A playground for young burns patients complete with a replica fire engine has been unveiled at The Children's Hospital at Westmead in Sydney's west.

Members of Fire and Rescue New South Wales this morning attended the opening of the new $180,000 playground, constructed on the site of a previously dilapidated courtyard.

Patients past and present were first to play in the Bandaged Bear Fire Station No. 2, which includes a replica fire engine.

Brooke Burns, whose daughter Sophie is a patient, said the playground was "amazing" and would dramatically improve the time children spent in the burns unit.

"The amount of happiness it's going to bring to the children ... is the most important thing," she said.

"I think for the future children in the ward it's going to be an absolute bonus to have this playground and have them be able to come out here and enjoy the sunshine."

The Head of the Burns Unit, Dr John Harvey, said the playground would aid patients in their rehabilitation.

"The playground is a great thing that will excite the children and stimulate them to exercise," he said.

"With major burns, particularly those affecting the joints, there are physical issues that have to be addressed relating to mobility, growth and fine motor skills.

"We deal with these in a formal sense through physiotherapy but with children we are constantly looking for things that will interest and distract them, providing the kind of exercise that will assist their rehabilitation.

"The child has to be rehabilitated as fast as possible to pre-burn life, and the playground will help them to do so."

2yo burnt by spilt tea

Toddler Braxton Truscott was burnt in late July when he spilt tea on himself.

His father, Brendan McGrath, said it happened so quickly.

"He simply pulled this cup of green tea and within two minutes I noticed all his chest was burnt," he said.

Two-year-old Braxton Truscott will be able to play on the new equipment while he is having physiotherapy over the next 12 months. ( Supplied )

The two-year-old's mother, Donna Truscott, said it was horrible.

"He started screaming and I knew by the scream obviously something terrible had happened," she said.

"So Dad pulled the shirt off and we noticed the skin peeling so we called an ambulance, came to emergency.

"At the time you don't realise how serious it is but when we came back a few days later and they took the bandage off the full gravity of how bad it was sunk in."

Ms Truscott said her son had skin graft surgery last month, and will need physiotherapy for the next 12 months.

"It's been a painful process but coming here to the hospital we've had support from the doctors, the social workers, the nurses," she said.

"Play is a form of therapy and I think [the playground is] going to be fantastic, unfortunately more kids will have to come through here but for our little boy now he has something positive to play in when he comes in."

The Children's Hospital at Westmead is the referral centre for all major paediatric burns in NSW and treats about 1,500 children every year.

Acting Chief Executive Dr Michael Byrdon thanked developer Mirvac, which donated and built the playground.

More than 40 companies donated labour and materials for its construction.