LAARS HP-M2 Series - Installation, Operation and Maintenance Instructions - Manual (Page 17)

H Series Page 17
SECTION 7.
HP Mounting Piping
The Model HP-M2-Series may be used as either
a Paloma Pak/Hytech boiler replacement or as a new
wall-mount installation. Carefully unpack HP unit.
Read all installation instructions before starting the
installation. Remove the Front removable jacket and
find the plumbing accessories package inside the unit.
7A. Wall Mounting Instructions
Paloma/Hytech Replacement
Hang the HP-M2 as assembled from the
manufacturer onto the existing wall bracket. Do not
remove the brackets which are attached to the new
unit. If the existing wall bracket does not align with
the slotted mounting holes on the rear of the HP-M2,
remove the old bracket from the wall and follow
instructions for new wall mount below.
7B. New Wall Mount Installation
Remove the bolts, nuts and washers that secure
the two mounting brackets to the bottom and rear of
the HP-M2 cabinet. Remove the U-channel spacer
bracket from each wall bracket and discard. (Spacer
brackets are used only with original bracket in Paloma
Pak/Hytech retrofit installations)
Attach the included mounting template to the
selected wall location. Mark and drill holes for
appropriate mounting hardware at the template
specified locations. Remove template from the wall
and securely affix the two wall brackets to the wall
surface with appropriate mounting hardware (provided
by installer).
Lift the HP-M2 onto the wall brackets and re-
assemble the bolts, nuts and washers to affix the unit
onto the wall brackets.
NOTE: DO NOT REINSTALL THE
U-CHANNEL SPACER BRACKETS WHEN
MOUNTING THE WALL BRACKETS DIRECTLY
TO A WALL.
7C. Hydronic Systems Connections
The H SERIES HP-M2 Series is supplied with
the necessary fittings to match the Paloma Pak supply
and return piping. If the original wall bracket is
compatible with the slotted mounting holes on the rear
of the HP-M2, the supply and return pipe unions
attach directly to the existing piping. If the installation
is new or if the old bracket is incompatible or
unusable, the return and supply connections will
require re-piping to match the HP-M2 connections.
7D. Plumbing Accessories Installation
1) Attach boiler drain plumbing accessory to the
labeled “return” on the bottom of the HP-M2.
2) Separate Thermostatic Union Assembly halves
and thread the 1" nipple side to the labeled
“supply” on the bottom of the HP-M2. Attach the
remainder of the union assembly onto the top
half of the union. Be sure to use appropriate
thread sealers to assure leak-tight joints.
3) a. Where the HP-M2 is a direct replacement
for a PalomaPak/Hytech the installation is
completed by connecting union halves
together.
b. If the installation is new, refer to the piping
schematics and instructions on page 10 -12.
7E. Gas Supply Connection
If the installation is a direct retrofit, the gas
supply will require re-piping to connect to the HP-M2
gas inlet. If the gas is supplied from below the unit, be
sure to run supply pipe to a point higher than the vent
center line before connection to the unit gas valve.
On new installations refer to the gas piping
section for gas pipe sizing and related information.
SECTION 8.
HP Venting and Electrical
8A. Venting the HP-M2-Series
The HP-M2 may be vented using any of the
venting options available to the H(W)-M2-Series.
These options include Direct Vent, Outside Air
vented, Alternate horizontal/vertical venting (using
“Special Gas Vent”) or internal lined or “B” Vent type
chimneys.
MODEL HP-M2-60 & HP-M2-100 MUST
NOT BE CHIMNEY CONNECTED OR “B”
VENT CONNECTED.
8A-1. AGA
When used as a retrofit boiler vented into a
chimney or a “B” Vent, be sure to check current vent
and vent connector sizing tables. Only units fired at
130MBTU/hr may be vented with this option. Under
no circumstances shall the HP-M2-60 be chimney
connected or “B” vented using 3" vent or vent
connectors. The unit 3" vent collar must be increased
to a size which will accommodate the chimney system
for the appropriate BTU/hr input of the boiler.
In the event the unit firing rate and masonry
chimney parameters do not fall within the
recommendations in the latest N.F.G.C.* chimney
sizing tables, a flexible chimney liner may be utilized
in the chimney. Sizing capacity for metal chimney
liners may be obtained by 20% de-rating (or 80%) of
the “fan max” capacity from B vent tables. See page 5
for vent table excerpts.
*National Fuel Gas Code ANSI Z223.1 / NFPA 54.
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