX-1000 - Part 7 - Wiring - 400 - 1500 Models

lp-666 Rev. 003 Rel. 001 Date 2.25.20
30
PIPE HANGER
ASSEMBLIES
FOR SUPPORT
CONDENSATE
NEUTRALIZER
FLOOR DRAIN
HORIZONTAL LINES
MUST BE INSTALLED WITH
A PITCH OF 1/4" PER FOOT
CONDENSATE NEUTRALIZER
WITHOUT PUMP
LP-666-N
11/01/18
PIPE HANGER
ASSEMBLIES
FOR SUPPORT
CONDENSATE
NEUTRALIZER
CONDENSATE
PUMP
HORIZONTAL LINES MUST BE
INSTALLED WITH A PITCH OF
1/4" PER FOOT
CONDENSATE NEUTRALIZER
WITH PUMP
SWEAT PVC TEE OPEN TO
ATMOSPHERE (TO PREVENT VACUUM)
SWEAT PVC TEE OPEN TO
ATMOSPHERE
(TO PREVENT VACUUM)
Figure 23 - Condensate Piping
NOTES:
1. Condensate line must be pitched at least ¼” per foot to properly
drain. If this cannot be done, or a very long length of condensate
hose is used, increase the condensate line and place a tee in the line
before the condensate neutralizer to properly reduce vacuum lock
in the drain line.
2. PVC or CPVC pipe should be the only material used for condensate
line. Steel, brass, copper, and other metals will be subject to corrosion
or deterioration.
3. A frozen condensate line could result in a blocked vent condition.
It is very important to protect the condensate line from freezing
temperatures or any type of blockage. In installations that may
encounter sustained freezing conditions, the use of heat tape is
recommended to avoid freezing of the condensate line. It is also
recommended to bush up the condensate line size and terminate
condensate discharge as close to the unit as possible. Longer
condensate runs are more prone to freezing. Damages due to frozen
or blocked condensate lines ARE NOT covered by warranty.
4. Support of the condensate line may be necessary to avoid
blockage of the condensate ow.
5. To allow proper drainage on longer horizontal condensate runs,
tubing size may need to increase and a second line vent may be
required.
NOTE: To clean out condensate trap, see Maintenance section.
The condensate line must remain unobstructed. If allowed to
freeze in the line or obstructed in any other manner, condensate
can exit from the boiler tee, resulting in potential water damage
to property. When installing a condensate pump, select one
approved for use with condensing boilers and furnaces. The
condensate pump should have an overow switch to prevent
property damage from spillage. Condensate from the boiler will
be slightly acidic (pH from 3.2 to 4.5). Install a neutralizing lter if
required by local codes.
CAUTION
Is is very important that condensate piping be no smaller than
3/4”. Use a tee at the condensate connection with a branch
vertically up and open to the atmosphere to prevent a vacuum
that could obstruct the ow of condensate from the boiler. To
prevent sagging and maintain pitch, condensate piping should be
supported with pipe supports.
When installing a condensate pump, select one approved for use
with condensing boilers and furnaces. The pump should have an
overow switch to prevent property damage from condensate
spillage.
Part 7 - Wiring - 400 - 1500 Models
WARNING
!
To avoid electrical shock, turn o all power to the boiler prior to
opening an electrical box within the unit. Ensure the power remains
o while any wiring connections are being made. Failure to follow
these instructions could result in component or product failure,
serious injury, or death. Such product failure IS NOT covered by
warranty.
Jumping out control circuits or components WILL VOID product
warranty and can result in property damage, personal injury, or
death.
CAUTION
!
Label all wires prior to disconnecting them when servicing the
boiler. Wiring errors can cause improper and dangerous operation.
Failure to follow these instructions may result in property damage
or personal injury.
It is of extreme importance that this unit be properly grounded. It
is very important that the building system ground is inspected by
a qualied electrician prior to making this connection. Electrical
power must only be turned on when the boiler is completely lled
with cold water. Failure to follow these instructions could result in
component or product failure, serious injury, or death.
Electrical Shock Hazard - Turn o electrical power supply at service
entrance panel before making any electrical connections. Failure to
follow to do so could result in serious injury, or death.
Wiring must be NEC Class 1. If original wiring supplied with the boiler
must be replaced, use only TEW 105
o
C wire or equivalent. Boiler
must be electrically grounded as required by the National Electrical
Code, ANSI/NFPA 70 - Latest Edition.
CAUTION
A. Installation Must Comply With
1. National Electrical Code and any other national, state, provincial, or
local codes or regulations.
2. In Canada, CSA C22.1, Canadian Electrical Code Part 1, and any local
codes.
B. Field Wiring
All connections made to the boiler in the eld are done inside the
electrical junction box located on the right side of the unit when
viewed from the front. Multiple knockout locations are available to
route eld wires into and out of the electrical junction box.
The control used in the boiler is capable of directly controlling 2
pumps in standard mode and 3 pumps when congured as a cascade
master boiler. An external contactor relay or motor starter is required.
The Field Connection Board has separate, clearly marked terminal