LAARS Mighty Therm HH-PH (Sizes 175-400) - Installation, Operation and Maintenance Instructions - Manual (Page 3)

Mighty Therm HH-PH Hydronic Boilers Page 3
A
8-1/2 in.
(216mm)
INLET OUTLET
TOP VIEW
C C
OPTIONAL
VENT CAP FOR
OUTDOOR USE
DRAFTHOOD
DRAFTHOOD MUST
BE INSTALLED IN
THE FIELD
HEADER
LOCATION
OUTLET
40-9/16 in. (1030mm)
INLET
5-1/2 in.
(140mm)
26-1/2 in.
(673mm)
SIDE VIEW
V
30-3/16 in. (767mm)
B
include the boiler serial number and model (this
information can be found on the rating plate),
installation date, and name of the installer. Shipping
costs are not included in the warranty coverage.
Some accessory items are shipped in separate
packages. Inspect everything for damage immediately
upon delivery, and advise the transporter of any
shortages or damage. Any such claims should be filed
with the transporter. The transporter will not accept a
claim from the shipper, Laars.
The warranty does not cover damage caused by
improper installation, operation, or field modification.
1C. Technical Assistance
Consult Laars or your local company
representative with any questions or problems
involving the specification, installation and operation
of Laars equipment. An experienced technical support
staff is ready to assist in assuring the proper
performance and application of Laars products.
SECTION 1.
General Information
1A. Introduction
This manual provides installation and operation
instructions for the Model HH and PH Hydronic
Boilers, Sizes 175 through 400. Review all application
and installation procedures completely before
proceeding with the installation. Experience has
shown that most operating problems are caused by
improper installation.
The HH-PH boilers are offered in a basic
configuration (see Figure 1). On PH boilers the pump
is factory installed. On HH boilers the pump is field
installed.
1B. Warranty
The HH-PH boilers are sold with a limited
factory warranty.
Make all warranty claims to an authorized Laars
representative or directly to the factory. Claims must
Figure 1. General Configuration.
Gas Connection C* C
Size Water C (Indoor (Indoor V
Connect. U.S. Only w/ Vent w/o Vent Vent
Nat. Propane Size A B (Outdoor) Damper) Damper) Dia.
Size in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm
175 ¾ 19 ½ 13 1½ 38 18 457 26½ 673 14 1 /
16
357 28½ 724 23½ 597 6 152
250 ¾ 19 ½ 13 1½ 38 22½ 572 31 787 18 1 /
16
473 30½ 775 24¾ 629 7 178
325 ¾ 19 ½ 13 1½ 38 26¾ 679 35¾ 908 19 3 /
16
488 — — 25 7 /
8
657 8 203
400 ¾ 19 ½ 13 1½ 38 31¾ 806 40¼ 1022 22 5 /
8
575 — — 26 7 /
8
683 9 229
*Vent damper only required on indoor installations, sizes 175 and 250.
Note: Dimensions may vary.