GSW Gas Fired Water Heater User Manual download pdf (Page 11)

– 11 –

VIII) HEATING AND SPACE HEATING

(COMBO HEATING)

This section serves as a guide for the installation and use of

“Combo” heating systems utilizing a domestic water heater which

has been specifically approved for such use. It is written for those

knowledgeable in the required trades and professionals involved

in the design and installation of Combo Heating Systems.

It is the responsibility of the installer/ designer to

follow all applicable codes to ensure the

effectiveness and safety of the installation.

Caution

READ BEFORE PROCEEDING

The following requirements must be met for the installation of

Combo Heating Systems:

1.All components used for the distribution of water in the heating

loop must be suitable for potable water. These include all piping,

fittings, solder and fluxes, pumps for circulation of water, valves,

etc.

2.The water heater must not be connected to a hydronic

heating system that has been used previously.

3.No boiler treatment chemicals of any kind shall be introduced

into the system.

4.The Combo System components must be selected and sized to

meet and maintain the total calculated demands for both domestic

service hot water and space heating requirement. The sizing and

installation must be performed in accordance with good

engineering practice such as ASHRAE Handbooks, HRAI,

Hydronics Institute Manuals, CGA B149, NFPA 54, ANSI Z223.1,

CSA F280, National/Provincial Building Codes, CSA C22.1,

ANSI/NFPA 70, CSA B51 and/or codes having jurisdiction.

5.The air handler (fan coil) and/or the circulating pump in a

baseboard hydronic loop will require a dedicated 120V circuit.

This must be provided and identified for this purpose.

6.All piping between the water heater and the air handler or

hydronic baseboard loop must be adequately insulated to reduce

heat loss.

7.If the local jurisdiction requires a back-flow preventer in the cold

water line, an expansion tank of adequate size must be installed.

8.To reduce the scald hazard potential, a mixing valve must be

installed.

INSTALLATION

The heating mode may be one of the following options:

A- A fan coil/air handler (figure 9).

B- A hydronic baseboard (finned tube) loop/ In floor heating (figure

10).

The following is a list of requirements for the installation of the

heating loop to the water heater.

a)Install shut-off valves and unions so that the water heater can

be isolated from the heating module should servicing of the water

heater become necessary.

b)Install a drain valve at the lowest point of the heating loop so

that water can be drained from the heating module without

affecting the water heater.

c)If the air handler does not have a venting means at the highest

point of the piping arrangement, install an air bleed at the highest

point of the plumbing arrangement.

MAINTENANCE

The installation and maintenance of the water heater must follow

all of the instructions described in sections I to VII of this manual.

Heater failure that is a result of the heating system is not covered

by warranty.

Figure 9

Figure 10

1 2 ... 6 7 8 9 10 11 12 13

Comments to this Manuals

No comments

GSW Gas Fired Water Heater User Manual Page 11

Comments to this Manuals

Related products and manuals for Water heaters & boilers GSW Gas Fired Water Heater