Troubleshooting Guide

ManualsBrandsMYSON ManualsHeating, Ventilation, and Air ConditioningT6 Series 20 in. H Contemporary Hot Water Panel Radiator

WHISPA III

5000, 7000 & 9000

RADIATORS

HYDRONIC TOWEL WARMERS

12.0 Maintenance

Troubleshooting

Before undertaking any maintenance activity isolate the

electrical supply.

Maintenance should be restricted to occasional removal of dust

and lint around the front grille.

This unit should be serviced periodically by a competent person.

This should involve internal cleaning of the heat exchanger using

a soft brush or vacuum cleaner, taking care not to damage fan or

heat exchanger.

Once installed a radiator becomes an integral part of a

complete heating system that includes boiler, pump, other

emitters such as fin-tube and fan convectors, and a number of

heating

controls,

dependent

system complexity. An apparent

problem with this unit may be the result of system controls being

incorrectly set and can be solved easily without calling out your

installer. Before calling your installer, please carry out the

checks listed below.

For optimum performance, this unit must be correctly sized to

match the heat loss requirements of the space it is required to

heat, and the heating sy

stem must be correctly designed to

provide adequate flow of hot water to the unit.

If the unit is

not correctly sized and/or

the system piping is not correctly

designed, problems may arise as detailed below.

Radiator does

not get hot

Possible Causes

Room thermostat not calling for heat

irculator pump not running

Radiator valves closed

ir blocking or impeding water flow

Problem Remedy

Turn up room thermostat

Check circulator wiring

Check that valves are open

eed (purge) air from radiator*

Part NumberDescription Quantity

Leaking from fittings

Possible Causes

Boiler water temperature set too low

Problem

Poor heating

performance

Unit incorrectly sized for heat loss of room

If the radiator still does not heat after checking the above, call your installer.

Spares List

Motor / Fan Assembly WHISPA III

5000 7100088 1

Motor / Fan Assembly WHISPA III

7000 7100089 1

Motor / Fan Assembly WHISPA III

9000 7100090 1

Switch, 3 way 1300025 1

Switch, 2 way 1300024 1

Low Limit Thermostat 1260007 1

Wiring Harness 3001047 1

15mm Valve & Flexible Hose 1252007 2

Brown Grille, WHISPA III

5000 5000054 1

Brown Grille, WHISPA III

7000 5000058 1

Brown Grille, WHISPA III

9000 5000129 1

White Grille, WHISPA III

5000 5000053 1

White Grille, WHISPA III

7000 5000057 1

White Grille, WHISPA III

9000 5000128 1

Black Grille, WHISPA III

5000 5000061 1

Black Grille, WHISPA III

7000 5000062 1

Black Grille, WHISPA III

9000 5000130 1

11.0

12.0

Poor heating

performance

Low water temperature to unit

Turn up boiler thermostat

Poor water flow

Purge air from heating system

21475 Whispa Manual - US:Layout 1 8/5/09 09:34 Page 11

Myson Inc./Rettig USA 45 Krupp Drive, P.O. Box 1460, Williston, VT 05495 www.mysoncomfort.com

A hydronic towel warmer is a radiator with a design format for a

special use. As such it is subject to the same set

of issues that

would arise with any hydronic radiator.

Increase circulator flow rate

Faulty system piping

Correct system piping

(In most cases this will require a

professional heating specialist)

Common Installation Faults

Circulating pump on low setting or incorrectly sized

System not properly balanced starving radiators of hot water

Faulty system piping design and/or sizing

Insufficient/improper thread sealing

* The most common reason a radiator does not heat is because it is filled with air which prevents hot water from entering and

flowing through the radiator. To vent/purge the air from your radiator follow the steps outlined below. Proceed with caution as

the water in your radiator can be hot enough to cause scalding. If you are unsure of your ability to safely complete

the task please call a heating professional for assistance.

1. Fully open the valve on the supply side of the radiator and close the valve on the return side. (Vent one radiator at a time.)

2. Start your system pump by turning up your thermostat. ( This will also start your boiler in most cases.)

3. Open the air vent slowly using a small screwdriver or vent key. (DO NOT REMOVE THE SCREW.) Have a small bucket or

towel handy catch any water that escapes.

4. Purge until a steady stream of water with no air or hissing sound comes from the vent. The radiator should begin to get hot.

Be patient as this take some time.

5. Close the air vent and open the return side valve.

6. Repeat as required.

R 2016