Part 3: execution – Roberts Gorden Combat WHA XS Series User Manual

Page 4

Installation Code and Annual Inspections:

All installation and service of ROBERTS GORDON

equipment must be performed by a contractor qualified in the installation and

service of equipment sold and supplied by Roberts-Gordon LLC and conform to all requirements set forth in the ROBERTS GORDON

manuals and all applicable governmental authorities pertaining to the installation, service and operation of the equipment. To help fa-

cilitate optimum performance and safety, Roberts-Gordon LLC recommends that a qualified contractor conduct, at a minimum, annual

inspections of your ROBERTS GORDON

equipment and perform service where necessary, using only replacement parts sold and

supplied by Roberts-Gordon LLC.

Further Information:

Applications, engineering and detailed guidance on systems design, installation and equipment performance is

available through ROBERTS GORDON

representatives. Please contact us for any further information you may require, including the

Installation, Operation and Service Manual.
These products (with the exception of the UHA[X][S]30 - 75) are not for residential use.
This document is intended to assist licensed professionals in the exercise of their professional judgment.

by any means – graphic, electronic, or mechanical, including photocopying, recording, taping, or information storage

and retrieval systems – without written permission of Roberts-Gordon LLC.

Printed in U.S.A.

UHAESNA

1209 Rev A

Roberts-Gordon LLC
1250 William Street
P.O. Box 44
Buffalo, NY 14240-0044 USA
Telephone: +1.716.852.4400
Fax: +1.716.852.0854
Toll Free: 800.828.7450

www.rg-inc.com

PART 3: EXECUTION

3.1 INSTALLATION

A. General: Install gas-fired unit heaters as indicated, in

accordance with manufacturer's installation instructions

and in compliance with applicable codes and approvals.

Allow adequate space for combustion air supply, circulation

(axial) fan air supply, servicing or removal of the unit

without disturbing other equipment. For installation at

altitudes above 2,000' (610 m), inform manufacturer at time

of order for appropriate high altitude adjustment and rating

by the manufacturer.

B. Support: Suspend heater, venting, gas piping and conduit

from building substrate as indicated, or if not indicated, in

a manner to provide durable and safe installation; and in

accordance with manufacturer's installation instructions.

Recommended mounting heights shall be measured from

floor level. Models 30 - 45 shall have a recommended

mounting height of 12' (3.7 m). Models 60 - 75 shall have

a recommended mounting height of 15' (4.6 m). Models

100 - 175 shall have a recommended mounting height of

20' (6.1 m). Models 200 - 250 shall have a recommended

mounting height of 25' (7.6 m). Models 300 - 400 shall have

a recommended mounting height of 30' (9.1 m).

C. Clearances to Combustibles: Do not impede upon

clearances to combustibles outlined and printed on burner

nameplate, and in manufacturer's product data. Measure

clearances distance from surface of cabinet. Models 30-

125 shall have a rated clearances to combustibles of 0"

(0 cm) below unit and not to exceed 1" (2.54 cm) above

the unit. Models 150-400 shall have a rated clearances to

combustibles of 3" (7.62 cm) below unit and 6" (15.24 cm)

above the unit.

D. Venting: Install vent piping as indicated and per national

and local codes. Terminate where indicated with vent

terminal assembled per instructions supplied by the

manufacturer of the vent terminal. Properly support

venting. Penetrations through combustible surfaces

must obey all venting clearances defined by local codes

and heater and venting manufacturers. Vent insulation

recommended depending on vent lengths as indicated by

manufacturer. Condensate drains may be recommended as

indicated by manufacturer.

E. Gas Piping: Install gas piping as indicated and in

accordance with NFPA Article 54 National Fuel Gas Code

(latest edition), local requirements and the Installation,

Operation and Service Manual. Gas pressure supply to each

burner shall be as specified by heater manufacturer. For

units running on natural gas, the required gas supply inlet

pressure must be between 5.0 in wc (12.5 mbar) and 14.0

in wc (34.9 mbar). For units running on LPG, the required

gas supply inlet pressure must be between 12.0 in wc (29.9

mbar) and 14.0 in wc (34.9 mbar).

F. Electrical Wiring: Install electrical wiring per NFPA

Article 70 National Electric Code (latest edition), local

requirements and the information and wiring diagrams in

the Installation, Operation and Service Manual.

G. Thermostat Devices: Where indicated, provide 24 V

thermostat device connected to heater. Mount thermostat

device 5' - 6' (1.5 m -1.8 m) above finish floor or otherwise

as noted on the drawing. Thermostat wiring must follow

local codes. Mount wall instruction tag (provided by

manufacturer) at user level near thermostat device.

H. Start-Up: Start-up, test, and adjust gas-fired heaters in

accordance with manufacturer's start-up instructions,

and Utility Company's requirements. Check and calibrate

controls, adjust burners, if applicable, according to

manufacturer's instructions for maximum efficiency.

3.2 SCHEDULES

A. See plans.